Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 149dbad9d6c03a9a…

MALICIOUS

Office (OLE) / .DOC

546.0 KB Created: 2009-12-11 11:47:44 Authoring application: Advanced Installer 16.2 build 436ecd62 First seen: 2026-05-11
MD5: a609dcb9ae1192bd632dd08a0be6b195 SHA-1: f4e2edd2bbbb8984128cfb94d6b4537a03a6df78 SHA-256: 149dbad9d6c03a9a229e464815ecbf3484a5ea69de3fd92c722b0a33581c08a5
382 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer T1203 Exploitation for Client Execution

The sample is a malicious Office document containing an embedded PE executable, identified by the OLE_EMBEDDED_EXE heuristic. The SE_PASSWORD_ARCHIVE_LURE heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. The presence of CreateProcess and ShellExecute API references, along with references to Windows Script Host, suggests the embedded executable is intended to be run, likely to download and execute further stages.

Heuristics 10

  • Embedded PE executable critical OLE_EMBEDDED_EXE
    MZ/PE header found inside document — possible embedded executable
  • PEB access via FS segment (x86) high SC_PEB_ACCESS
    PEB access via FS segment (x86)
    Disassembly
    x86 disassembly · validity: code (0.984) — 11/11 branch targets land on an instruction boundary (100% coherence)
    0003AA56  64a130000000      mov eax, dword ptr fs:[0x30]
0003AA5C  8b4068            mov eax, dword ptr [eax + 0x68]
0003AA5F  c1e808            shr eax, 8
0003AA62  a801              test al, 1
0003AA64  7510              jne 0x3aa76
0003AA66  ff7508            push dword ptr [ebp + 8]
0003AA69  ff1568b10310      call dword ptr [0x1003b168]
0003AA6F  50                push eax
0003AA70  ff1520b20310      call dword ptr [0x1003b220]
0003AA76  ff7508            push dword ptr [ebp + 8]
0003AA79  e84e000000        call 0x3aacc
0003AA7E  59                pop ecx
0003AA7F  ff7508            push dword ptr [ebp + 8]
0003AA82  ff15f0b10310      call dword ptr [0x1003b1f0]
0003AA88  cc                int3
0003AA89  6a00              push 0
0003AA8B  ff156cb20310      call dword ptr [0x1003b26c]
0003AA91  85c0              test eax, eax
0003AA93  7434              je 0x3aac9
0003AA95  b94d5a0000        mov ecx, 0x5a4d
0003AA9A  663908            cmp word ptr [eax], cx
0003AA9D  752a              jne 0x3aac9
0003AA9F  8b483c            mov ecx, dword ptr [eax + 0x3c]
0003AAA2  03c8              add ecx, eax
0003AAA4  813950450000      cmp dword ptr [ecx], 0x4550
0003AAAA  751d              jne 0x3aac9
0003AAAC  b80b010000        mov eax, 0x10b
0003AAB1  66394118          cmp word ptr [ecx + 0x18], ax
0003AAB5  75                .byte 0x75
  • Reference to CreateProcess API high SC_STR_CREATEPROCESS
    Reference to CreateProcess API
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Reference to LoadLibrary API high SC_STR_LOADLIBRARY
    Reference to LoadLibrary API
  • Reference to GetProcAddress API high SC_STR_GETPROCADDRESS
    Reference to GetProcAddress API
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://t2.symcb.com0 In document text (OLE body)
    • http://tl.symcd.com0&In document text (OLE body)
    • http://s.symcd.com06In document text (OLE body)
    • http://ts-ocsp.ws.symantec.com0In document text (OLE body)
    • http://t1.symcb.com/ThawtePCA.crl0In document text (OLE body)
    • http://tl.symcb.com/tl.crl0In document text (OLE body)
    • https://www.thawte.com/cps0/In document text (OLE body)
    • https://www.thawte.com/repository0WIn document text (OLE body)
    • http://tl.symcb.com/tl.crt0In document text (OLE body)
    • https://www.advancedinstaller.comIn document text (OLE body)
    • https://d.symcb.com/cps0%In document text (OLE body)
    • https://d.symcb.com/rpa0In document text (OLE body)
    • http://s.symcb.com/universal-root.crl0In document text (OLE body)
    • https://d.symcb.com/rpa0@In document text (OLE body)
    • http://ts-crl.ws.symantec.com/sha256-tss-ca.crl0In document text (OLE body)
    • http://ts-aia.ws.symantec.com/sha256-tss-ca.cer0(In document text (OLE body)
🗂 Part of campaign: symcd.com06 24 samples

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_office_00011a00.exe embedded-pe Office MZ+PE at offset 0x11A00 486912 bytes
SHA-256: ffb7b9112f2225584858f5713dc8d621d3abd0e34171d010faf4339b38760dae
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: SC_PEB_ACCESS, SC_STR_SHELLEXEC, SC_STR_LOADLIBRARY Static shellcode analysis recovered API/import strings: shell32.dll, ShellExecuteW, LoadLibraryW, GetProcAddress, kernel32.dll, KERNEL32.DLL Static shellcode analysis recovered command string(s): WScript.Quit()}else {if(!d){d= 0};try{WLUBQD32485PCCK= new ActiveXObject("Scripting.FileSystemObject");KANHNU52840NBXN= WLUBQD32485PCCK.CreateTextFile(DNFNAA44878DYAI Carved artifact contains 18 shell/COM execution token(s).

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