marsstealer | 27c43e0863d1f53297dc16f09626d956c6f86cf3285bbd8eb8488eccb564fa66

Analysis

max time kernel
140s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
16/12/2023, 17:16

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General

Target
bffa608e609a6e2f67d01bb5f64ba70a.exe
Size 2.6MB
Sample231216-vs4xtsdfe9
SHA256 27c43e0863d1f53297dc16f09626d956c6f86cf3285bbd8eb8488eccb564fa66
MD5 bffa608e609a6e2f67d01bb5f64ba70a
SHA1 dfc31151b6886f6a0e18c6a564f766591772b78f
SHA512 4936cea91c0d0cfbba73d0a62fb31c3cf4f915611c031f358bb9f86fceeed8318d25b3b2e9785bed7a77d3c4093a48b8d58a01520190fa6fd30a2d27276863b7
SSDEEP 12288:ljT1qos+lTLzwN9RYIA17At7y7qP7d1JHywHS38hy:+UlyYIApAxyGd1JSgS3my
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

marsstealer default stealer

Malware Config

Extracted

Family

marsstealer

Botnet

Default

91.92.250.149/gate.php

Signatures

Mars Stealer
An infostealer written in C++ based on other infostealers.
stealer marsstealer

Loads dropped DLL 2 IoCs

pid	Process
3836	AddinProcess32.exe
3836	AddinProcess32.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1264 set thread context of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3924	3836	WerFault.exe	91

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1264	bffa608e609a6e2f67d01bb5f64ba70a.exe
1264	bffa608e609a6e2f67d01bb5f64ba70a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1264 wrote to memory of 2812	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	90
PID 1264 wrote to memory of 2812	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	90
PID 1264 wrote to memory of 2812	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	90
PID 1264 wrote to memory of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1264 wrote to memory of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1264 wrote to memory of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1264 wrote to memory of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1264 wrote to memory of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1264 wrote to memory of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1264 wrote to memory of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1264 wrote to memory of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1264 wrote to memory of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1264 wrote to memory of 3836	1264	bffa608e609a6e2f67d01bb5f64ba70a.exe	91

C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe
"C:\Users\Admin\AppData\Local\Temp\bffa608e609a6e2f67d01bb5f64ba70a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1264
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe"
  2⤵
  PID:2812
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe"
  2⤵
  - Loads dropped DLL
  PID:3836
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3836 -s 1260
    3⤵
    - Program crash
    PID:3924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3836 -ip 3836
1⤵
PID:3052

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

mozglue.dll

Path C:\ProgramData\mozglue.dll
Size 133KB
SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
MD5 8f73c08a9660691143661bf7332c3c27
SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
SSDEEP 3072:7Gyzk/x2Wp53pUzPoNpj/kVghp1qt/dXDyp4D2JJJvPhrSeTuk:6yQ2Wp53iO/kVghp12/dXDyyD2JJJvPR
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path C:\ProgramData\nss3.dll
Size 1.2MB
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
SSDEEP 24576:Sb5zzlswYNYLVJAwfpeYQ1Dw/fEE8DhSJVIVfRyAkgO6S/V/jbHpls4MSRSMxkoo:4zW5ygDwnEZIYkjgWjblMSRSMqH
MD5 SHA1 SHA512 SSDEEP

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memory/1264-0-0x00000000001B0000-0x0000000000456000-memory.dmp

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memory/1264-1-0x00007FFC393F0000-0x00007FFC39EB1000-memory.dmp

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memory/1264-2-0x0000000000D40000-0x0000000000D50000-memory.dmp

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memory/1264-4-0x00007FFC393F0000-0x00007FFC39EB1000-memory.dmp

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memory/3836-3-0x0000000000400000-0x000000000043D000-memory.dmp

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memory/3836-6-0x0000000000400000-0x000000000043D000-memory.dmp

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memory/3836-7-0x0000000000400000-0x000000000043D000-memory.dmp

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memory/3836-8-0x0000000060900000-0x0000000060992000-memory.dmp

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memory/3836-59-0x0000000000400000-0x000000000043D000-memory.dmp

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