marsstealer | 27c43e0863d1f53297dc16f09626d956c6f86cf3285bbd8eb8488eccb564fa66

Analysis

max time kernel
138s
max time network
145s
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
MD5

bffa608e609a6e2f67d01bb5f64ba70a
SHA1

dfc31151b6886f6a0e18c6a564f766591772b78f
SHA256

27c43e0863d1f53297dc16f09626d956c6f86cf3285bbd8eb8488eccb564fa66
SHA512

4936cea91c0d0cfbba73d0a62fb31c3cf4f915611c031f358bb9f86fceeed8318d25b3b2e9785bed7a77d3c4093a48b8d58a01520190fa6fd30a2d27276863b7
SSDEEP

12288:ljT1qos+lTLzwN9RYIA17At7y7qP7d1JHywHS38hy:+UlyYIApAxyGd1JSgS3my

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
788	AddinProcess32.exe
788	AddinProcess32.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1940 set thread context of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1140	788	WerFault.exe	92

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1940	bffa608e609a6e2f67d01bb5f64ba70a.exe
1940	bffa608e609a6e2f67d01bb5f64ba70a.exe
1940	bffa608e609a6e2f67d01bb5f64ba70a.exe
1940	bffa608e609a6e2f67d01bb5f64ba70a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 2416	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	90
PID 1940 wrote to memory of 2416	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	90
PID 1940 wrote to memory of 2416	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	90
PID 1940 wrote to memory of 4224	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1940 wrote to memory of 4224	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1940 wrote to memory of 4224	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	91
PID 1940 wrote to memory of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92
PID 1940 wrote to memory of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92
PID 1940 wrote to memory of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92
PID 1940 wrote to memory of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92
PID 1940 wrote to memory of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92
PID 1940 wrote to memory of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92
PID 1940 wrote to memory of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92
PID 1940 wrote to memory of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92
PID 1940 wrote to memory of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92
PID 1940 wrote to memory of 788	1940	bffa608e609a6e2f67d01bb5f64ba70a.exe	92

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:1940
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe"
  2⤵
  PID:2416
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddinProcess32.exe"
  2⤵
  PID:4224
- 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:788
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 788 -s 1300
    3⤵
    - Program crash
    PID:1140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 788 -ip 788
1⤵
PID:3108

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\ProgramData\mozglue.dll

Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
C:\ProgramData\nss3.dll

Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
memory/788-3-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/788-6-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/788-7-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/788-8-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/788-59-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1940-0-0x0000000000070000-0x0000000000316000-memory.dmp

Filesize
2.6MB

Download
memory/1940-1-0x00007FF997820000-0x00007FF9982E1000-memory.dmp

Filesize
10.8MB

Download
memory/1940-2-0x000000001AF50000-0x000000001AF60000-memory.dmp

Filesize
64KB

Download
memory/1940-4-0x00007FF997820000-0x00007FF9982E1000-memory.dmp

Filesize
10.8MB

Download