marsstealer | eb58e5135790901dd0cb00adc0918321838af45df9488aad01b6857ccd822e5f

General

Target

24426a615e821fbffa83ea6e5b2632ca.exe
Size

1.7MB
MD5

24426a615e821fbffa83ea6e5b2632ca
SHA1

a67b017fc43a7a58d5b77b8a0f452d3fcd87914e
SHA256

eb58e5135790901dd0cb00adc0918321838af45df9488aad01b6857ccd822e5f
SHA512

eabf749174dc7a7580ff2a4bc23878e12069e06834d506b8db48088deacf8a5f569506d259fb0499e898f4f1c000b294d2dfbcf83cb6e561a86c1bf8c6b2dc7e
SSDEEP

24576:Ez+OdR/U4yrxD/wXzWJfLheE8arMVlcgHwgmFB9P+fPswOwkgB3JI5Ri2dGE7e+W:idRRyWYLnj8cgk+fEGB3i5REue+Q/2O

Score

10^/10

marsstealer default spyware stealer

Malware Config

Extracted

Family

marsstealer

Botnet

Default

C2

185.243.113.15/FJNEjnp9.php

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
1076	InstallUtil.exe
1076	InstallUtil.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1504 set thread context of 1076	1504	24426a615e821fbffa83ea6e5b2632ca.exe	28

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	InstallUtil.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	InstallUtil.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
664	timeout.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1504	24426a615e821fbffa83ea6e5b2632ca.exe
1504	24426a615e821fbffa83ea6e5b2632ca.exe
1504	24426a615e821fbffa83ea6e5b2632ca.exe
1504	24426a615e821fbffa83ea6e5b2632ca.exe
1504	24426a615e821fbffa83ea6e5b2632ca.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 1076	1504	24426a615e821fbffa83ea6e5b2632ca.exe	28
PID 1504 wrote to memory of 1076	1504	24426a615e821fbffa83ea6e5b2632ca.exe	28
PID 1504 wrote to memory of 1076	1504	24426a615e821fbffa83ea6e5b2632ca.exe	28
PID 1504 wrote to memory of 1076	1504	24426a615e821fbffa83ea6e5b2632ca.exe	28
PID 1504 wrote to memory of 1076	1504	24426a615e821fbffa83ea6e5b2632ca.exe	28
PID 1504 wrote to memory of 1076	1504	24426a615e821fbffa83ea6e5b2632ca.exe	28
PID 1504 wrote to memory of 1076	1504	24426a615e821fbffa83ea6e5b2632ca.exe	28
PID 1504 wrote to memory of 1076	1504	24426a615e821fbffa83ea6e5b2632ca.exe	28
PID 1504 wrote to memory of 1076	1504	24426a615e821fbffa83ea6e5b2632ca.exe	28
PID 1076 wrote to memory of 1212	1076	InstallUtil.exe	31
PID 1076 wrote to memory of 1212	1076	InstallUtil.exe	31
PID 1076 wrote to memory of 1212	1076	InstallUtil.exe	31
PID 1076 wrote to memory of 1212	1076	InstallUtil.exe	31
PID 1212 wrote to memory of 664	1212	cmd.exe	33
PID 1212 wrote to memory of 664	1212	cmd.exe	33
PID 1212 wrote to memory of 664	1212	cmd.exe	33
PID 1212 wrote to memory of 664	1212	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\24426a615e821fbffa83ea6e5b2632ca.exe
"C:\Users\Admin\AppData\Local\Temp\24426a615e821fbffa83ea6e5b2632ca.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious use of WriteProcessMemory
  PID:1076
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1212
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 5
      4⤵
      Delays execution with timeout.exe
      PID:664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\ProgramData\mozglue.dll

Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\nss3.dll

Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
memory/1076-69-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1076-66-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1076-91-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1076-67-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1076-61-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1076-63-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1504-65-0x00000000025D0000-0x0000000002748000-memory.dmp

Filesize
1.5MB

Download
memory/1504-58-0x0000000075FB1000-0x0000000075FB3000-memory.dmp

Filesize
8KB

Download
memory/1504-60-0x000000000DA70000-0x000000000DCE7000-memory.dmp

Filesize
2.5MB

Download
memory/1504-54-0x0000000001E60000-0x00000000025CA000-memory.dmp

Filesize
7.4MB

Download
memory/1504-57-0x00000000025D0000-0x0000000002748000-memory.dmp

Filesize
1.5MB

Download
memory/1504-56-0x00000000025D0000-0x0000000002748000-memory.dmp

Filesize
1.5MB

Download
memory/1504-59-0x000000000DA70000-0x000000000DCE7000-memory.dmp

Filesize
2.5MB

Download
memory/1504-55-0x0000000001E60000-0x00000000025CA000-memory.dmp

Filesize
7.4MB

Download

Analysis

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