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 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

Processes:

InstallUtil.exe

pid process

840 InstallUtil.exe
840 InstallUtil.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

24426a615e821fbffa83ea6e5b2632ca.exe

description pid process target process

PID 3988 set thread context of 840 3988 24426a615e821fbffa83ea6e5b2632ca.exe InstallUtil.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2688 840 WerFault.exe InstallUtil.exe

pid	process
840	InstallUtil.exe
840	InstallUtil.exe

description	pid	process	target process
PID 3988 set thread context of 840	3988	24426a615e821fbffa83ea6e5b2632ca.exe	InstallUtil.exe

pid	pid_target	process	target process
2688	840	WerFault.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

24426a615e821fbffa83ea6e5b2632ca.exe

pid	process
3988	24426a615e821fbffa83ea6e5b2632ca.exe
3988	24426a615e821fbffa83ea6e5b2632ca.exe
3988	24426a615e821fbffa83ea6e5b2632ca.exe
3988	24426a615e821fbffa83ea6e5b2632ca.exe
3988	24426a615e821fbffa83ea6e5b2632ca.exe
3988	24426a615e821fbffa83ea6e5b2632ca.exe
3988	24426a615e821fbffa83ea6e5b2632ca.exe
3988	24426a615e821fbffa83ea6e5b2632ca.exe
3988	24426a615e821fbffa83ea6e5b2632ca.exe
3988	24426a615e821fbffa83ea6e5b2632ca.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

24426a615e821fbffa83ea6e5b2632ca.exe

description	pid	process	target process
PID 3988 wrote to memory of 840	3988	24426a615e821fbffa83ea6e5b2632ca.exe	InstallUtil.exe
PID 3988 wrote to memory of 840	3988	24426a615e821fbffa83ea6e5b2632ca.exe	InstallUtil.exe
PID 3988 wrote to memory of 840	3988	24426a615e821fbffa83ea6e5b2632ca.exe	InstallUtil.exe
PID 3988 wrote to memory of 840	3988	24426a615e821fbffa83ea6e5b2632ca.exe	InstallUtil.exe
PID 3988 wrote to memory of 840	3988	24426a615e821fbffa83ea6e5b2632ca.exe	InstallUtil.exe

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:3988

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
2⤵
- Loads dropped DLL
PID:840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 1292
3⤵
- Program crash
PID:2688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 840 -ip 840
1⤵
PID:576

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/840-143-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/840-136-0x0000000000000000-mapping.dmp

Download
memory/840-137-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/840-139-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/840-141-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/840-144-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/840-165-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/3988-135-0x0000000010E30000-0x00000000110A7000-memory.dmp

Filesize
2.5MB

Download
memory/3988-142-0x000000000231A000-0x0000000002492000-memory.dmp

Filesize
1.5MB

Download
memory/3988-132-0x00000000024E1000-0x0000000002C4B000-memory.dmp

Filesize
7.4MB

Download
memory/3988-134-0x0000000010E30000-0x00000000110A7000-memory.dmp

Filesize
2.5MB

Download
memory/3988-133-0x000000000231A000-0x0000000002492000-memory.dmp

Filesize
1.5MB

Download

Analysis

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