marsstealer | 9fba2c6f51319bc7585cd88948dfe4198a73a95d460d20f7c4ce54f892f84256

Analysis

max time kernel
47s
max time network
27s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
26-12-2023 07:07

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General

Target

shellgpt4.exe
Size

4.0MB
MD5

c62f737ce988b95d667ccfebcfcab323
SHA1

d5a5f8aca605097e98163dd3163c9519fe2d5b7d
SHA256

9fba2c6f51319bc7585cd88948dfe4198a73a95d460d20f7c4ce54f892f84256
SHA512

d6fb67ffec3b2e1d0add413f715b6b27ae9c0c887f05a770e3e15984d11058796ebcdcc9840818f9484990ebfb75e8fef928d1f6812eef3e24cbbce70e86f977
SSDEEP

12288:fLplFN+msYJ2nCuWyEHx7YsvTZq7FUEpJBC:HC9WtZM

Score

10^/10

marsstealer default spyware stealer

Malware Config

Extracted

Family

marsstealer

Botnet

Default

Signatures

Mars Stealer
An infostealer written in C++ based on other infostealers.
stealer marsstealer
Executes dropped EXE 1 IoCs

Processes:

XTFJI3.exe

pid process

2192 XTFJI3.exe
Loads dropped DLL 5 IoCs

Processes:

shellgpt4.exeWerFault.exe

pid process

1052 shellgpt4.exe
1052 shellgpt4.exe
2748 WerFault.exe
2748 WerFault.exe
2748 WerFault.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2748 2192 WerFault.exe XTFJI3.exe

pid	process
2192	XTFJI3.exe

pid	process
1052	shellgpt4.exe
1052	shellgpt4.exe
2748	WerFault.exe
2748	WerFault.exe
2748	WerFault.exe

pid	pid_target	process	target process
2748	2192	WerFault.exe	XTFJI3.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

shellgpt4.exeXTFJI3.exe

description	pid	process	target process
PID 1052 wrote to memory of 2192	1052	shellgpt4.exe	XTFJI3.exe
PID 1052 wrote to memory of 2192	1052	shellgpt4.exe	XTFJI3.exe
PID 1052 wrote to memory of 2192	1052	shellgpt4.exe	XTFJI3.exe
PID 1052 wrote to memory of 2192	1052	shellgpt4.exe	XTFJI3.exe
PID 2192 wrote to memory of 2748	2192	XTFJI3.exe	WerFault.exe
PID 2192 wrote to memory of 2748	2192	XTFJI3.exe	WerFault.exe
PID 2192 wrote to memory of 2748	2192	XTFJI3.exe	WerFault.exe
PID 2192 wrote to memory of 2748	2192	XTFJI3.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\shellgpt4.exe
"C:\Users\Admin\AppData\Local\Temp\shellgpt4.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1052

C:\Users\Admin\AppData\Local\Temp\XTFJI3.exe
"C:\Users\Admin\AppData\Local\Temp\XTFJI3.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2192 -s 776
3⤵
- Loads dropped DLL
- Program crash
PID:2748

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\XTFJI3.exe
Filesize
93KB

MD5
fbfd5c353f3916905974cc6d0016bc4e

SHA1
16389c418d9956e944e0a8d7a6ee19e430f47855

SHA256
2742297eee87a17fad114cea10cf2208224bba9422f8a6e07b590947a738bea8

SHA512
4cba5761823879856d7cd9d4fe2099c0b00dfdad7480fbe126107e99bb187810a047f55d4f77b0fae63ceb5ec4ca78c8f9c9d696ce583d2c97f879a9df6b41a4

Download Submit
\Users\Admin\AppData\Local\Temp\XTFJI3.exe
Filesize
159KB

MD5
cb931b2b653c327a20844180e26675de

SHA1
3e9186e83b682a167d12acb556b544a029059d80

SHA256
d638138809368db6e11149bddef9b835063c26f4b7d657ef1f8da7aec2042d63

SHA512
9c68708ee543199b9d8ed809d69e4394fad5dfdcb324e70b9c2559985dffa3d487d0b8d98af647d871bce1ed47617b7e588f78fc2778641dd461e5dc7a442f32

Download Submit
memory/1052-0-0x00000000000F0000-0x0000000000190000-memory.dmp

Filesize
640KB

Download
memory/1052-1-0x0000000074270000-0x000000007495E000-memory.dmp

Filesize
6.9MB

Download
memory/1052-2-0x00000000004E0000-0x0000000000520000-memory.dmp

Filesize
256KB

Download
memory/1052-13-0x0000000074270000-0x000000007495E000-memory.dmp

Filesize
6.9MB

Download
memory/2192-12-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download