marsstealer | 9b60513eb7f309154820d6efe0399d9d0c819c5744ca911d56ed86d77ee9750e

Analysis

max time kernel
144s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03-01-2024 15:08

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General

Target

71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe
Size

11.5MB
MD5

9386af6fd41ad96b318f63b35ba418c7
SHA1

68763a50793e358faf7d089ebd27febdd07e3b77
SHA256

71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378
SHA512

9344b70e176d9a892f22c5d192a714c19ec2beb6c6d997e72cc2fd8c7103cfeaa670e6f2fd234834ad18647dfbe9b31e12b49156821abf8391236a62261434f8
SSDEEP

12288:ytaCEOf6hozmO1LhZU2Pn5zvWKr5zaVTxOWQxBH+QWLoRrW4LbMQbKjVa:trOi70kLej

Score

10^/10

marsstealer default spyware stealer

Malware Config

Extracted

Family

marsstealer

Botnet

Default

moscow-post.com/log/loger.php

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe

Executes dropped EXE 1 IoCs

Processes:

GU25WOTFLR.exe

pid process

4564 GU25WOTFLR.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

4168 4564 WerFault.exe GU25WOTFLR.exe

pid	process
4564	GU25WOTFLR.exe

pid	pid_target	process	target process
4168	4564	WerFault.exe	GU25WOTFLR.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe

description	pid	process	target process
PID 4020 wrote to memory of 4564	4020	71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe	GU25WOTFLR.exe
PID 4020 wrote to memory of 4564	4020	71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe	GU25WOTFLR.exe
PID 4020 wrote to memory of 4564	4020	71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe	GU25WOTFLR.exe

C:\Users\Admin\AppData\Local\Temp\71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe
"C:\Users\Admin\AppData\Local\Temp\71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4020

C:\ProgramData\ssh\GU25WOTFLR.exe
"C:\ProgramData\ssh\GU25WOTFLR.exe"
2⤵
- Executes dropped EXE
PID:4564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4564 -s 1364
3⤵
- Program crash
PID:4168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4564 -ip 4564
1⤵
PID:1480

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

Query Registry

T1012

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:\ProgramData\ssh\GU25WOTFLR.exe
Filesize
159KB

MD5
ccbede8d2869535347316a479f0b8095

SHA1
1dd0e7574972260c77ca90638950d83c7b00d8f2

SHA256
afae663cab910a67e7fb519797ff385926b77ee59fa0e96e1853318146d2e179

SHA512
9a0de846ced51215948a16300aec8aeb7cf0ef5c0005a3cb661fc27e85b5d25b3b3278e7c91fbedc9d0a1ec686fdcd8ff07f35b39931a7c28c8b2139dabf4456

Download Submit
C:\ProgramData\ssh\GU25WOTFLR.exe
Filesize
86KB

MD5
23fdefb7cb8d79af78f38d3ce7bff1e3

SHA1
3022005bc7cde22253e0fef75daf5b84c394b486

SHA256
fcd64b80f7bd7c350a19ff58ed5424831e76b9fc97a9ee8dac9c323caeff3a92

SHA512
901ad42698c33e41a94ee2774bf8ef9cc43eca693d4846fcd16c448beb48ff07347924db8f9d0035dd31c524275563dce154fd10eb53cbf49e97757f82ab1526

Download Submit
memory/4020-0-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/4020-1-0x0000000000470000-0x00000000004E6000-memory.dmp

Filesize
472KB

Download
memory/4020-2-0x0000000004E50000-0x0000000004E60000-memory.dmp

Filesize
64KB

Download
memory/4020-13-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/4564-10-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/4564-15-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download