marsstealer | 55e9a4d33f3061257ea342053c42e682e33910c4cd549d01ad2d62cc5e2eed52

Analysis

max time kernel
100s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
21-07-2024 02:31

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General

Target

4f1b216353542729bd0b16185ac2deb0N.exe
Size

159KB
MD5

4f1b216353542729bd0b16185ac2deb0
SHA1

0074acfacd08d1c619582c4adfc315ce9aca56c5
SHA256

55e9a4d33f3061257ea342053c42e682e33910c4cd549d01ad2d62cc5e2eed52
SHA512

f0eff1bb8f7c939de779fdd9cc73276a8e89c54e97c9e28d7572b957da851175695aacd42594259b78678612cfb39ad9806b5d71a834d11bd8a4251e1a7a4d51
SSDEEP

3072:U0AY7MdWZB95zsdpGCiHe2ajQFAeAJSp8Bb8EG:f75v34CCkEeAeU8EG

Score

10^/10

marsstealer default discovery spyware stealer

Malware Config

Extracted

Family

marsstealer

Botnet

Default

94.232.249.206/gate.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:

4f1b216353542729bd0b16185ac2deb0N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000\Control Panel\International\Geo\Nation	4f1b216353542729bd0b16185ac2deb0N.exe

Loads dropped DLL 2 IoCs

Processes:

4f1b216353542729bd0b16185ac2deb0N.exe

pid process

1364 4f1b216353542729bd0b16185ac2deb0N.exe
1364 4f1b216353542729bd0b16185ac2deb0N.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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1364	4f1b216353542729bd0b16185ac2deb0N.exe
1364	4f1b216353542729bd0b16185ac2deb0N.exe

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

Processes:

4f1b216353542729bd0b16185ac2deb0N.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	4f1b216353542729bd0b16185ac2deb0N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4f1b216353542729bd0b16185ac2deb0N.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1500 timeout.exe

pid	process
1500	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

4f1b216353542729bd0b16185ac2deb0N.execmd.exe

description	pid	process	target process
PID 1364 wrote to memory of 4412	1364	4f1b216353542729bd0b16185ac2deb0N.exe	cmd.exe
PID 1364 wrote to memory of 4412	1364	4f1b216353542729bd0b16185ac2deb0N.exe	cmd.exe
PID 1364 wrote to memory of 4412	1364	4f1b216353542729bd0b16185ac2deb0N.exe	cmd.exe
PID 4412 wrote to memory of 1500	4412	cmd.exe	timeout.exe
PID 4412 wrote to memory of 1500	4412	cmd.exe	timeout.exe
PID 4412 wrote to memory of 1500	4412	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\4f1b216353542729bd0b16185ac2deb0N.exe
"C:\Users\Admin\AppData\Local\Temp\4f1b216353542729bd0b16185ac2deb0N.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\4f1b216353542729bd0b16185ac2deb0N.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4412
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:1500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

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/1364-0-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1364-1-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1364-66-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download