marsstealer | 17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744 | Triage

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
07/04/2024, 01:03 UTC

Sharing

Report Analysis Logs

General

Target

17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744.exe
Size

8.8MB
MD5

979d0840f1018723a0c2f1b38e053a87
SHA1

bc00bc18122b597d5484d05f6f1df694fa9f9f64
SHA256

17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744
SHA512

2f6c2f764e0a9e057c25e32911721f47872e76b2cb9320342b7c221d088dab95806fc2d4499fa4151a508dc3a6fc35966d55410b6d53851cc1a382ad7c775729
SSDEEP

12288:u7WDZ2e76xWryJabHBAWAzADGBUghdvfKKmWe4b3hZ1I/p1LBaYXK:V8IKLJZZ1I/pu

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

pid	Process
2172	OLS.exe

Loads dropped DLL 5 IoCs

pid	Process
2152	17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744.exe
2152	17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744.exe
2784	WerFault.exe
2784	WerFault.exe
2784	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

pid	pid_target	Process	procid_target
2784	2172	WerFault.exe	28

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	OLS.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	OLS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2152 wrote to memory of 2172	2152	17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744.exe	28
PID 2152 wrote to memory of 2172	2152	17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744.exe	28
PID 2152 wrote to memory of 2172	2152	17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744.exe	28
PID 2152 wrote to memory of 2172	2152	17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744.exe	28
PID 2172 wrote to memory of 2784	2172	OLS.exe	30
PID 2172 wrote to memory of 2784	2172	OLS.exe	30
PID 2172 wrote to memory of 2784	2172	OLS.exe	30
PID 2172 wrote to memory of 2784	2172	OLS.exe	30

C:\Users\Admin\AppData\Local\Temp\17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744.exe
"C:\Users\Admin\AppData\Local\Temp\17ad92c5d4b0707380de23f0dc97a7d50319d3f332be6a6d9cf30d239d49f744.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Users\Admin\AppData\Roaming\Identities\OLS.exe
  "C:\Users\Admin\AppData\Roaming\Identities\OLS.exe"
  2⤵
  - Executes dropped EXE
  - Modifies system certificate store
  - Suspicious use of WriteProcessMemory
  PID:2172
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2172 -s 1408
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2784

Network

DNS

kenesrakishev.net

OLS.exe

Remote address:

8.8.8.8:53

Request

kenesrakishev.net

IN A

Response

kenesrakishev.net

IN A

173.201.180.75
GET

http://kenesrakishev.net/wp-includes/pomo/po.php

OLS.exe

Remote address:

173.201.180.75:80

Request

GET /wp-includes/pomo/po.php HTTP/1.1
Host: kenesrakishev.net
Connection: Keep-Alive
Cache-Control: no-cache

Response

HTTP/1.1 301 Moved Permanently

Date: Sun, 07 Apr 2024 01:04:28 GMT
Server: Apache
Location: https://kenesrakishev.net/wp-includes/pomo/po.php
Content-Length: 257
Keep-Alive: timeout=5
Connection: Keep-Alive
Content-Type: text/html; charset=iso-8859-1
GET

http://kenesrakishev.net/request

OLS.exe

Remote address:

173.201.180.75:80

Request

GET /request HTTP/1.1
Host: kenesrakishev.net
Cache-Control: no-cache

Response

HTTP/1.1 404 Not Found

Date: Sun, 07 Apr 2024 01:04:30 GMT
Server: Apache
Vary: Accept-Encoding,Cookie
Expires: Wed, 11 Jan 1984 05:00:00 GMT
Cache-Control: no-cache, must-revalidate, max-age=0
Link: <https://kenesrakishev.net/wp-json/>; rel="https://api.w.org/"
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8
GET

https://kenesrakishev.net/wp-includes/pomo/po.php

OLS.exe

Remote address:

173.201.180.75:443

Request

GET /wp-includes/pomo/po.php HTTP/1.1
Connection: Keep-Alive
Cache-Control: no-cache
Host: kenesrakishev.net

Response

HTTP/1.1 200 OK

Date: Sun, 07 Apr 2024 01:04:29 GMT
Server: Apache
Upgrade: h2,h2c
Connection: Upgrade, Keep-Alive
Vary: Accept-Encoding
Content-Length: 0
Keep-Alive: timeout=5
Content-Type: text/html; charset=UTF-8

173.201.180.75:80

http://kenesrakishev.net/request

http

OLS.exe

5.5kB
285.4kB
116
212

HTTP Request

GET http://kenesrakishev.net/wp-includes/pomo/po.php

HTTP Response

301

HTTP Request

GET http://kenesrakishev.net/request

HTTP Response

404
173.201.180.75:443

https://kenesrakishev.net/wp-includes/pomo/po.php

tls, http

OLS.exe

917 B
4.0kB
9
9

HTTP Request

GET https://kenesrakishev.net/wp-includes/pomo/po.php

HTTP Response

200

8.8.8.8:53

kenesrakishev.net

dns

OLS.exe

63 B
79 B
1
1

DNS Request

kenesrakishev.net

DNS Response

173.201.180.75

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

Subvert Trust Controls

Install Root Certificate

Credential Access

Unsecured Credentials

Credentials In Files

Discovery

System Information Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Identities\OLS.exe

Filesize
159KB

MD5
f07befa95b54aa2cd90cfbbfdb9d0942

SHA1
91c44a024b214e656c4279d1223a7beffeef129f

SHA256
d9f52689efae410865d403b2707f5319b99c2985aed876254141fa7a7699e7e3

SHA512
a8b5daf2b7d0b3cec0841953c00e9a58a08373af844ebaf37ada66a260dad9002fb99edb0673388cb9a5544a2908faab09d544cf5099554303cc2da9f4de46b6

Download Submit
memory/2152-0-0x0000000000F40000-0x0000000000FE2000-memory.dmp

Filesize
648KB

Download
memory/2152-1-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2152-2-0x0000000004E30000-0x0000000004E70000-memory.dmp

Filesize
256KB

Download
memory/2152-11-0x0000000000B60000-0x0000000000B9D000-memory.dmp

Filesize
244KB

Download
memory/2152-14-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2152-15-0x0000000000B60000-0x0000000000B9D000-memory.dmp

Filesize
244KB

Download
memory/2172-13-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download