marsstealer | 9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b

General

Target

9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b.exe
Size

614KB
MD5

a74c9036ba18a91d23733f21f0965352
SHA1

f39eb55e6fc74d112e7e3b8f72053cf139f1f6d1
SHA256

9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b
SHA512

1cfaed9b4ba552e70f035b326e49b003afc46b4cdfe872a729d6359d835d37864187994815f9a2e18be794888475553648bf4b2f1a6e8b96f64d9bd1691d034f
SSDEEP

12288:6jLIHe+qdOqQ/H6OKnA5feEq8sdvuxi+vC/tKJ+2BAMSsjgZeS1I/XUta93poy:CRtwtvagbCy

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
2712	4DX9RJE7SLSUZX.exe

Loads dropped DLL 5 IoCs

pid	Process
1932	9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b.exe
1932	9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b.exe
2652	WerFault.exe
2652	WerFault.exe
2652	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
2652	2712	WerFault.exe	28

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	4DX9RJE7SLSUZX.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	4DX9RJE7SLSUZX.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 2712	1932	9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b.exe	28
PID 1932 wrote to memory of 2712	1932	9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b.exe	28
PID 1932 wrote to memory of 2712	1932	9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b.exe	28
PID 1932 wrote to memory of 2712	1932	9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b.exe	28
PID 2712 wrote to memory of 2652	2712	4DX9RJE7SLSUZX.exe	31
PID 2712 wrote to memory of 2652	2712	4DX9RJE7SLSUZX.exe	31
PID 2712 wrote to memory of 2652	2712	4DX9RJE7SLSUZX.exe	31
PID 2712 wrote to memory of 2652	2712	4DX9RJE7SLSUZX.exe	31

C:\Users\Admin\AppData\Local\Temp\9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b.exe
"C:\Users\Admin\AppData\Local\Temp\9cc1d2cf5e3b394fbb7f4d470b6c4e094aa8691fc759f9f75faa88a5772c882b.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1932
- C:\ProgramData\4DX9RJE7SLSUZX.exe
  "C:\ProgramData\4DX9RJE7SLSUZX.exe"
  2⤵
  - Executes dropped EXE
  - Modifies system certificate store
  - Suspicious use of WriteProcessMemory
  PID:2712
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 632
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\4DX9RJE7SLSUZX.exe

Filesize
159KB

MD5
14878fb96760ba869271109d832f43a7

SHA1
874f6bcac3ef5682a567483ea5627d38bfbffa8d

SHA256
0c816842e7a1649f0010b7c437a7783f82fd8a62a080adaeaecd871e6578c721

SHA512
f882cfb373f79e823e3284b6dbe09d7df0ea90d0ab20e9399e1ee3af86eec2e8ba5c3b882f6b7f88b0478bc3fdfe05e033ee6fcbc2813faf13558fbec1d0a2e2

Download Submit
memory/1932-0-0x0000000000360000-0x00000000003FE000-memory.dmp

Filesize
632KB

Download
memory/1932-1-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/1932-2-0x0000000004B50000-0x0000000004B90000-memory.dmp

Filesize
256KB

Download
memory/1932-11-0x0000000000670000-0x00000000006AD000-memory.dmp

Filesize
244KB

Download
memory/1932-14-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/2712-13-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download

Analysis

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