marsstealer | 71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378

General

Target

[Hentai JOI] MrsNuzuki Patreon 2023.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

Signatures

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

Processes:

T3YLJIMS.exe

pid process

2056 T3YLJIMS.exe
Loads dropped DLL 5 IoCs

Processes:

[Hentai JOI] MrsNuzuki Patreon 2023.exeWerFault.exe

pid process

1068 [Hentai JOI] MrsNuzuki Patreon 2023.exe
1068 [Hentai JOI] MrsNuzuki Patreon 2023.exe
2096 WerFault.exe
2096 WerFault.exe
2096 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

2096 2056 WerFault.exe T3YLJIMS.exe

pid	process
2056	T3YLJIMS.exe

pid	process
1068	[Hentai JOI] MrsNuzuki Patreon 2023.exe
1068	[Hentai JOI] MrsNuzuki Patreon 2023.exe
2096	WerFault.exe
2096	WerFault.exe
2096	WerFault.exe

pid	pid_target	process	target process
2096	2056	WerFault.exe	T3YLJIMS.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

[Hentai JOI] MrsNuzuki Patreon 2023.exeT3YLJIMS.exe

description	pid	process	target process
PID 1068 wrote to memory of 2056	1068	[Hentai JOI] MrsNuzuki Patreon 2023.exe	T3YLJIMS.exe
PID 1068 wrote to memory of 2056	1068	[Hentai JOI] MrsNuzuki Patreon 2023.exe	T3YLJIMS.exe
PID 1068 wrote to memory of 2056	1068	[Hentai JOI] MrsNuzuki Patreon 2023.exe	T3YLJIMS.exe
PID 1068 wrote to memory of 2056	1068	[Hentai JOI] MrsNuzuki Patreon 2023.exe	T3YLJIMS.exe
PID 2056 wrote to memory of 2096	2056	T3YLJIMS.exe	WerFault.exe
PID 2056 wrote to memory of 2096	2056	T3YLJIMS.exe	WerFault.exe
PID 2056 wrote to memory of 2096	2056	T3YLJIMS.exe	WerFault.exe
PID 2056 wrote to memory of 2096	2056	T3YLJIMS.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\[Hentai JOI] MrsNuzuki Patreon 2023.exe
"C:\Users\Admin\AppData\Local\Temp\[Hentai JOI] MrsNuzuki Patreon 2023.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1068

C:\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x86 Redistributable Setup_10.0.40219\T3YLJIMS.exe
"C:\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x86 Redistributable Setup_10.0.40219\T3YLJIMS.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2056 -s 848
3⤵
- Loads dropped DLL
- Program crash
PID:2096

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x86 Redistributable Setup_10.0.40219\T3YLJIMS.exe
Filesize
97KB

MD5
f01befc15bb2e0a9f54e427731e13ec1

SHA1
a0f32f1c63687fd678ac8ba9161cc345f809606f

SHA256
d71f655ba364e807a234adf290ad48910c9bad749998ba512d72fca5777ce6a0

SHA512
1648f12b2eed120e29e9fba1bc8a59ae8faa077336a33562de32fc5e5100d83bf574a858ba6f2aa62cce6aeb5c513c8dc3f69e2394bb6fc0618d1f07dcc2d9e9

Download Submit
\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x86 Redistributable Setup_10.0.40219\T3YLJIMS.exe
Filesize
113KB

MD5
c138cc7d4791df2d9930f063dfaccdc8

SHA1
91baab622ac9dbaafff064c27281cf48ed6bee38

SHA256
c4266efc851f47068fa6afda4726e88ef55ace22f222f71d80fef8abcc22b9a8

SHA512
a572687fd1082c8601e481a51ac6bdd426cbc393789eee3a7a0a3996bff66dd15f3c98ec2826726239be6b66f6f81c07c17b2e030e3efd2131ac9718fcb5e91f

Download Submit
\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x86 Redistributable Setup_10.0.40219\T3YLJIMS.exe
Filesize
81KB

MD5
e1a63920912a17d77ba4661d309b835f

SHA1
500e7d02ec258ac0b82aabc49236f5e373173b61

SHA256
ed054537934e1ed7698219315982213ae145985ecb1b40a0dc1a19b4108de7d0

SHA512
c6ea5e0bb4f25b2a2e9d9b5eabeb2a03b7145c434df77f31fb2b23b86d1a717026cf868e8ee7a556a9aac3aaeffdae522e9b54411b750353ac433a4c194ede3c

Download Submit
\Users\Admin\AppData\Local\Temp\Microsoft Visual C++ 2010 x86 Redistributable Setup_10.0.40219\T3YLJIMS.exe
Filesize
159KB

MD5
ccbede8d2869535347316a479f0b8095

SHA1
1dd0e7574972260c77ca90638950d83c7b00d8f2

SHA256
afae663cab910a67e7fb519797ff385926b77ee59fa0e96e1853318146d2e179

SHA512
9a0de846ced51215948a16300aec8aeb7cf0ef5c0005a3cb661fc27e85b5d25b3b3278e7c91fbedc9d0a1ec686fdcd8ff07f35b39931a7c28c8b2139dabf4456

Download Submit
memory/1068-0-0x00000000013A0000-0x0000000001416000-memory.dmp

Filesize
472KB

Download
memory/1068-1-0x0000000074D60000-0x000000007544E000-memory.dmp

Filesize
6.9MB

Download
memory/1068-2-0x0000000000B50000-0x0000000000B90000-memory.dmp

Filesize
256KB

Download
memory/1068-13-0x0000000000AB0000-0x0000000000AED000-memory.dmp

Filesize
244KB

Download
memory/1068-11-0x0000000000AB0000-0x0000000000AED000-memory.dmp

Filesize
244KB

Download
memory/1068-15-0x0000000074D60000-0x000000007544E000-memory.dmp

Filesize
6.9MB

Download
memory/2056-14-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download

Analysis

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