marsstealer | 9b60513eb7f309154820d6efe0399d9d0c819c5744ca911d56ed86d77ee9750e

Analysis

max time kernel
121s
max time network
141s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
27-12-2023 01:37

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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

Signatures

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

Processes:

19Z7NAEOBY.exe

pid process

2704 19Z7NAEOBY.exe

pid	process
2704	19Z7NAEOBY.exe

Loads dropped DLL 5 IoCs

Processes:

71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exeWerFault.exe

pid	process
2012	71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe
2012	71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe
1484	WerFault.exe
1484	WerFault.exe
1484	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

1484 2704 WerFault.exe 19Z7NAEOBY.exe

pid	pid_target	process	target process
1484	2704	WerFault.exe	19Z7NAEOBY.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe19Z7NAEOBY.exe

description	pid	process	target process
PID 2012 wrote to memory of 2704	2012	71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe	19Z7NAEOBY.exe
PID 2012 wrote to memory of 2704	2012	71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe	19Z7NAEOBY.exe
PID 2012 wrote to memory of 2704	2012	71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe	19Z7NAEOBY.exe
PID 2012 wrote to memory of 2704	2012	71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe	19Z7NAEOBY.exe
PID 2704 wrote to memory of 1484	2704	19Z7NAEOBY.exe	WerFault.exe
PID 2704 wrote to memory of 1484	2704	19Z7NAEOBY.exe	WerFault.exe
PID 2704 wrote to memory of 1484	2704	19Z7NAEOBY.exe	WerFault.exe
PID 2704 wrote to memory of 1484	2704	19Z7NAEOBY.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe
"C:\Users\Admin\AppData\Local\Temp\71ea59cbedf3c80b6e47bcd746463de8d82b650e0666183a3bd47bf1b2633378.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2012

C:\ProgramData\Package Cache\19Z7NAEOBY.exe
"C:\ProgramData\Package Cache\19Z7NAEOBY.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 836
3⤵
- Loads dropped DLL
- Program crash
PID:1484

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

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

\ProgramData\Package Cache\19Z7NAEOBY.exe
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
\ProgramData\Package Cache\19Z7NAEOBY.exe
Filesize
159KB

MD5
ccbede8d2869535347316a479f0b8095

SHA1
1dd0e7574972260c77ca90638950d83c7b00d8f2

SHA256
afae663cab910a67e7fb519797ff385926b77ee59fa0e96e1853318146d2e179

SHA512
9a0de846ced51215948a16300aec8aeb7cf0ef5c0005a3cb661fc27e85b5d25b3b3278e7c91fbedc9d0a1ec686fdcd8ff07f35b39931a7c28c8b2139dabf4456

Download Submit
memory/2012-1-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download
memory/2012-0-0x0000000000DC0000-0x0000000000E36000-memory.dmp

Filesize
472KB

Download
memory/2012-2-0x0000000004C80000-0x0000000004CC0000-memory.dmp

Filesize
256KB

Download
memory/2012-3-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download
memory/2012-7-0x0000000004C80000-0x0000000004CC0000-memory.dmp

Filesize
256KB

Download
memory/2012-14-0x00000000007A0000-0x00000000007DD000-memory.dmp

Filesize
244KB

Download
memory/2012-9-0x00000000007A0000-0x00000000007DD000-memory.dmp

Filesize
244KB

Download
memory/2012-17-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download
memory/2704-16-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download