marsstealer | cda7c04ea8f3553465e5e52e439575464bc58effcf5e3ec06a332ce49d8bc67b

General

Target

updcenter.exe
Size

690.5MB
MD5

dd4ff31a5a47c044e6c938a79d0ea6ea
SHA1

d4ac3e0d65ed1a58bc04062fa6fb864e9b145de7
SHA256

2b0ff00f0e162969f8a1eac0526d877e4d2f28621be87f3aa1bd9d8bbf934d95
SHA512

5e2af7c12129d06dd8cec68e999f76181b68f4a392322ff8aa43933a53556b4269abb7f88ba0f5a9f6dcb92997fb34a5e0f523dc475a4351b5cbf2cfc73137ca
SSDEEP

6144:viJ/qA4w/y9wth/Fyp6jchSGuA+lMD6RlBPnG:KJ/TB/Up6ghP3+tvG

Score

10^/10

marsstealer default spyware stealer

Malware Config

Extracted

Family

marsstealer

Botnet

Default

C2

23.137.249.5/fs89rh4nfg0.php

Signatures

Mars Stealer
An infostealer written in C++ based on other infostealers.
stealer marsstealer
Loads dropped DLL 2 IoCs

Processes:

AppLaunch.exe

pid process

1640 AppLaunch.exe
1640 AppLaunch.exe
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Suspicious use of SetThreadContext 1 IoCs

Processes:

updcenter.exe

description pid process target process

PID 848 set thread context of 1640 848 updcenter.exe AppLaunch.exe

pid	process
1640	AppLaunch.exe
1640	AppLaunch.exe

description	pid	process	target process
PID 848 set thread context of 1640	848	updcenter.exe	AppLaunch.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:

AppLaunch.exe

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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

676 timeout.exe

pid	process
676	timeout.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

updcenter.exeAppLaunch.execmd.exe

description	pid	process	target process
PID 848 wrote to memory of 1640	848	updcenter.exe	AppLaunch.exe
PID 848 wrote to memory of 1640	848	updcenter.exe	AppLaunch.exe
PID 848 wrote to memory of 1640	848	updcenter.exe	AppLaunch.exe
PID 848 wrote to memory of 1640	848	updcenter.exe	AppLaunch.exe
PID 848 wrote to memory of 1640	848	updcenter.exe	AppLaunch.exe
PID 848 wrote to memory of 1640	848	updcenter.exe	AppLaunch.exe
PID 848 wrote to memory of 1640	848	updcenter.exe	AppLaunch.exe
PID 848 wrote to memory of 1640	848	updcenter.exe	AppLaunch.exe
PID 848 wrote to memory of 1640	848	updcenter.exe	AppLaunch.exe
PID 1640 wrote to memory of 1472	1640	AppLaunch.exe	cmd.exe
PID 1640 wrote to memory of 1472	1640	AppLaunch.exe	cmd.exe
PID 1640 wrote to memory of 1472	1640	AppLaunch.exe	cmd.exe
PID 1640 wrote to memory of 1472	1640	AppLaunch.exe	cmd.exe
PID 1640 wrote to memory of 1472	1640	AppLaunch.exe	cmd.exe
PID 1640 wrote to memory of 1472	1640	AppLaunch.exe	cmd.exe
PID 1640 wrote to memory of 1472	1640	AppLaunch.exe	cmd.exe
PID 1472 wrote to memory of 676	1472	cmd.exe	timeout.exe
PID 1472 wrote to memory of 676	1472	cmd.exe	timeout.exe
PID 1472 wrote to memory of 676	1472	cmd.exe	timeout.exe
PID 1472 wrote to memory of 676	1472	cmd.exe	timeout.exe
PID 1472 wrote to memory of 676	1472	cmd.exe	timeout.exe
PID 1472 wrote to memory of 676	1472	cmd.exe	timeout.exe
PID 1472 wrote to memory of 676	1472	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\updcenter.exe
"C:\Users\Admin\AppData\Local\Temp\updcenter.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:848

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1640

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:1472

C:\Windows\SysWOW64\timeout.exe
timeout /t 5
4⤵
- Delays execution with timeout.exe
PID:676

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\ProgramData\mozglue.dll
Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\nss3.dll
Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
memory/676-91-0x0000000000000000-mapping.dmp

Download
memory/1472-88-0x0000000000000000-mapping.dmp

Download
memory/1640-54-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1640-56-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1640-63-0x000000000043C0B2-mapping.dmp

Download
memory/1640-64-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1640-65-0x0000000075041000-0x0000000075043000-memory.dmp

Filesize
8KB

Download
memory/1640-66-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1640-67-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1640-89-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download

Analysis

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