monster | 8f7f41837b9cc115588a83268e8f240149e07859eb1a811aaf135c03d14dbe0c

Analysis

max time kernel
239s
max time network
240s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
29-08-2024 22:39

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General

Target

8f7f41837b9cc115588a83268e8f240149e07859eb1a811aaf135c03d14dbe0c.exe
Size

10.5MB
MD5

e6d4b7b529cc401a1c528e8833352039
SHA1

7b2837a2c9eea49e328a425db174a3b5c77d6bb5
SHA256

8f7f41837b9cc115588a83268e8f240149e07859eb1a811aaf135c03d14dbe0c
SHA512

35804a8eb6c31da2b8d36518bd1c2e9afeb5efbb522f2fc47b8d4ba83fb525bd65210732aa4823d7da8aa4f8b5accb4817588a8e103ab7a10e87a585d6cf4ea3
SSDEEP

196608:/S0cuyka/QRjnlhhitMYQRs53WiJpP4vdfoOjvHNCtT4732ZYWf1:/SzEj30mDRs9pPP4vpR32ZYWf

Score

10^/10

monster stealer

Malware Config

Signatures

Detects Monster Stealer. 2 IoCs

resource	yara_rule
behavioral1/files/0x00070000000186d9-35.dat	family_monster
behavioral1/memory/2812-40-0x000000013F6F0000-0x0000000140716000-memory.dmp	family_monster

Monster
Monster is a Golang stealer that was discovered in 2024.
stealer monster

Executes dropped EXE 1 IoCs

pid	Process
2812	stub.exe

Loads dropped DLL 2 IoCs

pid	Process
2744	8f7f41837b9cc115588a83268e8f240149e07859eb1a811aaf135c03d14dbe0c.exe
2812	stub.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 2812	2744	8f7f41837b9cc115588a83268e8f240149e07859eb1a811aaf135c03d14dbe0c.exe	30
PID 2744 wrote to memory of 2812	2744	8f7f41837b9cc115588a83268e8f240149e07859eb1a811aaf135c03d14dbe0c.exe	30
PID 2744 wrote to memory of 2812	2744	8f7f41837b9cc115588a83268e8f240149e07859eb1a811aaf135c03d14dbe0c.exe	30

C:\Users\Admin\AppData\Local\Temp\8f7f41837b9cc115588a83268e8f240149e07859eb1a811aaf135c03d14dbe0c.exe
"C:\Users\Admin\AppData\Local\Temp\8f7f41837b9cc115588a83268e8f240149e07859eb1a811aaf135c03d14dbe0c.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Users\Admin\AppData\Local\Temp\onefile_2744_133694447483838000\stub.exe
  C:\Users\Admin\AppData\Local\Temp\8f7f41837b9cc115588a83268e8f240149e07859eb1a811aaf135c03d14dbe0c.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\onefile_2744_133694447483838000\python310.dll

Filesize
4.3MB

MD5
c80b5cb43e5fe7948c3562c1fff1254e

SHA1
f73cb1fb9445c96ecd56b984a1822e502e71ab9d

SHA256
058925e4bbfcb460a3c00ec824b8390583baef0c780a7c7ff01d43d9eec45f20

SHA512
faa97a9d5d2a0bf78123f19f8657c24921b907268938c26f79e1df6d667f7bee564259a3a11022e8629996406cda9fa00434bb2b1de3e10b9bddc59708dbad81

Download Submit
\Users\Admin\AppData\Local\Temp\onefile_2744_133694447483838000\stub.exe

Filesize
15.9MB

MD5
d66b6390d1b5b309676b59d5017869a9

SHA1
b1821d78403faa151cd771a9df7e140b0ee686b8

SHA256
e3499112471e1fee441ff5ea3302661d6089c46d45922a1aaca547712352702f

SHA512
55f6a8dd7e2fd783469bd608348f659aa28c3ceec3f4fe0fa3ac362d745da0a3e518efff2c54e550102cb8b008617d24ca4bb7169ace5ecc0b6c856be61770d6

Download Submit
memory/2744-75-0x000000013F660000-0x0000000140107000-memory.dmp

Filesize
10.7MB

Download
memory/2812-40-0x000000013F6F0000-0x0000000140716000-memory.dmp

Filesize
16.1MB

Download