monster | c753f4842b39952dea5a67174918b80bc7ef57e89b9d54d4197549d22f29b580

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
28-10-2024 19:13

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General

Target

buildjudit.exe
Size

10.7MB
MD5

c09ff1273b09cb1f9c7698ed147bf22e
SHA1

5634aec5671c4fd565694aa12cd3bf11758675d2
SHA256

bf8ce6bb537881386facfe6c1f9003812b985cbc4b9e9addd39e102449868d92
SHA512

e8f19b432dc3be9a6138d6a2f79521599087466d1c55a49d73600c876508ab307a6e65694e0effb5b705fdecdd0e201f588c8d5c3767fe9ae0b8581c318cadac
SSDEEP

196608:JYPBUPXmkw/NHIAj3DxH9pIKwp4+WY6Z0sU+FNuQ4zOZ+1ak3Yzb5:JYpe25NHIAj3D1rf+WYwUaMrz5aP/

Score

10^/10

monster stealer

Malware Config

Signatures

Detects Monster Stealer. 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016d71-35.dat	family_monster
behavioral1/memory/2764-40-0x000000013F8A0000-0x0000000140AD5000-memory.dmp	family_monster

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

Executes dropped EXE 1 IoCs

pid	Process
2764	stub.exe

Loads dropped DLL 2 IoCs

pid	Process
1540	buildjudit.exe
2764	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 1540 wrote to memory of 2764	1540	buildjudit.exe	30
PID 1540 wrote to memory of 2764	1540	buildjudit.exe	30
PID 1540 wrote to memory of 2764	1540	buildjudit.exe	30

C:\Users\Admin\AppData\Local\Temp\buildjudit.exe
"C:\Users\Admin\AppData\Local\Temp\buildjudit.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Users\Admin\AppData\Local\Temp\onefile_1540_133746164336818000\stub.exe
  "C:\Users\Admin\AppData\Local\Temp\buildjudit.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2764

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_1540_133746164336818000\python310.dll

Filesize
4.3MB

MD5
c80b5cb43e5fe7948c3562c1fff1254e

SHA1
f73cb1fb9445c96ecd56b984a1822e502e71ab9d

SHA256
058925e4bbfcb460a3c00ec824b8390583baef0c780a7c7ff01d43d9eec45f20

SHA512
faa97a9d5d2a0bf78123f19f8657c24921b907268938c26f79e1df6d667f7bee564259a3a11022e8629996406cda9fa00434bb2b1de3e10b9bddc59708dbad81

Download Submit
\Users\Admin\AppData\Local\Temp\onefile_1540_133746164336818000\stub.exe

Filesize
17.9MB

MD5
972d9d2422f1a71bed840709024302f8

SHA1
e52170710e3c413ae3cfa45fcdecf19db4aa382c

SHA256
1c666df4eafab03ecde809ffbc40dd60b8ac2fe7bdca5632c5c4002254e6e564

SHA512
3d84252756dcb4820b7794e9a92811d32631b9f3e9bd1a558fd040736b1472c0d00efb6ff7a13ae3bcd327f3bfac2b6ad94a5a3dfbc8ba54511a366c4f4727a6

Download Submit
memory/1540-75-0x000000013F5A0000-0x0000000140075000-memory.dmp

Filesize
10.8MB

Download
memory/2764-40-0x000000013F8A0000-0x0000000140AD5000-memory.dmp

Filesize
18.2MB

Download