monster | 18687a2ceebf3eda4a11a2ef0b1d85360d8837ad05c1b57f9f749ea06578848e

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
03-11-2024 02:19

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General

Target

18687a2ceebf3eda4a11a2ef0b1d85360d8837ad05c1b57f9f749ea06578848e.exe
Size

10.7MB
MD5

2cb47309bb7dde63256835d5c872b2f9
SHA1

8baa9effc09cf80b4a1bac1aa2aa92b38c812f1d
SHA256

18687a2ceebf3eda4a11a2ef0b1d85360d8837ad05c1b57f9f749ea06578848e
SHA512

3db4a42cbf6bc26d77320bf747e7244e54320b5e6ebf6a65bfd731beb7e99958bc5b7e9fe3ab1579becd42c588789c2185be74f143d120041b0331b316017104
SSDEEP

196608:0fz2+H2MV7hNz9MAW6gqN7jurlhL3UfwtkABUZsNp24A2kfDhdGBeIz4:8n2MV9NZMAZgqNHupNkfEkABUSnjQF8

Score

10^/10

monster stealer

Malware Config

Signatures

Detects Monster Stealer. 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000015d59-35.dat	family_monster
behavioral1/memory/2800-40-0x000000013FB10000-0x0000000140B7B000-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
2800	stub.exe

Loads dropped DLL 2 IoCs

pid	Process
1700	18687a2ceebf3eda4a11a2ef0b1d85360d8837ad05c1b57f9f749ea06578848e.exe
2800	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 1700 wrote to memory of 2800	1700	18687a2ceebf3eda4a11a2ef0b1d85360d8837ad05c1b57f9f749ea06578848e.exe	31
PID 1700 wrote to memory of 2800	1700	18687a2ceebf3eda4a11a2ef0b1d85360d8837ad05c1b57f9f749ea06578848e.exe	31
PID 1700 wrote to memory of 2800	1700	18687a2ceebf3eda4a11a2ef0b1d85360d8837ad05c1b57f9f749ea06578848e.exe	31

C:\Users\Admin\AppData\Local\Temp\18687a2ceebf3eda4a11a2ef0b1d85360d8837ad05c1b57f9f749ea06578848e.exe
"C:\Users\Admin\AppData\Local\Temp\18687a2ceebf3eda4a11a2ef0b1d85360d8837ad05c1b57f9f749ea06578848e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Users\Admin\AppData\Local\Temp\onefile_1700_133750739963626000\stub.exe
  C:\Users\Admin\AppData\Local\Temp\18687a2ceebf3eda4a11a2ef0b1d85360d8837ad05c1b57f9f749ea06578848e.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2800

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_1700_133750739963626000\python310.dll

Filesize
4.3MB

MD5
c80b5cb43e5fe7948c3562c1fff1254e

SHA1
f73cb1fb9445c96ecd56b984a1822e502e71ab9d

SHA256
058925e4bbfcb460a3c00ec824b8390583baef0c780a7c7ff01d43d9eec45f20

SHA512
faa97a9d5d2a0bf78123f19f8657c24921b907268938c26f79e1df6d667f7bee564259a3a11022e8629996406cda9fa00434bb2b1de3e10b9bddc59708dbad81

Download Submit
\Users\Admin\AppData\Local\Temp\onefile_1700_133750739963626000\stub.exe

Filesize
16.2MB

MD5
9cb4cf7e6b271413430c9b3eea8aafa2

SHA1
5d789fc3756e2f5e113aeba0f9f3053e88db59b3

SHA256
0728e88b0c32282e2750d77d172c2454a0fa53bf6a093c7885c93641cf5e794f

SHA512
f34db1ba8e1083570318c05370cc24af61dd507532c1c867cd90cc6b5c7fbae2dfde9b4dc13edc1e5587efe74ebfdccfa2c0e095f2ae0477c49cdecc5e6d034b

Download Submit
memory/1700-75-0x000000013FF30000-0x0000000140A05000-memory.dmp

Filesize
10.8MB

Download
memory/2800-40-0x000000013FB10000-0x0000000140B7B000-memory.dmp

Filesize
16.4MB

Download