efb4576252f050882a3dbbfd42f5f927ca4a70c037e21651bebc14c09dba0e9a

Analysis

max time kernel
148s
max time network
151s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04-02-2024 01:34

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General

Target

2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe
Size

37KB
MD5

67dc0cac329f582de1c582dd0d954362
SHA1

e5e70f7692802993ee77084a936c40a3adfa193f
SHA256

efb4576252f050882a3dbbfd42f5f927ca4a70c037e21651bebc14c09dba0e9a
SHA512

0198c612a2340ce90f379bb1ed35dc17e09779a898426de1458e39c978840a204b82e070f6a0d7bdaa8f5db9096e20d4a6f23a8134174ee006edef255fafbc51
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/G:X6QFElP6n+gJQMOtEvwDpjBsYK/G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000122d5-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000122d5-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2492	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2528	2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2492	2528	2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe	28
PID 2528 wrote to memory of 2492	2528	2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe	28
PID 2528 wrote to memory of 2492	2528	2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe	28
PID 2528 wrote to memory of 2492	2528	2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2492

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

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
37KB

MD5
203260cbd2e67925d46ef4eb3b19e2f0

SHA1
7263d2674dc954c9f0fd39c39a37cdc562ffed3d

SHA256
db7874e51a71f0f1bd493c5434dacf994989dc4d3d2a8ad20ceff78f878893c3

SHA512
5e65b33e35ecc5322f6eeb20b6ab368dcb0b0a216a59bf03508522de1e565a9dbee9049055ab309a53510beab1c8b75e3ed5f9bf53ca0b2dd3c265a9d85e3d50

Download Submit
memory/2492-16-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2492-15-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2528-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2528-1-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2528-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download