d2d7544230aaad4e83016629e6d45245cfbd350682123b34755889010850e42e

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2024, 12:30

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General

Target

2024-01-23_45931d149b2b3f29414f083806f66573_cryptolocker.exe
Size

82KB
MD5

45931d149b2b3f29414f083806f66573
SHA1

377992fa8e4912f9685d867c93ca40d2a2aba4b5
SHA256

d2d7544230aaad4e83016629e6d45245cfbd350682123b34755889010850e42e
SHA512

39c329579c2dc2c60b5f5d6de93063ce7a70ae3cf4252a415eabd3905036bd7b9366cba65ef4fc54a9781c56547b1489d95d7ecadf5444f21f141f563db3aa25
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNlVSL8s:V6a+pOtEvwDpjvpW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002325d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002325d-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-23_45931d149b2b3f29414f083806f66573_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4624	asih.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 2384 wrote to memory of 4624	2384	2024-01-23_45931d149b2b3f29414f083806f66573_cryptolocker.exe	83
PID 2384 wrote to memory of 4624	2384	2024-01-23_45931d149b2b3f29414f083806f66573_cryptolocker.exe	83
PID 2384 wrote to memory of 4624	2384	2024-01-23_45931d149b2b3f29414f083806f66573_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-01-23_45931d149b2b3f29414f083806f66573_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_45931d149b2b3f29414f083806f66573_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\asih.exe

Filesize
83KB

MD5
3b6f036441ba41b4d874d1c4d162ac49

SHA1
1df33b1a7c95b2dd165d323195a9edba9b1fc9cc

SHA256
b5105d1edbc40afccbb6b0c88b0cb82bd9d2f94becda03abf3c6233c1800f327

SHA512
58079e706d5aa843e0bfc066d9af52a4e1183ff5a58a55b2c0357669672c9bf410ef124d922dd9add0d5d387b669b01b6339b243630974acbf07f7ad3c0d76fd

Download Submit
memory/2384-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2384-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2384-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download