bb3909bc17699f82c7f420fe947bba8b693e1f2266c764a11a59e4181245c36e

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22-02-2024 02:36

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General

Target

2024-02-22_82e0f06662af8bd173588934a7d0b0aa_cryptolocker.exe
Size

52KB
MD5

82e0f06662af8bd173588934a7d0b0aa
SHA1

d7a0d1f27fed9535625324f0866a709ba7bd3eee
SHA256

bb3909bc17699f82c7f420fe947bba8b693e1f2266c764a11a59e4181245c36e
SHA512

0ddf94704d1918d498e4334976e5ebc97f09832ef8c3308537a6397e30276e7407b2a2c3b7b6fd8f800039253eae7447f6eea997dd98ecb7c8fd093707beee94
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakl+:V6a+pOtEvwDpjF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000230eb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000230eb-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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-22_82e0f06662af8bd173588934a7d0b0aa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1268	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 1224 wrote to memory of 1268	1224	2024-02-22_82e0f06662af8bd173588934a7d0b0aa_cryptolocker.exe	80
PID 1224 wrote to memory of 1268	1224	2024-02-22_82e0f06662af8bd173588934a7d0b0aa_cryptolocker.exe	80
PID 1224 wrote to memory of 1268	1224	2024-02-22_82e0f06662af8bd173588934a7d0b0aa_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-02-22_82e0f06662af8bd173588934a7d0b0aa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_82e0f06662af8bd173588934a7d0b0aa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1268

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
52KB

MD5
1a1fc3c354904429a855d7301bdca68a

SHA1
01e0310901f633ab0ac70772319352403de0a633

SHA256
5f0e121ffb138f00f816112cc3f8ce26edab15be11d2db8f2eb37a6eae7ff605

SHA512
12e6bf650732e7f8f018d0643bb272350a88478976a0995b245b0c0a8032e91a8bab72388b0c08924b4e63fad34418993d0503dca4dce225aa02c0e034f09388

Download Submit
memory/1224-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1224-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1224-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download