c3c1e712df1d5f74de1a1e243b3b087830adbb602e37c5e811118f04926bfbf2

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22-04-2024 07:43

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General

Target

2024-04-22_51c89f44030a3162a6963ff8cbae1cc9_cryptolocker.exe
Size

51KB
MD5

51c89f44030a3162a6963ff8cbae1cc9
SHA1

efd2e2575971bdd4bbf4c98c5765a7b9edd735dc
SHA256

c3c1e712df1d5f74de1a1e243b3b087830adbb602e37c5e811118f04926bfbf2
SHA512

977d33aaf311b77856a541d860fda8fadf5854cd86bfb0d865cb3fe438906c7d6f72a5ca5f49447465b75c59047f67c18f0bd4354e4399db780289bfb3d6d2a1
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxb:X6QFElP6n+gJBMOtEvwDpjBtExb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-22_51c89f44030a3162a6963ff8cbae1cc9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4932	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 4360 wrote to memory of 4932	4360	2024-04-22_51c89f44030a3162a6963ff8cbae1cc9_cryptolocker.exe	85
PID 4360 wrote to memory of 4932	4360	2024-04-22_51c89f44030a3162a6963ff8cbae1cc9_cryptolocker.exe	85
PID 4360 wrote to memory of 4932	4360	2024-04-22_51c89f44030a3162a6963ff8cbae1cc9_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-22_51c89f44030a3162a6963ff8cbae1cc9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_51c89f44030a3162a6963ff8cbae1cc9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4932

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
51KB

MD5
7530cffa818786c3dae5113ed842640d

SHA1
de7d1c563b02903a9f2de085cdb4f80b657927a5

SHA256
23fcb4e8e1665c8a8860d80c25cc616c366683a21603205a13cf27d759b614d0

SHA512
af6d59113acd75b47686397623ceaf12f721f6d804a8297593957f67c5d9248d4ce6e3477fa5b9dfa77f02ffcc0f8f7d576d078145baadf39e2f7267dd83334d

Download Submit
memory/4360-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4360-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4360-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4932-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4932-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download