4fec8eb191c397d2666a2ed6e4b2825215fe8f2c17a98ea4f86b33de686acf1f

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 04:27

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General

Target

2024-02-14_ecc60304210dbd7eac349daf9bb5077d_cryptolocker.exe
Size

57KB
MD5

ecc60304210dbd7eac349daf9bb5077d
SHA1

66a8088b3526e40fbd9ec9390c287f82565e03cb
SHA256

4fec8eb191c397d2666a2ed6e4b2825215fe8f2c17a98ea4f86b33de686acf1f
SHA512

3dae476090dd71713ec497091df4de883780debb967a7e6c0df53ddea0fcde792b75086e20572c737a6fe7fecf14da0208b7a7e22fbad38c5dc8898d4739b301
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylsPxAb/R:79mqyNhQMOtEvwDpjBPY7xv3gy5cR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2940-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231f9-13.dat	CryptoLocker_rule2
behavioral2/memory/2940-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4484-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2940-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000231f9-13.dat	CryptoLocker_set1
behavioral2/memory/2940-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4484-18-0x0000000000500000-0x000000000050F000-memory.dmp	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	2024-02-14_ecc60304210dbd7eac349daf9bb5077d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4484	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 2940 wrote to memory of 4484	2940	2024-02-14_ecc60304210dbd7eac349daf9bb5077d_cryptolocker.exe	85
PID 2940 wrote to memory of 4484	2940	2024-02-14_ecc60304210dbd7eac349daf9bb5077d_cryptolocker.exe	85
PID 2940 wrote to memory of 4484	2940	2024-02-14_ecc60304210dbd7eac349daf9bb5077d_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-14_ecc60304210dbd7eac349daf9bb5077d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_ecc60304210dbd7eac349daf9bb5077d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4484

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
58KB

MD5
6518214751ac4699a522eb4aedbe2123

SHA1
8d2d6f863c9e46314ba1c04a6e1bee7e4c35d300

SHA256
f04d41503d26ffd11f736af99e8ea6f5515c888510e8e4a4112a62434e8c41a0

SHA512
ab197583fe860f5e3e7e8b5cc767153d1b3a33d2c4c4520335f3d2363bce4e096fe63bc8ed6fdef56f2034cf3a02b98d9cfdc3e4b65f756d7be18b49b0a4a4e1

Download Submit
memory/2940-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2940-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/2940-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/2940-3-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/2940-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4484-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4484-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4484-24-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download