f3e3e2d313cea860b997da70586e1c3f324c123db59d99469cd2d5a0014ff4a4

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
26/01/2024, 20:30

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-01-26_5f054f074cf06cb9b5194c545394d6a5_cryptolocker.exe
Size

31KB
MD5

5f054f074cf06cb9b5194c545394d6a5
SHA1

e382182a0f025879c07e4cc5690496c9f7cd03bd
SHA256

f3e3e2d313cea860b997da70586e1c3f324c123db59d99469cd2d5a0014ff4a4
SHA512

4155c8b5492fb54ac9d5af6ba522fcf6849d08491fb8df4d1bad61cdcc972e96d2da101ae0a0da20703c38725fd743cee1dd9e04a52b0310a65a06259b5c3b57
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1Rv3b:b7o/2n1TCraU6GD1a4Xt9bRvr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f9-12.dat	CryptoLocker_rule2

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	2024-01-26_5f054f074cf06cb9b5194c545394d6a5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2180	rewok.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 4256 wrote to memory of 2180	4256	2024-01-26_5f054f074cf06cb9b5194c545394d6a5_cryptolocker.exe	87
PID 4256 wrote to memory of 2180	4256	2024-01-26_5f054f074cf06cb9b5194c545394d6a5_cryptolocker.exe	87
PID 4256 wrote to memory of 2180	4256	2024-01-26_5f054f074cf06cb9b5194c545394d6a5_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-26_5f054f074cf06cb9b5194c545394d6a5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_5f054f074cf06cb9b5194c545394d6a5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4256
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2180

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
32KB

MD5
09562a001394ad8baa39a38208522741

SHA1
7199633332119db93927ee1ba7003a00c81c10f9

SHA256
3c0b9f1a70fa72a29720cbbd26d8935e89f02386703351f93a02b1435148f335

SHA512
5c5e383ac2cd742bc48e82ff8146d69c9bcd2b69c1be69d9b5813b76ac7b0d09a057bb25ee93e50bd117a3ff5b9a09aebaf5896082088cfeaa152de01ef64851

Download Submit
memory/2180-25-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/4256-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4256-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4256-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download