e64af25ed3ba04835c9945ded0de838be861e458fc2d754b1230c949b574e979

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
19/04/2024, 14:59

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General

Target

2024-04-19_f64d59276253d5b0cb14c5fc5f20324f_cryptolocker.exe
Size

36KB
MD5

f64d59276253d5b0cb14c5fc5f20324f
SHA1

353a98582b8c48ed77b8184bf1fb870b5f79b733
SHA256

e64af25ed3ba04835c9945ded0de838be861e458fc2d754b1230c949b574e979
SHA512

5ba3d355d6da2108ba6d41c0d58ec98d66d92bc0334a46ef878e9a1bf119ac36dd1c38460b47f27a646a464d05b21200ba4dfb914f183d1547662ba89d508453
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mS:bc/y2lLRU6zA6qS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-19_f64d59276253d5b0cb14c5fc5f20324f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5100	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 4788 wrote to memory of 5100	4788	2024-04-19_f64d59276253d5b0cb14c5fc5f20324f_cryptolocker.exe	86
PID 4788 wrote to memory of 5100	4788	2024-04-19_f64d59276253d5b0cb14c5fc5f20324f_cryptolocker.exe	86
PID 4788 wrote to memory of 5100	4788	2024-04-19_f64d59276253d5b0cb14c5fc5f20324f_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-19_f64d59276253d5b0cb14c5fc5f20324f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_f64d59276253d5b0cb14c5fc5f20324f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4788
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:5100

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\rewok.exe

Filesize
36KB

MD5
5ab83700d4905c32d0b09f741cf27484

SHA1
7d2e0f75a53cc4dc6b746b8977769e3b4124e469

SHA256
16a7c2792ce4afcb60de71ebc5746f3ae6d87f5efdaf8eedfe064d841b62e96f

SHA512
8966b5ae26c6d00fc007d6b81e9017693648fbf73c913ddf6e2cb31be2c27b0c614536f6570f5048c049318c5618e4b9767930160dec54e9417d9418d3fd4384

Download Submit
memory/4788-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4788-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4788-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5100-22-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download