763eb1caca66418946b7a073d36c2582369be78e176bd97a7246bfec29889125

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 12:48

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe
Size

34KB
MD5

7e39dc4026906543a589eec03e03e842
SHA1

34f36cf123cf45eb5b735ac58ad3a6308f14541e
SHA256

763eb1caca66418946b7a073d36c2582369be78e176bd97a7246bfec29889125
SHA512

916119a04f0c60f7df66f341ba01abc074e8a79900f3d3599f068e929901107e074573c4922692fa0eb3f7397c8c5c5897866708bebecc24c76ef8408ee82a02
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qE4kbg8:b7o/2n1TCraU6GD1a4Xt9bRU6zAx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2120	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 432 wrote to memory of 2120	432	2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe	87
PID 432 wrote to memory of 2120	432	2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe	87
PID 432 wrote to memory of 2120	432	2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:432
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2120

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
34KB

MD5
e3ddf393c3fc0fcac6795de0713a99ee

SHA1
e806593d9cd8ccb436c80228d11a4194a3bd9e8b

SHA256
49a43e6a12ed6cf65a81c190e5e5bf1cf8f749a61b09c2020b54a52b1c1a1143

SHA512
efa92e2764728a8da78e67f3524ed1e36d1532140a308bde8eb233fdb59262e2756bbe77d2093e7ae83514c42e7f9a86c6d43e5d494544bc528ea997c295fbf5

Download Submit
memory/432-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/432-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/432-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2120-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download