72e080f459b1af35882eacd1de96225408329f793fe7dacfc632d147ce73cf54

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
25-04-2024 04:34

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General

Target

2024-04-25_4bf2ada34e5ef3f2b99078e0176ec527_cryptolocker.exe
Size

34KB
MD5

4bf2ada34e5ef3f2b99078e0176ec527
SHA1

4f45aeb564c186bdf844b00ccf8509622764640b
SHA256

72e080f459b1af35882eacd1de96225408329f793fe7dacfc632d147ce73cf54
SHA512

bfcb97fa0f7c5e65b8539326d1df647afdfa3e392bb43e9f69d24b231a3e8f98fde3af4a2392feb5daf65349ebb8a7af1ae2c06b4c57928b5451f0dabd7d298d
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RwFtzxt16D:b7o/2n1TCraU6GD1a4Xt9bRwrbK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-25_4bf2ada34e5ef3f2b99078e0176ec527_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4684	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 2704 wrote to memory of 4684	2704	2024-04-25_4bf2ada34e5ef3f2b99078e0176ec527_cryptolocker.exe	89
PID 2704 wrote to memory of 4684	2704	2024-04-25_4bf2ada34e5ef3f2b99078e0176ec527_cryptolocker.exe	89
PID 2704 wrote to memory of 4684	2704	2024-04-25_4bf2ada34e5ef3f2b99078e0176ec527_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-25_4bf2ada34e5ef3f2b99078e0176ec527_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_4bf2ada34e5ef3f2b99078e0176ec527_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4684

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
34KB

MD5
92344ad90f2f8d24f20d1ab885d682cc

SHA1
c8cd206f602c6798dbb4c6b88df076396bf18c7d

SHA256
25833eec9e892c08cab967deecffa9be1d659ebd68c5b6f5b8a5c03cb849c44c

SHA512
fa608aa302411b6ed26cf8a016ee6eb0b33e735d9122e444c15be4f7556258fe6da1fb4686ef59c89ea935a8078fea2b9e80541731068e32bf5aca2892e75478

Download Submit
memory/2704-0-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/2704-1-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/2704-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4684-25-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download