159fc68d8dcd775b0d89d2af1cc94419b2a5d4fa2192b123a2edb6966f8dc6eb

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/04/2024, 11:28

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General

Target

2024-04-26_585aab84e070512bdaa73be1abc4fb4b_cryptolocker.exe
Size

37KB
MD5

585aab84e070512bdaa73be1abc4fb4b
SHA1

f3664516cf041ebf46b765b327a220f2c4689c96
SHA256

159fc68d8dcd775b0d89d2af1cc94419b2a5d4fa2192b123a2edb6966f8dc6eb
SHA512

4cfb18fae7ef68b5f584dcba97bcc860539a552f23b248376c55bde0fd3f0128b2a7383cecce3fdeb967db864b18388c0a43a5aff2f5d2ad152dedd1ee0236bf
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mi:bc/y2lLRU6zA6qi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000002324f-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-26_585aab84e070512bdaa73be1abc4fb4b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3432	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 4664 wrote to memory of 3432	4664	2024-04-26_585aab84e070512bdaa73be1abc4fb4b_cryptolocker.exe	91
PID 4664 wrote to memory of 3432	4664	2024-04-26_585aab84e070512bdaa73be1abc4fb4b_cryptolocker.exe	91
PID 4664 wrote to memory of 3432	4664	2024-04-26_585aab84e070512bdaa73be1abc4fb4b_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-26_585aab84e070512bdaa73be1abc4fb4b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_585aab84e070512bdaa73be1abc4fb4b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4664
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3432

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4476 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:4352

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
37KB

MD5
b1efdb373a6cca1489e9a4b1e0788eca

SHA1
7429974c568468b197a8cbe18c24dbcd084265bc

SHA256
d46872730e64e1c22429940a7a3830c4e1d0a9d898fa4feb5e25c5c20633cea2

SHA512
be320812378368151964f8d6b747443b80856f891a9d2dd5003cd21d89475250143846e36db1ac164a5052c99476cc58920168e8595dece086f17fa9aeaa53f1

Download Submit
memory/3432-20-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4664-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4664-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4664-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download