0a241e70badc29bedf3dbb1201ee849a4e688b40ebaa5a48c0b4fdf516dd3e60

Analysis

max time kernel
146s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
17/05/2024, 10:25

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General

Target

2024-05-17_285d3588870195d7d192837154fe4a16_cryptolocker.exe
Size

38KB
MD5

285d3588870195d7d192837154fe4a16
SHA1

c818a0a01a584f4b6a735bffe80cfd8686d44683
SHA256

0a241e70badc29bedf3dbb1201ee849a4e688b40ebaa5a48c0b4fdf516dd3e60
SHA512

9ab8324f70a0b1b3a68ef6dfd022d7849a665f26f95b544eeb7f283f1be7006db87548cdd2e0b946a88601628c2d9c0a2a4833d311894634fbed6b2591dd5edf
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3V6uVjhbuUZ:b7o/2n1TCraU6GD1a4Xt9bRUlV5hbbZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023268-13.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	2024-05-17_285d3588870195d7d192837154fe4a16_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1204	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 628 wrote to memory of 1204	628	2024-05-17_285d3588870195d7d192837154fe4a16_cryptolocker.exe	91
PID 628 wrote to memory of 1204	628	2024-05-17_285d3588870195d7d192837154fe4a16_cryptolocker.exe	91
PID 628 wrote to memory of 1204	628	2024-05-17_285d3588870195d7d192837154fe4a16_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-17_285d3588870195d7d192837154fe4a16_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-17_285d3588870195d7d192837154fe4a16_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1204

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=4444 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:1724

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
38KB

MD5
c0951b3eecd12e1656783e451fc96798

SHA1
6417d7046c4c856382907c8ec9f5511ca9e408b9

SHA256
252b0bd2982a80d7c6b5b488300425aaff715532c90e6434566fb0d217133665

SHA512
fb3caa0f9a6b6a31189be2a0c77124acf4bcac9f02eae7b2f6b3203b1b94c73591faf11dbc28766ec0ca1ad18a6fefe04fb70331eabe27366bfd94974cffeb3a

Download Submit
memory/628-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/628-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/628-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1204-26-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download