e4317473aa8174626cbb6523e43b0a91125380239ab34ebe6620f9d5c0f97869

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 05:04

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General

Target

2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe
Size

37KB
MD5

870ed3c8f2502512727f4db938461974
SHA1

ac0b54516184b6cfa870979cbace898e84b1d7dd
SHA256

e4317473aa8174626cbb6523e43b0a91125380239ab34ebe6620f9d5c0f97869
SHA512

586f16971078cb099e73eb32b7c6e0251cf8e929034ef108eb5934b760702d0e09cc946e8cd56c23ca871b12d0dac1f13347c5fb24d266ea94baaf5d432c203b
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mri:bc/y2lLRU6zA6qG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000235b7-12.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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
112	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 2284 wrote to memory of 112	2284	2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe	91
PID 2284 wrote to memory of 112	2284	2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe	91
PID 2284 wrote to memory of 112	2284	2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2284
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:112

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 --field-trial-handle=1288,i,11746347647270949551,7786733067759450703,262144 --variations-seed-version --mojo-platform-channel-handle=3936 /prefetch:8
1⤵
PID:3168

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
2f5dd1c694a87727a5bb464137ba9d23

SHA1
50985bb7be27eb283aa61587f258c1268295ba21

SHA256
744799267705e31be49ff24857435d231b828afb0b24321e19a1b809a705f577

SHA512
4f9b4480c270d6b00b4eb9ae3ae671f85d40f66a7a6ff374914c007f169ddee7a9b26f9681e0fc92903eb7dc34d07614b043182e41cdf4df9bfddf5ebb88cc34

Download Submit
memory/112-25-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/2284-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2284-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2284-8-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download