c2b1487ff0cae649a5eb3fc0c0fafc9a8188ca0de838e045cebd81b90637ed7f

Analysis

max time kernel
148s
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
06/03/2024, 05:45

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General

Target

2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe
Size

42KB
MD5

425b94b806b9d7c8cf51996942cd664f
SHA1

fccc120ed590521bdfd4cc9723a02c1ac724bbc0
SHA256

c2b1487ff0cae649a5eb3fc0c0fafc9a8188ca0de838e045cebd81b90637ed7f
SHA512

438b9b0deeeaedc5636c536a9a4b90eb92451fdf3756fc8657a8a67f8774bc2365a97fd702c4ccb656fd949f99010c9c3bd7cd6e1e6f45a9891e206294179341
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphej6J:bc/y2lkF0+Bex

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002327d-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	2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4492	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 4896 wrote to memory of 4492	4896	2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe	97
PID 4896 wrote to memory of 4492	4896	2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe	97
PID 4896 wrote to memory of 4492	4896	2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_425b94b806b9d7c8cf51996942cd664f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4896
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4492

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=4472 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:4592

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
43KB

MD5
3580ee487f626bfca527aeb6c8e0c1a7

SHA1
96c2ce3803c9d4e392f8246c1368ac7b0d3e95e8

SHA256
a59474c638947c05f23d546f6725b6db8fee8b31083161fa52d0b67fe189fbe8

SHA512
06e1c38d15291df780ef8c0cebc0eae0001b9e095be239491c5bbddab4433448232d9c4b37111d35e562bb4806cddd293b628239ccd94f15cb58e0c4e1aeb94a

Download Submit
memory/4492-20-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/4896-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4896-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4896-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download