abc43a6bd6d1d0bb167bb8c7fed7849658a41ce034382fb4f77b366506507736

Analysis

max time kernel
147s
max time network
153s
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, 03:58

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General

Target

2024-04-26_a14df5f9701aef56ed47246ecc3736a2_cryptolocker.exe
Size

37KB
MD5

a14df5f9701aef56ed47246ecc3736a2
SHA1

b377b6f64639d8dca5a05daa87d51a85880809aa
SHA256

abc43a6bd6d1d0bb167bb8c7fed7849658a41ce034382fb4f77b366506507736
SHA512

49d33c17c4d2f142822c5570e6530fe5a32eb857a5f79c1cebe2721e40eb625de18cd9bc908aa20c9608a239b1ee89d5d3168cef57b2005b77a407e1b89dd386
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mc:bc/y2lLRU6zA6qc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002324a-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_a14df5f9701aef56ed47246ecc3736a2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5112	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 4484 wrote to memory of 5112	4484	2024-04-26_a14df5f9701aef56ed47246ecc3736a2_cryptolocker.exe	91
PID 4484 wrote to memory of 5112	4484	2024-04-26_a14df5f9701aef56ed47246ecc3736a2_cryptolocker.exe	91
PID 4484 wrote to memory of 5112	4484	2024-04-26_a14df5f9701aef56ed47246ecc3736a2_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-26_a14df5f9701aef56ed47246ecc3736a2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_a14df5f9701aef56ed47246ecc3736a2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4484
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:5112

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=3756 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
1⤵
PID:936

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
e901d8a3c3e8ef51f2d1103ecdf4d641

SHA1
6d9347391acd7a1e3e37ec12d5860fdbe45dee1e

SHA256
f5ba8b9f1e9904f3614c29df76cc76363c531d5855d69d64857447dfef153d33

SHA512
76ea2f4beb0593101458348d6db6caba8822229587f398d9dac61b6cbbbf267668e00207e56dbb6efb70605f05f90aee9284884d8558491572b8cc60dcb1fb53

Download Submit
memory/4484-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4484-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4484-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5112-19-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download