3fac74cd7a7965caa8c87697f7b6b709eaacaa80cef36268dfc2ec5a250b3fab

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11-05-2024 14:18

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General

Target

2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe
Size

54KB
MD5

facfee175982b9a66be8ca21c3d86351
SHA1

9af550fc9463af1f30778df603d630409aea1103
SHA256

3fac74cd7a7965caa8c87697f7b6b709eaacaa80cef36268dfc2ec5a250b3fab
SHA512

2dc7e698bd17647ba4c6f76acd67c253a4320d103b8109867ba2fb8374072b19067512020bacb9df00b5ac2fc5c0f9db4d593afd2672660ef35633f23167a43e
SSDEEP

768:b7o/2n1TCraU6GD1a4Xcn62tH/1/Lp17zJIfeVEuUr6s:bc/y2lm6iH/NLp17zrV9G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233d3-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
208	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 1812 wrote to memory of 208	1812	2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe	81
PID 1812 wrote to memory of 208	1812	2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe	81
PID 1812 wrote to memory of 208	1812	2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:208

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
54KB

MD5
bd9724190f45be230655212b3cc1541b

SHA1
fdc2a613b2996901caf08ab062089316306435a7

SHA256
dc18f16695d5adb7a9ad5530a9141560085b39492ccc5a25e52fb44c7bcba1bc

SHA512
09ef49d3a8f5835aa092030f43a08767f51181d148ad59a75a63cea5d97279c46b79e6aaa173dcd92a7182efa53dcefec95dc39de14d644fe7dda80b1d5a8948

Download Submit
memory/208-25-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/1812-0-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/1812-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1812-8-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download