e7b21d35298a34a0fa2e06769f490e216b2502c059f1324a1872d98220e5a021

Analysis

max time kernel
148s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 16:23

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General

Target

2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe
Size

33KB
MD5

0f96ca6fb39f343bb4873e9cb8f268b9
SHA1

345f40d96d752d531f5cd9e1b0e74b8677f6e54a
SHA256

e7b21d35298a34a0fa2e06769f490e216b2502c059f1324a1872d98220e5a021
SHA512

fdd20bb5781ecc55b024fd6f101744762c3b5147d1bb546f276ae31eecadbed2ed115e843d97d514b5f138b810c83eb4a69db24e6aa8e76205e155967b5b363e
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3S+:b7o/2n1TCraU6GD1a4Xt9bRU7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023108-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2264	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 4488 wrote to memory of 2264	4488	2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe	84
PID 4488 wrote to memory of 2264	4488	2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe	84
PID 4488 wrote to memory of 2264	4488	2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_0f96ca6fb39f343bb4873e9cb8f268b9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4488
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2264

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
33KB

MD5
b298cdf8d8174bdb8b5e640a60a351ba

SHA1
1b32f08d4331873f071a75272230ba353013f09f

SHA256
ee8ef9e640b0d95c55af635fa2bf0fa63a5fb50883115d541ed998a6f443004f

SHA512
abab569695c5090bc30dae3172d44e262de8faaa7a43bf2bf07d2b2e7caca769c3134e85d6d1f46410c19642151a5a2eb96a4de32eabce77b251821355352f7e

Download Submit
memory/2264-20-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4488-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4488-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4488-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download