497342c3405f476b49a63d8466ae7dcafe8bb316d36d963566bf6cdefeed1030

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 08:43

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General

Target

2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe
Size

32KB
MD5

8a33a713ef97774a54a367aa6e662650
SHA1

751502c495215762ec251fff98261107c10d09bc
SHA256

497342c3405f476b49a63d8466ae7dcafe8bb316d36d963566bf6cdefeed1030
SHA512

04cf2e059710d12b63284dc7136ae3ca736be4bee11a848125a8f3d0d6560e88282a1aaa9ebef693c3c52a428e106ace52e07d829243097031b51b65034b9cd9
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RwFtx:b7o/2n1TCraU6GD1a4Xt9bRwJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002321d-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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4800	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 216 wrote to memory of 4800	216	2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe	84
PID 216 wrote to memory of 4800	216	2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe	84
PID 216 wrote to memory of 4800	216	2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:216
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4800

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
32KB

MD5
b45bb0b9befbfa439a25ba1a109ea1de

SHA1
2154b5ffa6d2bbc105bd44ee32528cf25dd35bfc

SHA256
fe7204b95f0575b1b329f65a73a85359d06f8c6bf1495afa09c75e7643e682a8

SHA512
a9173b2c45977767117196da2a3681d8f08612ae884db159742538883236f697b4421bb82b901db2515c33cea5f3ecb62e4a04fce7d20926aab8d333f998a443

Download Submit
memory/216-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/216-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/216-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4800-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download