2866519de8acbee0b2448020376e92835f081af0ff0da9bebfe4dbb6800bde55

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
23-01-2024 00:24

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General

Target

2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe
Size

31KB
MD5

35f793b5b94c775ebe787f1f01b775b9
SHA1

23f9436495fda723ec0fe29dea37877b1596abd5
SHA256

2866519de8acbee0b2448020376e92835f081af0ff0da9bebfe4dbb6800bde55
SHA512

7b058d0052b757b7d446d998f0f4ef85867f1c22ab94d9f2f80ff881d806f225607fd3ecb13be54751cfd7f4f218c7f59384d767668c7ebfa97a53808870169e
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9R9U1gpPQJ:b7o/2n1TCraU6GD1a4Xt9R21TJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022480-12.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	2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
344	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 912 wrote to memory of 344	912	2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe	88
PID 912 wrote to memory of 344	912	2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe	88
PID 912 wrote to memory of 344	912	2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_35f793b5b94c775ebe787f1f01b775b9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:912
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:344

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
31KB

MD5
b1cc818ae6d837598cc7a843782f94c2

SHA1
29cf1c548d928e702187c8c75883601b51137012

SHA256
b76ca9e5558136f0c397c0f20cbc4c63d9646f161a03d86c1eaba8b4ae2a5e1e

SHA512
fbe75a23c79b26b7014b363f29fff5425aaa6fe2fa64abfd65e25d6a808f5f5b254cec97358ebe389d15c934f274eb4c1e602deec8f360f7652541e1a71acad6

Download Submit
memory/344-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/912-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/912-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/912-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download