0c09d285b627be4f637310f7e0d7ad8070d51e30fe22f99f5714cbd152f1755f

Analysis

max time kernel
150s
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
10-03-2024 21:54

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General

Target

2024-03-10_ce0b76678fefc9bbc6b9ffad158ef1e7_cryptolocker.exe
Size

26KB
MD5

ce0b76678fefc9bbc6b9ffad158ef1e7
SHA1

214cee654c696562e229f66f63e278818176d5a0
SHA256

0c09d285b627be4f637310f7e0d7ad8070d51e30fe22f99f5714cbd152f1755f
SHA512

56ae8ea4b3e4afcc73aba53fe471b882fc0d850317895c27d4505c668fa88c0db1090f5205d4bf73b6520059419156b2cf33e1b32a9bf232fc5633f98793f2eb
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznux:b/yC4GyNM01GuQMNXux

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023205-12.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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-10_ce0b76678fefc9bbc6b9ffad158ef1e7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4568	retln.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 3552 wrote to memory of 4568	3552	2024-03-10_ce0b76678fefc9bbc6b9ffad158ef1e7_cryptolocker.exe	89
PID 3552 wrote to memory of 4568	3552	2024-03-10_ce0b76678fefc9bbc6b9ffad158ef1e7_cryptolocker.exe	89
PID 3552 wrote to memory of 4568	3552	2024-03-10_ce0b76678fefc9bbc6b9ffad158ef1e7_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-10_ce0b76678fefc9bbc6b9ffad158ef1e7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_ce0b76678fefc9bbc6b9ffad158ef1e7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3552
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4568

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\retln.exe

Filesize
26KB

MD5
6161234c137a60976328d218dd4de56f

SHA1
e959e8697f8153fcba0c584b0a52cb962ca76ca7

SHA256
93d60e3b5bef3d99be5601b4b199143c2c08f74ce89bb123936a82ec3aef034b

SHA512
b95f6ac0570103a9c532d6394a6bbeca2b5aeadbc7320aab768f7e7c4fccd889f03b7e54270ce58f00daa955826243fa3061bfd012dffb39ffa98064186d1b51

Download Submit
memory/3552-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3552-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3552-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4568-20-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download