bbe6d462931497a332f4ace370dd7dcea69a1cb5f567bbfde921641fe65b61d4

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 04:25

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General

Target

2024-06-04_084e6428aa8845d305a29e1af8210e69_cryptolocker.exe
Size

43KB
MD5

084e6428aa8845d305a29e1af8210e69
SHA1

5326a9e1028a79752162a6090fd51e736905670c
SHA256

bbe6d462931497a332f4ace370dd7dcea69a1cb5f567bbfde921641fe65b61d4
SHA512

0e0ed6315c1a1ee80c9aac4d098aaa8d3092184110cd6af121da04cf50797a36b1ff2bc55e0a66f574b8290187644f404afdba3854b37c43f61df09a836d360f
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlmoHR8uypR1x:b/yC4GyNM01GuQMNXw2PSjHPbSuYlZQD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023298-12.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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-06-04_084e6428aa8845d305a29e1af8210e69_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4924	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 3652 wrote to memory of 4924	3652	2024-06-04_084e6428aa8845d305a29e1af8210e69_cryptolocker.exe	83
PID 3652 wrote to memory of 4924	3652	2024-06-04_084e6428aa8845d305a29e1af8210e69_cryptolocker.exe	83
PID 3652 wrote to memory of 4924	3652	2024-06-04_084e6428aa8845d305a29e1af8210e69_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-04_084e6428aa8845d305a29e1af8210e69_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_084e6428aa8845d305a29e1af8210e69_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4924

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
43KB

MD5
f8e02e845df36f3d0f8271df0b73f578

SHA1
51b4b695801248c12796534b5fe51549e0485a0f

SHA256
f7241c6e8e97fbbc26debcdfca95b1e6c0d34b958cac7ad29ad00345013548fc

SHA512
a2da79bdc1a79448ad1b9af48817123f05d62b0d5e63bc6c7163bf323fef5088685fd082caa53cb8b79ef7276daf73ff0909af3fbdf6227975c377af5a8e8843

Download Submit
memory/3652-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3652-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3652-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download