293e6bcf5cc5b6fd823c6b19add8afe6c8cc5667ee0af3dadf44a8402db87e58

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 01:29

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General

Target

2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe
Size

31KB
MD5

3e4484ff7ae9201d33b4db6767db8832
SHA1

2ce091b1254e7e477a59125905e59021d5d36673
SHA256

293e6bcf5cc5b6fd823c6b19add8afe6c8cc5667ee0af3dadf44a8402db87e58
SHA512

acb995a6d752262fff2ecb21ff79cc4581e66fc4dac3e150fdd0a0120e110591c241996f612a3e393f223af8f25aba9b06f5795b80ff67877c69bb9217d4fcc2
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+U8Ss87vh3:b/yC4GyNM01GuQMNXum+NSn3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1592	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 228 wrote to memory of 1592	228	2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe	83
PID 228 wrote to memory of 1592	228	2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe	83
PID 228 wrote to memory of 1592	228	2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e4484ff7ae9201d33b4db6767db8832_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:228
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:1592

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
31KB

MD5
e46cc3d1dabb4928b2abcf056fc41b6f

SHA1
be3cbcaa5c3d1019ab1801f789f3f23d20067c40

SHA256
58d6dda9aa697d05e4a337d98cf72818fd95b846bef15f4a7985495de483cecc

SHA512
f772df1ac9623a0406dab9532721d74afc0b9d97df37dd5c4578e58237cfb55f261f32dfe7d4d4bf559e299d8c4889b2339ea6171c3495f42516c7135aa13e0c

Download Submit
memory/228-0-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/228-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/228-8-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/1592-25-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download