9008fff63b903a078c259352237b88470b54641986db50f944d91302773cd4b2

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 18:01

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General

Target

2024-06-04_5944ce28f2be378c14c9a681429d1205_cryptolocker.exe
Size

34KB
MD5

5944ce28f2be378c14c9a681429d1205
SHA1

57e14b6981a52acc9e7bdde4e8a8fdf551792e82
SHA256

9008fff63b903a078c259352237b88470b54641986db50f944d91302773cd4b2
SHA512

6c779c28811dbd89643e1e2d8673a78dda31ad3a7327365d71f68b146e1a7dcbc13c56b473ed8c77e954c8916b9369f51a202ce5491268ea64e7981dadb4b2b7
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgqDxA:b/yC4GyNM01GuQMNXw2PSjSKkcJeA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233ce-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-06-04_5944ce28f2be378c14c9a681429d1205_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
916	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 3660 wrote to memory of 916	3660	2024-06-04_5944ce28f2be378c14c9a681429d1205_cryptolocker.exe	82
PID 3660 wrote to memory of 916	3660	2024-06-04_5944ce28f2be378c14c9a681429d1205_cryptolocker.exe	82
PID 3660 wrote to memory of 916	3660	2024-06-04_5944ce28f2be378c14c9a681429d1205_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-04_5944ce28f2be378c14c9a681429d1205_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_5944ce28f2be378c14c9a681429d1205_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3660
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:916

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
34KB

MD5
171662a2ec99e79b08af8403852ebc4b

SHA1
4c187ab38f9c9d6e96f98d8c4f255dd6f7df05f8

SHA256
9f8faec52824f3da39f8d076fe95774d9e8a6200100a0777782b46ddd7ae3cc2

SHA512
559908c8ddae27a5a14771ec4775df6490943cd1cae0db3f0fab38a7d6d8dba1b54968e3d8185c2271d0d6e31fa98ecba6356e51cd98067470ee60e2cb65d739

Download Submit
memory/916-21-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/3660-0-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/3660-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3660-8-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download