0b11338133dd0bc30c0321fd23c1b14ee0be1a3545c9ee34f4cb0d4e5b630823

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 04:31

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General

Target

2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe
Size

34KB
MD5

7343af327b69b44eac48611953408882
SHA1

7e97b0d724f573338fef7b7f118f8e2bde56b10a
SHA256

0b11338133dd0bc30c0321fd23c1b14ee0be1a3545c9ee34f4cb0d4e5b630823
SHA512

7a31bdc021f1a0e50a7b5a17a8a30a8e64b6a24d73d545bbb0f6a59be28b75790655cb3835a4995d0c539e48ec9cbd76f1dc2a62cb46e2c49c1d79050da14297
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsguM:b/yC4GyNM01GuQMNXw2PSjSKkcJn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023278-12.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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4524	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 2548 wrote to memory of 4524	2548	2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe	83
PID 2548 wrote to memory of 4524	2548	2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe	83
PID 2548 wrote to memory of 4524	2548	2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4524

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
b7ae3c7e300b1a03a4c7bf45ed901d8f

SHA1
a6ffcb2ff9f747f3abf0e6f27375e012a7a57d3c

SHA256
91e3b05e06337877dd0c0832a1589b713478a7b26ef1b48b09c055b01be4cafd

SHA512
3afee6921ec6746d7cf59355552df75b1edaf92627202f7eac02354a9075e2aa57c0a29ba00beafa57980c7059a6a5f911269c5df1cde57a9cc55df741c07805

Download Submit
memory/2548-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2548-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2548-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4524-25-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download