7fdded5438b55b16e110a67bf888f786ab65f60e275fbd02d0bfc532b4141bb6

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
17-05-2024 00:02

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-16_6625a57769aa6bd214fa6a2151997503_cryptolocker.exe
Size

33KB
MD5

6625a57769aa6bd214fa6a2151997503
SHA1

29f9e4760f182ab3d24abdd07bea7057182f56f7
SHA256

7fdded5438b55b16e110a67bf888f786ab65f60e275fbd02d0bfc532b4141bb6
SHA512

3eed9aed0cb202141299ecaad5adaa209268c9e52b1537924970fb0f6e12ed87111fa5d7e097a951cf9282f5f8e1ac42dd1d38d8282a02e89af25f165575a6a9
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsg5:b/yC4GyNM01GuQMNXw2PSjSKkcJ5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000016a29-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3060	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1884	2024-05-16_6625a57769aa6bd214fa6a2151997503_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1884	2024-05-16_6625a57769aa6bd214fa6a2151997503_cryptolocker.exe
3060	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 3060	1884	2024-05-16_6625a57769aa6bd214fa6a2151997503_cryptolocker.exe	28
PID 1884 wrote to memory of 3060	1884	2024-05-16_6625a57769aa6bd214fa6a2151997503_cryptolocker.exe	28
PID 1884 wrote to memory of 3060	1884	2024-05-16_6625a57769aa6bd214fa6a2151997503_cryptolocker.exe	28
PID 1884 wrote to memory of 3060	1884	2024-05-16_6625a57769aa6bd214fa6a2151997503_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-16_6625a57769aa6bd214fa6a2151997503_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_6625a57769aa6bd214fa6a2151997503_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1884
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:3060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
33KB

MD5
262b814792c265aa0d756199353419de

SHA1
331b1a9a9e2e9635539c3594406c817c5223be01

SHA256
012c8b24aab19790e4a57dc061830123384f6381f39740f635e6afdff5320a33

SHA512
679231d8cea885577d4e156f2622adaa51ada1398dfdb3cb24b093f175fc4f027dd3235ddc2bd5e1dbfc4ea44f2489280f720bf651ae18913aade492973f5735

Download Submit
memory/1884-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1884-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1884-0-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/3060-23-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download