33743ebaf50fc6aed826fac05a48d8a5f61701c73e40cb6104b45235e56f10b0

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/04/2024, 04:31

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General

Target

2024-04-25_3b05b83bad2ea449253c73fc6f96d0d2_cryptolocker.exe
Size

42KB
MD5

3b05b83bad2ea449253c73fc6f96d0d2
SHA1

260b3ffbc4a527215dd4eeb42284c6097989e01d
SHA256

33743ebaf50fc6aed826fac05a48d8a5f61701c73e40cb6104b45235e56f10b0
SHA512

5e41eca41835e59b2491079fe65a163489146abc4d928744fc9008953d9b155636e0a66715e127c8c112ff19aa81688dc1e34d2e9d78e8f02daa5da4b6114ba0
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlmoHR8uye/:b/yC4GyNM01GuQMNXw2PSjHPbSuYlZL/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012256-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3052	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2208	2024-04-25_3b05b83bad2ea449253c73fc6f96d0d2_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
2208	2024-04-25_3b05b83bad2ea449253c73fc6f96d0d2_cryptolocker.exe
3052	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 3052	2208	2024-04-25_3b05b83bad2ea449253c73fc6f96d0d2_cryptolocker.exe	28
PID 2208 wrote to memory of 3052	2208	2024-04-25_3b05b83bad2ea449253c73fc6f96d0d2_cryptolocker.exe	28
PID 2208 wrote to memory of 3052	2208	2024-04-25_3b05b83bad2ea449253c73fc6f96d0d2_cryptolocker.exe	28
PID 2208 wrote to memory of 3052	2208	2024-04-25_3b05b83bad2ea449253c73fc6f96d0d2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-25_3b05b83bad2ea449253c73fc6f96d0d2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_3b05b83bad2ea449253c73fc6f96d0d2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2208
- 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:3052

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

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Downloads

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

Filesize
42KB

MD5
c3e9f910712dffc03177ee543f13af6e

SHA1
8e8cc8954c6988d4dc24221b136dda1f731ed6c9

SHA256
56f5ccd7b3d30af0518fc13a6696bac3bb9d623ab40349a627258e75af918d2a

SHA512
b4ea554c7469355895ba5e9a5382230be856d4283f51370a216b3b3b4d2131ad24f8179b9fceff7b5a69553823cc17b27c5125d44b7aa5b78e0b43aed365127a

Download Submit
memory/2208-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2208-2-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2208-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3052-20-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download