e4317473aa8174626cbb6523e43b0a91125380239ab34ebe6620f9d5c0f97869

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 05:04

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe
Size

37KB
MD5

870ed3c8f2502512727f4db938461974
SHA1

ac0b54516184b6cfa870979cbace898e84b1d7dd
SHA256

e4317473aa8174626cbb6523e43b0a91125380239ab34ebe6620f9d5c0f97869
SHA512

586f16971078cb099e73eb32b7c6e0251cf8e929034ef108eb5934b760702d0e09cc946e8cd56c23ca871b12d0dac1f13347c5fb24d266ea94baaf5d432c203b
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mri:bc/y2lLRU6zA6qG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d0000000122eb-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2828	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2412	2024-05-21_870ed3c8f2502512727f4db938461974_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
2412	2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe
2828	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 2828	2412	2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe	28
PID 2412 wrote to memory of 2828	2412	2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe	28
PID 2412 wrote to memory of 2828	2412	2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe	28
PID 2412 wrote to memory of 2828	2412	2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_870ed3c8f2502512727f4db938461974_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2828

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

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

Filesize
38KB

MD5
2f5dd1c694a87727a5bb464137ba9d23

SHA1
50985bb7be27eb283aa61587f258c1268295ba21

SHA256
744799267705e31be49ff24857435d231b828afb0b24321e19a1b809a705f577

SHA512
4f9b4480c270d6b00b4eb9ae3ae671f85d40f66a7a6ff374914c007f169ddee7a9b26f9681e0fc92903eb7dc34d07614b043182e41cdf4df9bfddf5ebb88cc34

Download Submit
memory/2412-0-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2412-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2412-8-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2828-23-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download