9b50def5a4ffe4a8b1de0b1e6f548b5fcfcff6f80940c7fe7aa32950927b862d

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 09:59

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General

Target

2024-05-29_fca104331846ed43d4a8b36173358264_cryptolocker.exe
Size

38KB
MD5

fca104331846ed43d4a8b36173358264
SHA1

18a2b95b85cf8c57da95006e4b2b1bcb428a5413
SHA256

9b50def5a4ffe4a8b1de0b1e6f548b5fcfcff6f80940c7fe7aa32950927b862d
SHA512

affe9f89352698ee87b0a9988674be0debf9c21c0daec317b0fe5c604a366a76416b2f18825354146ecf313e325b48dac032bb639167218ecf2bd90144249d0a
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3V6uVjhbuU/H:b7o/2n1TCraU6GD1a4Xt9bRUlV5hbb/H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000155f6-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2052	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2304	2024-05-29_fca104331846ed43d4a8b36173358264_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
2304	2024-05-29_fca104331846ed43d4a8b36173358264_cryptolocker.exe
2052	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 2052	2304	2024-05-29_fca104331846ed43d4a8b36173358264_cryptolocker.exe	28
PID 2304 wrote to memory of 2052	2304	2024-05-29_fca104331846ed43d4a8b36173358264_cryptolocker.exe	28
PID 2304 wrote to memory of 2052	2304	2024-05-29_fca104331846ed43d4a8b36173358264_cryptolocker.exe	28
PID 2304 wrote to memory of 2052	2304	2024-05-29_fca104331846ed43d4a8b36173358264_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_fca104331846ed43d4a8b36173358264_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_fca104331846ed43d4a8b36173358264_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2304
- 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:2052

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\rewok.exe

Filesize
38KB

MD5
fa054d435c8c25a61676a56760e49606

SHA1
85aa0949d4c15c4d525bb21965a72b81c524fc86

SHA256
3049e7dcfe55d26085a67d79cf947e5a436a929a2ea21d18c6afefd456234f47

SHA512
712d9e9a36b23188b98a17ac4d8da774aa0ed9aea860a009bdede94dc954d589b71bbe19707f91b46ce5870ccb797438c626c01ebdf00ec0cb6bb810242b2908

Download Submit
memory/2052-16-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2304-0-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2304-8-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2304-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download