841688d5f79b5ffeba436e04c80cbb7b1377900c79694b7a8ca0a46470377a57

Analysis

max time kernel
118s
max time network
130s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/02/2024, 03:46

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General

Target

2024-02-29_a528fb66cdd6d7ded55d42fc4e75f5ab_cryptolocker.exe
Size

39KB
MD5

a528fb66cdd6d7ded55d42fc4e75f5ab
SHA1

8b49a6e8ea2ba382f0b78adf3bb44c0340868518
SHA256

841688d5f79b5ffeba436e04c80cbb7b1377900c79694b7a8ca0a46470377a57
SHA512

53dc79754d8bbd3bd1037995eb8cda0c2a340abfc53ace8d20f10e8099530147d083ba4b448ebdd665fc81bf340559268553537f745d4cbeff07175ad6aad770
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunrkwIxZN:btB9g/WItCSsAGjX7e9N0hunrknN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001507e-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2616	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2456	2024-02-29_a528fb66cdd6d7ded55d42fc4e75f5ab_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
2456	2024-02-29_a528fb66cdd6d7ded55d42fc4e75f5ab_cryptolocker.exe
2616	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2456 wrote to memory of 2616	2456	2024-02-29_a528fb66cdd6d7ded55d42fc4e75f5ab_cryptolocker.exe	27
PID 2456 wrote to memory of 2616	2456	2024-02-29_a528fb66cdd6d7ded55d42fc4e75f5ab_cryptolocker.exe	27
PID 2456 wrote to memory of 2616	2456	2024-02-29_a528fb66cdd6d7ded55d42fc4e75f5ab_cryptolocker.exe	27
PID 2456 wrote to memory of 2616	2456	2024-02-29_a528fb66cdd6d7ded55d42fc4e75f5ab_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-02-29_a528fb66cdd6d7ded55d42fc4e75f5ab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_a528fb66cdd6d7ded55d42fc4e75f5ab_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2616

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\gewos.exe

Filesize
39KB

MD5
28b8069f9ba718629a9785332c54e67b

SHA1
294a82ff050fe538354716461cc7229061862f99

SHA256
c3613415147486006b6ac4afee39dc6ee16b1a6aa8469ab10c674d1f6995ebb7

SHA512
8cb3667a07832b7370239ac99e681cff158910dce9e5c300ffaccaac6a3ce71e4de150c717d54facd25c61933c9a3d19d398b7c94a87bd6a180be1081e54fdd0

Download Submit
memory/2456-0-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download
memory/2456-2-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download
memory/2456-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2616-18-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download