5ce5268d1e3cc90d6f397fccf6c7379352dd7e81eb9601b3128fe18de535b4de

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06-04-2024 09:48

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General

Target

2024-04-06_a4949f2741364fdd6f1bd4347f1df4bc_cryptolocker.exe
Size

43KB
MD5

a4949f2741364fdd6f1bd4347f1df4bc
SHA1

96d43c4e4ee6963ca7dd0c284f0e9c1cee3a2cae
SHA256

5ce5268d1e3cc90d6f397fccf6c7379352dd7e81eb9601b3128fe18de535b4de
SHA512

377d50c2f7bf3b3f815f0a80c7d6969224b97bdfad3e22bcf6fb4a31d5e126d14ad7c86143e34fe68384258644e189e548364d2234c7ffd1eae563672567e021
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMvcWp8EB0/z:bc/y2lkF0+B2j8C0/z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012248-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2540	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1312	2024-04-06_a4949f2741364fdd6f1bd4347f1df4bc_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
1312	2024-04-06_a4949f2741364fdd6f1bd4347f1df4bc_cryptolocker.exe
2540	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1312 wrote to memory of 2540	1312	2024-04-06_a4949f2741364fdd6f1bd4347f1df4bc_cryptolocker.exe	28
PID 1312 wrote to memory of 2540	1312	2024-04-06_a4949f2741364fdd6f1bd4347f1df4bc_cryptolocker.exe	28
PID 1312 wrote to memory of 2540	1312	2024-04-06_a4949f2741364fdd6f1bd4347f1df4bc_cryptolocker.exe	28
PID 1312 wrote to memory of 2540	1312	2024-04-06_a4949f2741364fdd6f1bd4347f1df4bc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-06_a4949f2741364fdd6f1bd4347f1df4bc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-06_a4949f2741364fdd6f1bd4347f1df4bc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1312
- 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:2540

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
43KB

MD5
cda7e3b0d41b6e14fc0ef30145390f62

SHA1
818fc6d81e886b9fa6b2bc5af04a55cd59917110

SHA256
5d73dfa69bc59ee3b9874316a2d9c7be2c0c2ff59c7d40c541405a6c8269b04f

SHA512
27394c07485a2d8ff11756d598d88a7f4c3285f351a1e5a2f0aa07d302bce1e21c876af347353d4da39f85accf55cc3f76c0e5f6146389f76d3b02c071f6f698

Download Submit
memory/1312-0-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1312-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1312-5-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2540-23-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download