25b3b45f1676939bcacfcfd2ca7bdc6d3de0a3f4f0fa74fe709281fda048d025

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/04/2024, 04:44

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General

Target

2024-04-22_7e55d18d8b638bd87fc36982f9ff2862_cryptolocker.exe
Size

36KB
MD5

7e55d18d8b638bd87fc36982f9ff2862
SHA1

09f8e9f7d6c17b97a18381137ce49c1bb5dc6113
SHA256

25b3b45f1676939bcacfcfd2ca7bdc6d3de0a3f4f0fa74fe709281fda048d025
SHA512

9e6a3e932be0f87bb8daa364694e92fb654a84e963049d82683715621c068db837e54f5ab7c2bced0cbeaa77cf254acf73e68e7700e745ae6a4af7a976b0d872
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qE4kb6oY26zT:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36v

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224f-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2640	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2928	2024-04-22_7e55d18d8b638bd87fc36982f9ff2862_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
2928	2024-04-22_7e55d18d8b638bd87fc36982f9ff2862_cryptolocker.exe
2640	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2928 wrote to memory of 2640	2928	2024-04-22_7e55d18d8b638bd87fc36982f9ff2862_cryptolocker.exe	28
PID 2928 wrote to memory of 2640	2928	2024-04-22_7e55d18d8b638bd87fc36982f9ff2862_cryptolocker.exe	28
PID 2928 wrote to memory of 2640	2928	2024-04-22_7e55d18d8b638bd87fc36982f9ff2862_cryptolocker.exe	28
PID 2928 wrote to memory of 2640	2928	2024-04-22_7e55d18d8b638bd87fc36982f9ff2862_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-22_7e55d18d8b638bd87fc36982f9ff2862_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_7e55d18d8b638bd87fc36982f9ff2862_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2928
- 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:2640

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
37KB

MD5
7e4e0d497fb674f7b6b8ee1f5dd3db06

SHA1
124465c5c4f587986954959ed813ee93dee30b7a

SHA256
18422a18d8ae43a9f8b7ec292af7bdd68db01d0d9da3f674a993ea2cad30e5ed

SHA512
9d2db341b97042e6cd4ad2b1f541a23cf2488b17d510e08fb244b56082920150438b95c1168939ecbcdf907f485bf9052fea57eeca6f0f5ef26f3c8365706be1

Download Submit
memory/2640-23-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2928-0-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2928-1-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2928-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download