b7b5de472a3b9dc76b9d9e42328ccdf711ae6565041b49043c5b587a60176426

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25/01/2024, 20:26

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General

Target

2024-01-25_749377e7b360020ab1d18545dc09ce34_cryptolocker.exe
Size

43KB
MD5

749377e7b360020ab1d18545dc09ce34
SHA1

45fef05e32a6d9f3d3d4496c0449bd47cf4f836f
SHA256

b7b5de472a3b9dc76b9d9e42328ccdf711ae6565041b49043c5b587a60176426
SHA512

8e3eb84b94a80ca911177b62fac6cbee368d7079de722c5175d2b931a44af547b9236a23608b8bba8b7c8d79b712ac494e3d3ee8f471c7d698d280b770e8303e
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqmz4kmmIs:bc/y2lkF0+BjjIIs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001225a-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2472	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2068	2024-01-25_749377e7b360020ab1d18545dc09ce34_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
2068	2024-01-25_749377e7b360020ab1d18545dc09ce34_cryptolocker.exe
2472	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2472	2068	2024-01-25_749377e7b360020ab1d18545dc09ce34_cryptolocker.exe	28
PID 2068 wrote to memory of 2472	2068	2024-01-25_749377e7b360020ab1d18545dc09ce34_cryptolocker.exe	28
PID 2068 wrote to memory of 2472	2068	2024-01-25_749377e7b360020ab1d18545dc09ce34_cryptolocker.exe	28
PID 2068 wrote to memory of 2472	2068	2024-01-25_749377e7b360020ab1d18545dc09ce34_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-25_749377e7b360020ab1d18545dc09ce34_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_749377e7b360020ab1d18545dc09ce34_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2068
- 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:2472

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
5da1fb0d446390a6dfd7391cea17e15d

SHA1
93cbd4bbfc2cad6b22f8910ec0ad5c219916305e

SHA256
21418c9353ed4a8aa6f4f4015008fb62df9f282bacf7a87201f1707728b2b5d8

SHA512
4105c39c5cbed08974961ce4e06c7195690e0d4dfb135fbc53fae7d848f2a93e71b66ded30fa5b9a450832d54e8576b2eda7cafc51c7f8388917e5552cc915dc

Download Submit
memory/2068-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2068-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2068-2-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2472-18-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download