42056eb8c49d847f5940db553bb88a129d05ddc02ac2174b9d240180315c31fa

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
28/03/2024, 04:47

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General

Target

2024-03-28_994fa312d3401e630bc0731c85176fab_cryptolocker.exe
Size

35KB
MD5

994fa312d3401e630bc0731c85176fab
SHA1

6e5ebacfb5b9c97c28ce287d250330602d08d0d3
SHA256

42056eb8c49d847f5940db553bb88a129d05ddc02ac2174b9d240180315c31fa
SHA512

8a8aed1dfaf244012e7db719e1afae8f17ab89b26ea25052188dd83dda64e8ec3e0d7d3e528acc5767e41a1662c8dc46e820a35d474bbea1036180c95bc6e851
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3q4aKWUn:b7o/2n1TCraU6GD1a4Xt9bRU64hTn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012248-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2640	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1756	2024-03-28_994fa312d3401e630bc0731c85176fab_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
1756	2024-03-28_994fa312d3401e630bc0731c85176fab_cryptolocker.exe
2640	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 2640	1756	2024-03-28_994fa312d3401e630bc0731c85176fab_cryptolocker.exe	28
PID 1756 wrote to memory of 2640	1756	2024-03-28_994fa312d3401e630bc0731c85176fab_cryptolocker.exe	28
PID 1756 wrote to memory of 2640	1756	2024-03-28_994fa312d3401e630bc0731c85176fab_cryptolocker.exe	28
PID 1756 wrote to memory of 2640	1756	2024-03-28_994fa312d3401e630bc0731c85176fab_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_994fa312d3401e630bc0731c85176fab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_994fa312d3401e630bc0731c85176fab_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1756
- 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

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
35KB

MD5
8035888857b0ba59832590b29ddf4804

SHA1
ec6b2c8fb0670e649a44762453583c6825664009

SHA256
462893af6f064b2138803527a3afa9fb5c42023454fd524ab8a832b6b29d7ba8

SHA512
74c779a47d44aff27efc395a30530ce2a57f6152d0283ed062303879f596fb0a97024ed0a5825a01fc722d229bf564cb8a45632202c5a4fce97a1fd369a43cb7

Download Submit
memory/1756-0-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1756-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1756-8-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2640-17-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download