39512b133ab32812cb849995c576407b6e1690bdb0fdb2dffa4402e7ae06cbf8

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
27/01/2024, 19:43

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General

Target

2024-01-27_ec81eeb6424b12cc8b3af78707ac8d35_cryptolocker.exe
Size

41KB
MD5

ec81eeb6424b12cc8b3af78707ac8d35
SHA1

a7aa425a07855152de5e90e9180ddf83144df08b
SHA256

39512b133ab32812cb849995c576407b6e1690bdb0fdb2dffa4402e7ae06cbf8
SHA512

a985afa894cb3d5dee218322168a7623ee5616214604e034128a35ece7bd8619c3cbee04e22c8dc619b307eb0dc52e398eb58ba1b8b3321d43cf073e7bceef86
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMpheP:bc/y2lkF0+BeG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224d-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2672	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
3048	2024-01-27_ec81eeb6424b12cc8b3af78707ac8d35_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
3048	2024-01-27_ec81eeb6424b12cc8b3af78707ac8d35_cryptolocker.exe
2672	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2672	3048	2024-01-27_ec81eeb6424b12cc8b3af78707ac8d35_cryptolocker.exe	28
PID 3048 wrote to memory of 2672	3048	2024-01-27_ec81eeb6424b12cc8b3af78707ac8d35_cryptolocker.exe	28
PID 3048 wrote to memory of 2672	3048	2024-01-27_ec81eeb6424b12cc8b3af78707ac8d35_cryptolocker.exe	28
PID 3048 wrote to memory of 2672	3048	2024-01-27_ec81eeb6424b12cc8b3af78707ac8d35_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-27_ec81eeb6424b12cc8b3af78707ac8d35_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_ec81eeb6424b12cc8b3af78707ac8d35_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3048
- 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:2672

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
41KB

MD5
06ce6f92b86e6e065a13a214980749ef

SHA1
81fdea15ace6313c056540e338aeedb97a7d8f02

SHA256
54cc477602dc5653d6b4d9815835b4b475fd05657dd69ee50d9fd4e1bf8a802b

SHA512
7c1ace51c4935dc7e331b590e5f147cad165942e10ff82c591dc84566c6d2dc7da3afd568bb918af9ec5cd012722dc4720d619863e66c657a14ffb862992d106

Download Submit
memory/2672-23-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/3048-0-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/3048-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/3048-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download