3baffc3a2e84bb92ff02f231050020c75649c95e18b39865de373eb1fca63c73

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 21:36

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General

Target

2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe
Size

31KB
MD5

a86c0678d04e470fbc25702d9a6c3d9b
SHA1

85494c009af8de658c0d0c4f6fb0d36b1590a429
SHA256

3baffc3a2e84bb92ff02f231050020c75649c95e18b39865de373eb1fca63c73
SHA512

693c81a80b90437dcefb9de8e683c3f6ea37421b4048854068b5106ec69e298e571ea8793073c3dca2f96621b3cdad58521289a26805bb3f3ac1334f01299a7f
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNf3:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001315b-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001315b-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2520	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_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
2220	2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe
2520	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2520	2220	2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe	28
PID 2220 wrote to memory of 2520	2220	2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe	28
PID 2220 wrote to memory of 2520	2220	2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe	28
PID 2220 wrote to memory of 2520	2220	2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_a86c0678d04e470fbc25702d9a6c3d9b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2520

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\hurok.exe

Filesize
31KB

MD5
dc7b829c4e78bbbc58a7cd256c2cff4e

SHA1
df0756abea19d47f31b6eaea6935d9c9eb54d41f

SHA256
c77fa24186399c38bc94d1db0ab492bdcf46afd30461f15361c6f48a3c3eb992

SHA512
361078fd8f0b8e1eb87369dd798d5f30d5938b417fc95115891321899ee94862dc7f505d2419d0474a7d8f85f22dda66699607d7e30892e05418b5522cbf4eaf

Download Submit
memory/2220-0-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2220-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2220-8-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2520-16-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download