743b95391604ece4eb58acbce54432d159272149457493e53e351cedeadc358d

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
02/05/2024, 02:26

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General

Target

2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe
Size

44KB
MD5

39c684f4f09f512f4fa3efb9e223238b
SHA1

dd5d30076022acff1ce1ecc0771b49ad7ca470dc
SHA256

743b95391604ece4eb58acbce54432d159272149457493e53e351cedeadc358d
SHA512

60c9f75c19c6b269e0d35d686e3a4f5832aa1d99eb7bbdccdc167a2397daac3bed0fa8e55ce15523f0d0ec2f98bff06ece5eac5e0716c563d0f88cf1e267198b
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxK:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001211e-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001211e-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2832	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	2024-05-02_39c684f4f09f512f4fa3efb9e223238b_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	2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe
2832	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2832	2220	2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe	28
PID 2220 wrote to memory of 2832	2220	2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe	28
PID 2220 wrote to memory of 2832	2220	2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe	28
PID 2220 wrote to memory of 2832	2220	2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-02_39c684f4f09f512f4fa3efb9e223238b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_39c684f4f09f512f4fa3efb9e223238b_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:2832

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
44KB

MD5
b0bd50430677b1df48ea927ddd617f92

SHA1
aaf598715067357cd130353804cd4e8f999c3a9c

SHA256
75a6f4717a682d4bc9ad07d28f862b03043b896eff23b25a382ac14c66b9ef56

SHA512
a17429ccc7993e74d6b4a3454f8bc9eb5b065ec8409a8bb048a07c944a742c532d3c24f8e8990f1ef47778b425abf955077c492ea5781b34b45b1480f43a069e

Download Submit
memory/2220-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

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

Filesize
24KB

Download
memory/2220-8-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2832-23-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download