4fdc305b4a76b126f1b0d32cbf907fee5973d526050f5566c40093a3d3d42687

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
30-05-2024 04:24

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General

Target

2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe
Size

54KB
MD5

c9785158b5686dd7db6c5f5f07d41978
SHA1

34d3b3997eaac6ea87ee22f10e8cb33766c764f2
SHA256

4fdc305b4a76b126f1b0d32cbf907fee5973d526050f5566c40093a3d3d42687
SHA512

0707bff0f5b6d62bafd0eec3d69b884c3a75404f862ae1ec67c69a57ac92ae696a2398b2c89b33a7ccb8464e58aabf69008e70a97b48d6dffd033add437c2a2f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIX6Ei:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7n

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001226b-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001226b-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1724	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2052	2024-05-30_c9785158b5686dd7db6c5f5f07d41978_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
2052	2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe
1724	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2052 wrote to memory of 1724	2052	2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe	28
PID 2052 wrote to memory of 1724	2052	2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe	28
PID 2052 wrote to memory of 1724	2052	2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe	28
PID 2052 wrote to memory of 1724	2052	2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2052
- 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:1724

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
55KB

MD5
c3de96c606fc6de53a49bcaaf24f50b5

SHA1
124adf55963d3282bd2fde404f419c345013d0b7

SHA256
0fbd638a7670c754a46be1695ce81aed7cd6ecbfb3f2502c7408b4389ead6591

SHA512
82df3bbe8ec3db8599980b9f7730a279f680b04b2153757bcdea97a4f49e20a8b44f3a0f72dd2e08a8de164ed771ae419f3a6937d3dc8511f836c696921f4c44

Download Submit
memory/1724-23-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2052-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2052-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2052-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download