2285b38070b166c1e6bb2d1568ff12d21eaf76a2058079a0a396682e00b1f492

Analysis

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

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
13/05/2024, 19:45

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General

Target

2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe
Size

30KB
MD5

b4620b96c583abe876fa7022f48a6407
SHA1

477a558b33d6ab253ef323bf68b1c8ebf605a973
SHA256

2285b38070b166c1e6bb2d1568ff12d21eaf76a2058079a0a396682e00b1f492
SHA512

49b8eca645fe49a623566bc766fd00bd40f49488980352e352c88ed5f46ce9ada32049530e32c75ccc20571f535d1f2cba3d61b3934515821cbc7ba9a4a6a039
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNfl:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012286-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012286-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1260	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
616	2024-05-13_b4620b96c583abe876fa7022f48a6407_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
616	2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe
1260	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 616 wrote to memory of 1260	616	2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe	28
PID 616 wrote to memory of 1260	616	2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe	28
PID 616 wrote to memory of 1260	616	2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe	28
PID 616 wrote to memory of 1260	616	2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:616
- 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:1260

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
30KB

MD5
3a63cde74cd9aa7c0ad94179965c00ea

SHA1
dec7538534decaaa6c38a4076155d8c4d6ff7047

SHA256
805fefad82311865f6d3907e571ba7d723431cc93fbe2467247a63680af65c59

SHA512
924ca0d2c5c68ef38475d3ddd50b129419e8c308c2523174199ef7fb1cea8f94224aae4d376abff717e6497eecb4191e34becafcfd635fe0680b89b9e2785248

Download Submit
memory/616-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/616-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/616-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1260-23-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download