a59d4c667b761ad27a4131cbcc6855cac4d789f92042ed4fb8948ac60ef9ae28

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
28-01-2024 03:22

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General

Target

2024-01-28_0011a2471994e0a674e2400dbbcc73f5_cryptolocker.exe
Size

43KB
MD5

0011a2471994e0a674e2400dbbcc73f5
SHA1

f69d56770d3a9e0ddfbab54267ca5908ee7a399b
SHA256

a59d4c667b761ad27a4131cbcc6855cac4d789f92042ed4fb8948ac60ef9ae28
SHA512

794fa41d1665cb8cc49a8a313e40dc07c74c1bd1b4611a79af184e2a39164da10fd3f841529cc20bbcb14ba7269999e10fa60bc73c890de8bab1541074a2c2ab
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxu:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000015f01-13.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000015f01-13.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2160	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	2024-01-28_0011a2471994e0a674e2400dbbcc73f5_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
1736	2024-01-28_0011a2471994e0a674e2400dbbcc73f5_cryptolocker.exe
2160	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2160	1736	2024-01-28_0011a2471994e0a674e2400dbbcc73f5_cryptolocker.exe	18
PID 1736 wrote to memory of 2160	1736	2024-01-28_0011a2471994e0a674e2400dbbcc73f5_cryptolocker.exe	18
PID 1736 wrote to memory of 2160	1736	2024-01-28_0011a2471994e0a674e2400dbbcc73f5_cryptolocker.exe	18
PID 1736 wrote to memory of 2160	1736	2024-01-28_0011a2471994e0a674e2400dbbcc73f5_cryptolocker.exe	18

C:\Users\Admin\AppData\Local\Temp\2024-01-28_0011a2471994e0a674e2400dbbcc73f5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_0011a2471994e0a674e2400dbbcc73f5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1736
- 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:2160

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

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
43KB

MD5
f71fe86b429d8849568179ba3cdb26cf

SHA1
26f60a39e35789830d8ad60704b678c8314f82f1

SHA256
e5c83dff276d2bf99856e2bd298a450401d124577dc9fa927c0d22692d2f63b5

SHA512
71351b7e4aad0b598581605dd64784e88f5f511c5509c4a7127e71d99018e70343367fe873acb6ead9f62c6a834319cd3a5a11e7acfd059344db91b5f7c98813

Download Submit
memory/1736-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1736-8-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1736-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2160-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download