3ca51097ad34532c16b12f3866cc889b4936108ff04287d6f22f918e49d1636b

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 11:49

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe
Size

45KB
MD5

c1a97979e2e8fdfd5c6f703a853bcc15
SHA1

b1701d9724d50b4f10532bad70cc0f9f992b5493
SHA256

3ca51097ad34532c16b12f3866cc889b4936108ff04287d6f22f918e49d1636b
SHA512

da7708bbb9010e3e68be647c7987f760a7712b938a285e772632a101792f112f620286ab3dbab99fdf47130b1ac429b7f50a620985d466998507ba999ee266a4
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxr:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001447e-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001447e-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2552	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1848	2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_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
1848	2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe
2552	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 2552	1848	2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe	28
PID 1848 wrote to memory of 2552	1848	2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe	28
PID 1848 wrote to memory of 2552	1848	2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe	28
PID 1848 wrote to memory of 2552	1848	2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_c1a97979e2e8fdfd5c6f703a853bcc15_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1848
- 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:2552

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

Loading Replay Monitor...

Downloads

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

Filesize
45KB

MD5
ee46e26394fc3807759af248f23fe275

SHA1
aff732ed1079ceeb2a2470851afbc25bcc607112

SHA256
3c99ccfbd9adcb4f19749fb6d2731736b31d4194218457ba90d9391984a04149

SHA512
5e7bf68320720f3368cf71c7d4a1cc1a713d1722e3ad1f58b98f5685c0e77ef35b169bdf15c98fb8b2e5d287f95448fa9923cc91bf1829b7b56ee02867b3cc65

Download Submit
memory/1848-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1848-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1848-8-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2552-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download