b20e8d7afe7451cfa5c87c19858f0c19b202afba5c6bffa863d22056e7f76bd1

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
05/04/2024, 15:51

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General

Target

2024-04-05_d11a96bc8c8a637c556734172d8556a5_cryptolocker.exe
Size

64KB
MD5

d11a96bc8c8a637c556734172d8556a5
SHA1

8a4186720247748abeb71b002cb8fa109506bca8
SHA256

b20e8d7afe7451cfa5c87c19858f0c19b202afba5c6bffa863d22056e7f76bd1
SHA512

5edd1e0c6ce287e7e7b3f2a3c20408f5dd346591929aedd04e1460b4d9d1f50e8c5d3695be36b6e1666c68e6920040c8ed6bb2a9208d508e359f5d3c01b988ff
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299do:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7W

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001231c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001231c-12.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2644	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2364	2024-04-05_d11a96bc8c8a637c556734172d8556a5_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
2364	2024-04-05_d11a96bc8c8a637c556734172d8556a5_cryptolocker.exe
2644	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2644	2364	2024-04-05_d11a96bc8c8a637c556734172d8556a5_cryptolocker.exe	28
PID 2364 wrote to memory of 2644	2364	2024-04-05_d11a96bc8c8a637c556734172d8556a5_cryptolocker.exe	28
PID 2364 wrote to memory of 2644	2364	2024-04-05_d11a96bc8c8a637c556734172d8556a5_cryptolocker.exe	28
PID 2364 wrote to memory of 2644	2364	2024-04-05_d11a96bc8c8a637c556734172d8556a5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_d11a96bc8c8a637c556734172d8556a5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_d11a96bc8c8a637c556734172d8556a5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2364
- 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:2644

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
64KB

MD5
7c4221cacf6ceff069f07a9263cabf71

SHA1
ee1bbdbc26a9c37ef1c8d2dcf8930e9725265343

SHA256
96c11c72ebdfe75a7d752a44d35ed03db6a580173ea9d57fea715fd5864bb418

SHA512
72b625d84819ead718b3eb8afc13fbb213aad310ac45ad35f244387759a25c574ad302702696ba2beba5bd75437452f322ab6f579fcca3adab5b8773671f1041

Download Submit
memory/2364-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2364-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2364-4-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2644-23-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download