c28fee11d1562f0bf83a66e6b4c12e66fb82fbb9845d9168f7da6c2020ddda4a

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
20/05/2024, 19:32

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General

Target

2024-05-20_5361b9d673bf58dafdf517fc1d97a177_cryptolocker.exe
Size

52KB
MD5

5361b9d673bf58dafdf517fc1d97a177
SHA1

db6519b030c01f29aa78538b35df60e62814f5c9
SHA256

c28fee11d1562f0bf83a66e6b4c12e66fb82fbb9845d9168f7da6c2020ddda4a
SHA512

0e1848d774583b98e43989071021db705feb28fb95289e13868748e33632498ed3fdbe45ff1834e3061960c6b320e1f5b7192c5acaa24d27aaa7931800756290
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAI49w:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012671-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012671-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
840	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1800	2024-05-20_5361b9d673bf58dafdf517fc1d97a177_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
1800	2024-05-20_5361b9d673bf58dafdf517fc1d97a177_cryptolocker.exe
840	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 840	1800	2024-05-20_5361b9d673bf58dafdf517fc1d97a177_cryptolocker.exe	28
PID 1800 wrote to memory of 840	1800	2024-05-20_5361b9d673bf58dafdf517fc1d97a177_cryptolocker.exe	28
PID 1800 wrote to memory of 840	1800	2024-05-20_5361b9d673bf58dafdf517fc1d97a177_cryptolocker.exe	28
PID 1800 wrote to memory of 840	1800	2024-05-20_5361b9d673bf58dafdf517fc1d97a177_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-20_5361b9d673bf58dafdf517fc1d97a177_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_5361b9d673bf58dafdf517fc1d97a177_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1800
- 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:840

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
52KB

MD5
ed8c7cfa75cbb9ea860ba32ed9b23675

SHA1
17d8c11f9fed38f60595de2bc6d2b61b24cf5152

SHA256
6e17ff9973ffe4d6428789b2a48e8abeeffc4c78e3f3c0406967b2d1017e5853

SHA512
8f069182ce63bd9a7d7a76edee6eafe9e99c88c5f1d36c44aa32e6c8c8ab6f911cdf0b4dfeb233faf959979c8580189b91e1b49897bc024810fe8b19553dc0f1

Download Submit
memory/840-23-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1800-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1800-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1800-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download