09d6dc2d5881ccdbb1cb40919b34eaebf6a455575773950db9b0fac4e5fe8624

Analysis

max time kernel
147s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23/04/2024, 22:26

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General

Target

2024-04-23_38657a303715095845230c0cb61813c3_cryptolocker.exe
Size

43KB
MD5

38657a303715095845230c0cb61813c3
SHA1

ca2f7d209297de2c34ba3b80b69168cbaec56584
SHA256

09d6dc2d5881ccdbb1cb40919b34eaebf6a455575773950db9b0fac4e5fe8624
SHA512

1bdb945b9126a4dbf969784473a8414ead0593422792d0ff554b12706c31909c1e8e7bd663bafdf013c84e3feaeaf15b0e8a9306890aeb05956af8c126d00f99
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxf:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001223d-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001223d-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2820	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1412	2024-04-23_38657a303715095845230c0cb61813c3_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
1412	2024-04-23_38657a303715095845230c0cb61813c3_cryptolocker.exe
2820	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1412 wrote to memory of 2820	1412	2024-04-23_38657a303715095845230c0cb61813c3_cryptolocker.exe	28
PID 1412 wrote to memory of 2820	1412	2024-04-23_38657a303715095845230c0cb61813c3_cryptolocker.exe	28
PID 1412 wrote to memory of 2820	1412	2024-04-23_38657a303715095845230c0cb61813c3_cryptolocker.exe	28
PID 1412 wrote to memory of 2820	1412	2024-04-23_38657a303715095845230c0cb61813c3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-23_38657a303715095845230c0cb61813c3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_38657a303715095845230c0cb61813c3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1412
- 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:2820

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
43KB

MD5
5dba39bc9db0a935474f5907e68569bb

SHA1
3f1b816d613bc37610e984b8068e71863f92128b

SHA256
b26498d1bc0d4482eec1ac646ef0f073781030ece46c21b2c5a86214dba8c736

SHA512
12bfa3244c38e1a6bbdb911b454116466e754b7c16db0611017b1f67c0aa626ee61686d3694fbe81d1145b8b6fab5d13ad613d85d413ca968da85d12e9c64701

Download Submit
memory/1412-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1412-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1412-7-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download