4e2ab533ada5b546b555b4be78f17c8e6644349465cc9839ecd66fc5292beffc

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17/02/2024, 23:08

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General

Target

2024-02-17_f3733c7ebb11071cefe1b2f8ded46ce7_cryptolocker.exe
Size

29KB
MD5

f3733c7ebb11071cefe1b2f8ded46ce7
SHA1

dd89c3b4206915638023f8289b0cba0b46d8d94d
SHA256

4e2ab533ada5b546b555b4be78f17c8e6644349465cc9839ecd66fc5292beffc
SHA512

27a30f680bcd61f57dd591d5cba04aacdaf7d933fc47a7008d7128f89f5b8695ba8aa01ab0502ef0d52a4757cfc6151e7def5b1eb9bb227cfe4abcf0f19908d8
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJ5STVnTl:bA74zYcgT/Ekd0ryfjQRSnWVTl

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023220-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-17_f3733c7ebb11071cefe1b2f8ded46ce7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1352	hasfj.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2892 wrote to memory of 1352	2892	2024-02-17_f3733c7ebb11071cefe1b2f8ded46ce7_cryptolocker.exe	84
PID 2892 wrote to memory of 1352	2892	2024-02-17_f3733c7ebb11071cefe1b2f8ded46ce7_cryptolocker.exe	84
PID 2892 wrote to memory of 1352	2892	2024-02-17_f3733c7ebb11071cefe1b2f8ded46ce7_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-17_f3733c7ebb11071cefe1b2f8ded46ce7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_f3733c7ebb11071cefe1b2f8ded46ce7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2892
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1352

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\hasfj.exe

Filesize
30KB

MD5
c23f4a72f4f916f86a8c875358f9535f

SHA1
0446e310d1d09e514f61ade10269ddf63613ddfe

SHA256
1a93b04714721e6d81f56076a807e9287ee0ca21fffc0ae6281384feb8d890fb

SHA512
ab96565895cfb74d56b84fb72f591cc5aacf0fe9f2c1d7c0c5ba125c9e151cb5ed8122148087b10f585d12284b0cb000399ef569c8819aaeae0f7cee90a5e81b

Download Submit
memory/1352-17-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1352-19-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/2892-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2892-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2892-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download