d3b1856b3fc097e49d899121df97019bf7b1641e481bfdc38e8cb6600b35e28d

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25-02-2024 02:32

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General

Target

2024-02-25_50eb1954e1f456c60cb7a6b469019f46_cryptolocker.exe
Size

31KB
MD5

50eb1954e1f456c60cb7a6b469019f46
SHA1

fb36eb53ad09c9d234b4e3733aa0faeceafc5ad9
SHA256

d3b1856b3fc097e49d899121df97019bf7b1641e481bfdc38e8cb6600b35e28d
SHA512

6bac6dd8b8bbfed2a4c679c7dcf0d88f626f5ae6478aef62aef5d87c0ead51fba07e6e8af01d8f7404573b556fd61468d1bbe433a82ac8341cfe265ccd56669d
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJ/Tl+bltoGk6Wf:bA74zYcgT/Ekd0ryfjQRSlwltYN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023216-12.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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	2024-02-25_50eb1954e1f456c60cb7a6b469019f46_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4672	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 4480 wrote to memory of 4672	4480	2024-02-25_50eb1954e1f456c60cb7a6b469019f46_cryptolocker.exe	90
PID 4480 wrote to memory of 4672	4480	2024-02-25_50eb1954e1f456c60cb7a6b469019f46_cryptolocker.exe	90
PID 4480 wrote to memory of 4672	4480	2024-02-25_50eb1954e1f456c60cb7a6b469019f46_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-25_50eb1954e1f456c60cb7a6b469019f46_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_50eb1954e1f456c60cb7a6b469019f46_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4480
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4672

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
32KB

MD5
bca7a98d0885053d11e7fb911bb2f4de

SHA1
8140573676228f530f986be3d21e6b779cf86bd0

SHA256
66e36cb50afae0ff0b31342a1e4f50c8420630ef537bc3f76abb682c9de371ac

SHA512
1d7f02840fa32db5ddd4bacc88912b4b74b6bb919e63feb4a0ef92c8d17eaa8a80b7a1ad89ff6d43f9c5eab9e21859bfee25bbc77f39ba2979a9d171e2d49989

Download Submit
memory/4480-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4480-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4480-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4672-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4672-19-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download