fefdce5d0488845d69e001a0aecd8f94fea887aa4aa1678eb8e728c0fd78e5bb

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 19:09

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General

Target

2024-05-22_d05c6487a4d3c7ffaa16550cba27ec7d_cryptolocker.exe
Size

41KB
MD5

d05c6487a4d3c7ffaa16550cba27ec7d
SHA1

aaf10abd9f751f9d56b955f78f4e4e3c5545d3bc
SHA256

fefdce5d0488845d69e001a0aecd8f94fea887aa4aa1678eb8e728c0fd78e5bb
SHA512

ae5259b1dc0b415087356db97cb6ede06757d1ddbbc3642f4c4fd40f0a1a237c9c46e382d6d3611608809206e9d8ab72ad6077f0099680969861a80f3475d060
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmT3HwnCy:bA6YcA/X6G0W143Qp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	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

Processes:

2024-05-22_d05c6487a4d3c7ffaa16550cba27ec7d_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-22_d05c6487a4d3c7ffaa16550cba27ec7d_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

1412 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1412	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_d05c6487a4d3c7ffaa16550cba27ec7d_cryptolocker.exe

description	pid	process	target process
PID 2372 wrote to memory of 1412	2372	2024-05-22_d05c6487a4d3c7ffaa16550cba27ec7d_cryptolocker.exe	hasfj.exe
PID 2372 wrote to memory of 1412	2372	2024-05-22_d05c6487a4d3c7ffaa16550cba27ec7d_cryptolocker.exe	hasfj.exe
PID 2372 wrote to memory of 1412	2372	2024-05-22_d05c6487a4d3c7ffaa16550cba27ec7d_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_d05c6487a4d3c7ffaa16550cba27ec7d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_d05c6487a4d3c7ffaa16550cba27ec7d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1412

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
41KB

MD5
74a7767ce580c45e5ca2db81ca60571a

SHA1
1eafb8bcf9bcf7771235c72ae150aa5e88b2b4f4

SHA256
bac27153cf4e98ef6f7971940c5d4d31124b6c9ce4463c1f4838f80ef37b89e9

SHA512
6bd995d92dcddc0ac2bb11ac4ffe712a92d384e37d775dda0d79088e5133362782ea33eb8d035ddb0a6e86671efc9d26b63218f7ff4cad9a6e7891f82a0fd1c7

Download Submit
memory/1412-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1412-23-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/2372-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2372-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2372-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download