9b666b6ec5cb071f301a6c387e068a4cd55b9e3f41e7d06390812b9e668b07d3

Analysis

max time kernel
151s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/06/2024, 14:46

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General

Target

2024-06-14_ce4903ba1f69ffd5fef834c6865866ec_cryptolocker.exe
Size

34KB
MD5

ce4903ba1f69ffd5fef834c6865866ec
SHA1

818ac797da3b059abc18da2c654a62331c242a2c
SHA256

9b666b6ec5cb071f301a6c387e068a4cd55b9e3f41e7d06390812b9e668b07d3
SHA512

fcfd5c90441482e19d22192682e0325be287d1d0b961b19a0ec2bc2426762cd12db93b8dc2d68aa993959564e975111bc6898ae232ce96e68b6d865d583ae91f
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvJF3c:bG74zYcgT/Ekd0ryfjkbM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1712-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001000000002324f-13.dat	CryptoLocker_rule2
behavioral2/memory/1712-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3104-26-0x0000000008000000-0x000000000800A000-memory.dmp	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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-06-14_ce4903ba1f69ffd5fef834c6865866ec_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3104	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 1712 wrote to memory of 3104	1712	2024-06-14_ce4903ba1f69ffd5fef834c6865866ec_cryptolocker.exe	91
PID 1712 wrote to memory of 3104	1712	2024-06-14_ce4903ba1f69ffd5fef834c6865866ec_cryptolocker.exe	91
PID 1712 wrote to memory of 3104	1712	2024-06-14_ce4903ba1f69ffd5fef834c6865866ec_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-14_ce4903ba1f69ffd5fef834c6865866ec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_ce4903ba1f69ffd5fef834c6865866ec_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3104

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:5008

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
34KB

MD5
53af1709df2874c9cdefe014bb534f7d

SHA1
5d91878c10c16384a3b5eab888e944518d949e63

SHA256
28f2c52b98ebc3fc09f06905bbc7a86ecd5a8699a0aabffb3fda6417a0512b60

SHA512
e63d3f4a92e2ea93d0378fb0968e2511e54b643e34619ea16ab22c0c26c6fd0d917d60958ff8c7dcb4505715af283875383d94f3945a2e23ea027b1856530809

Download Submit
memory/1712-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1712-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1712-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1712-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1712-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3104-25-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/3104-19-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3104-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download