35f238d179523f598e14f35d6ca0aa71a8d74e5cb69eefbc15f707485a060efa

Analysis

max time kernel
154s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 11:53

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General

Target

2024-04-21_fb05ac19d9fb7e62b6d68a472e9d3c9f_cryptolocker.exe
Size

52KB
MD5

fb05ac19d9fb7e62b6d68a472e9d3c9f
SHA1

ef39c7dbc0940a98bfa31e5c414d295ba81538a2
SHA256

35f238d179523f598e14f35d6ca0aa71a8d74e5cb69eefbc15f707485a060efa
SHA512

a92d010ed43b29e39d4d3e9f8c6ef5d5e62828fb7e73327d894aa98844ac8c7998d57982ccd0ed01ad4a64e7245a446cccc323eecd2c120b5efc419be73c66ea
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CS4Gjh:bgGYcA/53GAA6y37Q6dI+d5QGl

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002323c-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-21_fb05ac19d9fb7e62b6d68a472e9d3c9f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2076	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 4292 wrote to memory of 2076	4292	2024-04-21_fb05ac19d9fb7e62b6d68a472e9d3c9f_cryptolocker.exe	90
PID 4292 wrote to memory of 2076	4292	2024-04-21_fb05ac19d9fb7e62b6d68a472e9d3c9f_cryptolocker.exe	90
PID 4292 wrote to memory of 2076	4292	2024-04-21_fb05ac19d9fb7e62b6d68a472e9d3c9f_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-04-21_fb05ac19d9fb7e62b6d68a472e9d3c9f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_fb05ac19d9fb7e62b6d68a472e9d3c9f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4292
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2076

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=3720 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
1⤵
PID:2716

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
52KB

MD5
3807a05f24f2aef00cf9404fda995363

SHA1
b80e4857098060a8c9bf312c3839dc8313729cbc

SHA256
8d57efdb12c9c3c35d519659b08265685a842af486edab8791ac16b5dc9a7bb1

SHA512
0f70de3e8f1c27030934ae71cdfa8ab7fa618e541827f40e40f95622fb962ea8d3c3c26f43647183f227135a086a2be7b972dec38c2ef7ccaef0d8040ed17c83

Download Submit
memory/2076-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2076-19-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4292-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4292-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4292-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download