03d5b7df61d2d5453d75a8921596abe7f0d2459aa421d93cfc7d46edaa60196b

Analysis

max time kernel
142s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 21:46

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General

Target

2024-04-18_8cf9a288751c96ef88b8d162b21b7fa9_cryptolocker.exe
Size

72KB
MD5

8cf9a288751c96ef88b8d162b21b7fa9
SHA1

93ea32702194521476b33f1f4925db8a144d54c6
SHA256

03d5b7df61d2d5453d75a8921596abe7f0d2459aa421d93cfc7d46edaa60196b
SHA512

7fb71c7f7610eac92c115f962081e66db7d44adee8bf39ee3c425a96149995ec68191fb2f075746ac24b830805d2dd2fc3a5c511be924b37c282d94a4cc1bf05
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1sv/:X6a+SOtEvwDpjBZYvQd28/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002322b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002322b-12.dat	CryptoLocker_set1

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	2024-04-18_8cf9a288751c96ef88b8d162b21b7fa9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2752	asih.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 3420 wrote to memory of 2752	3420	2024-04-18_8cf9a288751c96ef88b8d162b21b7fa9_cryptolocker.exe	92
PID 3420 wrote to memory of 2752	3420	2024-04-18_8cf9a288751c96ef88b8d162b21b7fa9_cryptolocker.exe	92
PID 3420 wrote to memory of 2752	3420	2024-04-18_8cf9a288751c96ef88b8d162b21b7fa9_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-04-18_8cf9a288751c96ef88b8d162b21b7fa9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_8cf9a288751c96ef88b8d162b21b7fa9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2752

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=1344 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
1⤵
PID:4728

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\asih.exe

Filesize
72KB

MD5
888c8ab3b4694f4448c04802d029be27

SHA1
f8000ebbd0ae216ec3871dab900769c7e9c8e2c6

SHA256
71cf97e31c6547c77e8d0d57aea8e0ef9ee0b2b2cd473b8cbdc17780694916ba

SHA512
c07eeacff782fd1339557f4a85e844b3a5009c09203582cd15da95f8989fefeb09ea34ca1106464cd115ea485d81f19bd1982e80859adfb057f00be4dcbc65a8

Download Submit
memory/2752-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2752-19-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3420-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3420-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3420-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download