cea63202fd1a1471497ee327e423a4b06ee6141d78d50dabcf84290e6784eca6

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 23:31

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General

Target

2024-03-15_51797d9522e2cc8a1b93ebe4d3eba740_cryptolocker.exe
Size

38KB
MD5

51797d9522e2cc8a1b93ebe4d3eba740
SHA1

367d6ca7b56bde2efd8d82f177b61369dad6827a
SHA256

cea63202fd1a1471497ee327e423a4b06ee6141d78d50dabcf84290e6784eca6
SHA512

8ebdba154b73bc0cabacc2e3867cb6b30c55c9c8c8f6c6cc18e57e841c0bbd2b19c7e4a2b756ff989055b5b06f2fc2ff1351f109b8cd18364c0dd8e2514fdd2e
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCp4N:X6QFElP6n+gJQMOtEvwDpjBmzDUp4N

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023242-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023242-12.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	2024-03-15_51797d9522e2cc8a1b93ebe4d3eba740_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
232	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 2704 wrote to memory of 232	2704	2024-03-15_51797d9522e2cc8a1b93ebe4d3eba740_cryptolocker.exe	99
PID 2704 wrote to memory of 232	2704	2024-03-15_51797d9522e2cc8a1b93ebe4d3eba740_cryptolocker.exe	99
PID 2704 wrote to memory of 232	2704	2024-03-15_51797d9522e2cc8a1b93ebe4d3eba740_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-15_51797d9522e2cc8a1b93ebe4d3eba740_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_51797d9522e2cc8a1b93ebe4d3eba740_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:232

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=1348 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
1⤵
PID:3576

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
38KB

MD5
cb886f36d9ff14d71cd12b8546ce74ba

SHA1
5024d2f4306d7c211c322315cd240c28f5a70819

SHA256
5f9c31b79c5ef941d64ec2b50eac103f969c714ae901d4e16d5d0b8b153188f1

SHA512
340164c87c65d6c12711a1338b963e70cd76c69b1373bd1c72d92b0a9f763e298791ac1de8bd253e352e4be40762e46c1d81cf5ea2e1f2c7424c278f290c32fc

Download Submit
memory/232-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/232-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2704-0-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2704-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2704-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download