4d48b94aadde388e5e362105482c6d0d166ae434efb5b6f844b7cecb039324e2

Analysis

max time kernel
141s
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
09-04-2024 15:44

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General

Target

2024-04-09_f3114c9552866871bd30c79e26f341a9_cryptolocker.exe
Size

133KB
MD5

f3114c9552866871bd30c79e26f341a9
SHA1

184af4de2eef2e154e128898b367577c3fe854dc
SHA256

4d48b94aadde388e5e362105482c6d0d166ae434efb5b6f844b7cecb039324e2
SHA512

4e1ed227a08857010a8c51f8381d16dcce5c115f8ebac96600c736d1970419899d2eaf625ed1b1e2ab2afa058b6bde76a3b1353f7676c94ef07d90ba9942eedf
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbxGYQbxGYQblPgy:V6a+pOtEvwDpjt22P

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000001ea83-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000001ea83-12.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	2024-04-09_f3114c9552866871bd30c79e26f341a9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1960	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 5300 wrote to memory of 1960	5300	2024-04-09_f3114c9552866871bd30c79e26f341a9_cryptolocker.exe	95
PID 5300 wrote to memory of 1960	5300	2024-04-09_f3114c9552866871bd30c79e26f341a9_cryptolocker.exe	95
PID 5300 wrote to memory of 1960	5300	2024-04-09_f3114c9552866871bd30c79e26f341a9_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-04-09_f3114c9552866871bd30c79e26f341a9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_f3114c9552866871bd30c79e26f341a9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5300
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1960

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=1324 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:5116

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
133KB

MD5
e28f14e913511f9aeac36ebe105a6744

SHA1
b3b082691942de33420f81e537d706249a99fe22

SHA256
41d1aa911cdcf80ccc686eaf70a189949932dcf8aa791710496b1275d16b35a0

SHA512
4f970ce0719fda26bb8509b28db89c94a933fee28bad1120498496b6201b86ef3469e5087042373b91c84d6584584f6ff8be1142b1c6cc0a3685a06400217478

Download Submit
memory/5300-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5300-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5300-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download