156df9312a7949ae08c3aa369e5cec591190d222a1fd77913fa444cde551d2a5

Analysis

max time kernel
141s
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
05/05/2024, 04:37

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General

Target

2024-05-05_944edf8388f3629f649ba1d29d2bfd91_cryptolocker.exe
Size

43KB
MD5

944edf8388f3629f649ba1d29d2bfd91
SHA1

583af3bc144880dd0f091d3e1dd2bde4f93d08be
SHA256

156df9312a7949ae08c3aa369e5cec591190d222a1fd77913fa444cde551d2a5
SHA512

6c521f25c103fe5fc2cdf0460a6e063ffbfd8362ecb220627cf3d9fddedf71cc944f81e1d1896886bf64befbc7de85f6af43115f2a236ea737a76f8d17075fc4
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD9HY:X6QFElP6n+gJQMOtEvwDpjBmzDkWDtY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325b-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	2024-05-05_944edf8388f3629f649ba1d29d2bfd91_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4448	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 568 wrote to memory of 4448	568	2024-05-05_944edf8388f3629f649ba1d29d2bfd91_cryptolocker.exe	90
PID 568 wrote to memory of 4448	568	2024-05-05_944edf8388f3629f649ba1d29d2bfd91_cryptolocker.exe	90
PID 568 wrote to memory of 4448	568	2024-05-05_944edf8388f3629f649ba1d29d2bfd91_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-05_944edf8388f3629f649ba1d29d2bfd91_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-05_944edf8388f3629f649ba1d29d2bfd91_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:568
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4448

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=4048 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
1⤵
PID:1224

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
43KB

MD5
fdbda96e6e4783f41bbf202954fccc05

SHA1
a99d8992dbe83d112d727c8d44d603fe0a0acc8d

SHA256
77bbf735f153369e0b75299a1b71d28ad0ee7602488569636ba3212983c8335f

SHA512
e3144e85ab26055dc60c106abf34a306bd886d0d89f9f33708f05ff1a25bd9f9004e6252b5c63e948052bce4ec7ef22629a655406fb1feaeee17c0f779ae758e

Download Submit
memory/568-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/568-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/568-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/4448-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4448-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download