c8fd7305391eaa2ad46bddec154cf2883816b32052c2e399fa3478256ae37b65

Analysis

max time kernel
142s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/05/2024, 12:24

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General

Target

2024-05-08_2eb776378648230b459dcb3dedc809ce_cryptolocker.exe
Size

41KB
MD5

2eb776378648230b459dcb3dedc809ce
SHA1

984d8e0a1939adf44e08c98fb7cf47593ca6913e
SHA256

c8fd7305391eaa2ad46bddec154cf2883816b32052c2e399fa3478256ae37b65
SHA512

6c1ca130af8ad6fc3c8de245fb8b7b6953b6f502616b3bda0e92f66446b353110d15f8d866928b7072c3cbedb6178056b24be60ee3e4d18914e1e41dc7fbca73
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCS:X6QFElP6n+gJQMOtEvwDpjBsYK/f1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325a-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	2024-05-08_2eb776378648230b459dcb3dedc809ce_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5060	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 1372 wrote to memory of 5060	1372	2024-05-08_2eb776378648230b459dcb3dedc809ce_cryptolocker.exe	94
PID 1372 wrote to memory of 5060	1372	2024-05-08_2eb776378648230b459dcb3dedc809ce_cryptolocker.exe	94
PID 1372 wrote to memory of 5060	1372	2024-05-08_2eb776378648230b459dcb3dedc809ce_cryptolocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-05-08_2eb776378648230b459dcb3dedc809ce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-08_2eb776378648230b459dcb3dedc809ce_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1372
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5060

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=1032 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
1⤵
PID:60

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
41KB

MD5
f75ce045e2fcd83d3f90840c99ddff1f

SHA1
738157c0d64cad9821f8c8b55a68783cabe4b156

SHA256
4f3881c6917dd211993abf53f5792a767420f4f02baa6b165851c7468230d0d0

SHA512
307f0933fc3a3f1361f0563bfaf4cb8eda1a2363d6178dd7a6d642fa03b55cecd99825b13f3190bdcbd1e3aaffdea7d998679bc74a896a68e311303e70c4de41

Download Submit
memory/1372-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1372-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1372-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5060-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/5060-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download