448fb9593097d3d1ab45eef3ab987c27ed49cf0817cc41afa2bf2d53b3c9d31c

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 07:08

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General

Target

2024-05-16_a7c9e9a90cdcefdffd1bf243659094d3_cryptolocker.exe
Size

76KB
MD5

a7c9e9a90cdcefdffd1bf243659094d3
SHA1

84402129e3f4057dd3102a0271cd73cde85f24a7
SHA256

448fb9593097d3d1ab45eef3ab987c27ed49cf0817cc41afa2bf2d53b3c9d31c
SHA512

041b9b4bf6f310c9ff4bbf9f6187355e812dbaa7379faff06fe730aadc429079afe521296d02dfe6a88398b21b415d42e96f874759168446800aea3e8d11e870
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsoLkN:X6a+SOtEvwDpjBZYvQd2e

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0005000000022975-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0005000000022975-12.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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-16_a7c9e9a90cdcefdffd1bf243659094d3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
852	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 3168 wrote to memory of 852	3168	2024-05-16_a7c9e9a90cdcefdffd1bf243659094d3_cryptolocker.exe	92
PID 3168 wrote to memory of 852	3168	2024-05-16_a7c9e9a90cdcefdffd1bf243659094d3_cryptolocker.exe	92
PID 3168 wrote to memory of 852	3168	2024-05-16_a7c9e9a90cdcefdffd1bf243659094d3_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-05-16_a7c9e9a90cdcefdffd1bf243659094d3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_a7c9e9a90cdcefdffd1bf243659094d3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:852

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 --field-trial-handle=3852,i,1067197275908310731,12785105794523264014,262144 --variations-seed-version --mojo-platform-channel-handle=4236 /prefetch:8
1⤵
PID:4680

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
77KB

MD5
285a81aaa74c8ceb4ba12fe4e72791b4

SHA1
0d8d1c02ee823a4e4a8777f2ccf1098672afc1d7

SHA256
8b5b6325081cda66ad66ffb6867df5416047a3bfe5b44926fa79694acac52251

SHA512
b24e41d9264ff700f17374db2191d99332a8b33dbc01726351fc05cef23ab8a5b48e65493551beaea8230d7e265fd9d7f92e71a40729bdedcbd669408f059dfc

Download Submit
memory/852-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/852-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3168-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3168-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3168-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download