6321c9f69c66f919c41e422df884a8be5739520033e1d1219f4b912cb196a019

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/03/2024, 17:01

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General

Target

2024-03-18_1c12d77959865d54d312af571faf13a9_cryptolocker.exe
Size

62KB
MD5

1c12d77959865d54d312af571faf13a9
SHA1

f042a44c7e79412b3c3548a10bf786fae4c6e618
SHA256

6321c9f69c66f919c41e422df884a8be5739520033e1d1219f4b912cb196a019
SHA512

b2a7c722c3890c9ffb63fbdfaa4dd786d5390fec922fc15f5b7eba5ae0906ce5f4e436c2df5444d98a3712b823a44f7523c1c9986f8f338ba6ae7069c57395ad
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgts6T:BbdDmjr+OtEvwDpjM8O

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4040-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002332a-13.dat	CryptoLocker_rule2
behavioral2/memory/5088-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4040-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5088-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/5088-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4040-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5088-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/4040-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002332a-13.dat	UPX
behavioral2/memory/5088-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4040-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/5088-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-18_1c12d77959865d54d312af571faf13a9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5088	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 4040 wrote to memory of 5088	4040	2024-03-18_1c12d77959865d54d312af571faf13a9_cryptolocker.exe	97
PID 4040 wrote to memory of 5088	4040	2024-03-18_1c12d77959865d54d312af571faf13a9_cryptolocker.exe	97
PID 4040 wrote to memory of 5088	4040	2024-03-18_1c12d77959865d54d312af571faf13a9_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-18_1c12d77959865d54d312af571faf13a9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_1c12d77959865d54d312af571faf13a9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4040
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5088

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=2700 --field-trial-handle=2264,i,13734085038406049477,12426093271221802693,262144 --variations-seed-version /prefetch:8
1⤵
PID:4432

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
62KB

MD5
70ae6f255238dfd6d9431b49fdb3a337

SHA1
e9a4cc1bdcccd00ae9c87b990ddf5a3ffa248658

SHA256
c3f8d236598a5bbb232b3dcccf0331d3ae7fb8b0a99b5308ae5bdbfeb2cd290b

SHA512
5e0cc5431bd5bc689f53ff777a40083eedb7b8439686bbc977d82c1283920882c03e44e1cb7e06cfff504c2033e18a4c2301393df68d102c8b6a81efb3526af6

Download Submit
memory/4040-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4040-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4040-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4040-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4040-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5088-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5088-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5088-24-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5088-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download