1c5e131277676c4d465782da0459dab5d3a2a4a7ed779f4d6dd61a755de35857

Analysis

max time kernel
148s
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
30/05/2024, 12:36

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General

Target

2024-05-30_f79691dece111eddd34fb001718b7452_cryptolocker.exe
Size

61KB
MD5

f79691dece111eddd34fb001718b7452
SHA1

ffa62e7fb9ce6c84e7a522985be63229f7b3c254
SHA256

1c5e131277676c4d465782da0459dab5d3a2a4a7ed779f4d6dd61a755de35857
SHA512

9b64e8d256a43759d9c4e5906ea8b40288984a8b63d8d3db761882a0a2a0c285eaa3a0b4d7d7b960c987ef21ec1d46862ac8644f6514e4541b13d1c2fab383e4
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsi0:BbdDmjr+OtEvwDpjM8l

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4544-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002326c-13.dat	CryptoLocker_rule2
behavioral2/memory/4544-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3516-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/4544-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3516-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4544-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002326c-13.dat	UPX
behavioral2/memory/4544-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3516-27-0x0000000000500000-0x0000000000510000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-30_f79691dece111eddd34fb001718b7452_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3516	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 4544 wrote to memory of 3516	4544	2024-05-30_f79691dece111eddd34fb001718b7452_cryptolocker.exe	91
PID 4544 wrote to memory of 3516	4544	2024-05-30_f79691dece111eddd34fb001718b7452_cryptolocker.exe	91
PID 4544 wrote to memory of 3516	4544	2024-05-30_f79691dece111eddd34fb001718b7452_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-30_f79691dece111eddd34fb001718b7452_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_f79691dece111eddd34fb001718b7452_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4544
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3516

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=3816 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:1064

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
61KB

MD5
71aa54c800f57a0797de7e6c23102b38

SHA1
bd6da2a2409130167d61b40c3f31066169fe9ffc

SHA256
6c46a48ee3891e608728e88c9a441c30c48a287ffcf7bf1e86d2a6bd69abbbe2

SHA512
44a1e0f1ec1413a2fbc16edaa9e9086d51889ec32df21f83da348ba7daa81d056964325a9fd008de851188efb8649c83b6daaaf6385d641cc23ceb29a1ce9535

Download Submit
memory/3516-20-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/3516-26-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3516-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4544-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4544-1-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4544-2-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4544-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4544-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download