47f1340084e8246053edd146578c808184ca5a36933ab8ebb8b99d483364c3dd

Analysis

max time kernel
150s
max time network
156s
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, 13:24

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe
Size

53KB
MD5

06645ea8bbc515db86efad97e2b3d107
SHA1

5870c7618d8145ccdd95d8ab4c1f8b4d812d7b65
SHA256

47f1340084e8246053edd146578c808184ca5a36933ab8ebb8b99d483364c3dd
SHA512

e4aa65b294daea0005a803fdce9997a1ec9e245c9f7fef91f20b410cbbf32fca2254d40a19e317e25e8de59f679f6b7bac726f848e80ea3f266c6177e7eb5a04
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6ImpyT:BbdDmjr+OtEvwDpjMA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1020-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023203-13.dat	CryptoLocker_rule2
behavioral2/memory/3332-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1020-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3332-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1020-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3332-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1020-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023203-13.dat	UPX
behavioral2/memory/3332-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1020-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3332-27-0x0000000000500000-0x0000000000510000-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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3332	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 1020 wrote to memory of 3332	1020	2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe	88
PID 1020 wrote to memory of 3332	1020	2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe	88
PID 1020 wrote to memory of 3332	1020	2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_06645ea8bbc515db86efad97e2b3d107_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1020
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3332

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
53KB

MD5
a493a31f5d09c6bbf02902d6388c10ce

SHA1
4b7d40d65d800c368edb12b43102eb1bf33508f3

SHA256
d7abb18ca450581542c197f8a3abb1be322e2ceb4708da708c19225d87d07fb8

SHA512
7699af10b95f9dd4d05b14db859588bed1a93aad1de8b963eba6d2c9e6ef5324dfaaf190df7c8a263b706be573812e629fe3ecd7caa3c8066473a52df20ae527

Download Submit
memory/1020-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1020-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/1020-2-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/1020-3-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1020-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3332-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3332-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3332-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3332-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download