4b14db2c59238468345657e5495159a3a398167e622cf6e8c735cac265ca04f4

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02/10/2024, 09:04

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General

Target

2024-10-02_b8b6310f507259c298b5ab797ca504fd_cryptolocker.exe
Size

97KB
MD5

b8b6310f507259c298b5ab797ca504fd
SHA1

75dbfcb8275bcf94871e780650ad10b062dede61
SHA256

4b14db2c59238468345657e5495159a3a398167e622cf6e8c735cac265ca04f4
SHA512

2ed89977c64b8504a00503dc5b42b2f38230b0e1c7702de7e63cbe75dbb835dbf4a4a5d7d5c447d4b527944e48250723df7d424ee079a363da3bbc3e5aa5641a
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviP5X:AnBdOOtEvwDpj6zr

Score

7^/10

discovery upx

Malware Config

Signatures

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	2024-10-02_b8b6310f507259c298b5ab797ca504fd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2580	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3960-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00090000000233f3-13.dat	upx
behavioral2/memory/3960-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2580-25-0x0000000000500000-0x000000000050F000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-02_b8b6310f507259c298b5ab797ca504fd_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3960 wrote to memory of 2580	3960	2024-10-02_b8b6310f507259c298b5ab797ca504fd_cryptolocker.exe	82
PID 3960 wrote to memory of 2580	3960	2024-10-02_b8b6310f507259c298b5ab797ca504fd_cryptolocker.exe	82
PID 3960 wrote to memory of 2580	3960	2024-10-02_b8b6310f507259c298b5ab797ca504fd_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-10-02_b8b6310f507259c298b5ab797ca504fd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-02_b8b6310f507259c298b5ab797ca504fd_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3960
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2580

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
97KB

MD5
7a2e1ede8502c71dbdc71d87faef8fb5

SHA1
66bfe39766d8308d342627121dd1f8631cdb0490

SHA256
5c80171ca88528ab3e43fb3e42374a54fa7a4b565fc4a6cef95b66dec696869a

SHA512
522f1a2c7ae6c99a183f1e6cd256776ce7c2c05a828b0caa3859e7ae94672530570d73bd8f2c1d43dd084de86f75c6c50d384c8862b30d6d70b200957d213446

Download Submit
memory/2580-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2580-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3960-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3960-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3960-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3960-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3960-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download