efba5ae11f3b83cecfde1ef25d16a889f0ba25fa44267a633e7de68198f1210a

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-10-2024 07:08

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General

Target

2024-10-09_bf28ee7f8fbb5d2355b1d3c2406a86bc_cryptolocker.exe
Size

32KB
MD5

bf28ee7f8fbb5d2355b1d3c2406a86bc
SHA1

7fd9ae25fb422c948b6f549ad0d1d79596891a67
SHA256

efba5ae11f3b83cecfde1ef25d16a889f0ba25fa44267a633e7de68198f1210a
SHA512

66dc5424908e3d8d9f603fbd75852be3c5d0089d80e067e9352804ecccc1174d105c1a7e11c6c90725102b56d9c630b7206867d5a59b55eb27c4464ce10a0591
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axct:qUmnpomddpMOtEvwDpjjaYag

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2024-10-09_bf28ee7f8fbb5d2355b1d3c2406a86bc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2800	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2476-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0008000000023c8a-13.dat	upx
behavioral2/memory/2476-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2800-27-0x0000000000500000-0x000000000050F000-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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-09_bf28ee7f8fbb5d2355b1d3c2406a86bc_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 2800	2476	2024-10-09_bf28ee7f8fbb5d2355b1d3c2406a86bc_cryptolocker.exe	86
PID 2476 wrote to memory of 2800	2476	2024-10-09_bf28ee7f8fbb5d2355b1d3c2406a86bc_cryptolocker.exe	86
PID 2476 wrote to memory of 2800	2476	2024-10-09_bf28ee7f8fbb5d2355b1d3c2406a86bc_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-10-09_bf28ee7f8fbb5d2355b1d3c2406a86bc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-09_bf28ee7f8fbb5d2355b1d3c2406a86bc_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2476
- 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:2800

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
33KB

MD5
71b7c3269fe4be3ddd53a424642fa172

SHA1
b98a09caef87d4d3fad3d0af004e0cdce55dbfb0

SHA256
46649d0470b408b7a07f490289adb4d1497160cf1393234b05086dffe9a33b35

SHA512
b75dd137225c17f8d6d63b835ebec02005fbad4235e9a26b0c76671197e1e58d5c92bd383ba57815ea3ebec2f24a4f8fa2a9c65eb27101bae4ea76b62bac0af1

Download Submit
memory/2476-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2476-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/2476-2-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/2476-3-0x00000000021A0000-0x00000000021A6000-memory.dmp

Filesize
24KB

Download
memory/2476-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2800-20-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/2800-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2800-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download