5f503aa307e4b62e4c57d167fdc4e8333b34b1ddb35739be98ee4375cad9062d

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
07/09/2024, 07:39

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General

Target

2024-09-07_cd8c9d197e0ae2eea0cd7e1c7c191a30_cryptolocker.exe
Size

39KB
MD5

cd8c9d197e0ae2eea0cd7e1c7c191a30
SHA1

0fe43352db981b7e127ac5fb54de52439a228c00
SHA256

5f503aa307e4b62e4c57d167fdc4e8333b34b1ddb35739be98ee4375cad9062d
SHA512

34c8fbc802b5692f3d3d1015e1418af759158be4ce91a57bc3707a2ae1c94f7009383da24cfbd38e46ca5c3736c5857e73d6b8ecfe99c0a08635f0dc85abb3ab
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaBs:qDdFJy3QMOtEvwDpjjWMl7Td2

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	2024-09-07_cd8c9d197e0ae2eea0cd7e1c7c191a30_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3532	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2388-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00080000000234b6-13.dat	upx
behavioral2/memory/2388-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3532-27-0x0000000000500000-0x0000000000510000-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	2024-09-07_cd8c9d197e0ae2eea0cd7e1c7c191a30_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 3532	2388	2024-09-07_cd8c9d197e0ae2eea0cd7e1c7c191a30_cryptolocker.exe	88
PID 2388 wrote to memory of 3532	2388	2024-09-07_cd8c9d197e0ae2eea0cd7e1c7c191a30_cryptolocker.exe	88
PID 2388 wrote to memory of 3532	2388	2024-09-07_cd8c9d197e0ae2eea0cd7e1c7c191a30_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-09-07_cd8c9d197e0ae2eea0cd7e1c7c191a30_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-07_cd8c9d197e0ae2eea0cd7e1c7c191a30_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2388
- 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:3532

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
39KB

MD5
89864245c2eb0d04309e3e85409f477a

SHA1
8bcc0e3f70bcab768c3d2d91e592ebcdb24e17f4

SHA256
8f4e5481bea26954e988e7cdc9cdfe4f57d574d915d8e02581a1df29c2d06d0f

SHA512
540d40a166fdeb992dec18f65a127990496d4833db30395ca9b04c0d038b6b963703e2e3dd31a2bc7187b737bf3541406597cff09a2c7e669d7b0f573fe5377b

Download Submit
memory/2388-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2388-1-0x0000000002220000-0x0000000002226000-memory.dmp

Filesize
24KB

Download
memory/2388-2-0x0000000002220000-0x0000000002226000-memory.dmp

Filesize
24KB

Download
memory/2388-3-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/2388-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3532-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3532-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3532-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download