2d4bbcbb548851643983202fb5067618cae23ba71e3dd1af63d00ac66fd09b1c

Analysis

max time kernel
149s
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
09/09/2024, 05:45

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General

Target

2024-09-09_79228e383db2dbbafa6d473984253fa1_cryptolocker.exe
Size

55KB
MD5

79228e383db2dbbafa6d473984253fa1
SHA1

eb893dfd8b8fe506041763e37cbbe034fc26546c
SHA256

2d4bbcbb548851643983202fb5067618cae23ba71e3dd1af63d00ac66fd09b1c
SHA512

fa371d46e03bd1b717965a55162c44f0960b2e540a426216dd41a89f88b26a73c05041bec9ed5402cb901abdad8d180fdc643f207dedd1064ccf0843688e34e0
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOkgV:z6QFElP6n+gKmddpMOtEvwDpj31ikgV

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024-09-09_79228e383db2dbbafa6d473984253fa1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2788	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4652-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023472-13.dat	upx
behavioral2/memory/4652-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2788-25-0x0000000000500000-0x0000000000510000-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	2024-09-09_79228e383db2dbbafa6d473984253fa1_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 4652 wrote to memory of 2788	4652	2024-09-09_79228e383db2dbbafa6d473984253fa1_cryptolocker.exe	86
PID 4652 wrote to memory of 2788	4652	2024-09-09_79228e383db2dbbafa6d473984253fa1_cryptolocker.exe	86
PID 4652 wrote to memory of 2788	4652	2024-09-09_79228e383db2dbbafa6d473984253fa1_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-09-09_79228e383db2dbbafa6d473984253fa1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-09_79228e383db2dbbafa6d473984253fa1_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4652
- 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:2788

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
56KB

MD5
d83ebecb0684cc0636bb73d167942ede

SHA1
b7af62dbc6b40328db7eb661cae8c60f2ae89d46

SHA256
fa4f4aa78e60e68adbb8e2f5e6040ce24fb1f2b23b10ff80407b7cce219783ab

SHA512
e02c6511ff99a6e117a8da8260a8bc8be019ef69ae3a90d2c7c672e77820459867ca17be9ed78d91713414506bc3da32ddaea22d1a4f05c73f01e8650312b188

Download Submit
memory/2788-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4652-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4652-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4652-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4652-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4652-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download