b1c8bf9b66c73fc9dbf0805491dfa944b3b0374da829e56074b3d8422a422148

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2024 12:17

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General

Target

2024-09-05_dd79118e794223002d484b12462e47fa_cryptolocker.exe
Size

38KB
MD5

dd79118e794223002d484b12462e47fa
SHA1

a69818ad18842562e05c864b3166911d601fb182
SHA256

b1c8bf9b66c73fc9dbf0805491dfa944b3b0374da829e56074b3d8422a422148
SHA512

c603d64608cbd75294eaf87ccb8057d144f855a30946343efc548193c8f0b8a0143a19b0ffd67be62694258ed3e0db719b8d5dcf0e56fc83f22b6bfa139a37c9
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axK3hA:qUmnpomddpMOtEvwDpjjaYaQhA

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	2024-09-05_dd79118e794223002d484b12462e47fa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4276	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3276-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00090000000233b9-13.dat	upx
behavioral2/memory/3276-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4276-26-0x0000000000500000-0x000000000050F000-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	2024-09-05_dd79118e794223002d484b12462e47fa_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 3276 wrote to memory of 4276	3276	2024-09-05_dd79118e794223002d484b12462e47fa_cryptolocker.exe	84
PID 3276 wrote to memory of 4276	3276	2024-09-05_dd79118e794223002d484b12462e47fa_cryptolocker.exe	84
PID 3276 wrote to memory of 4276	3276	2024-09-05_dd79118e794223002d484b12462e47fa_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-05_dd79118e794223002d484b12462e47fa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_dd79118e794223002d484b12462e47fa_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3276
- 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:4276

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

Replay Monitor

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Downloads

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

Filesize
38KB

MD5
a01a3db0f5674eb169616f2ed6c87e80

SHA1
5387090f71ad8d379cb51209b2d1529cfeae74ba

SHA256
3cf669e12864c235207a881aab15b565b5a735ff684a12cb2880f3faa5b58018

SHA512
a596142429209c91f258eb080d2d5dc5dfcbb936b11b4bb912d88ffc83dbaada337de5dd095cb9802e925b90dc35ac77c3b73e63258c9278400e9f364094dd02

Download Submit
memory/3276-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3276-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3276-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3276-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3276-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4276-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4276-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4276-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download