86d8bb9340ff4ec3dc8e435009e20802bee946a376015a9a7abfe2fc7eb02679

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
05/09/2024, 12:14

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General

Target

2024-09-05_b6739e0c959ce94e953c648c5f46b129_cryptolocker.exe
Size

40KB
MD5

b6739e0c959ce94e953c648c5f46b129
SHA1

d9fc8aacb18d678a285a79cfbb55ace7bad426b7
SHA256

86d8bb9340ff4ec3dc8e435009e20802bee946a376015a9a7abfe2fc7eb02679
SHA512

eed7386955df2b07e35660c873c2d865d8e1ddea8f09432fba09b1a9b41a66289fe4c99d7cd5438a33b7f2dc9be30ac7b17d3340ccedd0f2ac2e208e458da795
SSDEEP

768:qTVbxjgQNQXtckstOOtEvwDpjAaD3TUogs/VXpAPWRin:qTJu9cvMOtEvwDpjppVXzRi

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	2024-09-05_b6739e0c959ce94e953c648c5f46b129_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1100	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3788-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000023449-13.dat	upx
behavioral2/memory/3788-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1100-27-0x0000000000500000-0x000000000050F000-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	2024-09-05_b6739e0c959ce94e953c648c5f46b129_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 3788 wrote to memory of 1100	3788	2024-09-05_b6739e0c959ce94e953c648c5f46b129_cryptolocker.exe	85
PID 3788 wrote to memory of 1100	3788	2024-09-05_b6739e0c959ce94e953c648c5f46b129_cryptolocker.exe	85
PID 3788 wrote to memory of 1100	3788	2024-09-05_b6739e0c959ce94e953c648c5f46b129_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-05_b6739e0c959ce94e953c648c5f46b129_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_b6739e0c959ce94e953c648c5f46b129_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3788
- 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:1100

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
40KB

MD5
564c272dbdd4ee464798a231b5ba64a0

SHA1
148d8093a217fbe31594ada91f7ddeed3dd6368a

SHA256
529b7b5a036e85976dc075d66ab0dd675034f8baf588da3624167057ca01aab9

SHA512
8e2e341c165dd18be20ffbc162fe4a7433bd1e5a4bfd8d1e090793e79d707a3010a132710b1648f6b1dc2eb70e35276c0c52b05d9d7e2c8417f60d4653aa3618

Download Submit
memory/1100-21-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1100-20-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1100-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3788-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3788-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3788-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3788-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3788-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download