a9f3dbbe2ebc57ef713ae34b069c3c649aa727a2986626110bc796f7dce24aca

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2024, 19:22

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General

Target

2024-10-03_4f205933f49b51cb6ebd7b50713942a5_cryptolocker.exe
Size

37KB
MD5

4f205933f49b51cb6ebd7b50713942a5
SHA1

354672a46282ab7d7586dc482845c9f19f162fa0
SHA256

a9f3dbbe2ebc57ef713ae34b069c3c649aa727a2986626110bc796f7dce24aca
SHA512

64b59f0b345ec5b088a0e57a32138d9c272bfc431b3e9770b41d88eed7e8f6b39d06ee832f55b2ce5deace02fe45765b164228e27d60a864a6f229ed8668ceb6
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITn:qDdFJy3QMOtEvwDpjjWMl7Tn

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	2024-10-03_4f205933f49b51cb6ebd7b50713942a5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3608	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1676-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000233e7-13.dat	upx
behavioral2/memory/1676-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3608-27-0x0000000000500000-0x0000000000510000-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	2024-10-03_4f205933f49b51cb6ebd7b50713942a5_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 1676 wrote to memory of 3608	1676	2024-10-03_4f205933f49b51cb6ebd7b50713942a5_cryptolocker.exe	82
PID 1676 wrote to memory of 3608	1676	2024-10-03_4f205933f49b51cb6ebd7b50713942a5_cryptolocker.exe	82
PID 1676 wrote to memory of 3608	1676	2024-10-03_4f205933f49b51cb6ebd7b50713942a5_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-10-03_4f205933f49b51cb6ebd7b50713942a5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-03_4f205933f49b51cb6ebd7b50713942a5_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1676
- 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:3608

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
37KB

MD5
7af94000be06a4205d3265ccb7283b4e

SHA1
c5998856f735772fc76023d7570217c1e2e1f977

SHA256
5f7b00605670e539584a5f5e0c5ecc39a54cb56619bc41aed249414cee506dee

SHA512
b0c6d62a625cc4ceba7d2dfaaacc27c16dfb72cd49e28af37c3fd0a7d388b0012b452948e1e44a941a880c22a93c9aea8258fc1cc73f500115446ed29790f007

Download Submit
memory/1676-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1676-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1676-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/1676-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1676-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3608-21-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3608-20-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/3608-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download