e8bd2b27bc9d4f4956c3804b1a446b7f2c79c33420d81d40623aa6bd892a19e0

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13/10/2024, 05:23

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General

Target

2024-10-13_0fcc4f6f436f224b8d4d353ee919553a_cryptolocker.exe
Size

54KB
MD5

0fcc4f6f436f224b8d4d353ee919553a
SHA1

de62ef6fb0531ac3ec2065830da2a81c52bca43b
SHA256

e8bd2b27bc9d4f4956c3804b1a446b7f2c79c33420d81d40623aa6bd892a19e0
SHA512

4a0b922459fa78afe08317ba8eb14a6796b0e8c97575b3eb1cdc01919212b1e1e9d07faadcd5ff0fb778c9ac167375ea1b07b76f23165ce1161f49b9340cbd95
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOkVF:z6QFElP6n+gKmddpMOtEvwDpj31ikVF

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2024-10-13_0fcc4f6f436f224b8d4d353ee919553a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4496	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3668-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000c000000023b1c-13.dat	upx
behavioral2/memory/3668-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4496-25-0x0000000000500000-0x0000000000510000-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	2024-10-13_0fcc4f6f436f224b8d4d353ee919553a_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 3668 wrote to memory of 4496	3668	2024-10-13_0fcc4f6f436f224b8d4d353ee919553a_cryptolocker.exe	85
PID 3668 wrote to memory of 4496	3668	2024-10-13_0fcc4f6f436f224b8d4d353ee919553a_cryptolocker.exe	85
PID 3668 wrote to memory of 4496	3668	2024-10-13_0fcc4f6f436f224b8d4d353ee919553a_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-10-13_0fcc4f6f436f224b8d4d353ee919553a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-13_0fcc4f6f436f224b8d4d353ee919553a_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3668
- 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:4496

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
55KB

MD5
e1d324f6d08ce21d119383a7d3a5e885

SHA1
ab7686be9b6e6197cf0aa4b0ad1cb80c1f08f1b1

SHA256
c78c623eedb92d24dd0acbca11a0e16ca48947c2019620be9f9202a29342c7f1

SHA512
fbe0dd3a334242e67bf551f9d10ce7479b92bafb48b38a1e86db1694e3eb93d48adb0be6ca21647f55a54d05010ec4a5f7d31d54bc00e95361d62adc1e02c20a

Download Submit
memory/3668-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3668-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3668-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3668-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3668-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4496-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download