5550364de8c03d84e5da6a30e6ec5549ad8d117f8391e304389e10f6077a187c

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
19-09-2024 05:30

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General

Target

2024-09-19_656ddb7a54d76c99aa4fa8208cd4ecb7_cryptolocker.exe
Size

53KB
MD5

656ddb7a54d76c99aa4fa8208cd4ecb7
SHA1

3d4805dbdf15ebe8e2eaa923c1f9b79da50be2d5
SHA256

5550364de8c03d84e5da6a30e6ec5549ad8d117f8391e304389e10f6077a187c
SHA512

9c0a81de3461582aaea61e76140067c6aecf8691f30d0049a9885787b686ee65fc00e81bde8bff2338bd34fa53272feb7ff6240a7a5e4fd2ad6344232fbb4542
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOmW:z6QFElP6n+gKmddpMOtEvwDpj31imW

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	2024-09-19_656ddb7a54d76c99aa4fa8208cd4ecb7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3644	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4488-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023390-13.dat	upx
behavioral2/memory/4488-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3644-26-0x0000000000500000-0x0000000000510000-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	2024-09-19_656ddb7a54d76c99aa4fa8208cd4ecb7_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 4488 wrote to memory of 3644	4488	2024-09-19_656ddb7a54d76c99aa4fa8208cd4ecb7_cryptolocker.exe	82
PID 4488 wrote to memory of 3644	4488	2024-09-19_656ddb7a54d76c99aa4fa8208cd4ecb7_cryptolocker.exe	82
PID 4488 wrote to memory of 3644	4488	2024-09-19_656ddb7a54d76c99aa4fa8208cd4ecb7_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_656ddb7a54d76c99aa4fa8208cd4ecb7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_656ddb7a54d76c99aa4fa8208cd4ecb7_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4488
- 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:3644

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
54KB

MD5
7c704337f0bfaf1e71e2c56f3ceefd07

SHA1
a29e26b9dbb96798178f637af5410211d9bbbc25

SHA256
483e2af2c15ed73da5e6f0fd45af8678c1dac904e7d1d50062bbd164932bb967

SHA512
e25d4c4a97908edf4c544e9451703208ea7dfe7b20b4d64ab5ebaaceae1921885dcbf093ced3fe99a36d1f190add64c77a7fa56088794c4b9db1a8d09674aa73

Download Submit
memory/3644-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3644-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3644-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4488-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4488-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4488-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4488-3-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/4488-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download