cryptbot | 3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7

General

Target
3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe
Size 6.3MB
Sample240927-bkfeqazfnc
SHA256 3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7
MD5 eee6d15917d8a9aa01288580d8cb5541
SHA1 7827d50eab278625ce256d7ec5568a82b8c9edfe
SHA512 68647cad68930d344675bb30a11a7b18b8a59a83c2958f2b4b68d9e8adc3b95bf403a8e00c76a3db889bedf6f6742b6c05081e8ba5e5f77bb71646a959c40571
SSDEEP 98304:+HwhEenyWS9+46B3fgDmQ9NQVapitqG6OmblZLan:6cEcHl4Gv2N0akEG6L5Van
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

cryptbot discovery spyware stealer

Malware Config

Extracted

Family

cryptbot

C2

thirtvf13sr.top

Attributes

url_path
/v1/upload.php

Signatures

CryptBot
CryptBot is a C++ stealer distributed widely in bundle with other software.
spyware stealer cryptbot

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	3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe

Executes dropped EXE 3 IoCs

pid	Process
824	service123.exe
2480	service123.exe
2864	service123.exe

Loads dropped DLL 3 IoCs

pid	Process
824	service123.exe
2480	service123.exe
2864	service123.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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 3 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	3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	service123.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4640	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3332 wrote to memory of 824	3332	3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe	90
PID 3332 wrote to memory of 824	3332	3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe	90
PID 3332 wrote to memory of 824	3332	3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe	90
PID 3332 wrote to memory of 4640	3332	3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe	91
PID 3332 wrote to memory of 4640	3332	3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe	91
PID 3332 wrote to memory of 4640	3332	3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe	91

C:\Users\Admin\AppData\Local\Temp\3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe
"C:\Users\Admin\AppData\Local\Temp\3949006957ea55af22ff7e57fc95f3bcd9cde5ffe597e76a3ba22fdcb67314f7.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:3332
- C:\Users\Admin\AppData\Local\Temp\service123.exe
  "C:\Users\Admin\AppData\Local\Temp\service123.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:824
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /tn "ServiceData4" /tr "C:\Users\Admin\AppData\Local\Temp\/service123.exe" /st 00:01 /du 9800:59 /sc once /ri 1 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4640

C:\Users\Admin\AppData\Local\Temp\service123.exe
C:\Users\Admin\AppData\Local\Temp\/service123.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2480

C:\Users\Admin\AppData\Local\Temp\service123.exe
C:\Users\Admin\AppData\Local\Temp\/service123.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2864