cryptbot | d6a055bee4a39f5879ff522099df86cd0a0001228cac589b3f07449a5a822fef

General

Target
Set-up.exe
Size 6.3MB
Sample240927-13c5ravblc
SHA256 d6a055bee4a39f5879ff522099df86cd0a0001228cac589b3f07449a5a822fef
MD5 ff8b81c5bdbb09987a4ed216ae0010c2
SHA1 1d5edf417a676e8e04a69dd94dac6a2a934cdfa6
SHA512 9bad1fed2170e923e65f57e8ccbbfbe33fd8f01423469fa8e3d7a4c93c8c97fb84ea98df33901a11fdf8915dc7d9955046faf5c4f9ccf38d8606ccc2b91615fe
SSDEEP 49152:4pVubXslypSy5wT96CHhbhiwOfHLaorKt5LJ8Vx2jaV9hIaDzNZMV/tIsQ:/jazH7iwOf/rKt38VC49hIMrMH5Q
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

cryptbot discovery spyware stealer

Malware Config

Extracted

Family

cryptbot

C2

twelvevh12pt.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-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation	Set-up.exe

Executes dropped EXE 3 IoCs

pid	Process
3948	service123.exe
4352	service123.exe
2152	service123.exe

Loads dropped DLL 3 IoCs

pid	Process
3948	service123.exe
4352	service123.exe
2152	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	Set-up.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Set-up.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Set-up.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
4724	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 3948	4984	Set-up.exe	98
PID 4984 wrote to memory of 3948	4984	Set-up.exe	98
PID 4984 wrote to memory of 3948	4984	Set-up.exe	98
PID 4984 wrote to memory of 4724	4984	Set-up.exe	100
PID 4984 wrote to memory of 4724	4984	Set-up.exe	100
PID 4984 wrote to memory of 4724	4984	Set-up.exe	100

C:\Users\Admin\AppData\Local\Temp\Set-up.exe
"C:\Users\Admin\AppData\Local\Temp\Set-up.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4984
- 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:3948
- 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:4724

C:\Users\Admin\AppData\Local\Temp\service123.exe
C:\Users\Admin\AppData\Local\Temp\/service123.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:4352

C:\Users\Admin\AppData\Local\Temp\service123.exe
C:\Users\Admin\AppData\Local\Temp\/service123.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2152