Analysis
- max time kernel
142s - max time network
103s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system - submitted
14/10/2024, 12:56
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20241010-en
General
- Target file.exe
- Size 6.4MB
- Sample241014-p6cslsweqf
- SHA256 20061bce629f4e86cb50cb6464e28b3ddd2d0a31be41a5962e2cf439386ac730
- MD5 e1c02bdd27200a2881dd2883ecfc9844
- SHA1 a3698b7ce84b65c7e851ab34e2e13e712f4c2c48
- SHA512 9334aa6f537957e5fc66734fad25c1eebec63d014fa1d0fa4ed441b94a346b0773ad3a08b78d9072e869495b31e9693a8f5f808f8808511a39ddea9958529da6
- SSDEEP 49152:uQL/LrSL9zmV9/3ZskRWT3PQYSUrxr1KbhzLWSYvIfPMcFFVliyCWrbQoYQBRy+D:u1ZmF63PQYSixJKZ4v
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detects CryptBot payload 1 IoCs
CryptBot is a C++ stealer distributed widely in bundle with other software.
resource yara_rule behavioral2/memory/2736-0-0x0000000069CC0000-0x000000006A377000-memory.dmp family_cryptbot_v3 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation file.exe - Executes dropped EXE 3 IoCs
pid Process 1636 service123.exe 2484 service123.exe 1116 service123.exe - Loads dropped DLL 3 IoCs
pid Process 1636 service123.exe 2484 service123.exe 1116 service123.exe - Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language service123.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language file.exe - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 file.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString file.exe - Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 5072 schtasks.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2736 wrote to memory of 1636 2736 file.exe 88 PID 2736 wrote to memory of 1636 2736 file.exe 88 PID 2736 wrote to memory of 1636 2736 file.exe 88 PID 2736 wrote to memory of 5072 2736 file.exe 89 PID 2736 wrote to memory of 5072 2736 file.exe 89 PID 2736 wrote to memory of 5072 2736 file.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2736 -
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:1636
-
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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 /f2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:5072
-
-
C:\Users\Admin\AppData\Local\Temp\service123.exeC:\Users\Admin\AppData\Local\Temp\/service123.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2484
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C:\Users\Admin\AppData\Local\Temp\service123.exeC:\Users\Admin\AppData\Local\Temp\/service123.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1116