Analysis
- max time kernel
16s - max time network
68s - platform
windows10_x64 - resource
win10v20210408 - submitted
15/07/2021, 17:41
Static task
static1
Behavioral task
behavioral1
Sample
57933BC5C60DE83FDDBC7A2C6522E6481C9E684E342FE.exe
Resource
win7v20210410
General
- Target 57933BC5C60DE83FDDBC7A2C6522E6481C9E684E342FE.exe
- Size 1.2MB
- Sample210715-9fyphbakqs
- SHA256 57933bc5c60de83fddbc7a2c6522e6481c9e684e342fed86a4c38bf08c4a6b0f
- MD5 63533e07c471cf29ce6fc5887e933494
- SHA1 01eea47a0f55b7df7d8275110fa159e5b82be64e
- SHA512 a3ad09374b933b11a26864d931fd5324443f68b15492767c44ad1da826e80f391796e8aeecc210bfd2c7d1facc72462fd3b96aa3a541eacf2a23e44026b820ec
- MD5 SHA1 SHA512
Malware Config
Extracted
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pony
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http://www.ptsinar.co/ymg/apisiylo/gate.php
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payload_url
http://www.ptsinar.co/ymg/apisiylo/shit.exe
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
- Executes dropped EXE 2 IoCs
pid Process 756 Resm1.exe 3116 Resm1.exe - Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Resm1.exe - Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Wine Resm1.exe - Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of web browsers 2 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.
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 756 set thread context of 3116 756 Resm1.exe 77 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious use of AdjustPrivilegeToken 40 IoCs
description pid Process Token: SeImpersonatePrivilege 3116 Resm1.exe Token: SeTcbPrivilege 3116 Resm1.exe Token: SeChangeNotifyPrivilege 3116 Resm1.exe Token: SeCreateTokenPrivilege 3116 Resm1.exe Token: SeBackupPrivilege 3116 Resm1.exe Token: SeRestorePrivilege 3116 Resm1.exe Token: SeIncreaseQuotaPrivilege 3116 Resm1.exe Token: SeAssignPrimaryTokenPrivilege 3116 Resm1.exe Token: SeImpersonatePrivilege 3116 Resm1.exe Token: SeTcbPrivilege 3116 Resm1.exe Token: SeChangeNotifyPrivilege 3116 Resm1.exe Token: SeCreateTokenPrivilege 3116 Resm1.exe Token: SeBackupPrivilege 3116 Resm1.exe Token: SeRestorePrivilege 3116 Resm1.exe Token: SeIncreaseQuotaPrivilege 3116 Resm1.exe Token: SeAssignPrimaryTokenPrivilege 3116 Resm1.exe Token: SeImpersonatePrivilege 3116 Resm1.exe Token: SeTcbPrivilege 3116 Resm1.exe Token: SeChangeNotifyPrivilege 3116 Resm1.exe Token: SeCreateTokenPrivilege 3116 Resm1.exe Token: SeBackupPrivilege 3116 Resm1.exe Token: SeRestorePrivilege 3116 Resm1.exe Token: SeIncreaseQuotaPrivilege 3116 Resm1.exe Token: SeAssignPrimaryTokenPrivilege 3116 Resm1.exe Token: SeImpersonatePrivilege 3116 Resm1.exe Token: SeTcbPrivilege 3116 Resm1.exe Token: SeChangeNotifyPrivilege 3116 Resm1.exe Token: SeCreateTokenPrivilege 3116 Resm1.exe Token: SeBackupPrivilege 3116 Resm1.exe Token: SeRestorePrivilege 3116 Resm1.exe Token: SeIncreaseQuotaPrivilege 3116 Resm1.exe Token: SeAssignPrimaryTokenPrivilege 3116 Resm1.exe Token: SeImpersonatePrivilege 3116 Resm1.exe Token: SeTcbPrivilege 3116 Resm1.exe Token: SeChangeNotifyPrivilege 3116 Resm1.exe Token: SeCreateTokenPrivilege 3116 Resm1.exe Token: SeBackupPrivilege 3116 Resm1.exe Token: SeRestorePrivilege 3116 Resm1.exe Token: SeIncreaseQuotaPrivilege 3116 Resm1.exe Token: SeAssignPrimaryTokenPrivilege 3116 Resm1.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 756 Resm1.exe - Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 804 wrote to memory of 756 804 57933BC5C60DE83FDDBC7A2C6522E6481C9E684E342FE.exe 75 PID 804 wrote to memory of 756 804 57933BC5C60DE83FDDBC7A2C6522E6481C9E684E342FE.exe 75 PID 804 wrote to memory of 756 804 57933BC5C60DE83FDDBC7A2C6522E6481C9E684E342FE.exe 75 PID 756 wrote to memory of 3116 756 Resm1.exe 77 PID 756 wrote to memory of 3116 756 Resm1.exe 77 PID 756 wrote to memory of 3116 756 Resm1.exe 77 PID 756 wrote to memory of 3116 756 Resm1.exe 77 PID 756 wrote to memory of 3116 756 Resm1.exe 77 PID 756 wrote to memory of 3116 756 Resm1.exe 77 PID 756 wrote to memory of 3116 756 Resm1.exe 77 PID 756 wrote to memory of 3116 756 Resm1.exe 77 PID 3116 wrote to memory of 2676 3116 Resm1.exe 78 PID 3116 wrote to memory of 2676 3116 Resm1.exe 78 PID 3116 wrote to memory of 2676 3116 Resm1.exe 78
Processes
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C:\Users\Admin\AppData\Local\Temp\57933BC5C60DE83FDDBC7A2C6522E6481C9E684E342FE.exe"C:\Users\Admin\AppData\Local\Temp\57933BC5C60DE83FDDBC7A2C6522E6481C9E684E342FE.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:804 -
C:\Users\Admin\AppData\Local\Temp\Resm1.exe"C:\Users\Admin\AppData\Local\Temp\Resm1.exe"2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:756 -
C:\Users\Admin\AppData\Local\Temp\Resm1.exe"C:\Users\Admin\AppData\Local\Temp\Resm1.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3116 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\259296984.bat" "C:\Users\Admin\AppData\Local\Temp\Resm1.exe" "4⤵PID:2676
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