Analysis
- max time kernel
135s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20250217-en - resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system - submitted
26/02/2025, 04:30
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
r250205113R56_pdf_30KB_.exe
Resource
win7-20240729-en
2 signatures
150 seconds
General
- Target r250205113R56_pdf_30KB_.exe
- Size 30KB
- Sample250226-e42nvayps2
- SHA256 d2e44e6691b0ae8188e44eba55e21e3dda24cee85d4bc5289b0aaf1e8f1b08bb
- MD5 596f94dfdc32ccdbe93a07a8dcbaf00e
- SHA1 c36ff6b74eeae4126c77fab7e8364eac43d78ab1
- SHA512 2dcea748c650467f04127dfb425b68ef6c2c2647f468618580f823296caf72c5a47cafb555c14777813933ce6b4606cd695fcbabc83abe41930c4e6277f528ff
- SSDEEP 384:TnKzhTp1MpbzFXkuJsMu+VWcJXejBWRevqvWG/SfCLArVCopNFyMDNNRS7E9aqoV:TMhTnMB5keu+sI0uWMWsonmMaqguB8
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
-
darkcloud
Credentials
-
Protocol
ftp
-
Host
@StrFtpServer
-
Port
21
-
Username
@StrFtpUser
-
Password
@StrFtpPass
Signatures
- Darkcloud family
- Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
description pid Process procid_target PID 4732 created 3456 4732 r250205113R56_pdf_30KB_.exe 56 - Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TypeName.vbs r250205113R56_pdf_30KB_.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4732 set thread context of 4336 4732 r250205113R56_pdf_30KB_.exe 95 - 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language r250205113R56_pdf_30KB_.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language InstallUtil.exe - Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 4732 r250205113R56_pdf_30KB_.exe 4732 r250205113R56_pdf_30KB_.exe 4732 r250205113R56_pdf_30KB_.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4732 r250205113R56_pdf_30KB_.exe Token: SeDebugPrivilege 4732 r250205113R56_pdf_30KB_.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4336 InstallUtil.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4732 wrote to memory of 4336 4732 r250205113R56_pdf_30KB_.exe 95 PID 4732 wrote to memory of 4336 4732 r250205113R56_pdf_30KB_.exe 95 PID 4732 wrote to memory of 4336 4732 r250205113R56_pdf_30KB_.exe 95 PID 4732 wrote to memory of 4336 4732 r250205113R56_pdf_30KB_.exe 95 PID 4732 wrote to memory of 4336 4732 r250205113R56_pdf_30KB_.exe 95 PID 4732 wrote to memory of 4336 4732 r250205113R56_pdf_30KB_.exe 95 PID 4732 wrote to memory of 4336 4732 r250205113R56_pdf_30KB_.exe 95 PID 4732 wrote to memory of 4336 4732 r250205113R56_pdf_30KB_.exe 95
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3456
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C:\Users\Admin\AppData\Local\Temp\r250205113R56_pdf_30KB_.exe"C:\Users\Admin\AppData\Local\Temp\r250205113R56_pdf_30KB_.exe"2⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4732
-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:4336
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