Analysis
- max time kernel
149s - max time network
152s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
23/09/2021, 09:07
Static task
static1
Behavioral task
behavioral1
Sample
8fdf6032932fa1a0c9b0fd342ee8bee1.exe
Resource
win7v20210408
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
8fdf6032932fa1a0c9b0fd342ee8bee1.exe
Resource
win10-en-20210920
windows10_x64
0 signatures
0 seconds
General
- Target 8fdf6032932fa1a0c9b0fd342ee8bee1.exe
- Size 1.1MB
- Sample210923-k3bc6aeac8
- SHA256 ec0627ef1feef5903f5771bdb6df060a295af132e90ed023f2e1ad14d5ffb40b
- MD5 8fdf6032932fa1a0c9b0fd342ee8bee1
- SHA1 5b939ccc5f0eaf36dd38915af1da00065940cf70
- SHA512 0d74c116728fb3d40a49bd0ee7658ac0f5984a2bf5fe180bd36714db15534dc4a3148ba710360138e0032bc149423170b6a3e2808d368a2c0d3e51365236df8e
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Detect Neshta Payload 3 IoCs
resource yara_rule behavioral2/memory/1020-126-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta behavioral2/memory/1020-127-0x00000000004080E4-mapping.dmp family_neshta behavioral2/memory/1020-130-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta - Modifies system executable filetype association 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" vbc.exe - Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
- Uses the VBS compiler for execution 1 TTPs
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2392 set thread context of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 - Drops file in Program Files directory 53 IoCs
description ioc Process File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE vbc.exe File opened for modification C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOF5E2~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE vbc.exe File opened for modification C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE vbc.exe File opened for modification C:\PROGRA~2\INTERN~1\iexplore.exe vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\setup_wm.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmprph.exe vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpshare.exe vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~3.EXE vbc.exe File opened for modification C:\PROGRA~2\INTERN~1\ielowutil.exe vbc.exe File opened for modification C:\PROGRA~2\WINDOW~2\wab.exe vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpconfig.exe vbc.exe File opened for modification C:\PROGRA~2\WI8A19~1\ImagingDevices.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE vbc.exe File opened for modification C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE vbc.exe File opened for modification C:\PROGRA~2\INTERN~1\ExtExport.exe vbc.exe File opened for modification C:\PROGRA~2\WINDOW~2\wabmig.exe vbc.exe File opened for modification C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe vbc.exe File opened for modification C:\PROGRA~2\MOZILL~1\UNINST~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GO664E~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\DISABL~1.EXE vbc.exe File opened for modification C:\PROGRA~2\INTERN~1\ieinstal.exe vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmplayer.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~2\WinMail.exe vbc.exe File opened for modification C:\PROGRA~3\PACKAG~1\{F4220~1\VC_RED~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\armsvc.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~4.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOBD5D~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~2.EXE vbc.exe File opened for modification C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmlaunch.exe vbc.exe File opened for modification C:\PROGRA~2\WINDOW~4\ACCESS~1\wordpad.exe vbc.exe - Drops file in Windows directory 1 IoCs
description ioc Process File opened for modification C:\Windows\svchost.com vbc.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 3500 schtasks.exe - Modifies registry class 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" vbc.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe - Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 2392 wrote to memory of 3500 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 70 PID 2392 wrote to memory of 3500 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 70 PID 2392 wrote to memory of 3500 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 70 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72 PID 2392 wrote to memory of 1020 2392 8fdf6032932fa1a0c9b0fd342ee8bee1.exe 72
Processes
-
C:\Users\Admin\AppData\Local\Temp\8fdf6032932fa1a0c9b0fd342ee8bee1.exe"C:\Users\Admin\AppData\Local\Temp\8fdf6032932fa1a0c9b0fd342ee8bee1.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2392 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WKhqxqLdmqoS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2C31.tmp"2⤵
- Creates scheduled task(s)
PID:3500
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
PID:1020
-