Analysis
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max time kernel
130s -
max time network
149s -
platform
windows10_x64 -
resource
win10-en -
submitted
17-09-2021 21:31
Static task
static1
Behavioral task
behavioral1
Sample
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe
Resource
win10-en
General
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Target
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe
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Size
894KB
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MD5
66ce1420280eceebeab924165f28b7bb
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SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4
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SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
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SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
Malware Config
Signatures
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Detect Neshta Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1840-127-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta behavioral1/memory/1840-128-0x00000000004080E4-mapping.dmp family_neshta behavioral1/memory/1840-131-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
vbc.exedescription 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.
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Looks for VirtualBox Guest Additions in registry 2 TTPs
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Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe -
Uses the VBS compiler for execution 1 TTPs
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Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exedescription ioc process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exedescription pid process target process PID 3356 set thread context of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe -
Drops file in Program Files directory 55 IoCs
Processes:
vbc.exedescription ioc process 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\Google\Update\1335~1.452\GOOGLE~3.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1335~1.452\GOF5E2~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~2\wabmig.exe vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpshare.exe vbc.exe File opened for modification C:\PROGRA~2\WINDOW~4\ACCESS~1\wordpad.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~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\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\COMMON~1\MICROS~1\MSInfo\msinfo32.exe vbc.exe File opened for modification C:\PROGRA~2\INTERN~1\ieinstal.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\WOW_HE~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\INTERN~1\iexplore.exe vbc.exe File opened for modification C:\PROGRA~2\WINDOW~2\wab.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~2\WI54FB~1\wmlaunch.exe vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1335~1.452\GOBD5D~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmplayer.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\Google\Temp\GUM1942.tmp\GOFB2B~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\Adobe\ACROBA~1\Reader\AcroRd32.exe vbc.exe File opened for modification C:\PROGRA~2\INTERN~1\ExtExport.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\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\Adobe\ARM\1.0\AdobeARM.exe vbc.exe File opened for modification C:\PROGRA~2\WINDOW~2\WinMail.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\Google\Update\1335~1.452\GOOGLE~2.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpconfig.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\Google\Update\1335~1.452\GOOGLE~1.EXE vbc.exe File opened for modification C:\PROGRA~2\MOZILL~1\UNINST~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WI8A19~1\ImagingDevices.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\COMMON~1\Adobe\ARM\1.0\armsvc.exe vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~4.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1335~1.452\GO664E~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmprph.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\MOZILL~1\MAINTE~1.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\INTERN~1\ielowutil.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\READER~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1335~1.452\GOFB2B~1.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\ADOBEC~1.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~2\WI54FB~1\setup_wm.exe vbc.exe File opened for modification C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE vbc.exe -
Drops file in Windows directory 1 IoCs
Processes:
vbc.exedescription 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.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies registry class 1 IoCs
Processes:
vbc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" vbc.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exepid process 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exedescription pid process Token: SeDebugPrivilege 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exedescription pid process target process PID 3356 wrote to memory of 1612 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe schtasks.exe PID 3356 wrote to memory of 1612 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe schtasks.exe PID 3356 wrote to memory of 1612 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe schtasks.exe PID 3356 wrote to memory of 1740 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1740 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1740 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe PID 3356 wrote to memory of 1840 3356 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe"C:\Users\Admin\AppData\Local\Temp\56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3356 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PaJrxje" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE327.tmp"2⤵
- Creates scheduled task(s)
PID:1612 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵PID:1740
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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:1840
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\PaJrxje.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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memory/1612-126-0x0000000000000000-mapping.dmp
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memory/1840-131-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1840-128-0x00000000004080E4-mapping.dmp
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memory/1840-127-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/3356-122-0x0000000007040000-0x0000000007041000-memory.dmpFilesize
4KB
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memory/3356-115-0x0000000000340000-0x0000000000341000-memory.dmpFilesize
4KB
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memory/3356-123-0x0000000007530000-0x00000000075D4000-memory.dmpFilesize
656KB
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memory/3356-124-0x0000000009CA0000-0x0000000009D20000-memory.dmpFilesize
512KB
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memory/3356-125-0x000000000CE90000-0x000000000CE91000-memory.dmpFilesize
4KB
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memory/3356-121-0x0000000004E90000-0x0000000004E97000-memory.dmpFilesize
28KB
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memory/3356-120-0x0000000004C00000-0x0000000004C01000-memory.dmpFilesize
4KB
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memory/3356-119-0x0000000004C80000-0x0000000004C81000-memory.dmpFilesize
4KB
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memory/3356-118-0x0000000004CE0000-0x0000000004CE1000-memory.dmpFilesize
4KB
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memory/3356-117-0x0000000005140000-0x0000000005141000-memory.dmpFilesize
4KB