Analysis
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max time kernel
129s -
max time network
107s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
17-09-2021 13:08
Static task
static1
Behavioral task
behavioral1
Sample
vbc.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
vbc.exe
Resource
win10-en
General
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Target
vbc.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/996-67-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta behavioral1/memory/996-68-0x00000000004080E4-mapping.dmp family_neshta behavioral1/memory/996-70-0x0000000000400000-0x000000000041B000-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:
vbc.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion vbc.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion vbc.exe -
Loads dropped DLL 4 IoCs
Processes:
vbc.exepid process 996 vbc.exe 996 vbc.exe 996 vbc.exe 996 vbc.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:
vbc.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum vbc.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 vbc.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
vbc.exedescription pid process target process PID 1804 set thread context of 996 1804 vbc.exe vbc.exe -
Drops file in Program Files directory 64 IoCs
Processes:
vbc.exedescription ioc process File opened for modification C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmplayer.exe vbc.exe File opened for modification C:\PROGRA~2\WI4223~1\sidebar.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\MICROS~1\OFFICE14\FLTLDR.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpshare.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.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\MICROS~1\Office14\MSTORDB.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE vbc.exe File opened for modification C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\Eula.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.exe vbc.exe File opened for modification C:\PROGRA~2\MOZILL~1\UNINST~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~1\WinMail.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\PPTICO.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\INTERN~1\ieinstal.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\misc.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\SELFCERT.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~1\wab.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\WMPDMC.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.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\MICROS~1\Office14\INFOPATH.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmlaunch.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.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\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmprph.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\MICROS~1\Office14\BCSSync.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~2\MICROS~1\Office14\MSTORE.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~4\ImagingDevices.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\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.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\MICROS~1\Office14\CLVIEW.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\OIS.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\DW\DWTRIG20.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Temp\GUMFBCB.tmp\GOFB2B~1.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\INTERN~1\ielowutil.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 8 IoCs
Processes:
vbc.exepid process 1804 vbc.exe 1804 vbc.exe 1804 vbc.exe 1804 vbc.exe 1804 vbc.exe 1804 vbc.exe 1804 vbc.exe 1804 vbc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
vbc.exedescription pid process Token: SeDebugPrivilege 1804 vbc.exe -
Suspicious use of WriteProcessMemory 28 IoCs
Processes:
vbc.exedescription pid process target process PID 1804 wrote to memory of 1500 1804 vbc.exe schtasks.exe PID 1804 wrote to memory of 1500 1804 vbc.exe schtasks.exe PID 1804 wrote to memory of 1500 1804 vbc.exe schtasks.exe PID 1804 wrote to memory of 1500 1804 vbc.exe schtasks.exe PID 1804 wrote to memory of 1636 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1636 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1636 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1636 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1624 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1624 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1624 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1624 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1568 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1568 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1568 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 1568 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe PID 1804 wrote to memory of 996 1804 vbc.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.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:1804 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PaJrxje" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9137.tmp"2⤵
- Creates scheduled task(s)
PID:1500 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵PID:1636
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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⤵PID:1624
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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⤵PID:1568
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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
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
PID:996
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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\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXEMD5
9e2b9928c89a9d0da1d3e8f4bd96afa7
SHA1ec66cda99f44b62470c6930e5afda061579cde35
SHA2568899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043
SHA5122ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156
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\PROGRA~2\Google\Temp\GUMFBCB.tmp\GOFB2B~1.EXEMD5
583ff3367e050c4d62bc03516473b40a
SHA16aa1d26352b78310e711884829c35a69ed1bf0f9
SHA2566b63f8dd47d8b3baa71b6cd205d428861b96bf09cf479071e75ddd23f97c0146
SHA512e9bdd5cc2e29db48cc524488fbadb08e808f17f6e18fa595cfebae229c94f2547079e52a2ada214169577b89b2ffbef424729cd90acdea3774f5c76aec192be0
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\PROGRA~2\Google\Update\1335~1.452\GOFB2B~1.EXEMD5
583ff3367e050c4d62bc03516473b40a
SHA16aa1d26352b78310e711884829c35a69ed1bf0f9
SHA2566b63f8dd47d8b3baa71b6cd205d428861b96bf09cf479071e75ddd23f97c0146
SHA512e9bdd5cc2e29db48cc524488fbadb08e808f17f6e18fa595cfebae229c94f2547079e52a2ada214169577b89b2ffbef424729cd90acdea3774f5c76aec192be0
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\Users\Admin\AppData\Roaming\PaJrxje.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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memory/996-70-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/996-67-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/996-68-0x00000000004080E4-mapping.dmp
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memory/996-69-0x0000000075801000-0x0000000075803000-memory.dmpFilesize
8KB
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memory/1500-66-0x0000000000000000-mapping.dmp
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memory/1804-60-0x0000000000ED0000-0x0000000000ED1000-memory.dmpFilesize
4KB
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memory/1804-65-0x0000000004DF0000-0x0000000004E70000-memory.dmpFilesize
512KB
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memory/1804-64-0x00000000055B0000-0x0000000005654000-memory.dmpFilesize
656KB
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memory/1804-63-0x00000000003A0000-0x00000000003A7000-memory.dmpFilesize
28KB
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memory/1804-62-0x0000000004DB0000-0x0000000004DB1000-memory.dmpFilesize
4KB