Analysis
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max time kernel
122s -
max time network
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platform
windows10_x64 -
resource
win10v20210408 -
submitted
08-05-2021 12:16
Static task
static1
Behavioral task
behavioral1
Sample
AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe
Resource
win7v20210408
General
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Target
AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe
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Size
444KB
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MD5
fd442753c3895d868eed72f7854e2fba
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SHA1
477dc12f213dd05a15b61207926b478d3a0d04c7
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SHA256
aadde71205336ccdd048f0b5029becbbcd03e741045f406b2fa819b909809202
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SHA512
1a7ff91196019abe9dfa93bfaca299ecd87693ef173560951b4d55f9d0c66355535bef724de26865205419e7638e57c762e332d7eff85187e9695f0a92e1d0c2
Malware Config
Signatures
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CrypVault
Ransomware family which makes encrypted files look like they have been quarantined by AV.
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3868 3596 cmd.exe 15 -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 3156 bcdedit.exe 3148 bcdedit.exe -
Executes dropped EXE 3 IoCs
pid Process 3044 7za.exe 3716 2D4F861D8D.exe 996 2D4F861D8D.exe -
resource yara_rule behavioral2/memory/996-129-0x0000000000400000-0x0000000000E28000-memory.dmp upx behavioral2/memory/996-133-0x0000000000400000-0x000000000041A000-memory.dmp upx -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VAULT.hta 2D4F861D8D.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VAULT.hta 2D4F861D8D.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3716 set thread context of 996 3716 2D4F861D8D.exe 91 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1072 vssadmin.exe -
Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings 2D4F861D8D.exe -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 1040 WINWORD.EXE 1040 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3716 2D4F861D8D.exe 3716 2D4F861D8D.exe 996 2D4F861D8D.exe 996 2D4F861D8D.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeImpersonatePrivilege 996 2D4F861D8D.exe Token: SeTcbPrivilege 996 2D4F861D8D.exe Token: SeChangeNotifyPrivilege 996 2D4F861D8D.exe Token: SeCreateTokenPrivilege 996 2D4F861D8D.exe Token: SeBackupPrivilege 996 2D4F861D8D.exe Token: SeRestorePrivilege 996 2D4F861D8D.exe Token: SeIncreaseQuotaPrivilege 996 2D4F861D8D.exe Token: SeAssignPrimaryTokenPrivilege 996 2D4F861D8D.exe Token: SeIncreaseQuotaPrivilege 1684 WMIC.exe Token: SeSecurityPrivilege 1684 WMIC.exe Token: SeTakeOwnershipPrivilege 1684 WMIC.exe Token: SeLoadDriverPrivilege 1684 WMIC.exe Token: SeSystemProfilePrivilege 1684 WMIC.exe Token: SeSystemtimePrivilege 1684 WMIC.exe Token: SeProfSingleProcessPrivilege 1684 WMIC.exe Token: SeIncBasePriorityPrivilege 1684 WMIC.exe Token: SeCreatePagefilePrivilege 1684 WMIC.exe Token: SeBackupPrivilege 1684 WMIC.exe Token: SeRestorePrivilege 1684 WMIC.exe Token: SeShutdownPrivilege 1684 WMIC.exe Token: SeDebugPrivilege 1684 WMIC.exe Token: SeSystemEnvironmentPrivilege 1684 WMIC.exe Token: SeRemoteShutdownPrivilege 1684 WMIC.exe Token: SeUndockPrivilege 1684 WMIC.exe Token: SeManageVolumePrivilege 1684 WMIC.exe Token: 33 1684 WMIC.exe Token: 34 1684 WMIC.exe Token: 35 1684 WMIC.exe Token: 36 1684 WMIC.exe Token: SeIncreaseQuotaPrivilege 1684 WMIC.exe Token: SeSecurityPrivilege 1684 WMIC.exe Token: SeTakeOwnershipPrivilege 1684 WMIC.exe Token: SeLoadDriverPrivilege 1684 WMIC.exe Token: SeSystemProfilePrivilege 1684 WMIC.exe Token: SeSystemtimePrivilege 1684 WMIC.exe Token: SeProfSingleProcessPrivilege 1684 WMIC.exe Token: SeIncBasePriorityPrivilege 1684 WMIC.exe Token: SeCreatePagefilePrivilege 1684 WMIC.exe Token: SeBackupPrivilege 1684 WMIC.exe Token: SeRestorePrivilege 1684 WMIC.exe Token: SeShutdownPrivilege 1684 WMIC.exe Token: SeDebugPrivilege 1684 WMIC.exe Token: SeSystemEnvironmentPrivilege 1684 WMIC.exe Token: SeRemoteShutdownPrivilege 1684 WMIC.exe Token: SeUndockPrivilege 1684 WMIC.exe Token: SeManageVolumePrivilege 1684 WMIC.exe Token: 33 1684 WMIC.exe Token: 34 1684 WMIC.exe Token: 35 1684 WMIC.exe Token: 36 1684 WMIC.exe Token: SeBackupPrivilege 3256 vssvc.exe Token: SeRestorePrivilege 3256 vssvc.exe Token: SeAuditPrivilege 3256 vssvc.exe Token: SeImpersonatePrivilege 996 2D4F861D8D.exe Token: SeTcbPrivilege 996 2D4F861D8D.exe Token: SeChangeNotifyPrivilege 996 2D4F861D8D.exe Token: SeCreateTokenPrivilege 996 2D4F861D8D.exe Token: SeBackupPrivilege 996 2D4F861D8D.exe Token: SeRestorePrivilege 996 2D4F861D8D.exe Token: SeIncreaseQuotaPrivilege 996 2D4F861D8D.exe Token: SeAssignPrimaryTokenPrivilege 996 2D4F861D8D.exe Token: SeImpersonatePrivilege 996 2D4F861D8D.exe Token: SeTcbPrivilege 996 2D4F861D8D.exe Token: SeChangeNotifyPrivilege 996 2D4F861D8D.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3716 2D4F861D8D.exe 3716 2D4F861D8D.exe 1040 WINWORD.EXE 1040 WINWORD.EXE 1040 WINWORD.EXE 1040 WINWORD.EXE -
Suspicious use of WriteProcessMemory 49 IoCs
description pid Process procid_target PID 912 wrote to memory of 2976 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 75 PID 912 wrote to memory of 2976 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 75 PID 912 wrote to memory of 2976 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 75 PID 912 wrote to memory of 1004 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 77 PID 912 wrote to memory of 1004 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 77 PID 912 wrote to memory of 1004 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 77 PID 912 wrote to memory of 3036 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 79 PID 912 wrote to memory of 3036 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 79 PID 912 wrote to memory of 3036 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 79 PID 912 wrote to memory of 3044 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 81 PID 912 wrote to memory of 3044 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 81 PID 912 wrote to memory of 3044 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 81 PID 912 wrote to memory of 1132 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 83 PID 912 wrote to memory of 1132 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 83 PID 912 wrote to memory of 1132 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 83 PID 912 wrote to memory of 1040 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 85 PID 912 wrote to memory of 1040 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 85 PID 912 wrote to memory of 3888 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 86 PID 912 wrote to memory of 3888 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 86 PID 912 wrote to memory of 3888 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 86 PID 912 wrote to memory of 3716 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 88 PID 912 wrote to memory of 3716 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 88 PID 912 wrote to memory of 3716 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 88 PID 912 wrote to memory of 3664 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 89 PID 912 wrote to memory of 3664 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 89 PID 912 wrote to memory of 3664 912 AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe 89 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 3716 wrote to memory of 996 3716 2D4F861D8D.exe 91 PID 996 wrote to memory of 1960 996 2D4F861D8D.exe 92 PID 996 wrote to memory of 1960 996 2D4F861D8D.exe 92 PID 996 wrote to memory of 1960 996 2D4F861D8D.exe 92 PID 996 wrote to memory of 1684 996 2D4F861D8D.exe 93 PID 996 wrote to memory of 1684 996 2D4F861D8D.exe 93 PID 996 wrote to memory of 1684 996 2D4F861D8D.exe 93 PID 3868 wrote to memory of 1072 3868 cmd.exe 98 PID 3868 wrote to memory of 1072 3868 cmd.exe 98 PID 3868 wrote to memory of 3156 3868 cmd.exe 101 PID 3868 wrote to memory of 3156 3868 cmd.exe 101 PID 3868 wrote to memory of 3148 3868 cmd.exe 102 PID 3868 wrote to memory of 3148 3868 cmd.exe 102
Processes
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C:\Users\Admin\AppData\Local\Temp\AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe"C:\Users\Admin\AppData\Local\Temp\AADDE71205336CCDD048F0B5029BECBBCD03E741045F4.exe"1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:912 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c echo 2D4F861D8DCF8C8F2⤵PID:2976
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c ren "C:\Users\Admin\AppData\Local\Temp\CF8C8F" 7za.exe2⤵PID:1004
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c echo 2D4F861D8DCF8C8F2⤵PID:3036
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C:\Users\Admin\AppData\Local\Temp\7za.exe"C:\Users\Admin\AppData\Local\Temp\7za.exe" e "C:\Users\Admin\AppData\Local\Temp\2D4F861D8D" -y -p2D4F861D8D2⤵
- Executes dropped EXE
PID:3044
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c echo 2D4F861D8DCF8C8F2⤵PID:1132
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C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\2D4F861D8D.doc" /o ""2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1040
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c echo 2D4F861D8DCF8C8F2⤵PID:3888
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C:\Users\Admin\AppData\Local\Temp\2D4F861D8D.exe"C:\Users\Admin\AppData\Local\Temp\2D4F861D8D.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3716 -
C:\Users\Admin\AppData\Local\Temp\2D4F861D8D.exe"C:\Users\Admin\AppData\Local\Temp\2D4F861D8D.exe"3⤵
- Executes dropped EXE
- Drops startup file
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:996 -
C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\VAULT.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}4⤵PID:1960
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C:\Windows\SysWOW64\wbem\WMIC.exe"C:\Windows\System32\wbem\WMIC.exe" process call create "cmd.exe /c vssadmin.exe delete shadows /all /quiet & bcdedit.exe /set {default} recoveryenabled no & bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures"4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1684
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c echo 2D4F861D8DCF8C8F2⤵PID:3664
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C:\Windows\system32\cmd.execmd.exe /c vssadmin.exe delete shadows /all /quiet & bcdedit.exe /set {default} recoveryenabled no & bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3868 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:1072
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C:\Windows\system32\bcdedit.exebcdedit.exe /set {default} recoveryenabled no2⤵
- Modifies boot configuration data using bcdedit
PID:3156
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C:\Windows\system32\bcdedit.exebcdedit.exe /set {default} bootstatuspolicy ignoreallfailures2⤵
- Modifies boot configuration data using bcdedit
PID:3148
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3256