4392461d55c1d6c71b95d8b92b544c8c3260c3e9cfe76f56507b4ac15d8bcad1

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	DB.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Eqlfbn = "C:\\Windows\\SysWOW64\\scrobjc.exe"	DB.EXE

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	scrobjc.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	DB.EXE

Executes dropped EXE 8 IoCs

pid	Process
1856	AV.EXE
2056	AV2.EXE
1168	DB.EXE
2676	EN.EXE
2484	SB.EXE
2776	scrobjc.exe
1576	hP17766BiOlL17766.exe
2176	RtlDriver32.exe

Loads dropped DLL 14 IoCs

pid	Process
764	Ana.exe
764	Ana.exe
764	Ana.exe
764	Ana.exe
764	Ana.exe
764	Ana.exe
764	Ana.exe
764	Ana.exe
764	Ana.exe
1168	DB.EXE
1168	DB.EXE
2056	AV2.EXE
2056	AV2.EXE
1856	AV.EXE

UPX packed file 11 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral3/files/0x002a000000015d4c-17.dat	upx
behavioral3/files/0x0006000000016da4-35.dat	upx
behavioral3/memory/1168-26-0x0000000000260000-0x00000000002F3000-memory.dmp	upx
behavioral3/memory/1168-46-0x0000000000260000-0x00000000002F3000-memory.dmp	upx
behavioral3/memory/1168-45-0x0000000000400000-0x0000000000445000-memory.dmp	upx
behavioral3/memory/1168-44-0x0000000000260000-0x00000000002F3000-memory.dmp	upx
behavioral3/memory/2676-71-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral3/memory/1168-72-0x0000000000260000-0x00000000002F3000-memory.dmp	upx
behavioral3/memory/1168-90-0x0000000000260000-0x00000000002F3000-memory.dmp	upx
behavioral3/memory/2056-103-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral3/memory/2056-180-0x0000000000400000-0x00000000004C3000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\{56321-2157-3235-3211} = "C:\\Users\\Admin\\AppData\\Roaming\\RtlDriver32.exe"	AV.EXE

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	DB.EXE

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\physicaldrive0	SB.EXE

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\scrobjc.exe	DB.EXE
File opened for modification	C:\Windows\SysWOW64\scrobjc.exe	DB.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

Command and Scripting Interpreter

T1059

pid	Process
2680	ipconfig.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\30530A0C86EDB1CD5A2A5FE37EF3BF28E69BE16D	AV.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\30530A0C86EDB1CD5A2A5FE37EF3BF28E69BE16D\Blob = 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	AV.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1168	DB.EXE
1168	DB.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE
2056	AV2.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1168	DB.EXE
Token: SeDebugPrivilege	2056	AV2.EXE
Token: SeShutdownPrivilege	2484	SB.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1856	AV.EXE

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1856	AV.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2776	scrobjc.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 764 wrote to memory of 1856	764	Ana.exe	28
PID 764 wrote to memory of 1856	764	Ana.exe	28
PID 764 wrote to memory of 1856	764	Ana.exe	28
PID 764 wrote to memory of 1856	764	Ana.exe	28
PID 764 wrote to memory of 2056	764	Ana.exe	29
PID 764 wrote to memory of 2056	764	Ana.exe	29
PID 764 wrote to memory of 2056	764	Ana.exe	29
PID 764 wrote to memory of 2056	764	Ana.exe	29
PID 764 wrote to memory of 1168	764	Ana.exe	30
PID 764 wrote to memory of 1168	764	Ana.exe	30
PID 764 wrote to memory of 1168	764	Ana.exe	30
PID 764 wrote to memory of 1168	764	Ana.exe	30
PID 764 wrote to memory of 2676	764	Ana.exe	31
PID 764 wrote to memory of 2676	764	Ana.exe	31
PID 764 wrote to memory of 2676	764	Ana.exe	31
PID 764 wrote to memory of 2676	764	Ana.exe	31
PID 764 wrote to memory of 2484	764	Ana.exe	32
PID 764 wrote to memory of 2484	764	Ana.exe	32
PID 764 wrote to memory of 2484	764	Ana.exe	32
PID 764 wrote to memory of 2484	764	Ana.exe	32
PID 1168 wrote to memory of 2776	1168	DB.EXE	34
PID 1168 wrote to memory of 2776	1168	DB.EXE	34
PID 1168 wrote to memory of 2776	1168	DB.EXE	34
PID 1168 wrote to memory of 2776	1168	DB.EXE	34
PID 2776 wrote to memory of 2680	2776	scrobjc.exe	36
PID 2776 wrote to memory of 2680	2776	scrobjc.exe	36
PID 2776 wrote to memory of 2680	2776	scrobjc.exe	36
PID 2776 wrote to memory of 2680	2776	scrobjc.exe	36
PID 1168 wrote to memory of 1296	1168	DB.EXE	38
PID 1168 wrote to memory of 1296	1168	DB.EXE	38
PID 1168 wrote to memory of 1296	1168	DB.EXE	38
PID 1168 wrote to memory of 1296	1168	DB.EXE	38
PID 2056 wrote to memory of 1576	2056	AV2.EXE	42
PID 2056 wrote to memory of 1576	2056	AV2.EXE	42
PID 2056 wrote to memory of 1576	2056	AV2.EXE	42
PID 2056 wrote to memory of 1576	2056	AV2.EXE	42
PID 1856 wrote to memory of 2176	1856	AV.EXE	43
PID 1856 wrote to memory of 2176	1856	AV.EXE	43
PID 1856 wrote to memory of 2176	1856	AV.EXE	43
PID 1856 wrote to memory of 2176	1856	AV.EXE	43

C:\Users\Admin\AppData\Local\Temp\Ana.exe
"C:\Users\Admin\AppData\Local\Temp\Ana.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:764
- C:\Users\Admin\AppData\Local\Temp\AV.EXE
  "C:\Users\Admin\AppData\Local\Temp\AV.EXE"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies system certificate store
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1856
- - C:\Users\Admin\AppData\Roaming\RtlDriver32.exe
    "C:\Users\Admin\AppData\Roaming\RtlDriver32.exe"
    3⤵
    - Executes dropped EXE
    PID:2176
- C:\Users\Admin\AppData\Local\Temp\AV2.EXE
  "C:\Users\Admin\AppData\Local\Temp\AV2.EXE"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2056
- - C:\ProgramData\hP17766BiOlL17766\hP17766BiOlL17766.exe
    "C:\ProgramData\hP17766BiOlL17766\hP17766BiOlL17766.exe" "C:\Users\Admin\AppData\Local\Temp\AV2.EXE"
    3⤵
    - Executes dropped EXE
    PID:1576
- C:\Users\Admin\AppData\Local\Temp\DB.EXE
  "C:\Users\Admin\AppData\Local\Temp\DB.EXE"
  2⤵
  - Adds policy Run key to start application
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks whether UAC is enabled
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1168
- - C:\Windows\SysWOW64\scrobjc.exe
    C:\Windows\SysWOW64\scrobjc.exe
    3⤵
    - Drops file in Drivers directory
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2776
  - - C:\Windows\SysWOW64\ipconfig.exe
      "C:\Windows\system32\ipconfig.exe" /flushdns
      4⤵
      Gathers network information
      PID:2680
- - C:\Windows\SysWOW64\cmd.exe
    /c C:\Users\Admin\AppData\Local\Temp\~unins8400.bat "C:\Users\Admin\AppData\Local\Temp\DB.EXE"
    3⤵
    PID:1296
- C:\Users\Admin\AppData\Local\Temp\EN.EXE
  "C:\Users\Admin\AppData\Local\Temp\EN.EXE"
  2⤵
  - Executes dropped EXE
  PID:2676
- C:\Users\Admin\AppData\Local\Temp\SB.EXE
  "C:\Users\Admin\AppData\Local\Temp\SB.EXE"
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of AdjustPrivilegeToken
  PID:2484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

Pre-OS Boot

T1542

Bootkit

T1542.003

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery