d996151f4cb4abfd48fb856239ea0e2cc54ba89954586aa07a67135a0e15ad8a

General

Target
f063c197471def0a2e37f80f83197e42.exe
Size 813KB
Sample200704-rcs3vhpma2
SHA256 d996151f4cb4abfd48fb856239ea0e2cc54ba89954586aa07a67135a0e15ad8a
MD5 f063c197471def0a2e37f80f83197e42
SHA1 214f23ed18e75ac0966a0f331a75f34caca97204
SHA512 1e9de46d53ffce989085c101c1b046441cf2b872c4c315d0ad5f92ac869710371ab0636f8103ef0fa09edf1dccf203886ba4d145d54b4606afffd34d9478bc5f
MD5 SHA1 SHA512

Score

8^/10

Malware Config

Signatures

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
2428	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
780	WerFault.exe
2304	svchost.exe
2304	svchost.exe
2304	svchost.exe
2304	svchost.exe

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\doc = "C:\\ProgramData\\nsupdater.exe"	f063c197471def0a2e37f80f83197e42.exe

Modifies WinLogon 2 TTPs 4 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList	nsupdater.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts	nsupdater.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList\xrcbCBF = "0"	nsupdater.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\AllowMultipleTSSessions = "1"	nsupdater.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\rfxvmt.dll	nsupdater.exe
File created	C:\Windows\System32\rfxvmt.dll	nsupdater.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\programs.bat	f063c197471def0a2e37f80f83197e42.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\programs.bat:start	f063c197471def0a2e37f80f83197e42.exe

Executes dropped EXE 1 IoCs

pid	Process
1788	nsupdater.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2428	1460	WerFault.exe	69
780	764	WerFault.exe	79

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\ProgramData:ApplicationData	f063c197471def0a2e37f80f83197e42.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\TermService\Parameters\ServiceDll = "%ProgramFiles%\\Microsoft DN1\\sqlmap.dll"	nsupdater.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
628	Process not Found

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft DN1\sqlmap.dll	nsupdater.exe
File created	C:\Program Files\Microsoft DN1\rdpwrap.ini	nsupdater.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3692 wrote to memory of 1460	3692	f063c197471def0a2e37f80f83197e42.exe	69
PID 3692 wrote to memory of 1460	3692	f063c197471def0a2e37f80f83197e42.exe	69
PID 3692 wrote to memory of 1460	3692	f063c197471def0a2e37f80f83197e42.exe	69
PID 3692 wrote to memory of 1788	3692	f063c197471def0a2e37f80f83197e42.exe	71
PID 3692 wrote to memory of 1788	3692	f063c197471def0a2e37f80f83197e42.exe	71
PID 3692 wrote to memory of 1788	3692	f063c197471def0a2e37f80f83197e42.exe	71
PID 1788 wrote to memory of 764	1788	nsupdater.exe	79
PID 1788 wrote to memory of 764	1788	nsupdater.exe	79
PID 1788 wrote to memory of 764	1788	nsupdater.exe	79

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeRestorePrivilege	2428	WerFault.exe
Token: SeBackupPrivilege	2428	WerFault.exe
Token: SeDebugPrivilege	2428	WerFault.exe
Token: SeDebugPrivilege	780	WerFault.exe
Token: SeDebugPrivilege	1788	nsupdater.exe
Token: SeAuditPrivilege	2304	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2304	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f063c197471def0a2e37f80f83197e42.exe
"C:\Users\Admin\AppData\Local\Temp\f063c197471def0a2e37f80f83197e42.exe"
1⤵
- Adds Run entry to start application
- Drops startup file
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:3692
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell Add-MpPreference -ExclusionPath C:\
  2⤵
  PID:1460
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 708
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Program crash
    - Suspicious use of AdjustPrivilegeToken
    PID:2428
- C:\ProgramData\nsupdater.exe
  "C:\ProgramData\nsupdater.exe"
  2⤵
  - Modifies WinLogon
  - Drops file in System32 directory
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  - Suspicious use of AdjustPrivilegeToken
  PID:1788
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell Add-MpPreference -ExclusionPath C:\
    3⤵
    PID:764
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 704
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Program crash
      Suspicious use of AdjustPrivilegeToken
      PID:780

\??\c:\windows\system32\svchost.exe
c:\windows\system32\svchost.exe -k networkservice -s TermService
1⤵
PID:1132

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -s TermService
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Loads dropped DLL
PID:2304

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/780-19-0x0000000004D10000-0x0000000004D11000-memory.dmp

Download

memory/1788-17-0x0000000002D10000-0x0000000002E64000-memory.dmp

Download

memory/2428-12-0x0000000004E20000-0x0000000004E21000-memory.dmp

Download

memory/2428-5-0x00000000046F0000-0x00000000046F1000-memory.dmp

Download

memory/3692-0-0x0000000002E30000-0x0000000002F84000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads