8a701f005b543456bb8a67bbb2d0031d8cffb147b4c74ed7023e1fe07528ca17

General

Target
jaffacakes118_HEUR.Trojan.Win32.Generic.exe
Size 95KB
Sample261014-dtsshsez2x
SHA256 8a701f005b543456bb8a67bbb2d0031d8cffb147b4c74ed7023e1fe07528ca17
MD5 52c7fc9e9c822a34301f67ff2960eb02
SHA1 19e5a298846f423c169a0d96a7616fb92e21291f
SHA512 f1ddf43257f2c8ffd3edcf77c3e5cc036c799e83a4f46a2d90cdca303f9d26affd454ae27c7186c99652a1d005d1f84a3314c97b89fa95c859523047672c7a2b
SSDEEP 1536:EAVLPFiWjDQSLMqZ+tnkZD5e018OtG8Fd8llQNgn9jhmfH3jKJHLD7PyN/+IN:L9FioGqZ+NI5r8f8Fd8llQN22H3jiHre
TLSH
T19C93F1D412C94DA8D775F330ABBFA4054B01E75C9D27DE9F19B3A3A12E6DCC40A029A7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery persistence privilege_escalation

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 3 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\""	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\""	jaffacakes118_HEUR.Trojan.Win32.Generic.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\""	spoolsv.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4288	netsh.exe

Executes a file named after a Windows system binary 1 TTPs 2 IoCs

The file runs from a user directory while carrying the name of an executable that normally only exists in System32.

defense_evasion

Match Legitimate Name or Location

T1036.005

description	ioc	Process
File opened (read-only)	C:\Users\Admin\AppData\Roaming\spoolsv.exe	spoolsv.exe
File opened (read-only)	C:\Users\Admin\AppData\Roaming\spoolsv.exe	spoolsv.exe

Executes dropped EXE 4 IoCs

pid	Process
3972	spoolsv.exe
944	spoolsv.exe
2628	spoolsv.exe
3880	spoolsv.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\""	jaffacakes118_HEUR.Trojan.Win32.Generic.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-240542094-4193773837-3211495583-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\""	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\""	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-240542094-4193773837-3211495583-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\""	spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\""	spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-240542094-4193773837-3211495583-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSWUpdate = "\"C:\\Users\\Admin\\AppData\\Roaming\\spoolsv.exe\""	jaffacakes118_HEUR.Trojan.Win32.Generic.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4860 set thread context of 3596	4860	jaffacakes118_HEUR.Trojan.Win32.Generic.exe	88
PID 3972 set thread context of 944	3972	spoolsv.exe	96
PID 2628 set thread context of 3880	2628	spoolsv.exe	103

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	jaffacakes118_HEUR.Trojan.Win32.Generic.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	jaffacakes118_HEUR.Trojan.Win32.Generic.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	spoolsv.exe

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_HEUR.Trojan.Win32.Generic.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_HEUR.Trojan.Win32.Generic.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4860	jaffacakes118_HEUR.Trojan.Win32.Generic.exe
Token: SeDebugPrivilege	3972	spoolsv.exe
Token: SeDebugPrivilege	2628	spoolsv.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3596	jaffacakes118_HEUR.Trojan.Win32.Generic.exe
944	spoolsv.exe
3880	spoolsv.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 4576	4860	jaffacakes118_HEUR.Trojan.Win32.Generic.exe	87
PID 4860 wrote to memory of 3596	4860	jaffacakes118_HEUR.Trojan.Win32.Generic.exe	88
PID 4860 wrote to memory of 3596	4860	jaffacakes118_HEUR.Trojan.Win32.Generic.exe	88
PID 4860 wrote to memory of 3596	4860	jaffacakes118_HEUR.Trojan.Win32.Generic.exe	88
PID 4860 wrote to memory of 3596	4860	jaffacakes118_HEUR.Trojan.Win32.Generic.exe	88
PID 3596 wrote to memory of 4288	3596	jaffacakes118_HEUR.Trojan.Win32.Generic.exe	92
PID 3596 wrote to memory of 3972	3596	jaffacakes118_HEUR.Trojan.Win32.Generic.exe	93
PID 3972 wrote to memory of 5024	3972	spoolsv.exe	95
PID 3972 wrote to memory of 944	3972	spoolsv.exe	96
PID 3972 wrote to memory of 944	3972	spoolsv.exe	96
PID 3972 wrote to memory of 944	3972	spoolsv.exe	96
PID 3972 wrote to memory of 944	3972	spoolsv.exe	96
PID 2628 wrote to memory of 948	2628	spoolsv.exe	102
PID 2628 wrote to memory of 3880	2628	spoolsv.exe	103
PID 2628 wrote to memory of 3880	2628	spoolsv.exe	103
PID 2628 wrote to memory of 3880	2628	spoolsv.exe	103
PID 2628 wrote to memory of 3880	2628	spoolsv.exe	103

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_HEUR.Trojan.Win32.Generic.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_HEUR.Trojan.Win32.Generic.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Users\Admin\AppData\Local\Temp\jaffacakes118_HEUR.Trojan.Win32.Generic.exe
  jaffacakes118_HEUR.Trojan.Win32.Generic.exe
  2⤵
  PID:4576
- C:\Users\Admin\AppData\Local\Temp\jaffacakes118_HEUR.Trojan.Win32.Generic.exe
  jaffacakes118_HEUR.Trojan.Win32.Generic.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3596
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\spoolsv.exe" CityScape Enable
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4288
- - C:\Users\Admin\AppData\Roaming\spoolsv.exe
    /d C:\Users\Admin\AppData\Local\Temp\jaffacakes118_HEUR.Trojan.Win32.Generic.exe
    3⤵
    - Executes a file named after a Windows system binary
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3972
  - - C:\Users\Admin\AppData\Roaming\spoolsv.exe
      spoolsv.exe
      4⤵
      PID:5024
  - - C:\Users\Admin\AppData\Roaming\spoolsv.exe
      spoolsv.exe
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Reads the TCP/IP host and domain name from the registry
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:944

C:\Users\Admin\AppData\Roaming\spoolsv.exe
"C:\Users\Admin\AppData\Roaming\spoolsv.exe"
1⤵
- Executes a file named after a Windows system binary
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Users\Admin\AppData\Roaming\spoolsv.exe
  spoolsv.exe
  2⤵
  PID:948
- C:\Users\Admin\AppData\Roaming\spoolsv.exe
  spoolsv.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Adds Run key to start application
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3880

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

1

T1562.004

Masquerading

1

T1036

Match Legitimate Name or Location

Modify Registry

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

spoolsv.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\spoolsv.exe.log
Size 224B
SHA256 42f723d18283fda6a0904046cc29ee8d10e562d20c7615259a46ae9c0e4c9708
MD5 9c4b66f77f12558c48b620ddfb44029d
SHA1 446651db643b943ec37b9b3599655e211a4bc73e
SHA512 983aed0ec15a79b716ac6dc080146e4ed098c117c31167053fb5971649dc621d1db5292fdd76f3010f094b75d57ea0bdb35bc829c6ba37e4d276b266361dee8e
TLSH
T1ABD023303731C4F444103D1145013AD549BF43436764DF3D52594356E4191A7FF142F3
MD5 SHA1 SHA512 TLSH

Submit Download

spoolsv.exe

Path C:\Users\Admin\AppData\Roaming\spoolsv.exe
Size 95KB
SHA256 85155e94fbc203f4b241df38b266c55412148e464bf11aaaf1a2983d02cc8c39
MD5 57a341b3679bb80f1eef5a3d8a257837
SHA1 2ae4f88ededcdc2db70899e18c835cce9b44ddc8
SHA512 64a57b798d628f9eb2c0735a5c0e0eed89c75629e92a206cf0cc6c53dbb1549757b67ff010a38fb689915e4da31019c35f4c6ee3bc0866de3c47bc71bf23f577
SSDEEP 1536:EAVLPFiWjDQSLMqZ+tnkZD5e018OtG8Fd8llQNgn9jhmfH3jKJHLD7PyN/+IN:L9FioGqZ+NI5r8f8Fd8llQN22H3jiHre
TLSH
T16093F1D412C94DA8D775F330ABBFA4054B01E75C9D27DE9F19B3A3A12E6DCC40A029A7
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3596-2-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/3596-5-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/3972-28-0x0000000073782000-0x0000000073784000-memory.dmp

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memory/3972-27-0x0000000001300000-0x0000000001310000-memory.dmp

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memory/4860-0-0x0000000000AE0000-0x0000000000AF0000-memory.dmp

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memory/4860-1-0x0000000074FC2000-0x0000000074FC4000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads