tofsee | f3d4d7d949b580549377e738825b62201df2989728aa0e772397e6be1be5cb31

General

Target

152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe
Size

13.0MB
MD5

152a60c00cbfc41bd421e898e0ee7737
SHA1

78f3cb1db0829bfd6fdc1e6dabfc1abd52d4dd64
SHA256

f3d4d7d949b580549377e738825b62201df2989728aa0e772397e6be1be5cb31
SHA512

67f767bec4534f94d5774cfa9a80465d9902e344a89aeba24ce6a6d69a682d5283f180d3ea1d2e45c2b758be82920ae99dbbaf1bd6598ff87f6df6da5be38bd9
SSDEEP

49152:jRBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBr:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\tlxnpfnl = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2912 netsh.exe

pid	process
2912	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\tlxnpfnl\ImagePath = "C:\\Windows\\SysWOW64\\tlxnpfnl\\sstbhceq.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1992 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

sstbhceq.exe

pid process

2688 sstbhceq.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

sstbhceq.exe

description pid process target process

PID 2688 set thread context of 1992 2688 sstbhceq.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2792 sc.exe
2168 sc.exe
2660 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1992	svchost.exe

pid	process
2688	sstbhceq.exe

description	pid	process	target process
PID 2688 set thread context of 1992	2688	sstbhceq.exe	svchost.exe

pid	process
2792	sc.exe
2168	sc.exe
2660	sc.exe

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

Processes:

netsh.exe

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

System Location Discovery: System Language Discovery 1 TTPs 9 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

Processes:

sc.exesc.exenetsh.exesvchost.exe152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.execmd.execmd.exesc.exesstbhceq.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sstbhceq.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exesstbhceq.exe

description	pid	process	target process
PID 548 wrote to memory of 1440	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 548 wrote to memory of 1440	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 548 wrote to memory of 1440	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 548 wrote to memory of 1440	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 548 wrote to memory of 2508	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 548 wrote to memory of 2508	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 548 wrote to memory of 2508	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 548 wrote to memory of 2508	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 548 wrote to memory of 2168	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2168	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2168	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2168	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2660	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2660	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2660	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2660	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2792	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2792	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2792	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2792	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 548 wrote to memory of 2912	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	netsh.exe
PID 548 wrote to memory of 2912	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	netsh.exe
PID 548 wrote to memory of 2912	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	netsh.exe
PID 548 wrote to memory of 2912	548	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	netsh.exe
PID 2688 wrote to memory of 1992	2688	sstbhceq.exe	svchost.exe
PID 2688 wrote to memory of 1992	2688	sstbhceq.exe	svchost.exe
PID 2688 wrote to memory of 1992	2688	sstbhceq.exe	svchost.exe
PID 2688 wrote to memory of 1992	2688	sstbhceq.exe	svchost.exe
PID 2688 wrote to memory of 1992	2688	sstbhceq.exe	svchost.exe
PID 2688 wrote to memory of 1992	2688	sstbhceq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tlxnpfnl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1440
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sstbhceq.exe" C:\Windows\SysWOW64\tlxnpfnl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tlxnpfnl binPath= "C:\Windows\SysWOW64\tlxnpfnl\sstbhceq.exe /d\"C:\Users\Admin\AppData\Local\Temp\152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tlxnpfnl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tlxnpfnl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2912

C:\Windows\SysWOW64\tlxnpfnl\sstbhceq.exe
C:\Windows\SysWOW64\tlxnpfnl\sstbhceq.exe /d"C:\Users\Admin\AppData\Local\Temp\152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\sstbhceq.exe

Filesize
10.4MB

MD5
44dadcc770ed94dc8d13372781d351cf

SHA1
549c860cd990088225e10b67e805eb5364a29273

SHA256
72db2bb639e8ea40455b09d3e79df108a7358e88790fa712dbf5b90ecabb2d54

SHA512
5fefb93ba48a6503b195ebaf27887c87a85be1f684965c9d65d8e091cd0db3caaeb5990559c9ccd24c4ad51145c6a2f4f75d05c7d7625984a193004e8ca884ee

Download Submit
memory/548-8-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/548-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/548-2-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/548-7-0x0000000000400000-0x0000000000C0A000-memory.dmp

Filesize
8.0MB

Download
memory/548-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/548-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/1992-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1992-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1992-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1992-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1992-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2688-16-0x0000000000400000-0x0000000000C0A000-memory.dmp

Filesize
8.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads