tofsee | ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309

General

Target
ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe
Size 12.4MB
Sample261111-29e4cssvhw
SHA256 ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309
MD5 d08ead51c3ac603350cb108c2459d94c
SHA1 e001dedf518e61ba829f4e3a9df5e2cb28e00841
SHA512 9f3a09e293edef90add82bb52021f7a7887c07239c37e666298d47b94accfafd81c72b6958ea26e8ee6ba425f3163b7d8fa1f31d75b618f3a4831a0fea7a3b55
SSDEEP 49152:rlp+5rvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvn:rW
TLSH
T178D6436676D86ED9D0CA0FBC09A1C42B5DECFB34043A553096D1504F98AE78A973CBB3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution tofsee persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru
refabyd.info

Signatures

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

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2076	netsh.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Executes dropped EXE 1 IoCs

pid	Process
5956	mpiqoqyi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5956 set thread context of 5304	5956	mpiqoqyi.exe	101

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1680	sc.exe
4964	sc.exe
2452	sc.exe

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

System Information Discovery
T1082

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

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4184	cmd.exe
4996	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mpiqoqyi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5584 wrote to memory of 4184	5584	ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe	89
PID 5584 wrote to memory of 4996	5584	ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe	91
PID 5584 wrote to memory of 1680	5584	ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe	93
PID 5584 wrote to memory of 4964	5584	ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe	95
PID 5584 wrote to memory of 2452	5584	ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe	98
PID 5956 wrote to memory of 5304	5956	mpiqoqyi.exe	101
PID 5956 wrote to memory of 5304	5956	mpiqoqyi.exe	101
PID 5584 wrote to memory of 2076	5584	ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe	102

C:\Users\Admin\AppData\Local\Temp\ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe
"C:\Users\Admin\AppData\Local\Temp\ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5584
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pwkrnknc\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4184
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mpiqoqyi.exe" C:\Windows\SysWOW64\pwkrnknc\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pwkrnknc binPath= "C:\Windows\SysWOW64\pwkrnknc\mpiqoqyi.exe /d\"C:\Users\Admin\AppData\Local\Temp\ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pwkrnknc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pwkrnknc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2452
- 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:2076

C:\Windows\SysWOW64\pwkrnknc\mpiqoqyi.exe
C:\Windows\SysWOW64\pwkrnknc\mpiqoqyi.exe /d"C:\Users\Admin\AppData\Local\Temp\ed247101c7f12d4ee13007314837de2d70042f7318f94adef43e1d0408454309.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5956
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:5304

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

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

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

1

T1562

Disable or Modify System Firewall

1

T1562.004

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

Replay Monitor

Loading Replay Monitor...

Downloads

mpiqoqyi.exe

Path C:\Users\Admin\AppData\Local\Temp\mpiqoqyi.exe
Size 14.3MB
SHA256 c1170f650f2cd6f8db6dbb8e57456e3a4c6d1f31b4cb10c9a65d6cf133ac538c
MD5 5316790c9db5f2e5605a14583278b6fe
SHA1 3619e2eda37fd06ca712fe42405414c7cfb74fc3
SHA512 3be413b807aa8987de870e4a4d3e1d3206bb76b0b53654a6e6d85df3b46272c40bc2673fd54580cc243a3ae1c0cf04fe7559596fe80b361b1c763af4f3b3a01b
SSDEEP 49152:Ulp+5rvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvb:UW
TLSH
T19BE6436676D86ED9D0CA0FBC09A1C42B5DECFB34043A553096D1504F98AE78A973CBB3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5304-6-0x0000000000190000-0x00000000001D9000-memory.dmp

Download

memory/5584-0-0x0000000000400000-0x0000000000449000-memory.dmp

Download

memory/5584-10-0x0000000000400000-0x0000000000449000-memory.dmp

Download

memory/5956-5-0x0000000000400000-0x0000000000449000-memory.dmp

Download

memory/5956-9-0x0000000000400000-0x0000000000449000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads