tofsee | adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6

General

Target
adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe
Size 12.5MB
Sample261108-xytp6aey71
SHA256 adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6
MD5 34f522acfe31be665afa9234d893c90b
SHA1 076b6b16c63d47b3ec55a797ecb5b48d9141b7bd
SHA512 46f9e88b50185f150e5d765e60bb771f352447c9fdd9dee37c6185878860b7471731bce56ecaec422775e663137e87d1fec6b83fe9c0c79391d1878db1e9905e
SSDEEP 49152:oEp0Jrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvn:ol
TLSH
T1B2D6436676D86ED9D0CA0FBC09A1C42B5DECFB34043A553096D1504F98AE78A973CBB3
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
4744	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
3532	dtoaugkc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3532 set thread context of 4496	3532	dtoaugkc.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4344	sc.exe
5928	sc.exe
4524	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 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

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
3144	cmd.exe
1436	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	adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.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	dtoaugkc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 3144	2896	adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe	89
PID 2896 wrote to memory of 1436	2896	adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe	91
PID 2896 wrote to memory of 4344	2896	adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe	93
PID 2896 wrote to memory of 5928	2896	adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe	96
PID 2896 wrote to memory of 4524	2896	adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe	98
PID 3532 wrote to memory of 4496	3532	dtoaugkc.exe	101
PID 3532 wrote to memory of 4496	3532	dtoaugkc.exe	101
PID 2896 wrote to memory of 4744	2896	adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe	102

C:\Users\Admin\AppData\Local\Temp\adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe
"C:\Users\Admin\AppData\Local\Temp\adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oocmhzmh\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:3144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dtoaugkc.exe" C:\Windows\SysWOW64\oocmhzmh\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:1436
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oocmhzmh binPath= "C:\Windows\SysWOW64\oocmhzmh\dtoaugkc.exe /d\"C:\Users\Admin\AppData\Local\Temp\adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oocmhzmh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oocmhzmh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4524
- 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:4744

C:\Windows\SysWOW64\oocmhzmh\dtoaugkc.exe
C:\Windows\SysWOW64\oocmhzmh\dtoaugkc.exe /d"C:\Users\Admin\AppData\Local\Temp\adf6006c7fccdb1020caeda769aa515ef089575d788fd6a5417cf7e3a4d41cb6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:4496

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

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Downloads

dtoaugkc.exe

Path C:\Users\Admin\AppData\Local\Temp\dtoaugkc.exe
Size 14.1MB
SHA256 00145a96626a590e73a99f06ec527dd4838aaaaeac97c0e0e35ce38f5020f12d
MD5 24ecf1ec0f9cf8268d8f5f037f4b7c97
SHA1 5a455b397465927a57214cfa4e1d7799587cc891
SHA512 14a57c892fb642ab84df0f1dd13b4c0139f837674546f325e0bf91897b39fb8b97efd5e8100680f2ad7011229613e4d9420d58088437ae66bcdb6cefa23b7a6a
SSDEEP 49152:eEp0Jrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrv/:el
TLSH
T1C1E6436676D86ED9D0CA0FBC09A1C42B5DECFB34043A553096D1504F98AE78A973CBB3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2896-0-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/2896-10-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/3532-5-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/3532-7-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/4496-6-0x0000000001000000-0x0000000001049000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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