tofsee | 567c2df5c4c309cf3c4931456ff660ad9c02257ea9d644d62bfb26b42b267ff2

General

Target

2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe
Size

11.0MB
MD5

655716878fab7da3b08de8fcf3c9df8f
SHA1

c3f471be06fb351656f1c1fde478bb1db119c36f
SHA256

567c2df5c4c309cf3c4931456ff660ad9c02257ea9d644d62bfb26b42b267ff2
SHA512

93a2b7f11def091e83cdd55de0b197926981965599afd77e37bbfcb06bdd1965ebfda2db891ad303c33a4e7ef056715dfa2b0a72c6d550c9918964b5a4c27cf7
SSDEEP

49152:kqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:kqtYc3

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2384	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\jdivkjty\ImagePath = "C:\\Windows\\SysWOW64\\jdivkjty\\gsrfqaic.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-70482961-775596374-3727440602-1000\Control Panel\International\Geo\Nation	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe

Deletes itself 1 IoCs

pid	Process
1276	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3608	gsrfqaic.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3608 set thread context of 1276	3608	gsrfqaic.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
3672	sc.exe
4504	sc.exe
4836	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1364	4988	WerFault.exe	82
228	3608	WerFault.exe	96

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

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	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	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.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	gsrfqaic.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 4868	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	86
PID 4988 wrote to memory of 4868	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	86
PID 4988 wrote to memory of 4868	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	86
PID 4988 wrote to memory of 3500	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	88
PID 4988 wrote to memory of 3500	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	88
PID 4988 wrote to memory of 3500	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	88
PID 4988 wrote to memory of 4504	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	90
PID 4988 wrote to memory of 4504	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	90
PID 4988 wrote to memory of 4504	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	90
PID 4988 wrote to memory of 4836	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	92
PID 4988 wrote to memory of 4836	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	92
PID 4988 wrote to memory of 4836	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	92
PID 4988 wrote to memory of 3672	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	94
PID 4988 wrote to memory of 3672	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	94
PID 4988 wrote to memory of 3672	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	94
PID 3608 wrote to memory of 1276	3608	gsrfqaic.exe	97
PID 3608 wrote to memory of 1276	3608	gsrfqaic.exe	97
PID 3608 wrote to memory of 1276	3608	gsrfqaic.exe	97
PID 3608 wrote to memory of 1276	3608	gsrfqaic.exe	97
PID 3608 wrote to memory of 1276	3608	gsrfqaic.exe	97
PID 4988 wrote to memory of 2384	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	99
PID 4988 wrote to memory of 2384	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	99
PID 4988 wrote to memory of 2384	4988	2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe	99

C:\Users\Admin\AppData\Local\Temp\2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jdivkjty\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gsrfqaic.exe" C:\Windows\SysWOW64\jdivkjty\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jdivkjty binPath= "C:\Windows\SysWOW64\jdivkjty\gsrfqaic.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jdivkjty "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jdivkjty
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3672
- 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:2384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 680
  2⤵
  - Program crash
  PID:1364

C:\Windows\SysWOW64\jdivkjty\gsrfqaic.exe
C:\Windows\SysWOW64\jdivkjty\gsrfqaic.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_655716878fab7da3b08de8fcf3c9df8f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1276
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3608 -s 508
  2⤵
  - Program crash
  PID:228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4988 -ip 4988
1⤵
PID:432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3608 -ip 3608
1⤵
PID:4208

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

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\gsrfqaic.exe

Filesize
14.0MB

MD5
04754487afd50243e3b6501712051e81

SHA1
0e138eba31017473b71f1e4049faba98331a6409

SHA256
98f3a7750be94ebd7bf575f0b3cd74af4725c3278de6a2fdc6475cad781f3fb6

SHA512
fb5f9a214fe089147622ea18bd74068630c7e1355fca728a25f8be17019f6dba5b80f652c611741c78ece93bc16c824ed1ff6038f27b3430644eeca352ebd8cb

Download Submit
memory/1276-8-0x00000000005E0000-0x00000000005F5000-memory.dmp

Filesize
84KB

Download
memory/1276-14-0x00000000005E0000-0x00000000005F5000-memory.dmp

Filesize
84KB

Download
memory/1276-15-0x00000000005E0000-0x00000000005F5000-memory.dmp

Filesize
84KB

Download
memory/3608-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4988-1-0x0000000002F60000-0x0000000003060000-memory.dmp

Filesize
1024KB

Download
memory/4988-2-0x0000000002EA0000-0x0000000002EB3000-memory.dmp

Filesize
76KB

Download
memory/4988-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4988-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4988-12-0x0000000002EA0000-0x0000000002EB3000-memory.dmp

Filesize
76KB

Download
memory/4988-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads