tofsee | 336f78a2424aea7feba8ab5cf2ace4dd0f94a6f2c89babf6b80b12ed8d3e1be1

General

Target

2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe
Size

12.8MB
MD5

85b00410f90774960ae46efec9f11613
SHA1

7712e2db36a26029331d6e509113d042b90cf457
SHA256

336f78a2424aea7feba8ab5cf2ace4dd0f94a6f2c89babf6b80b12ed8d3e1be1
SHA512

b6de80de2e8d45b2ec0bb4b9370325620009841dcc06087162195bead77cb1886f7f5f23435a05d6d1ccd27e551c71d00180830a69f2c1dfdb850cf4afc5210e
SSDEEP

24576:PEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ:Mfot

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
3612	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\oprwztmi\ImagePath = "C:\\Windows\\SysWOW64\\oprwztmi\\tnnepypr.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe

Deletes itself 1 IoCs

pid	Process
2360	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4948	tnnepypr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4948 set thread context of 2360	4948	tnnepypr.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
2980	sc.exe
2116	sc.exe
4452	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
5104	2788	WerFault.exe	82
876	4948	WerFault.exe	95

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tnnepypr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 4656	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	85
PID 2788 wrote to memory of 4656	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	85
PID 2788 wrote to memory of 4656	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	85
PID 2788 wrote to memory of 3696	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	87
PID 2788 wrote to memory of 3696	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	87
PID 2788 wrote to memory of 3696	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	87
PID 2788 wrote to memory of 2980	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	89
PID 2788 wrote to memory of 2980	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	89
PID 2788 wrote to memory of 2980	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	89
PID 2788 wrote to memory of 2116	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	91
PID 2788 wrote to memory of 2116	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	91
PID 2788 wrote to memory of 2116	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	91
PID 2788 wrote to memory of 4452	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	93
PID 2788 wrote to memory of 4452	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	93
PID 2788 wrote to memory of 4452	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	93
PID 2788 wrote to memory of 3612	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	98
PID 2788 wrote to memory of 3612	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	98
PID 2788 wrote to memory of 3612	2788	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	98
PID 4948 wrote to memory of 2360	4948	tnnepypr.exe	108
PID 4948 wrote to memory of 2360	4948	tnnepypr.exe	108
PID 4948 wrote to memory of 2360	4948	tnnepypr.exe	108
PID 4948 wrote to memory of 2360	4948	tnnepypr.exe	108
PID 4948 wrote to memory of 2360	4948	tnnepypr.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oprwztmi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4656
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tnnepypr.exe" C:\Windows\SysWOW64\oprwztmi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oprwztmi binPath= "C:\Windows\SysWOW64\oprwztmi\tnnepypr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2980
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oprwztmi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oprwztmi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4452
- 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:3612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2788 -s 1036
  2⤵
  - Program crash
  PID:5104

C:\Windows\SysWOW64\oprwztmi\tnnepypr.exe
C:\Windows\SysWOW64\oprwztmi\tnnepypr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4948
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4948 -s 528
  2⤵
  - Program crash
  PID:876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2788 -ip 2788
1⤵
PID:3944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4948 -ip 4948
1⤵
PID:2508

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\tnnepypr.exe

Filesize
13.7MB

MD5
fa5318964cda81acd0ae05c78774f733

SHA1
deb2b3a4442be493b3058fd5f5793531504a6cf4

SHA256
c43d77c8c69b20c14aa3a0538d77df236b27c8dc9548e88561039fffca69fbf0

SHA512
2246bfa19278bf72140f7906b0380fdbc694f032026959c0f831044dbf54f98f6ffb422961a8759b6cec6459abe5921b7fd8d8e6949c1d55c1dd1316059770fa

Download Submit
memory/2360-16-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2360-17-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2360-14-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2788-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2788-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/2788-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2788-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/2788-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2788-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/4948-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4948-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4948-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4948-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads