tofsee | dc1457831a3170e63c3bc791a963c11f1cf670862c7f9c65d4813b97c54ccf66

General

Target

2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe
Size

14.7MB
MD5

aaf8e49d400422b269c8ae719a1fa882
SHA1

f2bd9b6119558167165030f0b4f5c3fb632e456f
SHA256

dc1457831a3170e63c3bc791a963c11f1cf670862c7f9c65d4813b97c54ccf66
SHA512

267f2de50c70bee415f67c706227b5a66d2785d2e745a013e54aa7c6ea88296fa0c53455bca168d4e05fa11690cbd629cd9bde751e8f2719c681edfc3b9a7bc2
SSDEEP

3072:ULBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:ROMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
1372	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\nvbfgifi\ImagePath = "C:\\Windows\\SysWOW64\\nvbfgifi\\bdwhowka.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-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe

Deletes itself 1 IoCs

pid	Process
1476	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2248	bdwhowka.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2248 set thread context of 1476	2248	bdwhowka.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
624	sc.exe
3884	sc.exe
3672	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
8	4916	WerFault.exe	82
2348	2248	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_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	bdwhowka.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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 4916 wrote to memory of 3480	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	86
PID 4916 wrote to memory of 3480	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	86
PID 4916 wrote to memory of 3480	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	86
PID 4916 wrote to memory of 4544	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	88
PID 4916 wrote to memory of 4544	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	88
PID 4916 wrote to memory of 4544	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	88
PID 4916 wrote to memory of 624	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	90
PID 4916 wrote to memory of 624	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	90
PID 4916 wrote to memory of 624	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	90
PID 4916 wrote to memory of 3884	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	92
PID 4916 wrote to memory of 3884	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	92
PID 4916 wrote to memory of 3884	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	92
PID 4916 wrote to memory of 3672	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	94
PID 4916 wrote to memory of 3672	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	94
PID 4916 wrote to memory of 3672	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	94
PID 4916 wrote to memory of 1372	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	97
PID 4916 wrote to memory of 1372	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	97
PID 4916 wrote to memory of 1372	4916	2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe	97
PID 2248 wrote to memory of 1476	2248	bdwhowka.exe	102
PID 2248 wrote to memory of 1476	2248	bdwhowka.exe	102
PID 2248 wrote to memory of 1476	2248	bdwhowka.exe	102
PID 2248 wrote to memory of 1476	2248	bdwhowka.exe	102
PID 2248 wrote to memory of 1476	2248	bdwhowka.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nvbfgifi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bdwhowka.exe" C:\Windows\SysWOW64\nvbfgifi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nvbfgifi binPath= "C:\Windows\SysWOW64\nvbfgifi\bdwhowka.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:624
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nvbfgifi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nvbfgifi
  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:1372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4916 -s 672
  2⤵
  - Program crash
  PID:8

C:\Windows\SysWOW64\nvbfgifi\bdwhowka.exe
C:\Windows\SysWOW64\nvbfgifi\bdwhowka.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_aaf8e49d400422b269c8ae719a1fa882_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1476
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2248 -s 508
  2⤵
  - Program crash
  PID:2348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4916 -ip 4916
1⤵
PID:2364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2248 -ip 2248
1⤵
PID:1424

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\bdwhowka.exe

Filesize
14.7MB

MD5
6f303a357c9a17389e0bbda915946851

SHA1
d4a4f91ea8a2a718aa5316b79573221ce485c5ca

SHA256
e4cfb5aaa41d69bf2d095c756608af76f0b8e0789827e80762d825ec13664eb6

SHA512
4c9fe7e7b778de858c0c34dd72df9407adae3dcdb0334ef20421a6cbb77a89a4ee0c3cc9f734b678b05c3ae5912cf7366205cabbbaeaee169970a62610a7eafb

Download Submit
memory/1476-14-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/1476-17-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/1476-16-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/2248-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2248-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2248-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2248-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4916-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4916-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4916-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/4916-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4916-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4916-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads