tofsee | d7aff3bd4f728633f95b10819fd19809f9ebb5dba0e989db424a1e1a972d7ee3

General

Target

2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe
Size

12.2MB
MD5

a9343ac4629f6571ded4698ac1b1701c
SHA1

2e82080cb3f51d9ac04f4740c2bc97123588b936
SHA256

d7aff3bd4f728633f95b10819fd19809f9ebb5dba0e989db424a1e1a972d7ee3
SHA512

cc7e1872797d4de49d47c3e0b3d9e59ad56aa68f077b2046452d9f161b2bae5f902b511461daa19243b7c0f7dcdfb985dfb6b4e39263431cb11e61561bac94af
SSDEEP

6144:fLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQI:ETYe+D2jFu+iZoUFhAz

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
2768	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\dnpexbz\ImagePath = "C:\\Windows\\SysWOW64\\dnpexbz\\sbvasrmi.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe

Deletes itself 1 IoCs

pid	Process
1796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1140	sbvasrmi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1140 set thread context of 1796	1140	sbvasrmi.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
2008	sc.exe
3848	sc.exe
2908	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
3012	1140	WerFault.exe	92
3096	2340	WerFault.exe	81

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	sbvasrmi.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	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2276	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	82
PID 2340 wrote to memory of 2276	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	82
PID 2340 wrote to memory of 2276	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	82
PID 2340 wrote to memory of 2416	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	84
PID 2340 wrote to memory of 2416	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	84
PID 2340 wrote to memory of 2416	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	84
PID 2340 wrote to memory of 2008	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	86
PID 2340 wrote to memory of 2008	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	86
PID 2340 wrote to memory of 2008	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	86
PID 2340 wrote to memory of 3848	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	88
PID 2340 wrote to memory of 3848	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	88
PID 2340 wrote to memory of 3848	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	88
PID 2340 wrote to memory of 2908	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	90
PID 2340 wrote to memory of 2908	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	90
PID 2340 wrote to memory of 2908	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	90
PID 1140 wrote to memory of 1796	1140	sbvasrmi.exe	93
PID 1140 wrote to memory of 1796	1140	sbvasrmi.exe	93
PID 1140 wrote to memory of 1796	1140	sbvasrmi.exe	93
PID 1140 wrote to memory of 1796	1140	sbvasrmi.exe	93
PID 1140 wrote to memory of 1796	1140	sbvasrmi.exe	93
PID 2340 wrote to memory of 2768	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	95
PID 2340 wrote to memory of 2768	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	95
PID 2340 wrote to memory of 2768	2340	2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe	95

C:\Users\Admin\AppData\Local\Temp\2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dnpexbz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2276
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sbvasrmi.exe" C:\Windows\SysWOW64\dnpexbz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dnpexbz binPath= "C:\Windows\SysWOW64\dnpexbz\sbvasrmi.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dnpexbz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dnpexbz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2908
- 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:2768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2340 -s 1040
  2⤵
  - Program crash
  PID:3096

C:\Windows\SysWOW64\dnpexbz\sbvasrmi.exe
C:\Windows\SysWOW64\dnpexbz\sbvasrmi.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-24_a9343ac4629f6571ded4698ac1b1701c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1140
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1140 -s 532
  2⤵
  - Program crash
  PID:3012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2340 -ip 2340
1⤵
PID:3624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1140 -ip 1140
1⤵
PID:4292

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\sbvasrmi.exe

Filesize
10.5MB

MD5
bd03ed28209f5f43abf9928a911fe0ec

SHA1
77a8fa321b113a57284e46a8f641ace5de4693cb

SHA256
a82d76c13e4bb43b12ec0dbd1d8f9004e799f025d701a2a6859f7e59dc85f910

SHA512
fb9a0669d05ed2d719b1fd67289d4b25e29de14d0fe88be1089e0fd5dcbdac9118f5a5203796da89f252e00282994399bcbbf32f1bcf69c26c4bff85dd85e939

Download Submit
memory/1140-14-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1140-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1796-12-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/1796-9-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/1796-18-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/1796-19-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/1796-20-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/2340-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2340-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/2340-2-0x0000000000910000-0x0000000000923000-memory.dmp

Filesize
76KB

Download
memory/2340-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2340-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2340-16-0x0000000000910000-0x0000000000923000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads