tofsee | cb91e1fdec2e73cac56f31d34efe5f8ce8612d83d6478a57eb5a8fa0acce3acd

General

Target

2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe
Size

11.5MB
MD5

7c90e1699a20035eb73f3dc5d0ea3132
SHA1

bd217fc8671a899c3e20e6c53b483b69359be720
SHA256

cb91e1fdec2e73cac56f31d34efe5f8ce8612d83d6478a57eb5a8fa0acce3acd
SHA512

b5ad5003b6744b58696789cbe41a23f2b64c09cccbb085d93685b29edf715927ff467d872e0b819d42567c6770293442b205e60d41f181441a6e3f6e50b74f70
SSDEEP

3072:8LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:ZOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
4224	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\hffblwuv\ImagePath = "C:\\Windows\\SysWOW64\\hffblwuv\\svbvkvgm.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe

Deletes itself 1 IoCs

pid	Process
1444	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2400	svbvkvgm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2400 set thread context of 1444	2400	svbvkvgm.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1384	sc.exe
3308	sc.exe
1160	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
4312	684	WerFault.exe	81
3804	2400	WerFault.exe	92

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	svbvkvgm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 684 wrote to memory of 1152	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	82
PID 684 wrote to memory of 1152	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	82
PID 684 wrote to memory of 1152	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	82
PID 684 wrote to memory of 1440	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	84
PID 684 wrote to memory of 1440	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	84
PID 684 wrote to memory of 1440	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	84
PID 684 wrote to memory of 1384	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	86
PID 684 wrote to memory of 1384	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	86
PID 684 wrote to memory of 1384	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	86
PID 684 wrote to memory of 3308	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	88
PID 684 wrote to memory of 3308	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	88
PID 684 wrote to memory of 3308	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	88
PID 684 wrote to memory of 1160	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	90
PID 684 wrote to memory of 1160	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	90
PID 684 wrote to memory of 1160	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	90
PID 684 wrote to memory of 4224	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	93
PID 684 wrote to memory of 4224	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	93
PID 684 wrote to memory of 4224	684	2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe	93
PID 2400 wrote to memory of 1444	2400	svbvkvgm.exe	98
PID 2400 wrote to memory of 1444	2400	svbvkvgm.exe	98
PID 2400 wrote to memory of 1444	2400	svbvkvgm.exe	98
PID 2400 wrote to memory of 1444	2400	svbvkvgm.exe	98
PID 2400 wrote to memory of 1444	2400	svbvkvgm.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hffblwuv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\svbvkvgm.exe" C:\Windows\SysWOW64\hffblwuv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1440
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hffblwuv binPath= "C:\Windows\SysWOW64\hffblwuv\svbvkvgm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hffblwuv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hffblwuv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1160
- 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:4224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 684 -s 1228
  2⤵
  - Program crash
  PID:4312

C:\Windows\SysWOW64\hffblwuv\svbvkvgm.exe
C:\Windows\SysWOW64\hffblwuv\svbvkvgm.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-24_7c90e1699a20035eb73f3dc5d0ea3132_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2400 -s 512
  2⤵
  - Program crash
  PID:3804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 684 -ip 684
1⤵
PID:4264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2400 -ip 2400
1⤵
PID:4908

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\svbvkvgm.exe

Filesize
10.5MB

MD5
8f059343d7c39e6e45e3fc3310ebf150

SHA1
34f86dad2513caa981321b1a72eda5ec614e28e5

SHA256
f2eaa17c559c35369d95ff4930157403f3d650179cbb3e13416d5ace6283f737

SHA512
44c890258d3d20f044fae7a40bc5463533a7857c17e6679a4d77586e6c997d9ee8e66820ab4b8687354170fbb154307fe195c7272566beee7b14345464f98cdd

Download Submit
memory/684-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/684-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/684-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/684-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/684-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/684-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/1444-14-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/1444-16-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/1444-17-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/2400-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2400-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2400-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2400-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads