tofsee | c112f21a28911d1995b8a33f5e8310764421a058e250d07e8a2d5c78e1e38b97

General

Target

2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe
Size

12.2MB
MD5

fab4de48010f51b4aa8aa0751b525553
SHA1

8cb8355eea57313d0761160f89d8782cbd69b359
SHA256

c112f21a28911d1995b8a33f5e8310764421a058e250d07e8a2d5c78e1e38b97
SHA512

98afc6fa1aa0f8053cc68d9f2e291454c3f6a07fc0702b7c4934c812c089625558d47fb44e7f31e19ff68ab00f71a672e8444b2e8ab27cb5e3c4a744dd6bf6ab
SSDEEP

24576:PEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZH: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
4832	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\civtiuw\ImagePath = "C:\\Windows\\SysWOW64\\civtiuw\\vvwhcdbj.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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe

Deletes itself 1 IoCs

pid	Process
2472	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2872	vvwhcdbj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2872 set thread context of 2472	2872	vvwhcdbj.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4704	sc.exe
4336	sc.exe
3556	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2228	3640	WerFault.exe	82
1356	2872	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vvwhcdbj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	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 3640 wrote to memory of 3196	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	86
PID 3640 wrote to memory of 3196	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	86
PID 3640 wrote to memory of 3196	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	86
PID 3640 wrote to memory of 2036	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	88
PID 3640 wrote to memory of 2036	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	88
PID 3640 wrote to memory of 2036	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	88
PID 3640 wrote to memory of 3556	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	90
PID 3640 wrote to memory of 3556	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	90
PID 3640 wrote to memory of 3556	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	90
PID 3640 wrote to memory of 4704	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	92
PID 3640 wrote to memory of 4704	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	92
PID 3640 wrote to memory of 4704	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	92
PID 3640 wrote to memory of 4336	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	94
PID 3640 wrote to memory of 4336	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	94
PID 3640 wrote to memory of 4336	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	94
PID 3640 wrote to memory of 4832	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	97
PID 3640 wrote to memory of 4832	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	97
PID 3640 wrote to memory of 4832	3640	2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe	97
PID 2872 wrote to memory of 2472	2872	vvwhcdbj.exe	102
PID 2872 wrote to memory of 2472	2872	vvwhcdbj.exe	102
PID 2872 wrote to memory of 2472	2872	vvwhcdbj.exe	102
PID 2872 wrote to memory of 2472	2872	vvwhcdbj.exe	102
PID 2872 wrote to memory of 2472	2872	vvwhcdbj.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\civtiuw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3196
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vvwhcdbj.exe" C:\Windows\SysWOW64\civtiuw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create civtiuw binPath= "C:\Windows\SysWOW64\civtiuw\vvwhcdbj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description civtiuw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start civtiuw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4336
- 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:4832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3640 -s 1044
  2⤵
  - Program crash
  PID:2228

C:\Windows\SysWOW64\civtiuw\vvwhcdbj.exe
C:\Windows\SysWOW64\civtiuw\vvwhcdbj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_fab4de48010f51b4aa8aa0751b525553_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2872 -s 512
  2⤵
  - Program crash
  PID:1356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3640 -ip 3640
1⤵
PID:720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2872 -ip 2872
1⤵
PID:412

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\vvwhcdbj.exe

Filesize
13.6MB

MD5
7574adc2062fd2ff323c9c42831b353a

SHA1
7dd99ee1fbf4dbe6134ce9d5186f47a855448062

SHA256
3fee8815070cf83f50ac287097d62423cb5079b9cbf6f4833323f74f26579d34

SHA512
ca8ec50950d34348034c3298aa6367252a6e481b8e3908aed73d861815eed7a4575a025ca749f3c803eb584bbb48ce0c1071d42733c4aa186254f5b34e2b158d

Download Submit
memory/2472-16-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2472-17-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2472-14-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2872-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2872-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2872-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2872-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3640-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3640-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3640-1-0x0000000000460000-0x0000000000560000-memory.dmp

Filesize
1024KB

Download
memory/3640-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3640-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3640-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads