tofsee | b4e5b6c2e6a59c349804cf87e5663bbcd50ac96aceaf926526d67398a1610fdb

Analysis

max time kernel
144s
max time network
122s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 01:50

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General

Target

2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe
Size

12.8MB
MD5

294baf6362d4f49cfe0cea1ed29d6345
SHA1

eec8cc0feeb35395e2defd1d53005501d5c1c53b
SHA256

b4e5b6c2e6a59c349804cf87e5663bbcd50ac96aceaf926526d67398a1610fdb
SHA512

9c111d5b6835c36de1ac4411359df8f042b9c90b0b5b30af076225487b7d373f334fa83f5c05f91023f1b47bb09dc5f5bc2a6dbe372a1c6c1310eff2a3a913bd
SSDEEP

24576:mpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttD:qoo9

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\goexxbdt = "0"	svchost.exe

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
1092	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\goexxbdt\ImagePath = "C:\\Windows\\SysWOW64\\goexxbdt\\yssjuduw.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
264	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2736	yssjuduw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2736 set thread context of 264	2736	yssjuduw.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2812	sc.exe
2720	sc.exe
2704	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

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	yssjuduw.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	sc.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	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 1372	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	30
PID 2848 wrote to memory of 1372	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	30
PID 2848 wrote to memory of 1372	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	30
PID 2848 wrote to memory of 1372	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	30
PID 2848 wrote to memory of 2572	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	32
PID 2848 wrote to memory of 2572	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	32
PID 2848 wrote to memory of 2572	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	32
PID 2848 wrote to memory of 2572	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	32
PID 2848 wrote to memory of 2720	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	34
PID 2848 wrote to memory of 2720	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	34
PID 2848 wrote to memory of 2720	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	34
PID 2848 wrote to memory of 2720	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	34
PID 2848 wrote to memory of 2704	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	36
PID 2848 wrote to memory of 2704	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	36
PID 2848 wrote to memory of 2704	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	36
PID 2848 wrote to memory of 2704	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	36
PID 2848 wrote to memory of 2812	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	38
PID 2848 wrote to memory of 2812	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	38
PID 2848 wrote to memory of 2812	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	38
PID 2848 wrote to memory of 2812	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	38
PID 2736 wrote to memory of 264	2736	yssjuduw.exe	41
PID 2736 wrote to memory of 264	2736	yssjuduw.exe	41
PID 2736 wrote to memory of 264	2736	yssjuduw.exe	41
PID 2736 wrote to memory of 264	2736	yssjuduw.exe	41
PID 2736 wrote to memory of 264	2736	yssjuduw.exe	41
PID 2736 wrote to memory of 264	2736	yssjuduw.exe	41
PID 2848 wrote to memory of 1092	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	42
PID 2848 wrote to memory of 1092	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	42
PID 2848 wrote to memory of 1092	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	42
PID 2848 wrote to memory of 1092	2848	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\goexxbdt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yssjuduw.exe" C:\Windows\SysWOW64\goexxbdt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create goexxbdt binPath= "C:\Windows\SysWOW64\goexxbdt\yssjuduw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2720
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description goexxbdt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start goexxbdt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2812
- 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:1092

C:\Windows\SysWOW64\goexxbdt\yssjuduw.exe
C:\Windows\SysWOW64\goexxbdt\yssjuduw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:264

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\yssjuduw.exe

Filesize
12.5MB

MD5
c09b55d8bbaeacec0ef56f0759a4c335

SHA1
d0a1b0e05c61fdd68ff8dfb919236028d2793fd4

SHA256
55c001ac1aedf4e8506bbf4de67171c4c535aea83ee152873ee59d067f453ddf

SHA512
491ba260537c2a1b207a7f654bc3df71138792bb13563538d13dcdfeafb51ee1c5a75934b6c1fcad77e51a086e331837ce6b9b8ab6440a5540e7c9668371baa0

Download Submit
memory/264-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/264-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/264-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/264-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/264-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2736-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2848-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2848-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2848-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/2848-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2848-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2848-14-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads