tofsee | 3731776b9bb93158e5eeaf11d9d13588fd9509d0879fad0fc6aff8a20c6ce6d2

Analysis

max time kernel
146s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-02-2025 14:38

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General

Target

2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe
Size

11.6MB
MD5

baa3d4ecef961095880f238de0e0be22
SHA1

c59ca1d96a298bb7cd32d8e74b5f0e6b9a8ec2c3
SHA256

3731776b9bb93158e5eeaf11d9d13588fd9509d0879fad0fc6aff8a20c6ce6d2
SHA512

9967fd6125d449931142378d77af25f8ef3edf7eab6341ecdef79ed6cb7c7395b216aa59768471dcd105150615e4f78239be45e4a7ba4dbed4ec2b524df08c75
SSDEEP

49152:GqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:GqtYc3

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\vjdczelj = "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
2856	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\vjdczelj\ImagePath = "C:\\Windows\\SysWOW64\\vjdczelj\\ofnlvqxl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2476	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	ofnlvqxl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 2476	2820	ofnlvqxl.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2320	sc.exe
2208	sc.exe
2492	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	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	ofnlvqxl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2504	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	30
PID 2684 wrote to memory of 2504	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	30
PID 2684 wrote to memory of 2504	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	30
PID 2684 wrote to memory of 2504	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	30
PID 2684 wrote to memory of 2364	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	32
PID 2684 wrote to memory of 2364	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	32
PID 2684 wrote to memory of 2364	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	32
PID 2684 wrote to memory of 2364	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	32
PID 2684 wrote to memory of 2320	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	34
PID 2684 wrote to memory of 2320	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	34
PID 2684 wrote to memory of 2320	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	34
PID 2684 wrote to memory of 2320	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	34
PID 2684 wrote to memory of 2208	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	36
PID 2684 wrote to memory of 2208	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	36
PID 2684 wrote to memory of 2208	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	36
PID 2684 wrote to memory of 2208	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	36
PID 2684 wrote to memory of 2492	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	38
PID 2684 wrote to memory of 2492	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	38
PID 2684 wrote to memory of 2492	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	38
PID 2684 wrote to memory of 2492	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	38
PID 2684 wrote to memory of 2856	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	41
PID 2684 wrote to memory of 2856	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	41
PID 2684 wrote to memory of 2856	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	41
PID 2684 wrote to memory of 2856	2684	2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe	41
PID 2820 wrote to memory of 2476	2820	ofnlvqxl.exe	43
PID 2820 wrote to memory of 2476	2820	ofnlvqxl.exe	43
PID 2820 wrote to memory of 2476	2820	ofnlvqxl.exe	43
PID 2820 wrote to memory of 2476	2820	ofnlvqxl.exe	43
PID 2820 wrote to memory of 2476	2820	ofnlvqxl.exe	43
PID 2820 wrote to memory of 2476	2820	ofnlvqxl.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vjdczelj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ofnlvqxl.exe" C:\Windows\SysWOW64\vjdczelj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vjdczelj binPath= "C:\Windows\SysWOW64\vjdczelj\ofnlvqxl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vjdczelj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vjdczelj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2492
- 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:2856

C:\Windows\SysWOW64\vjdczelj\ofnlvqxl.exe
C:\Windows\SysWOW64\vjdczelj\ofnlvqxl.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_baa3d4ecef961095880f238de0e0be22_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- 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:2476

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\ofnlvqxl.exe

Filesize
13.2MB

MD5
ccfdd3b3bd716781c58f384e57832015

SHA1
16cbe22c63946bab54a091bbc868f5a1029bf817

SHA256
587d46422210f07b6fa947c32729635b21defda03a4030132ca3a4ac6b6bdd80

SHA512
51ce7ef3d59287d5aa22c98c56e96018d19308cdb12d4be05d1602cd7dabbb17269c9579dbad6907436dc8a5312f92f753f7463890a005dbdc0a2c48dca0e177

Download Submit
memory/2476-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2476-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2476-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2476-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2476-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2684-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2684-1-0x0000000002EF0000-0x0000000002FF0000-memory.dmp

Filesize
1024KB

Download
memory/2684-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2684-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2684-8-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2684-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2820-17-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads