tofsee | b73931a4ef9966981cb28e331ef0979d79df0168331b7d176b089a3bcc7ae343

Analysis

max time kernel
144s
max time network
118s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29/01/2025, 07:06

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General

Target

2025-01-29_73adee93e8587e719784949652006c31_mafia.exe
Size

12.9MB
MD5

73adee93e8587e719784949652006c31
SHA1

ffc4181154c05cdfa90d8eb805bf41ebbc549e22
SHA256

b73931a4ef9966981cb28e331ef0979d79df0168331b7d176b089a3bcc7ae343
SHA512

9d676e1a239fe77ec86cdab963ec54f92600795c2ac11b0bb57e58270b250f6148808d94893cf3defaa60db1233feaa6f85049af97846f37113f96f6cc921c8e
SSDEEP

3072:9LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/b:AOMdRQr7OB0ypmMXnl8XEPM3noSWOCW

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\fxkjrxqt = "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
2708	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\fxkjrxqt\ImagePath = "C:\\Windows\\SysWOW64\\fxkjrxqt\\njbbynma.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2808	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2772	njbbynma.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2772 set thread context of 2808	2772	njbbynma.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2720	sc.exe
2932	sc.exe
2796	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	njbbynma.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-29_73adee93e8587e719784949652006c31_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2844	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	31
PID 2224 wrote to memory of 2844	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	31
PID 2224 wrote to memory of 2844	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	31
PID 2224 wrote to memory of 2844	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	31
PID 2224 wrote to memory of 2788	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	33
PID 2224 wrote to memory of 2788	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	33
PID 2224 wrote to memory of 2788	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	33
PID 2224 wrote to memory of 2788	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	33
PID 2224 wrote to memory of 2932	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	35
PID 2224 wrote to memory of 2932	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	35
PID 2224 wrote to memory of 2932	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	35
PID 2224 wrote to memory of 2932	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	35
PID 2224 wrote to memory of 2796	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	37
PID 2224 wrote to memory of 2796	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	37
PID 2224 wrote to memory of 2796	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	37
PID 2224 wrote to memory of 2796	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	37
PID 2224 wrote to memory of 2720	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	39
PID 2224 wrote to memory of 2720	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	39
PID 2224 wrote to memory of 2720	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	39
PID 2224 wrote to memory of 2720	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	39
PID 2772 wrote to memory of 2808	2772	njbbynma.exe	42
PID 2772 wrote to memory of 2808	2772	njbbynma.exe	42
PID 2772 wrote to memory of 2808	2772	njbbynma.exe	42
PID 2772 wrote to memory of 2808	2772	njbbynma.exe	42
PID 2772 wrote to memory of 2808	2772	njbbynma.exe	42
PID 2772 wrote to memory of 2808	2772	njbbynma.exe	42
PID 2224 wrote to memory of 2708	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	43
PID 2224 wrote to memory of 2708	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	43
PID 2224 wrote to memory of 2708	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	43
PID 2224 wrote to memory of 2708	2224	2025-01-29_73adee93e8587e719784949652006c31_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-29_73adee93e8587e719784949652006c31_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-29_73adee93e8587e719784949652006c31_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fxkjrxqt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\njbbynma.exe" C:\Windows\SysWOW64\fxkjrxqt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fxkjrxqt binPath= "C:\Windows\SysWOW64\fxkjrxqt\njbbynma.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-29_73adee93e8587e719784949652006c31_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fxkjrxqt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fxkjrxqt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2720
- 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:2708

C:\Windows\SysWOW64\fxkjrxqt\njbbynma.exe
C:\Windows\SysWOW64\fxkjrxqt\njbbynma.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-29_73adee93e8587e719784949652006c31_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- 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:2808

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\njbbynma.exe

Filesize
14.0MB

MD5
2c3d75af6ea34cd5d73c724a784dd713

SHA1
27c84120c634ae63971706ab7763e2cf7f2ca92e

SHA256
7f9d7f603bb8d2f4f81cf95c077361984eb2ebd1fa90d68ba8267fc4e2f47a62

SHA512
9777e4c964132a70e1576ceffddc542167d3739d4863ab6a33883acf448663ae82f1c9fb429caa697b814f68a76eb55f9365dfe678a2b7e970cf106223df7409

Download Submit
memory/2224-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2224-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2224-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/2224-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2224-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2224-16-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/2224-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2772-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2808-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2808-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2808-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2808-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2808-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads