tofsee | fc32a308c760d0d4be5240f37b3097fdb19020be48ca74d35d486dd162c32c6e

Analysis

max time kernel
141s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-02-2025 01:39

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe
Size

13.9MB
MD5

26c8894b5154f12ecac0f420d6aaf04d
SHA1

0106252e884d6fe1d9fb36f3fa0562ac8b4d7c44
SHA256

fc32a308c760d0d4be5240f37b3097fdb19020be48ca74d35d486dd162c32c6e
SHA512

1d040702d0a7f604054c14f25ab3c558968513e085c2b9e529b097ff2d17dbd7b66f9e14f6caf0cb7deb6b880096c91575c641293a972c669c66b9f31cc8e552
SSDEEP

24576:UpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttf:goo

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\tewlfwrs = "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
2056	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\tewlfwrs\ImagePath = "C:\\Windows\\SysWOW64\\tewlfwrs\\trabkgvr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1120	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1660	trabkgvr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1660 set thread context of 1120	1660	trabkgvr.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2748	sc.exe
2812	sc.exe
2932	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

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_26c8894b5154f12ecac0f420d6aaf04d_mafia.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	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	trabkgvr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2828 wrote to memory of 2836	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	30
PID 2828 wrote to memory of 2836	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	30
PID 2828 wrote to memory of 2836	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	30
PID 2828 wrote to memory of 2836	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	30
PID 2828 wrote to memory of 2940	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	32
PID 2828 wrote to memory of 2940	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	32
PID 2828 wrote to memory of 2940	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	32
PID 2828 wrote to memory of 2940	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	32
PID 2828 wrote to memory of 2812	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	34
PID 2828 wrote to memory of 2812	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	34
PID 2828 wrote to memory of 2812	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	34
PID 2828 wrote to memory of 2812	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	34
PID 2828 wrote to memory of 2932	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	36
PID 2828 wrote to memory of 2932	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	36
PID 2828 wrote to memory of 2932	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	36
PID 2828 wrote to memory of 2932	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	36
PID 2828 wrote to memory of 2748	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	38
PID 2828 wrote to memory of 2748	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	38
PID 2828 wrote to memory of 2748	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	38
PID 2828 wrote to memory of 2748	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	38
PID 2828 wrote to memory of 2056	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	41
PID 2828 wrote to memory of 2056	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	41
PID 2828 wrote to memory of 2056	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	41
PID 2828 wrote to memory of 2056	2828	2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe	41
PID 1660 wrote to memory of 1120	1660	trabkgvr.exe	43
PID 1660 wrote to memory of 1120	1660	trabkgvr.exe	43
PID 1660 wrote to memory of 1120	1660	trabkgvr.exe	43
PID 1660 wrote to memory of 1120	1660	trabkgvr.exe	43
PID 1660 wrote to memory of 1120	1660	trabkgvr.exe	43
PID 1660 wrote to memory of 1120	1660	trabkgvr.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tewlfwrs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\trabkgvr.exe" C:\Windows\SysWOW64\tewlfwrs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2940
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tewlfwrs binPath= "C:\Windows\SysWOW64\tewlfwrs\trabkgvr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tewlfwrs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tewlfwrs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- 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:2056

C:\Windows\SysWOW64\tewlfwrs\trabkgvr.exe
C:\Windows\SysWOW64\tewlfwrs\trabkgvr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_26c8894b5154f12ecac0f420d6aaf04d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1660
- 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:1120

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
11.2MB

MD5
4145e377a487908328205767d7a54d48

SHA1
eec6859d8ffce4269eb9237807a9f7f8c9c5efd9

SHA256
5c084678ed02b775dbfc706dd36a6b6902c6e283d5bbeefb0df456979ccd0d33

SHA512
1a52b94fceb49994c7864e547f1621af69bdc1621f114dae8a0c46fbc2f5e0e0238cf93a0c0999854a4a1a83f5aa42acf01dc61301975e0b0c1155be8956d1b3

Download Submit
memory/1120-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1120-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1120-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1120-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1120-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1660-16-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2828-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2828-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2828-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2828-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2828-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2828-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads