tofsee | 490bc8f75eabcae07ac5e9fa5ed53ffcbad759f14ac911066e797e31484e34aa

Analysis

max time kernel
143s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 20:22

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General

Target

2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe
Size

12.3MB
MD5

883021a16023250914bf6e596896bc2b
SHA1

e450db5b3594990d2655a2cac96a412f7138723c
SHA256

490bc8f75eabcae07ac5e9fa5ed53ffcbad759f14ac911066e797e31484e34aa
SHA512

34fd89169b0ec202f7460d41cb29c9ed70a238c8c920b72b24368260df116b38708eace1d235f0c6ad19a9f3699f9f46d104a51deca1a93550c0dd51f6df05c9
SSDEEP

3072:FLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:oOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\nyrrpqmj = "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
2608	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\nyrrpqmj\ImagePath = "C:\\Windows\\SysWOW64\\nyrrpqmj\\ofbizycg.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2572	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2576	ofbizycg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2576 set thread context of 2572	2576	ofbizycg.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2592	sc.exe
2884	sc.exe
2784	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.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	ofbizycg.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 2684	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	30
PID 2744 wrote to memory of 2684	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	30
PID 2744 wrote to memory of 2684	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	30
PID 2744 wrote to memory of 2684	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	30
PID 2744 wrote to memory of 2432	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	32
PID 2744 wrote to memory of 2432	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	32
PID 2744 wrote to memory of 2432	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	32
PID 2744 wrote to memory of 2432	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	32
PID 2744 wrote to memory of 2592	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	34
PID 2744 wrote to memory of 2592	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	34
PID 2744 wrote to memory of 2592	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	34
PID 2744 wrote to memory of 2592	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	34
PID 2744 wrote to memory of 2884	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	36
PID 2744 wrote to memory of 2884	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	36
PID 2744 wrote to memory of 2884	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	36
PID 2744 wrote to memory of 2884	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	36
PID 2744 wrote to memory of 2784	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	38
PID 2744 wrote to memory of 2784	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	38
PID 2744 wrote to memory of 2784	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	38
PID 2744 wrote to memory of 2784	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	38
PID 2744 wrote to memory of 2608	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	41
PID 2744 wrote to memory of 2608	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	41
PID 2744 wrote to memory of 2608	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	41
PID 2744 wrote to memory of 2608	2744	2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe	41
PID 2576 wrote to memory of 2572	2576	ofbizycg.exe	43
PID 2576 wrote to memory of 2572	2576	ofbizycg.exe	43
PID 2576 wrote to memory of 2572	2576	ofbizycg.exe	43
PID 2576 wrote to memory of 2572	2576	ofbizycg.exe	43
PID 2576 wrote to memory of 2572	2576	ofbizycg.exe	43
PID 2576 wrote to memory of 2572	2576	ofbizycg.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nyrrpqmj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ofbizycg.exe" C:\Windows\SysWOW64\nyrrpqmj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nyrrpqmj binPath= "C:\Windows\SysWOW64\nyrrpqmj\ofbizycg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2592
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nyrrpqmj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nyrrpqmj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2784
- 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:2608

C:\Windows\SysWOW64\nyrrpqmj\ofbizycg.exe
C:\Windows\SysWOW64\nyrrpqmj\ofbizycg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_883021a16023250914bf6e596896bc2b_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2576
- 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:2572

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\ofbizycg.exe

Filesize
14.5MB

MD5
88d8cc320b07c6d1ffa93f3d42c170c5

SHA1
e78e92bee9d641eee5df9fb3b844622be8b7ebb2

SHA256
9704dea75c6f47520e6fc2f119d56d2736c0b26c4a0552a12f4eda2ecd006ffc

SHA512
b0bf3535006257e3e44d23248da917018e37cf04c2d3ac67505fe1a125e1d0ae8708a7be2ee08f0a0e3fc787d35891223dbbd3ae7bb70ed47da9773131aac186

Download Submit
memory/2572-15-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2572-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2572-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2572-12-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2572-19-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2576-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2744-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2744-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2744-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2744-9-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/2744-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2744-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2744-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads