tofsee | 9ca38ed1ee878df070d23628952798e849a0d318076c5d75f5c0448e8f409555

Analysis

max time kernel
144s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 20:13

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General

Target

2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe
Size

12.6MB
MD5

615c2492f84986c694f0461bab254e8a
SHA1

aed1a2fd03893bd58a2113a16e2991cb764db4ea
SHA256

9ca38ed1ee878df070d23628952798e849a0d318076c5d75f5c0448e8f409555
SHA512

7894f0cd280b27a5b6c142f7824aa301e2e6008bc8bd6dd1498d00719d30df782c74324494b6ae8319b17b844b3cd34c2037bf57e3a9ab635d194e1861c0d98f
SSDEEP

24576:3EfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ9:Ufot

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\dcvjbygv = "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
2664	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\dcvjbygv\ImagePath = "C:\\Windows\\SysWOW64\\dcvjbygv\\bxppmbao.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2268	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2784	bxppmbao.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2784 set thread context of 2268	2784	bxppmbao.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
1684	sc.exe
2776	sc.exe
2868	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bxppmbao.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_615c2492f84986c694f0461bab254e8a_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 2552	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	30
PID 1752 wrote to memory of 2552	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	30
PID 1752 wrote to memory of 2552	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	30
PID 1752 wrote to memory of 2552	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	30
PID 1752 wrote to memory of 1760	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	32
PID 1752 wrote to memory of 1760	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	32
PID 1752 wrote to memory of 1760	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	32
PID 1752 wrote to memory of 1760	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	32
PID 1752 wrote to memory of 1684	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	34
PID 1752 wrote to memory of 1684	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	34
PID 1752 wrote to memory of 1684	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	34
PID 1752 wrote to memory of 1684	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	34
PID 1752 wrote to memory of 2776	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	36
PID 1752 wrote to memory of 2776	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	36
PID 1752 wrote to memory of 2776	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	36
PID 1752 wrote to memory of 2776	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	36
PID 1752 wrote to memory of 2868	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	38
PID 1752 wrote to memory of 2868	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	38
PID 1752 wrote to memory of 2868	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	38
PID 1752 wrote to memory of 2868	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	38
PID 2784 wrote to memory of 2268	2784	bxppmbao.exe	41
PID 2784 wrote to memory of 2268	2784	bxppmbao.exe	41
PID 2784 wrote to memory of 2268	2784	bxppmbao.exe	41
PID 2784 wrote to memory of 2268	2784	bxppmbao.exe	41
PID 2784 wrote to memory of 2268	2784	bxppmbao.exe	41
PID 2784 wrote to memory of 2268	2784	bxppmbao.exe	41
PID 1752 wrote to memory of 2664	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	42
PID 1752 wrote to memory of 2664	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	42
PID 1752 wrote to memory of 2664	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	42
PID 1752 wrote to memory of 2664	1752	2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dcvjbygv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bxppmbao.exe" C:\Windows\SysWOW64\dcvjbygv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dcvjbygv binPath= "C:\Windows\SysWOW64\dcvjbygv\bxppmbao.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dcvjbygv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2776
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dcvjbygv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- 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:2664

C:\Windows\SysWOW64\dcvjbygv\bxppmbao.exe
C:\Windows\SysWOW64\dcvjbygv\bxppmbao.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_615c2492f84986c694f0461bab254e8a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2784
- 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:2268

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\bxppmbao.exe

Filesize
14.7MB

MD5
139acddc868595457fe1d46e5dbb3d13

SHA1
48e472d5f78e7c585bfb137fc273595fb61d5475

SHA256
ddfc71ea3f569f232b558b53020f32115aceb392f7d6f9c1ee1b66de13dd91d7

SHA512
ca7cdd1a887fea15ec940d97008b22638af7ece5d812c78e5319e312aad7b7b4f5e38146632a4fb996f8e705d664c768e27b30de86f5e19944489b98a19c9da1

Download Submit
memory/1752-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1752-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1752-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1752-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1752-1-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/1752-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2268-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2268-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2268-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2268-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2268-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2784-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads