tofsee | 4788a7c613284b815b02b29660d175a940ed28822171bf0b4f145404b35a8dd2

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
25-01-2025 18:43

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General

Target

2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe
Size

10.3MB
MD5

5349a8ef8ca967bde36d9261ed712f15
SHA1

cb38207ee1430bc4781a7b2f0d25c3605bea3fa2
SHA256

4788a7c613284b815b02b29660d175a940ed28822171bf0b4f145404b35a8dd2
SHA512

9e558a7835df822e240f690fbfacc7bf94bf94602d43419c3afa6a903d08ec2d0a7985e5537338636bf2950344b5f646cf6fc4c698b2f42b08e5c6ee6d1ec440
SSDEEP

24576:UEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZb:xfot

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\caowxosb = "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
1740	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\caowxosb\ImagePath = "C:\\Windows\\SysWOW64\\caowxosb\\ulhofeim.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1012	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2988	ulhofeim.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2988 set thread context of 1012	2988	ulhofeim.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2504	sc.exe
2640	sc.exe
2540	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_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	ulhofeim.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 2688	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	30
PID 2916 wrote to memory of 2688	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	30
PID 2916 wrote to memory of 2688	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	30
PID 2916 wrote to memory of 2688	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	30
PID 2916 wrote to memory of 2780	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	32
PID 2916 wrote to memory of 2780	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	32
PID 2916 wrote to memory of 2780	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	32
PID 2916 wrote to memory of 2780	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	32
PID 2916 wrote to memory of 2640	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	34
PID 2916 wrote to memory of 2640	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	34
PID 2916 wrote to memory of 2640	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	34
PID 2916 wrote to memory of 2640	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	34
PID 2916 wrote to memory of 2540	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	36
PID 2916 wrote to memory of 2540	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	36
PID 2916 wrote to memory of 2540	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	36
PID 2916 wrote to memory of 2540	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	36
PID 2916 wrote to memory of 2504	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	38
PID 2916 wrote to memory of 2504	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	38
PID 2916 wrote to memory of 2504	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	38
PID 2916 wrote to memory of 2504	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	38
PID 2916 wrote to memory of 1740	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	41
PID 2916 wrote to memory of 1740	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	41
PID 2916 wrote to memory of 1740	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	41
PID 2916 wrote to memory of 1740	2916	2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe	41
PID 2988 wrote to memory of 1012	2988	ulhofeim.exe	43
PID 2988 wrote to memory of 1012	2988	ulhofeim.exe	43
PID 2988 wrote to memory of 1012	2988	ulhofeim.exe	43
PID 2988 wrote to memory of 1012	2988	ulhofeim.exe	43
PID 2988 wrote to memory of 1012	2988	ulhofeim.exe	43
PID 2988 wrote to memory of 1012	2988	ulhofeim.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\caowxosb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2688
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ulhofeim.exe" C:\Windows\SysWOW64\caowxosb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create caowxosb binPath= "C:\Windows\SysWOW64\caowxosb\ulhofeim.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description caowxosb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start caowxosb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2504
- 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:1740

C:\Windows\SysWOW64\caowxosb\ulhofeim.exe
C:\Windows\SysWOW64\caowxosb\ulhofeim.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_5349a8ef8ca967bde36d9261ed712f15_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2988
- 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:1012

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\ulhofeim.exe

Filesize
11.6MB

MD5
2d84a5bcbb63bc4fae4780597869d1f0

SHA1
97b79d13aff357d552a8141943ae413c9443baaa

SHA256
18528d246b869238917223e676695f919aeced6118582a933734961c060797da

SHA512
7087493942c3f05105506b30dc5090a559998cad1e33e0d2f8ab12cfc20b7e8a275fb2b6a7e7ffba00af486fa7033a2cec89eadfed43316c9b5143a401f869dd

Download Submit
memory/1012-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1012-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1012-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1012-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1012-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2916-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2916-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2916-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2916-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2916-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2916-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download
memory/2988-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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