tofsee | 170e8cb3e4e81ef1e10adbd13e8172334a6ad1f62d7f64b2eb00688eee2abd53

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-01-2025 15:25

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General

Target

2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe
Size

236KB
MD5

bca290cedf0f3ff0b6fcdadb8b561871
SHA1

89efca3114eab03cd160d3dc31c69a29980fc944
SHA256

170e8cb3e4e81ef1e10adbd13e8172334a6ad1f62d7f64b2eb00688eee2abd53
SHA512

cc4d41c3ceffe57a927300a84b022aa9df8dd43ed46f5aafbef17a0a82e91543271ec0eb16da7385ed581a45b899ccff0ddb1c2998c87d72fe5fb2c7c295cda0
SSDEEP

3072:3RaPw6Jy/NyTEIzkzCrcUE1LxCcdtP40NL0aOFL6GpCKIOBvgY21KSt08NUj0DC/:ew68NpzxddVpKV6G7VgRqQdQ

Score

10^/10

tofsee discovery evasion 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

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\cbrdynhs = "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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2880	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\cbrdynhs\ImagePath = "C:\\Windows\\SysWOW64\\cbrdynhs\\mohszhvl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2804	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	mohszhvl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2824 set thread context of 2804	2824	mohszhvl.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2352	sc.exe
2760	sc.exe
2896	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	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	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mohszhvl.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 1968 wrote to memory of 2428	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	30
PID 1968 wrote to memory of 2428	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	30
PID 1968 wrote to memory of 2428	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	30
PID 1968 wrote to memory of 2428	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	30
PID 1968 wrote to memory of 900	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	32
PID 1968 wrote to memory of 900	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	32
PID 1968 wrote to memory of 900	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	32
PID 1968 wrote to memory of 900	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	32
PID 1968 wrote to memory of 2352	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	34
PID 1968 wrote to memory of 2352	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	34
PID 1968 wrote to memory of 2352	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	34
PID 1968 wrote to memory of 2352	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	34
PID 1968 wrote to memory of 2760	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	36
PID 1968 wrote to memory of 2760	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	36
PID 1968 wrote to memory of 2760	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	36
PID 1968 wrote to memory of 2760	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	36
PID 1968 wrote to memory of 2896	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	38
PID 1968 wrote to memory of 2896	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	38
PID 1968 wrote to memory of 2896	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	38
PID 1968 wrote to memory of 2896	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	38
PID 2824 wrote to memory of 2804	2824	mohszhvl.exe	41
PID 2824 wrote to memory of 2804	2824	mohszhvl.exe	41
PID 2824 wrote to memory of 2804	2824	mohszhvl.exe	41
PID 2824 wrote to memory of 2804	2824	mohszhvl.exe	41
PID 2824 wrote to memory of 2804	2824	mohszhvl.exe	41
PID 2824 wrote to memory of 2804	2824	mohszhvl.exe	41
PID 1968 wrote to memory of 2880	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	42
PID 1968 wrote to memory of 2880	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	42
PID 1968 wrote to memory of 2880	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	42
PID 1968 wrote to memory of 2880	1968	2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cbrdynhs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mohszhvl.exe" C:\Windows\SysWOW64\cbrdynhs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cbrdynhs binPath= "C:\Windows\SysWOW64\cbrdynhs\mohszhvl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cbrdynhs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cbrdynhs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- 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:2880

C:\Windows\SysWOW64\cbrdynhs\mohszhvl.exe
C:\Windows\SysWOW64\cbrdynhs\mohszhvl.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-10_bca290cedf0f3ff0b6fcdadb8b561871_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2824
- 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:2804

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\mohszhvl.exe

Filesize
11.2MB

MD5
7752f47fa8a96af72c9837026e0cb16c

SHA1
1ebf28d996177d663e18aebaf2972698a83691f8

SHA256
b41ee5d0cb48ab6b8dafb7f8c95d94a2df55460ab73534d6afb5d58997b6c29f

SHA512
4f18012131ed329647a3aaa2283d7befef7f594a6e7f71b77f98959ae8033e3c5aec0346bd42474fbbbd49ed7086aca30f2d0ba7506a201eeb886d0bc8a57387

Download Submit
memory/1968-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1968-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1968-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1968-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1968-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/1968-14-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2804-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2804-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2824-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads