tofsee | ce095a4e30dda5460968c93f15abe9d6cdce4af2201395dd4b3a60c6105a7c24

General

Target

2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe
Size

10.3MB
MD5

dcaece4ebdb520ecb6aa2823c0c73699
SHA1

eb6cbbf5ce20c6c2ebb9c09579050892272120e1
SHA256

ce095a4e30dda5460968c93f15abe9d6cdce4af2201395dd4b3a60c6105a7c24
SHA512

c1da465a240ca5ecc8db9ee7951f25527962185f991134c8e474b6857a026db5fd3d10cdf6c0fa7d89dd09c148992273f64a28f71b2fcbab708bc55c95299c9f
SSDEEP

49152:RqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPe:RqtYc3r

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
2136	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\owneuvim\ImagePath = "C:\\Windows\\SysWOW64\\owneuvim\\tnnepypr.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe

Deletes itself 1 IoCs

pid	Process
3628	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3516	tnnepypr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3516 set thread context of 3628	3516	tnnepypr.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
4580	sc.exe
3056	sc.exe
4444	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2548	3516	WerFault.exe	92
2576	2872	WerFault.exe	81

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tnnepypr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 4968	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	82
PID 2872 wrote to memory of 4968	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	82
PID 2872 wrote to memory of 4968	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	82
PID 2872 wrote to memory of 1612	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	84
PID 2872 wrote to memory of 1612	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	84
PID 2872 wrote to memory of 1612	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	84
PID 2872 wrote to memory of 4580	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	86
PID 2872 wrote to memory of 4580	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	86
PID 2872 wrote to memory of 4580	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	86
PID 2872 wrote to memory of 3056	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	88
PID 2872 wrote to memory of 3056	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	88
PID 2872 wrote to memory of 3056	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	88
PID 2872 wrote to memory of 4444	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	90
PID 2872 wrote to memory of 4444	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	90
PID 2872 wrote to memory of 4444	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	90
PID 3516 wrote to memory of 3628	3516	tnnepypr.exe	93
PID 3516 wrote to memory of 3628	3516	tnnepypr.exe	93
PID 3516 wrote to memory of 3628	3516	tnnepypr.exe	93
PID 3516 wrote to memory of 3628	3516	tnnepypr.exe	93
PID 3516 wrote to memory of 3628	3516	tnnepypr.exe	93
PID 2872 wrote to memory of 2136	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	97
PID 2872 wrote to memory of 2136	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	97
PID 2872 wrote to memory of 2136	2872	2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\owneuvim\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tnnepypr.exe" C:\Windows\SysWOW64\owneuvim\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create owneuvim binPath= "C:\Windows\SysWOW64\owneuvim\tnnepypr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description owneuvim "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start owneuvim
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4444
- 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:2136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2872 -s 644
  2⤵
  - Program crash
  PID:2576

C:\Windows\SysWOW64\owneuvim\tnnepypr.exe
C:\Windows\SysWOW64\owneuvim\tnnepypr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_dcaece4ebdb520ecb6aa2823c0c73699_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 528
  2⤵
  - Program crash
  PID:2548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3516 -ip 3516
1⤵
PID:1644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2872 -ip 2872
1⤵
PID:452

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
14.1MB

MD5
af9bc789e2264ef558ab7ae6f67eb571

SHA1
93eb9b0485ca532af623101470f3fe9e9e5851f1

SHA256
71ce67d1c51cef93b5055fcd754998dcb5fe4a2196f8b45ba075768492fb525c

SHA512
3d3a33ac75286fc265d7215b94bcb5568c3fc24aeef47b543df1506c671b86180f823148672117cb5e7aac4727b9376fa3710d1cf0f01a7c1022d379e1236f15

Download Submit
memory/2872-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/2872-1-0x0000000002EE0000-0x0000000002FE0000-memory.dmp

Filesize
1024KB

Download
memory/2872-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2872-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2872-12-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/2872-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3516-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3628-8-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/3628-15-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/3628-14-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads