tofsee | 7c40fac3721a2914f2a4530d1f1a1502b1a938ab4460b81114a4ffae24a2bc6b

General

Target

2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe
Size

12.3MB
MD5

c08ee0f72d36662052d851b668fd2a14
SHA1

77f6c9794926b8cad6b2347007094a22faedc9b1
SHA256

7c40fac3721a2914f2a4530d1f1a1502b1a938ab4460b81114a4ffae24a2bc6b
SHA512

a5e1193bda4216e99639b847a3cf19712f839e819f0f79e92c918a841f24db1a2b6903f9bdd466f296f28359f18f8caf30e71f3f9d70f7d2d30fadb731185c3c
SSDEEP

24576:R6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ1:4WdLQkf

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
2324	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\trumxekn\ImagePath = "C:\\Windows\\SysWOW64\\trumxekn\\faewmxzx.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-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe

Deletes itself 1 IoCs

pid	Process
4408	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1060	faewmxzx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1060 set thread context of 4408	1060	faewmxzx.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3616	sc.exe
3932	sc.exe
5036	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2720	4960	WerFault.exe	82
5040	1060	WerFault.exe	96

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	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	faewmxzx.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 208	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	86
PID 4960 wrote to memory of 208	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	86
PID 4960 wrote to memory of 208	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	86
PID 4960 wrote to memory of 2548	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	88
PID 4960 wrote to memory of 2548	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	88
PID 4960 wrote to memory of 2548	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	88
PID 4960 wrote to memory of 5036	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	90
PID 4960 wrote to memory of 5036	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	90
PID 4960 wrote to memory of 5036	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	90
PID 4960 wrote to memory of 3616	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	92
PID 4960 wrote to memory of 3616	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	92
PID 4960 wrote to memory of 3616	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	92
PID 4960 wrote to memory of 3932	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	94
PID 4960 wrote to memory of 3932	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	94
PID 4960 wrote to memory of 3932	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	94
PID 4960 wrote to memory of 2324	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	97
PID 4960 wrote to memory of 2324	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	97
PID 4960 wrote to memory of 2324	4960	2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe	97
PID 1060 wrote to memory of 4408	1060	faewmxzx.exe	102
PID 1060 wrote to memory of 4408	1060	faewmxzx.exe	102
PID 1060 wrote to memory of 4408	1060	faewmxzx.exe	102
PID 1060 wrote to memory of 4408	1060	faewmxzx.exe	102
PID 1060 wrote to memory of 4408	1060	faewmxzx.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\trumxekn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\faewmxzx.exe" C:\Windows\SysWOW64\trumxekn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create trumxekn binPath= "C:\Windows\SysWOW64\trumxekn\faewmxzx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description trumxekn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start trumxekn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3932
- 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:2324
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4960 -s 1176
  2⤵
  - Program crash
  PID:2720

C:\Windows\SysWOW64\trumxekn\faewmxzx.exe
C:\Windows\SysWOW64\trumxekn\faewmxzx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_c08ee0f72d36662052d851b668fd2a14_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1060
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 512
  2⤵
  - Program crash
  PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4960 -ip 4960
1⤵
PID:3628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1060 -ip 1060
1⤵
PID:4628

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\faewmxzx.exe

Filesize
10.0MB

MD5
b657a5cbf8feaa5e79a3b07028de0871

SHA1
1e1decd5cd2b55e5572ea549fe92ea71fd04233b

SHA256
6eacf08ddab1bd555269af1aa6c443236c35d43cc11d2b335b4334324b6f8482

SHA512
2e5068319992e81c64e0a46bed22354623ad7ca5a2894e63ec009c52f55441dab16aefe6994582ab4d95429b7fc44768d1abfc271096cb0209252b9851a686a7

Download Submit
memory/1060-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1060-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1060-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1060-19-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4408-14-0x00000000001A0000-0x00000000001B5000-memory.dmp

Filesize
84KB

Download
memory/4408-16-0x00000000001A0000-0x00000000001B5000-memory.dmp

Filesize
84KB

Download
memory/4408-17-0x00000000001A0000-0x00000000001B5000-memory.dmp

Filesize
84KB

Download
memory/4960-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4960-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4960-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4960-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4960-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4960-1-0x0000000000480000-0x0000000000580000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads