tofsee | 9574a9f69ddd18f7857877c02cc38a6ac7f5a227f678c7510973921f9c621420

General

Target

2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe
Size

13.0MB
MD5

7ca394a6c3fb23cf15f764ea44959924
SHA1

489dc2c85200cd32d3a87c7c2d52710a770bf359
SHA256

9574a9f69ddd18f7857877c02cc38a6ac7f5a227f678c7510973921f9c621420
SHA512

bbf01aa88235c59d9a5e15ea063554ea4bf370b215939d88f56bd935506a3c196468512a783b87abe0ebd6caa2048ec27af38413f7a419262b15a36bc2c10951
SSDEEP

24576:FEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZn:Ofot

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
1984	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\vyqkecyt\ImagePath = "C:\\Windows\\SysWOW64\\vyqkecyt\\tvozgocs.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	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe

Deletes itself 1 IoCs

pid	Process
1376	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3100	tvozgocs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3100 set thread context of 1376	3100	tvozgocs.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4896	sc.exe
456	sc.exe
4484	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1216	3004	WerFault.exe	81
2644	3100	WerFault.exe	92

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	tvozgocs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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 3004 wrote to memory of 4572	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	82
PID 3004 wrote to memory of 4572	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	82
PID 3004 wrote to memory of 4572	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	82
PID 3004 wrote to memory of 4476	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	84
PID 3004 wrote to memory of 4476	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	84
PID 3004 wrote to memory of 4476	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	84
PID 3004 wrote to memory of 4896	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	86
PID 3004 wrote to memory of 4896	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	86
PID 3004 wrote to memory of 4896	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	86
PID 3004 wrote to memory of 456	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	88
PID 3004 wrote to memory of 456	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	88
PID 3004 wrote to memory of 456	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	88
PID 3004 wrote to memory of 4484	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	90
PID 3004 wrote to memory of 4484	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	90
PID 3004 wrote to memory of 4484	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	90
PID 3004 wrote to memory of 1984	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	95
PID 3004 wrote to memory of 1984	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	95
PID 3004 wrote to memory of 1984	3004	2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe	95
PID 3100 wrote to memory of 1376	3100	tvozgocs.exe	102
PID 3100 wrote to memory of 1376	3100	tvozgocs.exe	102
PID 3100 wrote to memory of 1376	3100	tvozgocs.exe	102
PID 3100 wrote to memory of 1376	3100	tvozgocs.exe	102
PID 3100 wrote to memory of 1376	3100	tvozgocs.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vyqkecyt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4572
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tvozgocs.exe" C:\Windows\SysWOW64\vyqkecyt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vyqkecyt binPath= "C:\Windows\SysWOW64\vyqkecyt\tvozgocs.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vyqkecyt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vyqkecyt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4484
- 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:1984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3004 -s 1044
  2⤵
  - Program crash
  PID:1216

C:\Windows\SysWOW64\vyqkecyt\tvozgocs.exe
C:\Windows\SysWOW64\vyqkecyt\tvozgocs.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_7ca394a6c3fb23cf15f764ea44959924_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3100
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3100 -s 508
  2⤵
  - Program crash
  PID:2644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3004 -ip 3004
1⤵
PID:1524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3100 -ip 3100
1⤵
PID:4872

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\tvozgocs.exe

Filesize
13.4MB

MD5
4d737663134a85a158696b60d83e303d

SHA1
797db7456286a548806502c9543e3d26496ceae4

SHA256
4f8c6d59f1d610f7d40e176009ac08d6a68a5892c91f6fd938eb1d7095a30bb5

SHA512
f71276e8bd404002e0238042555a640738c5a108bb62d3895bba53967308e704469cfa440381cc1f682dbecdaeaf352dc98dbe58e054c620259fcd4b59a0358b

Download Submit
memory/1376-14-0x00000000005A0000-0x00000000005B5000-memory.dmp

Filesize
84KB

Download
memory/1376-17-0x00000000005A0000-0x00000000005B5000-memory.dmp

Filesize
84KB

Download
memory/1376-16-0x00000000005A0000-0x00000000005B5000-memory.dmp

Filesize
84KB

Download
memory/3004-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3004-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3004-1-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/3004-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3004-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3004-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3100-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3100-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3100-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3100-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads