tofsee | 0bb8c786641edd50ada305f84b274007bc53fbfd4fe1ffc25d88d5aa8c36776b

General

Target

2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe
Size

15.0MB
MD5

92661afbd99d23847a0d397ed66ef9f6
SHA1

0e788a3d9d87ee64e56f4f8c90de78e6cbf9b54f
SHA256

0bb8c786641edd50ada305f84b274007bc53fbfd4fe1ffc25d88d5aa8c36776b
SHA512

5f4a15394a8905838b129554cac1cfc83dcd164fdd68e2ab010cedb9a087bf0ffd0a5a192a30e63f3fb7a9bf27b740e551ee8d76b568b7b3ba2412170fffb55d
SSDEEP

24576:fEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZb:cfot

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
652	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\wtraej\ImagePath = "C:\\Windows\\SysWOW64\\wtraej\\conbmwey.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe

Deletes itself 1 IoCs

pid	Process
3876	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3828	conbmwey.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3828 set thread context of 3876	3828	conbmwey.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4208	sc.exe
3700	sc.exe
3484	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
1116	4760	WerFault.exe	81
312	3828	WerFault.exe	95

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	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_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	conbmwey.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 2140	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	83
PID 4760 wrote to memory of 2140	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	83
PID 4760 wrote to memory of 2140	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	83
PID 4760 wrote to memory of 2180	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	87
PID 4760 wrote to memory of 2180	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	87
PID 4760 wrote to memory of 2180	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	87
PID 4760 wrote to memory of 4208	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	89
PID 4760 wrote to memory of 4208	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	89
PID 4760 wrote to memory of 4208	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	89
PID 4760 wrote to memory of 3700	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	91
PID 4760 wrote to memory of 3700	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	91
PID 4760 wrote to memory of 3700	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	91
PID 4760 wrote to memory of 3484	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	93
PID 4760 wrote to memory of 3484	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	93
PID 4760 wrote to memory of 3484	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	93
PID 4760 wrote to memory of 652	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	96
PID 4760 wrote to memory of 652	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	96
PID 4760 wrote to memory of 652	4760	2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe	96
PID 3828 wrote to memory of 3876	3828	conbmwey.exe	102
PID 3828 wrote to memory of 3876	3828	conbmwey.exe	102
PID 3828 wrote to memory of 3876	3828	conbmwey.exe	102
PID 3828 wrote to memory of 3876	3828	conbmwey.exe	102
PID 3828 wrote to memory of 3876	3828	conbmwey.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wtraej\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2140
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\conbmwey.exe" C:\Windows\SysWOW64\wtraej\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2180
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wtraej binPath= "C:\Windows\SysWOW64\wtraej\conbmwey.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wtraej "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wtraej
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3484
- 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:652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4760 -s 1036
  2⤵
  - Program crash
  PID:1116

C:\Windows\SysWOW64\wtraej\conbmwey.exe
C:\Windows\SysWOW64\wtraej\conbmwey.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_92661afbd99d23847a0d397ed66ef9f6_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3828
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3876
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3828 -s 560
  2⤵
  - Program crash
  PID:312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4760 -ip 4760
1⤵
PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3828 -ip 3828
1⤵
PID:1468

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\conbmwey.exe

Filesize
13.7MB

MD5
1548818a8ca73c6ab34105514dafb7e6

SHA1
79eb3c62134e96674eaf22cfb53045d16ba25f29

SHA256
a5a3f98d16162bf8c4e86911fa98f4ccfd88563cf7bd84377be69999bf8452b3

SHA512
b8b7d5b3cb5b6a37271fd4db2786728595d587726e8ef0a86a44bbc7411aa8fec00efff227333b6b60fffa4892e259a59c6e1430940a917c1b2125b50f3d3459

Download Submit
memory/3828-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3828-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3828-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3828-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3876-14-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/3876-16-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/3876-17-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/4760-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4760-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/4760-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4760-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4760-8-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/4760-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads