tofsee | 6f0e1e995f076fae089a915ed7cf6063a12c9ea942979da0fa1e07b94e29169a

General

Target

2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe
Size

10.4MB
MD5

ea6a79472c1a6baf04ad2dd54187b0f8
SHA1

36f78e2b7ca99d0ab92a2f15f101624845a41bcb
SHA256

6f0e1e995f076fae089a915ed7cf6063a12c9ea942979da0fa1e07b94e29169a
SHA512

8d8c0892601deaba2ad3c8abc6cb4e9f84c8fa0c0a400471906571f314729ee02e1018033c093ee4a067c13439b53092fbc78cba59f766731e77c9ffc44fd51c
SSDEEP

3072:tLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:wOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
3960	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\mfivljc\ImagePath = "C:\\Windows\\SysWOW64\\mfivljc\\evryposw.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe

Deletes itself 1 IoCs

pid	Process
3608	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2340	evryposw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2340 set thread context of 3608	2340	evryposw.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
5092	sc.exe
944	sc.exe
3196	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
3320	2664	WerFault.exe	84
452	2340	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	netsh.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	evryposw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.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 2664 wrote to memory of 3728	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	86
PID 2664 wrote to memory of 3728	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	86
PID 2664 wrote to memory of 3728	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	86
PID 2664 wrote to memory of 4488	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	88
PID 2664 wrote to memory of 4488	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	88
PID 2664 wrote to memory of 4488	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	88
PID 2664 wrote to memory of 3196	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	90
PID 2664 wrote to memory of 3196	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	90
PID 2664 wrote to memory of 3196	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	90
PID 2664 wrote to memory of 5092	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	92
PID 2664 wrote to memory of 5092	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	92
PID 2664 wrote to memory of 5092	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	92
PID 2664 wrote to memory of 944	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	94
PID 2664 wrote to memory of 944	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	94
PID 2664 wrote to memory of 944	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	94
PID 2664 wrote to memory of 3960	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	97
PID 2664 wrote to memory of 3960	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	97
PID 2664 wrote to memory of 3960	2664	2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe	97
PID 2340 wrote to memory of 3608	2340	evryposw.exe	105
PID 2340 wrote to memory of 3608	2340	evryposw.exe	105
PID 2340 wrote to memory of 3608	2340	evryposw.exe	105
PID 2340 wrote to memory of 3608	2340	evryposw.exe	105
PID 2340 wrote to memory of 3608	2340	evryposw.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2664
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mfivljc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\evryposw.exe" C:\Windows\SysWOW64\mfivljc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mfivljc binPath= "C:\Windows\SysWOW64\mfivljc\evryposw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3196
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mfivljc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5092
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mfivljc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:944
- 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:3960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2664 -s 1256
  2⤵
  - Program crash
  PID:3320

C:\Windows\SysWOW64\mfivljc\evryposw.exe
C:\Windows\SysWOW64\mfivljc\evryposw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-22_ea6a79472c1a6baf04ad2dd54187b0f8_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2340 -s 528
  2⤵
  - Program crash
  PID:452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2664 -ip 2664
1⤵
PID:3676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2340 -ip 2340
1⤵
PID:1936

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\evryposw.exe

Filesize
13.6MB

MD5
25eb8ef958ab131de9e2b2870f8ec558

SHA1
7a8d95ff068172bc9841449ae341ca987ad766b0

SHA256
7957930e25da13042f5d48070555184786fc609e833f075e3cb415fa539ec71f

SHA512
cc5ac2f822983fa24930ccf8b89f56d67f55655c6f17262b0916175bb75071db42b26be2b70d192aed929eae10fd77d34f596a4a8fb29ef201d6c7ede35b2c57

Download Submit
memory/2340-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2340-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2340-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2340-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2664-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2664-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2664-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2664-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2664-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2664-1-0x0000000000570000-0x0000000000670000-memory.dmp

Filesize
1024KB

Download
memory/3608-14-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/3608-16-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/3608-17-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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