tofsee | a01882ff2f939a444df6494cb3ad2a212b1829f81f697e01feda79d3cc51086f

General

Target
2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe
Size 12.7MB
Sample240809-xqq93aybkb
SHA256 a01882ff2f939a444df6494cb3ad2a212b1829f81f697e01feda79d3cc51086f
MD5 fb7c08daf1f168a8464a5f9f76db9fcb
SHA1 46503fe1fdcda2223be7de205575e6ed3d39fac9
SHA512 652c80c8a08b66204a2096669340e8863b002ae210f57225417231fb8c38a165ba6561b2edcb3e36eb2c71ba71252411b993efe6cb99f7a26e53a5c7416ca5fa
SSDEEP 6144:n+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:n+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee discovery evasion 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
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4412	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\yygzderv\ImagePath = "C:\\Windows\\SysWOW64\\yygzderv\\lsffitlg.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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe

Deletes itself 1 IoCs

pid	Process
4056	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4800	lsffitlg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4800 set thread context of 4056	4800	lsffitlg.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
1548	sc.exe
2496	sc.exe
1036	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

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	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.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	lsffitlg.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 384 wrote to memory of 3192	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	86
PID 384 wrote to memory of 3192	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	86
PID 384 wrote to memory of 3192	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	86
PID 384 wrote to memory of 1708	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	88
PID 384 wrote to memory of 1708	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	88
PID 384 wrote to memory of 1708	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	88
PID 384 wrote to memory of 1036	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	90
PID 384 wrote to memory of 1036	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	90
PID 384 wrote to memory of 1036	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	90
PID 384 wrote to memory of 1548	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	92
PID 384 wrote to memory of 1548	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	92
PID 384 wrote to memory of 1548	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	92
PID 384 wrote to memory of 2496	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	94
PID 384 wrote to memory of 2496	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	94
PID 384 wrote to memory of 2496	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	94
PID 384 wrote to memory of 4412	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	97
PID 384 wrote to memory of 4412	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	97
PID 384 wrote to memory of 4412	384	2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe	97
PID 4800 wrote to memory of 4056	4800	lsffitlg.exe	99
PID 4800 wrote to memory of 4056	4800	lsffitlg.exe	99
PID 4800 wrote to memory of 4056	4800	lsffitlg.exe	99
PID 4800 wrote to memory of 4056	4800	lsffitlg.exe	99
PID 4800 wrote to memory of 4056	4800	lsffitlg.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yygzderv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3192
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lsffitlg.exe" C:\Windows\SysWOW64\yygzderv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yygzderv binPath= "C:\Windows\SysWOW64\yygzderv\lsffitlg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yygzderv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yygzderv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2496
- 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:4412

C:\Windows\SysWOW64\yygzderv\lsffitlg.exe
C:\Windows\SysWOW64\yygzderv\lsffitlg.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-08-09_fb7c08daf1f168a8464a5f9f76db9fcb_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4056

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

lsffitlg.exe

Path C:\Users\Admin\AppData\Local\Temp\lsffitlg.exe
Size 13.3MB
SHA256 058288b0127106e3cbe22a494442e9f9d8bb3947f19a5b3e44974f05066ff2cb
MD5 af3476f2e4789d3e20c91ee1c74ffd85
SHA1 6376961d67dc694f1841a2a9e451c18d4ce01171
SHA512 a6ac34899ef39cfff22b638585157cbce9a5ffa8b4f84864010060341b45b06ec360ab892e839e7087e1181d5d32d1657e088067abc6f561328b9f5d29a4aa80
SSDEEP 6144:U+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:U+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

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memory/384-1-0x0000000000570000-0x0000000000670000-memory.dmp

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memory/384-2-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/384-7-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/384-6-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/4056-9-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4056-14-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4056-15-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4800-11-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/4800-10-0x0000000000400000-0x000000000051A000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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