tofsee | d719af4c9c249a50ea42eb6f01f559855748abd528c324358621eee50430bf14

General

Target

2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe
Size

13.6MB
MD5

29e1126fcba68248296bf20009a68bac
SHA1

699dd7a56331e9d5c247f905df57cc08222f897b
SHA256

d719af4c9c249a50ea42eb6f01f559855748abd528c324358621eee50430bf14
SHA512

0d491b7b020e667a648086e348d3f968a9870a11ad92ce189e7979a0e18bbce8107ed3e6e2b6f6de1b2f864155098c9279e8e4fddbdaa2b831343a0370686b49
SSDEEP

24576:t/0dLk3X4ICvkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkL:F0dLk3ohU

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
2964	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\afqnbuep\ImagePath = "C:\\Windows\\SysWOW64\\afqnbuep\\foinfezv.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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe

Deletes itself 1 IoCs

pid	Process
2168	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1388	foinfezv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1388 set thread context of 2168	1388	foinfezv.exe	111

Launches sc.exe 3 IoCs

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

pid	Process
1028	sc.exe
3944	sc.exe
1808	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
3152	3896	WerFault.exe	83
2548	1388	WerFault.exe	104

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	foinfezv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-06_29e1126fcba68248296bf20009a68bac_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3896 wrote to memory of 932	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	93
PID 3896 wrote to memory of 932	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	93
PID 3896 wrote to memory of 932	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	93
PID 3896 wrote to memory of 2472	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	95
PID 3896 wrote to memory of 2472	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	95
PID 3896 wrote to memory of 2472	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	95
PID 3896 wrote to memory of 1028	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	98
PID 3896 wrote to memory of 1028	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	98
PID 3896 wrote to memory of 1028	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	98
PID 3896 wrote to memory of 3944	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	100
PID 3896 wrote to memory of 3944	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	100
PID 3896 wrote to memory of 3944	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	100
PID 3896 wrote to memory of 1808	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	102
PID 3896 wrote to memory of 1808	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	102
PID 3896 wrote to memory of 1808	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	102
PID 3896 wrote to memory of 2964	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	105
PID 3896 wrote to memory of 2964	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	105
PID 3896 wrote to memory of 2964	3896	2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe	105
PID 1388 wrote to memory of 2168	1388	foinfezv.exe	111
PID 1388 wrote to memory of 2168	1388	foinfezv.exe	111
PID 1388 wrote to memory of 2168	1388	foinfezv.exe	111
PID 1388 wrote to memory of 2168	1388	foinfezv.exe	111
PID 1388 wrote to memory of 2168	1388	foinfezv.exe	111

C:\Users\Admin\AppData\Local\Temp\2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\afqnbuep\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\foinfezv.exe" C:\Windows\SysWOW64\afqnbuep\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create afqnbuep binPath= "C:\Windows\SysWOW64\afqnbuep\foinfezv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description afqnbuep "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start afqnbuep
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1808
- 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:2964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 1316
  2⤵
  - Program crash
  PID:3152

C:\Windows\SysWOW64\afqnbuep\foinfezv.exe
C:\Windows\SysWOW64\afqnbuep\foinfezv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-06_29e1126fcba68248296bf20009a68bac_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1388 -s 508
  2⤵
  - Program crash
  PID:2548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3896 -ip 3896
1⤵
PID:544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1388 -ip 1388
1⤵
PID:4556

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\foinfezv.exe

Filesize
10.7MB

MD5
4955e546a85d02c67dc6f40e76a80bcb

SHA1
207573638dfa41140fcdc6270ac81c363f72e025

SHA256
487f94895d30ed2536935d797f882b31908e5068fb198d7d164b928dbfa1bc7b

SHA512
b31b7656dc3dc711db64772974a662bb0dff669fddff40394ed5e34ce2a65e3b0d8f65097e011424d0af5dd9afd3ac886461d760808f75bae57b38a9d41b5937

Download Submit
memory/1388-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1388-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1388-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1388-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2168-14-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/2168-16-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/2168-17-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/3896-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3896-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/3896-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3896-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3896-8-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/3896-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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