tofsee | 717237d3bba5bb7cd3cc3959b1a0fc00922b8a366f6884ec335829233a18cb8d

General

Target

2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe
Size

13.3MB
MD5

7758684391ea7ff786b6a68acde585e1
SHA1

eabe1ed0a522ebae1925df9cae1970e72850635a
SHA256

717237d3bba5bb7cd3cc3959b1a0fc00922b8a366f6884ec335829233a18cb8d
SHA512

91e5992cdcb921fbc8e0eabf1f89be84bd33a18f30b98c9f39837edbfd92c19781170e3524d5d6bc97767fa258adfc4f296443a2fb19e4d6b1800bd73b35891b
SSDEEP

3072:nLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:+OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
768	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\fhglkcjv\ImagePath = "C:\\Windows\\SysWOW64\\fhglkcjv\\zzalghfn.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-1-5-21-70482961-775596374-3727440602-1000\Control Panel\International\Geo\Nation	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe

Deletes itself 1 IoCs

pid	Process
2448	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
872	zzalghfn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 872 set thread context of 2448	872	zzalghfn.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
2776	sc.exe
2760	sc.exe
1696	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
4084	388	WerFault.exe	82
4332	872	WerFault.exe	99

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	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	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zzalghfn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 388 wrote to memory of 1924	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	89
PID 388 wrote to memory of 1924	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	89
PID 388 wrote to memory of 1924	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	89
PID 388 wrote to memory of 3892	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	91
PID 388 wrote to memory of 3892	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	91
PID 388 wrote to memory of 3892	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	91
PID 388 wrote to memory of 2776	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	93
PID 388 wrote to memory of 2776	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	93
PID 388 wrote to memory of 2776	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	93
PID 388 wrote to memory of 2760	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	95
PID 388 wrote to memory of 2760	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	95
PID 388 wrote to memory of 2760	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	95
PID 388 wrote to memory of 1696	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	97
PID 388 wrote to memory of 1696	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	97
PID 388 wrote to memory of 1696	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	97
PID 388 wrote to memory of 768	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	100
PID 388 wrote to memory of 768	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	100
PID 388 wrote to memory of 768	388	2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe	100
PID 872 wrote to memory of 2448	872	zzalghfn.exe	105
PID 872 wrote to memory of 2448	872	zzalghfn.exe	105
PID 872 wrote to memory of 2448	872	zzalghfn.exe	105
PID 872 wrote to memory of 2448	872	zzalghfn.exe	105
PID 872 wrote to memory of 2448	872	zzalghfn.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fhglkcjv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zzalghfn.exe" C:\Windows\SysWOW64\fhglkcjv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fhglkcjv binPath= "C:\Windows\SysWOW64\fhglkcjv\zzalghfn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2776
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fhglkcjv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fhglkcjv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1696
- 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:768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 388 -s 1036
  2⤵
  - Program crash
  PID:4084

C:\Windows\SysWOW64\fhglkcjv\zzalghfn.exe
C:\Windows\SysWOW64\fhglkcjv\zzalghfn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_7758684391ea7ff786b6a68acde585e1_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:872
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 508
  2⤵
  - Program crash
  PID:4332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 388 -ip 388
1⤵
PID:4604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 872 -ip 872
1⤵
PID:3604

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\zzalghfn.exe

Filesize
11.7MB

MD5
d86fc9042dc87dc260ebc6aba1cca2a9

SHA1
781b9b2a4a7f84bdc5129b390f5119b47392bf0f

SHA256
084c094e5f485885ffc27412ba8085d325c45e169bcf4fcdee5bca1c264fdf65

SHA512
c61c3e80794fff18819274f067dfa70a5a6cfa0a71f63ef48a043200e4bdf710041fa2467ead3d1fc7af2d226b81750335f2021fe12dc39c41ec72ffda72fba0

Download Submit
memory/388-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/388-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/388-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/388-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/388-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/388-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/872-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/872-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/872-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/872-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2448-14-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download
memory/2448-16-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download
memory/2448-17-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads