tofsee | ba2d6e98aa3eecb49c8f607224c64c4d6d0af080244f2320d81fdcc926452d2e

General

Target

2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe
Size

11.2MB
MD5

2dfe303a8bce485655bbee496bdda343
SHA1

879b61d37204ee1b2bb55674e2bc2b187c6f57a9
SHA256

ba2d6e98aa3eecb49c8f607224c64c4d6d0af080244f2320d81fdcc926452d2e
SHA512

3c5c0ab522de386301c2275358ee1dda2a7e285e8b19ad32f249f26eb8c5b91ba65a46d12d1ad1dcc0b56eff4f455b8833795a5829ca85a7f5edef912b95a13f
SSDEEP

24576:GpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttl:Koo

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
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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1488	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\isnpucu\ImagePath = "C:\\Windows\\SysWOW64\\isnpucu\\nhhyjsjl.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	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe

Deletes itself 1 IoCs

pid	Process
1356	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3196	nhhyjsjl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3196 set thread context of 1356	3196	nhhyjsjl.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
3704	sc.exe
4452	sc.exe
4104	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
3960	3108	WerFault.exe	82
2940	3196	WerFault.exe	98

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	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	nhhyjsjl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 2452	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	84
PID 3108 wrote to memory of 2452	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	84
PID 3108 wrote to memory of 2452	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	84
PID 3108 wrote to memory of 1984	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	86
PID 3108 wrote to memory of 1984	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	86
PID 3108 wrote to memory of 1984	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	86
PID 3108 wrote to memory of 3704	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	88
PID 3108 wrote to memory of 3704	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	88
PID 3108 wrote to memory of 3704	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	88
PID 3108 wrote to memory of 4452	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	92
PID 3108 wrote to memory of 4452	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	92
PID 3108 wrote to memory of 4452	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	92
PID 3108 wrote to memory of 4104	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	94
PID 3108 wrote to memory of 4104	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	94
PID 3108 wrote to memory of 4104	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	94
PID 3108 wrote to memory of 1488	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	100
PID 3108 wrote to memory of 1488	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	100
PID 3108 wrote to memory of 1488	3108	2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe	100
PID 3196 wrote to memory of 1356	3196	nhhyjsjl.exe	107
PID 3196 wrote to memory of 1356	3196	nhhyjsjl.exe	107
PID 3196 wrote to memory of 1356	3196	nhhyjsjl.exe	107
PID 3196 wrote to memory of 1356	3196	nhhyjsjl.exe	107
PID 3196 wrote to memory of 1356	3196	nhhyjsjl.exe	107

C:\Users\Admin\AppData\Local\Temp\2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\isnpucu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2452
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nhhyjsjl.exe" C:\Windows\SysWOW64\isnpucu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create isnpucu binPath= "C:\Windows\SysWOW64\isnpucu\nhhyjsjl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description isnpucu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start isnpucu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4104
- 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:1488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3108 -s 1036
  2⤵
  - Program crash
  PID:3960

C:\Windows\SysWOW64\isnpucu\nhhyjsjl.exe
C:\Windows\SysWOW64\isnpucu\nhhyjsjl.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-11_2dfe303a8bce485655bbee496bdda343_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3196
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 560
  2⤵
  - Program crash
  PID:2940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3108 -ip 3108
1⤵
PID:2160

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3196 -ip 3196
1⤵
PID:4792

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\nhhyjsjl.exe

Filesize
13.8MB

MD5
c3d15efb4dc2958aafbb746dc81d3067

SHA1
7b5067ec3764f9f15ba2ff82717cc7a3cb263d4d

SHA256
b609fd2d6463064ee57a1ff69de20dcf4c58b1f7a6c55933ca703afc784d30ac

SHA512
e54d1edfa8f81b397a77d4aa9d2488f2bfd5fb2d443fda1e6132aaa0555746b78c678003522f3d3023a03bceea24614d394a211d5e09a65eb06c5ddba9067b15

Download Submit
memory/1356-16-0x0000000000600000-0x0000000000615000-memory.dmp

Filesize
84KB

Download
memory/1356-17-0x0000000000600000-0x0000000000615000-memory.dmp

Filesize
84KB

Download
memory/1356-14-0x0000000000600000-0x0000000000615000-memory.dmp

Filesize
84KB

Download
memory/3108-8-0x00000000005B0000-0x00000000005C3000-memory.dmp

Filesize
76KB

Download
memory/3108-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3108-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/3108-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3108-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3108-2-0x00000000005B0000-0x00000000005C3000-memory.dmp

Filesize
76KB

Download
memory/3196-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3196-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3196-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3196-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads