tofsee | d1f8162cc1d9a27ebd286bb30b0bc208bd395d26dd859be6635a071f0bc8940b

General

Target

2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe
Size

13.8MB
MD5

0bc24556871b43248cc95e8fa707217d
SHA1

1d6f337f491d57265393cdc0d5bd8bd6757281de
SHA256

d1f8162cc1d9a27ebd286bb30b0bc208bd395d26dd859be6635a071f0bc8940b
SHA512

adb5ba1a2e4dd6e90d4b615ed72e0c530435437291cb37a3a99a2c7c2b3f72b552c1ea0583bb6dc32e2df4c84e54bccf68663f687ce1f3919ff3cf9257ca53d1
SSDEEP

49152:BqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:BqtYc3

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
1796	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\twdpyncl\ImagePath = "C:\\Windows\\SysWOW64\\twdpyncl\\pysxpojf.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	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe

Deletes itself 1 IoCs

pid	Process
2668	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3840	pysxpojf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3840 set thread context of 2668	3840	pysxpojf.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
4300	sc.exe
228	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 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
1840	3840	WerFault.exe	95
2704	4072	WerFault.exe	82

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	pysxpojf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_0bc24556871b43248cc95e8fa707217d_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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4072 wrote to memory of 4412	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	85
PID 4072 wrote to memory of 4412	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	85
PID 4072 wrote to memory of 4412	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	85
PID 4072 wrote to memory of 3672	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	87
PID 4072 wrote to memory of 3672	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	87
PID 4072 wrote to memory of 3672	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	87
PID 4072 wrote to memory of 4300	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	89
PID 4072 wrote to memory of 4300	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	89
PID 4072 wrote to memory of 4300	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	89
PID 4072 wrote to memory of 228	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	91
PID 4072 wrote to memory of 228	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	91
PID 4072 wrote to memory of 228	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	91
PID 4072 wrote to memory of 4104	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	93
PID 4072 wrote to memory of 4104	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	93
PID 4072 wrote to memory of 4104	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	93
PID 4072 wrote to memory of 1796	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	96
PID 4072 wrote to memory of 1796	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	96
PID 4072 wrote to memory of 1796	4072	2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe	96
PID 3840 wrote to memory of 2668	3840	pysxpojf.exe	97
PID 3840 wrote to memory of 2668	3840	pysxpojf.exe	97
PID 3840 wrote to memory of 2668	3840	pysxpojf.exe	97
PID 3840 wrote to memory of 2668	3840	pysxpojf.exe	97
PID 3840 wrote to memory of 2668	3840	pysxpojf.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\twdpyncl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pysxpojf.exe" C:\Windows\SysWOW64\twdpyncl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create twdpyncl binPath= "C:\Windows\SysWOW64\twdpyncl\pysxpojf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4300
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description twdpyncl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start twdpyncl
  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:1796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4072 -s 1044
  2⤵
  - Program crash
  PID:2704

C:\Windows\SysWOW64\twdpyncl\pysxpojf.exe
C:\Windows\SysWOW64\twdpyncl\pysxpojf.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0bc24556871b43248cc95e8fa707217d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3840
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2668
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3840 -s 512
  2⤵
  - Program crash
  PID:1840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4072 -ip 4072
1⤵
PID:4200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3840 -ip 3840
1⤵
PID:4992

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\pysxpojf.exe

Filesize
11.4MB

MD5
f1eef15a8c986a3a43cd30ef3619213d

SHA1
cb768efab2b228cef24172f64fb7aca5839f3644

SHA256
312bd7ed5f0dee887fdc02034a49cd2846f8c04941fe704b654e1a6fa466bed7

SHA512
20de757f735a1d7260eb07b4c07f9183392fd3d2ef28f4e85d574651bc18aaf0ff77089a041f23936b12091a336305aa5898d0bc0f6ae8c40dace4afdfa25cd9

Download Submit
memory/2668-8-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/2668-14-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/2668-15-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3840-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4072-1-0x0000000002DE0000-0x0000000002EE0000-memory.dmp

Filesize
1024KB

Download
memory/4072-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4072-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4072-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4072-12-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4072-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads