tofsee | 34a9e529ec99ec8b25ca513c855771b748066504d21249f27c10630f6c42ba8b

General

Target

2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe
Size

14.8MB
MD5

e07e7a0103d4cc93b6abd0a2a53e0d06
SHA1

aed3f747f74bc42fab2cd3aa4031b09607708940
SHA256

34a9e529ec99ec8b25ca513c855771b748066504d21249f27c10630f6c42ba8b
SHA512

fb654f50576e844688139a6f634178df56bcc0be0ffb218ab48259dbb05129464aa1eb70d4cb86d81dabc508e0778f9c5d9ffe0c531d4100b3188fdc4e0e1bf4
SSDEEP

393216:TXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:

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
2756	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\fnxdnwju\ImagePath = "C:\\Windows\\SysWOW64\\fnxdnwju\\jvuitdlf.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-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe

Deletes itself 1 IoCs

pid	Process
2132	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3868	jvuitdlf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3868 set thread context of 2132	3868	jvuitdlf.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4220	sc.exe
3084	sc.exe
3460	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	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_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
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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jvuitdlf.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 648 wrote to memory of 4256	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	86
PID 648 wrote to memory of 4256	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	86
PID 648 wrote to memory of 4256	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	86
PID 648 wrote to memory of 1796	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	88
PID 648 wrote to memory of 1796	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	88
PID 648 wrote to memory of 1796	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	88
PID 648 wrote to memory of 4220	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	91
PID 648 wrote to memory of 4220	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	91
PID 648 wrote to memory of 4220	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	91
PID 648 wrote to memory of 3084	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	93
PID 648 wrote to memory of 3084	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	93
PID 648 wrote to memory of 3084	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	93
PID 648 wrote to memory of 3460	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	96
PID 648 wrote to memory of 3460	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	96
PID 648 wrote to memory of 3460	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	96
PID 648 wrote to memory of 2756	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	99
PID 648 wrote to memory of 2756	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	99
PID 648 wrote to memory of 2756	648	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	99
PID 3868 wrote to memory of 2132	3868	jvuitdlf.exe	101
PID 3868 wrote to memory of 2132	3868	jvuitdlf.exe	101
PID 3868 wrote to memory of 2132	3868	jvuitdlf.exe	101
PID 3868 wrote to memory of 2132	3868	jvuitdlf.exe	101
PID 3868 wrote to memory of 2132	3868	jvuitdlf.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fnxdnwju\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jvuitdlf.exe" C:\Windows\SysWOW64\fnxdnwju\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fnxdnwju binPath= "C:\Windows\SysWOW64\fnxdnwju\jvuitdlf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fnxdnwju "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fnxdnwju
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3460
- 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:2756

C:\Windows\SysWOW64\fnxdnwju\jvuitdlf.exe
C:\Windows\SysWOW64\fnxdnwju\jvuitdlf.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3868
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2132

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\jvuitdlf.exe

Filesize
13.1MB

MD5
5e15ab1ff2fd29ddfd090e5a675e8569

SHA1
54053e5403871decfe48fab22f77a41bcdcb168e

SHA256
df262ac57db73e286fb2c5e2f9565c948ced4ef7a078b79fb58a566f9bde381d

SHA512
d9aae32da5d99086fdcf48bfbe449f53afe08bf49d5ba1e4ad63feb1635c168e8bbbf1e4f0c54f76deba7d293c22854eef9309d4c2be4ebf0b8a71b15673cf67

Download Submit
memory/648-8-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/648-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/648-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/648-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/648-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/648-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2132-16-0x0000000000160000-0x0000000000175000-memory.dmp

Filesize
84KB

Download
memory/2132-13-0x0000000000160000-0x0000000000175000-memory.dmp

Filesize
84KB

Download
memory/2132-17-0x0000000000160000-0x0000000000175000-memory.dmp

Filesize
84KB

Download
memory/2132-19-0x0000000000160000-0x0000000000175000-memory.dmp

Filesize
84KB

Download
memory/2132-21-0x0000000000160000-0x0000000000175000-memory.dmp

Filesize
84KB

Download
memory/3868-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3868-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3868-20-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads