tofsee | 0bc64c4228a8a04bc7e86cbe66739cd23a4125fc9b732fcf4c9d71c645343006

General

Target

2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe
Size

13.5MB
MD5

6df18a8d2707d7eb2d912e8fb6391b11
SHA1

82c745888941614f23554b0b36d0d4e9054188b5
SHA256

0bc64c4228a8a04bc7e86cbe66739cd23a4125fc9b732fcf4c9d71c645343006
SHA512

91a61750cf0c279c02963f22bf637738c3d6d0113a0d73b14f346e059315edc16c046ee28f1eb016d88aca8da3a73c64413f30cb3fd472dd3f12976a99e1b560
SSDEEP

24576:mEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ9:ffot

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
208	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\glceyfat\ImagePath = "C:\\Windows\\SysWOW64\\glceyfat\\tcwbtsnj.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	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe

Deletes itself 1 IoCs

pid	Process
1656	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1148	tcwbtsnj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1148 set thread context of 1656	1148	tcwbtsnj.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3668	sc.exe
4276	sc.exe
2276	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
4912	3564	WerFault.exe	82
2544	1148	WerFault.exe	96

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	svchost.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	tcwbtsnj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3564 wrote to memory of 764	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	86
PID 3564 wrote to memory of 764	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	86
PID 3564 wrote to memory of 764	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	86
PID 3564 wrote to memory of 3428	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	88
PID 3564 wrote to memory of 3428	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	88
PID 3564 wrote to memory of 3428	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	88
PID 3564 wrote to memory of 3668	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	90
PID 3564 wrote to memory of 3668	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	90
PID 3564 wrote to memory of 3668	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	90
PID 3564 wrote to memory of 4276	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	92
PID 3564 wrote to memory of 4276	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	92
PID 3564 wrote to memory of 4276	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	92
PID 3564 wrote to memory of 2276	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	94
PID 3564 wrote to memory of 2276	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	94
PID 3564 wrote to memory of 2276	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	94
PID 3564 wrote to memory of 208	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	97
PID 3564 wrote to memory of 208	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	97
PID 3564 wrote to memory of 208	3564	2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe	97
PID 1148 wrote to memory of 1656	1148	tcwbtsnj.exe	102
PID 1148 wrote to memory of 1656	1148	tcwbtsnj.exe	102
PID 1148 wrote to memory of 1656	1148	tcwbtsnj.exe	102
PID 1148 wrote to memory of 1656	1148	tcwbtsnj.exe	102
PID 1148 wrote to memory of 1656	1148	tcwbtsnj.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\glceyfat\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tcwbtsnj.exe" C:\Windows\SysWOW64\glceyfat\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create glceyfat binPath= "C:\Windows\SysWOW64\glceyfat\tcwbtsnj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description glceyfat "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4276
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start glceyfat
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2276
- 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:208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3564 -s 1176
  2⤵
  - Program crash
  PID:4912

C:\Windows\SysWOW64\glceyfat\tcwbtsnj.exe
C:\Windows\SysWOW64\glceyfat\tcwbtsnj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_6df18a8d2707d7eb2d912e8fb6391b11_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1148
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1148 -s 508
  2⤵
  - Program crash
  PID:2544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3564 -ip 3564
1⤵
PID:5020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1148 -ip 1148
1⤵
PID:740

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\tcwbtsnj.exe

Filesize
14.8MB

MD5
828a0fea1b5b8a9f7096a2b9053ba896

SHA1
0240decc309ee30815e25c180e78bb32a1ff8f71

SHA256
727232148ca38f03e2045a3df64cafcd66284cc785d82c31ffeb0db988b892f9

SHA512
8db129610bc6348b571fd37bda98763dfd7e0ae7021e3272a774e24d6ee2a65395a588423efabc6c7b4056891ce3d8c6723296127b85bcdf302f86b94c3160be

Download Submit
memory/1148-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1148-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1148-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1148-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1656-14-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/1656-16-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/1656-17-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/3564-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3564-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3564-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3564-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3564-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3564-1-0x0000000000460000-0x0000000000560000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads