tofsee | 7ddae85a7f3628c9ac2fb4b57b97789395902111a902d5db117897420037dcbb

General

Target

2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe
Size

10.7MB
MD5

21aa80f7c0de8d455dd905294073ea40
SHA1

a1e2df714121b93f0d36d492564276ec78e2b5fe
SHA256

7ddae85a7f3628c9ac2fb4b57b97789395902111a902d5db117897420037dcbb
SHA512

f0731e6f00cb55ce4ae9d5f6aa0605cf0d99e63fed1ee021bda4f22176d0645189eaba3406e4a2a92449ce7d50ecb0b769683f6fee557e4e5f2679de76ea7aa8
SSDEEP

196608:jyXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXs:OXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX8

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
3228	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\vtcdnbmt\ImagePath = "C:\\Windows\\SysWOW64\\vtcdnbmt\\bkejbavr.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe

Deletes itself 1 IoCs

pid	Process
560	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3528	bkejbavr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3528 set thread context of 560	3528	bkejbavr.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
1636	sc.exe
2668	sc.exe
1136	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	svchost.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	bkejbavr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.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 4936 wrote to memory of 228	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	82
PID 4936 wrote to memory of 228	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	82
PID 4936 wrote to memory of 228	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	82
PID 4936 wrote to memory of 2792	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	84
PID 4936 wrote to memory of 2792	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	84
PID 4936 wrote to memory of 2792	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	84
PID 4936 wrote to memory of 2668	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	86
PID 4936 wrote to memory of 2668	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	86
PID 4936 wrote to memory of 2668	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	86
PID 4936 wrote to memory of 1136	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	88
PID 4936 wrote to memory of 1136	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	88
PID 4936 wrote to memory of 1136	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	88
PID 4936 wrote to memory of 1636	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	90
PID 4936 wrote to memory of 1636	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	90
PID 4936 wrote to memory of 1636	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	90
PID 3528 wrote to memory of 560	3528	bkejbavr.exe	93
PID 3528 wrote to memory of 560	3528	bkejbavr.exe	93
PID 3528 wrote to memory of 560	3528	bkejbavr.exe	93
PID 3528 wrote to memory of 560	3528	bkejbavr.exe	93
PID 3528 wrote to memory of 560	3528	bkejbavr.exe	93
PID 4936 wrote to memory of 3228	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	94
PID 4936 wrote to memory of 3228	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	94
PID 4936 wrote to memory of 3228	4936	2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe	94

C:\Users\Admin\AppData\Local\Temp\2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vtcdnbmt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bkejbavr.exe" C:\Windows\SysWOW64\vtcdnbmt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vtcdnbmt binPath= "C:\Windows\SysWOW64\vtcdnbmt\bkejbavr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vtcdnbmt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vtcdnbmt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1636
- 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:3228

C:\Windows\SysWOW64\vtcdnbmt\bkejbavr.exe
C:\Windows\SysWOW64\vtcdnbmt\bkejbavr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_21aa80f7c0de8d455dd905294073ea40_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3528
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:560

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\bkejbavr.exe

Filesize
10.3MB

MD5
8f4fb3fb5bc715f037e94c3d1eec6bc2

SHA1
d90d7f939d291a3d8e0033fb0a83d7508865d26f

SHA256
e8a97c376cf95f940a8fc575729b3a47b9119da569073daac4d4c11a8734974c

SHA512
80823fccf4ca8bdaad74458c9f0b06c4e1c7425002a2042cb3460198f7fd5e2ef569bd05eab77d805df701adb56f165f857aec13ae9b3519f095292018850b59

Download Submit
memory/560-11-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/560-22-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/560-21-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/560-20-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/560-15-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/3528-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3528-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3528-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3528-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4936-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4936-18-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/4936-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4936-1-0x0000000000700000-0x0000000000800000-memory.dmp

Filesize
1024KB

Download
memory/4936-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4936-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads