tofsee | 66499cda0ecf663375bd67e42255e678d77405e401601072b862bd0b4caa4c10

Analysis

max time kernel
145s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/01/2025, 13:23

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General

Target

2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe
Size

10.1MB
MD5

65503d0561900400f2cdc6d430504c7d
SHA1

8b92936c104917403d0981a5e3b296325376f9c6
SHA256

66499cda0ecf663375bd67e42255e678d77405e401601072b862bd0b4caa4c10
SHA512

80844bdcb918296aa4b0d1b30e37c3ad905d6111a635ec909fb0917cf71c693e922e6cc9c4796c7dfb645b0722170763abec49fb1c938acbddf553c9b21acb3d
SSDEEP

49152:SLFuiE888888888888888888888888888888888888888888888888888888888u:SLMZ

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\vxoiljqp = "0"	svchost.exe

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
2792	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\vxoiljqp\ImagePath = "C:\\Windows\\SysWOW64\\vxoiljqp\\zmyvobgq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2452	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2716	zmyvobgq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 2452	2716	zmyvobgq.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2700	sc.exe
2756	sc.exe
2892	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	2025-01-28_65503d0561900400f2cdc6d430504c7d_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	zmyvobgq.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	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 1680	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	30
PID 1936 wrote to memory of 1680	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	30
PID 1936 wrote to memory of 1680	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	30
PID 1936 wrote to memory of 1680	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	30
PID 1936 wrote to memory of 2524	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	32
PID 1936 wrote to memory of 2524	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	32
PID 1936 wrote to memory of 2524	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	32
PID 1936 wrote to memory of 2524	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	32
PID 1936 wrote to memory of 2700	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	34
PID 1936 wrote to memory of 2700	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	34
PID 1936 wrote to memory of 2700	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	34
PID 1936 wrote to memory of 2700	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	34
PID 1936 wrote to memory of 2756	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	36
PID 1936 wrote to memory of 2756	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	36
PID 1936 wrote to memory of 2756	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	36
PID 1936 wrote to memory of 2756	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	36
PID 1936 wrote to memory of 2892	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	38
PID 1936 wrote to memory of 2892	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	38
PID 1936 wrote to memory of 2892	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	38
PID 1936 wrote to memory of 2892	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	38
PID 2716 wrote to memory of 2452	2716	zmyvobgq.exe	41
PID 2716 wrote to memory of 2452	2716	zmyvobgq.exe	41
PID 2716 wrote to memory of 2452	2716	zmyvobgq.exe	41
PID 2716 wrote to memory of 2452	2716	zmyvobgq.exe	41
PID 2716 wrote to memory of 2452	2716	zmyvobgq.exe	41
PID 2716 wrote to memory of 2452	2716	zmyvobgq.exe	41
PID 1936 wrote to memory of 2792	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	42
PID 1936 wrote to memory of 2792	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	42
PID 1936 wrote to memory of 2792	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	42
PID 1936 wrote to memory of 2792	1936	2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vxoiljqp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zmyvobgq.exe" C:\Windows\SysWOW64\vxoiljqp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2524
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vxoiljqp binPath= "C:\Windows\SysWOW64\vxoiljqp\zmyvobgq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vxoiljqp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vxoiljqp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2892
- 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:2792

C:\Windows\SysWOW64\vxoiljqp\zmyvobgq.exe
C:\Windows\SysWOW64\vxoiljqp\zmyvobgq.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_65503d0561900400f2cdc6d430504c7d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2452

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
14.1MB

MD5
28832bef69ea32ddae08b9719dd4ec5e

SHA1
21aaa6352a2e6f5b74ac2712e638e3cd950ae242

SHA256
a29b63016c1745575656452859aee62ad9b0c2c6a5f5ffc5f557ef4eb092d629

SHA512
f4b1e54c65d4f88a2f7d73d97dd525352a1f2f77a86f04b77f24067ed62677664aedfd82b0f98d73b6fc3443db441e35ab9bc8b686bd221af4a9a9a405ee3741

Download Submit
memory/1936-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1936-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1936-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1936-14-0x0000000000400000-0x0000000002DBF000-memory.dmp

Filesize
41.7MB

Download
memory/1936-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1936-1-0x0000000002E90000-0x0000000002F90000-memory.dmp

Filesize
1024KB

Download
memory/2452-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2452-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2716-12-0x0000000000400000-0x0000000002DBF000-memory.dmp

Filesize
41.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads