tofsee | 7810708f33c355028fb29b32b57474d12daf826b803b471756cb6800f32b7436

Analysis

max time kernel
141s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-11-2024 19:53

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General

Target

2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe
Size

10.4MB
MD5

3514d0875438dd5682cfe14dd6cd95ec
SHA1

b69b0f81ffb4d8684e770e80746249042cf7756f
SHA256

7810708f33c355028fb29b32b57474d12daf826b803b471756cb6800f32b7436
SHA512

0387238e6e8c713beb521bd5d58d724d0abfa59e6da4f63483759c0f1799fb362e5b002429d0fd7b201841b6c725c004c339e4086268031997d3c2388e92a762
SSDEEP

49152:1Vdrl/8HAzGCbGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGn:1Vdrl/9zG

Score

10^/10

tofsee discovery evasion 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

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\zzixidvn = "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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3040	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\zzixidvn\ImagePath = "C:\\Windows\\SysWOW64\\zzixidvn\\fbvbhjbs.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1976	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2764	fbvbhjbs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2764 set thread context of 1976	2764	fbvbhjbs.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2824	sc.exe
2704	sc.exe
2716	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbvbhjbs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 2096	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	31
PID 1764 wrote to memory of 2096	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	31
PID 1764 wrote to memory of 2096	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	31
PID 1764 wrote to memory of 2096	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	31
PID 1764 wrote to memory of 1488	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	33
PID 1764 wrote to memory of 1488	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	33
PID 1764 wrote to memory of 1488	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	33
PID 1764 wrote to memory of 1488	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	33
PID 1764 wrote to memory of 2704	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	35
PID 1764 wrote to memory of 2704	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	35
PID 1764 wrote to memory of 2704	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	35
PID 1764 wrote to memory of 2704	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	35
PID 1764 wrote to memory of 2716	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	37
PID 1764 wrote to memory of 2716	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	37
PID 1764 wrote to memory of 2716	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	37
PID 1764 wrote to memory of 2716	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	37
PID 1764 wrote to memory of 2824	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	39
PID 1764 wrote to memory of 2824	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	39
PID 1764 wrote to memory of 2824	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	39
PID 1764 wrote to memory of 2824	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	39
PID 1764 wrote to memory of 3040	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	42
PID 1764 wrote to memory of 3040	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	42
PID 1764 wrote to memory of 3040	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	42
PID 1764 wrote to memory of 3040	1764	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	42
PID 2764 wrote to memory of 1976	2764	fbvbhjbs.exe	44
PID 2764 wrote to memory of 1976	2764	fbvbhjbs.exe	44
PID 2764 wrote to memory of 1976	2764	fbvbhjbs.exe	44
PID 2764 wrote to memory of 1976	2764	fbvbhjbs.exe	44
PID 2764 wrote to memory of 1976	2764	fbvbhjbs.exe	44
PID 2764 wrote to memory of 1976	2764	fbvbhjbs.exe	44

C:\Users\Admin\AppData\Local\Temp\2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zzixidvn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2096
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fbvbhjbs.exe" C:\Windows\SysWOW64\zzixidvn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zzixidvn binPath= "C:\Windows\SysWOW64\zzixidvn\fbvbhjbs.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zzixidvn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zzixidvn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2824
- 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:3040

C:\Windows\SysWOW64\zzixidvn\fbvbhjbs.exe
C:\Windows\SysWOW64\zzixidvn\fbvbhjbs.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- 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:1976

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\fbvbhjbs.exe

Filesize
11.4MB

MD5
5465c03d5a3b32f304dafe26bf03f2f3

SHA1
c95ece9be5ebbe617a509305c42e613cc6231df9

SHA256
d542ec6f69a26fbab248cd37fecdce8f0d87e576d2232057c9141c0c9cdda2d2

SHA512
4511658b2ea568758867195aea3609c938e8693981550b46c96d4e5f816afe49f2cf0ae391a9af93d41bbdcdf0cd90a88715ed518a9ab0b53c87fd6963851c11

Download Submit
memory/1764-8-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/1764-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1764-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/1764-7-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/1764-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1764-1-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/1976-14-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/1976-17-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/1976-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1976-11-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/1976-18-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/2764-15-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads