tofsee | 336f78a2424aea7feba8ab5cf2ace4dd0f94a6f2c89babf6b80b12ed8d3e1be1

Analysis

max time kernel
144s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-01-2025 18:46

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General

Target

2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe
Size

12.8MB
MD5

85b00410f90774960ae46efec9f11613
SHA1

7712e2db36a26029331d6e509113d042b90cf457
SHA256

336f78a2424aea7feba8ab5cf2ace4dd0f94a6f2c89babf6b80b12ed8d3e1be1
SHA512

b6de80de2e8d45b2ec0bb4b9370325620009841dcc06087162195bead77cb1886f7f5f23435a05d6d1ccd27e551c71d00180830a69f2c1dfdb850cf4afc5210e
SSDEEP

24576:PEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ:Mfot

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\touixzu = "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
2544	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\touixzu\ImagePath = "C:\\Windows\\SysWOW64\\touixzu\\zymoczas.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1228	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2600	zymoczas.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2600 set thread context of 1228	2600	zymoczas.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2244	sc.exe
2768	sc.exe
2736	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	zymoczas.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2816	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	30
PID 2092 wrote to memory of 2816	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	30
PID 2092 wrote to memory of 2816	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	30
PID 2092 wrote to memory of 2816	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	30
PID 2092 wrote to memory of 2704	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	32
PID 2092 wrote to memory of 2704	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	32
PID 2092 wrote to memory of 2704	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	32
PID 2092 wrote to memory of 2704	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	32
PID 2092 wrote to memory of 2768	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	34
PID 2092 wrote to memory of 2768	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	34
PID 2092 wrote to memory of 2768	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	34
PID 2092 wrote to memory of 2768	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	34
PID 2092 wrote to memory of 2736	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	36
PID 2092 wrote to memory of 2736	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	36
PID 2092 wrote to memory of 2736	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	36
PID 2092 wrote to memory of 2736	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	36
PID 2092 wrote to memory of 2244	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	38
PID 2092 wrote to memory of 2244	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	38
PID 2092 wrote to memory of 2244	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	38
PID 2092 wrote to memory of 2244	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	38
PID 2092 wrote to memory of 2544	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	41
PID 2092 wrote to memory of 2544	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	41
PID 2092 wrote to memory of 2544	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	41
PID 2092 wrote to memory of 2544	2092	2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe	41
PID 2600 wrote to memory of 1228	2600	zymoczas.exe	43
PID 2600 wrote to memory of 1228	2600	zymoczas.exe	43
PID 2600 wrote to memory of 1228	2600	zymoczas.exe	43
PID 2600 wrote to memory of 1228	2600	zymoczas.exe	43
PID 2600 wrote to memory of 1228	2600	zymoczas.exe	43
PID 2600 wrote to memory of 1228	2600	zymoczas.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\touixzu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zymoczas.exe" C:\Windows\SysWOW64\touixzu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create touixzu binPath= "C:\Windows\SysWOW64\touixzu\zymoczas.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description touixzu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start touixzu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2244
- 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:2544

C:\Windows\SysWOW64\touixzu\zymoczas.exe
C:\Windows\SysWOW64\touixzu\zymoczas.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_85b00410f90774960ae46efec9f11613_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2600
- 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:1228

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\zymoczas.exe

Filesize
12.3MB

MD5
a9528b677fbdd6779a41bc238ec3ba97

SHA1
b7ac5778b9e674b52000faabf53e14013615eceb

SHA256
fcd1b7934b69723ebb53f65c4dc8aa5df89777d2e3a197b5faa984f70fd97d03

SHA512
a7365d6c4341526b7050a88e24076da480f9812f53050b7ffafbf38c1f99c92b8225c0f6f91a937a4ac04dc403eac3a1d6d611fbf6a51a2f661df51392eae1eb

Download Submit
memory/1228-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1228-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1228-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1228-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1228-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2092-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2092-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2092-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2092-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2092-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2092-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2600-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads