tofsee | 4dccb7f03afbc348faecb8eaa98ab867c56b4a84717cd510b83d0621bd7ce5ed

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-01-2025 18:59

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General

Target

2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe
Size

13.6MB
MD5

f2f54f1fbf2d00a57957de118abe5b58
SHA1

7a6c75b8e426032f0dff6cb6137797e006eeef9f
SHA256

4dccb7f03afbc348faecb8eaa98ab867c56b4a84717cd510b83d0621bd7ce5ed
SHA512

955e1150aaff7c30658b7e3009071726ed51f07d4f744ff48890890bbef412c9c1057edec09290c39c8b3a1f34b9906a6d2eb6d7d37ac8fd89542df2df8cfc90
SSDEEP

24576:XEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZt:0fot

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\zkjuexss = "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
3020	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\zkjuexss\ImagePath = "C:\\Windows\\SysWOW64\\zkjuexss\\ljstcynj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3044	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2604	ljstcynj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2604 set thread context of 3044	2604	ljstcynj.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2840	sc.exe
2836	sc.exe
2572	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	sc.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_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	ljstcynj.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 2848	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	30
PID 2936 wrote to memory of 2848	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	30
PID 2936 wrote to memory of 2848	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	30
PID 2936 wrote to memory of 2848	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	30
PID 2936 wrote to memory of 2444	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	32
PID 2936 wrote to memory of 2444	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	32
PID 2936 wrote to memory of 2444	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	32
PID 2936 wrote to memory of 2444	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	32
PID 2936 wrote to memory of 2840	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	34
PID 2936 wrote to memory of 2840	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	34
PID 2936 wrote to memory of 2840	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	34
PID 2936 wrote to memory of 2840	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	34
PID 2936 wrote to memory of 2836	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	36
PID 2936 wrote to memory of 2836	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	36
PID 2936 wrote to memory of 2836	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	36
PID 2936 wrote to memory of 2836	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	36
PID 2936 wrote to memory of 2572	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	38
PID 2936 wrote to memory of 2572	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	38
PID 2936 wrote to memory of 2572	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	38
PID 2936 wrote to memory of 2572	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	38
PID 2604 wrote to memory of 3044	2604	ljstcynj.exe	41
PID 2604 wrote to memory of 3044	2604	ljstcynj.exe	41
PID 2604 wrote to memory of 3044	2604	ljstcynj.exe	41
PID 2604 wrote to memory of 3044	2604	ljstcynj.exe	41
PID 2604 wrote to memory of 3044	2604	ljstcynj.exe	41
PID 2604 wrote to memory of 3044	2604	ljstcynj.exe	41
PID 2936 wrote to memory of 3020	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	42
PID 2936 wrote to memory of 3020	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	42
PID 2936 wrote to memory of 3020	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	42
PID 2936 wrote to memory of 3020	2936	2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zkjuexss\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ljstcynj.exe" C:\Windows\SysWOW64\zkjuexss\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zkjuexss binPath= "C:\Windows\SysWOW64\zkjuexss\ljstcynj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zkjuexss "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zkjuexss
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- 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:3020

C:\Windows\SysWOW64\zkjuexss\ljstcynj.exe
C:\Windows\SysWOW64\zkjuexss\ljstcynj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_f2f54f1fbf2d00a57957de118abe5b58_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604
- 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:3044

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\ljstcynj.exe

Filesize
14.4MB

MD5
a2984597331a8be73f5238c6e4072277

SHA1
8b2c2040bbf391c2eace6251dc7f41c3fcc147de

SHA256
100ee4981f26fb5d937441fbc068f06a17ebb68fe2deab706772d847079ff834

SHA512
4e838fafd0ff617ddb7c9b7d8135133576b04b31734da4a24864cefc65b35ceac546fc766615eed87fe5f05630feb9b816272506d16bac71eccccf8da726e16b

Download Submit
memory/2604-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2936-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2936-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2936-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/2936-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2936-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2936-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3044-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3044-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3044-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3044-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3044-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads