tofsee | 88fd6bb1a8a2a19fdbe74c41783fd030d103019239adc2033e9dfdf1aee13942

Analysis

max time kernel
147s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-02-2025 01:43

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General

Target

2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe
Size

12.0MB
MD5

36dc863a2d6408b0d1515ea04a39e54f
SHA1

7c0beacac506cee14758bc04a4f6a258675362ed
SHA256

88fd6bb1a8a2a19fdbe74c41783fd030d103019239adc2033e9dfdf1aee13942
SHA512

8fcd711fc4e976fbdfee4b4634117629ea39d9fcda80b6c18f5d00aee6877df79698a53a253179b234879477451df9e6e78612bba3083e0032b0925d5ab4dabb
SSDEEP

24576:F6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQn:EWdLQk

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\yxkotvkp = "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
2236	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\yxkotvkp\ImagePath = "C:\\Windows\\SysWOW64\\yxkotvkp\\cyqqncbp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2800	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2768	cyqqncbp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2768 set thread context of 2800	2768	cyqqncbp.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2756	sc.exe
2872	sc.exe
2256	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cyqqncbp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 624	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	30
PID 1232 wrote to memory of 624	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	30
PID 1232 wrote to memory of 624	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	30
PID 1232 wrote to memory of 624	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	30
PID 1232 wrote to memory of 2388	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	32
PID 1232 wrote to memory of 2388	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	32
PID 1232 wrote to memory of 2388	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	32
PID 1232 wrote to memory of 2388	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	32
PID 1232 wrote to memory of 2256	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	34
PID 1232 wrote to memory of 2256	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	34
PID 1232 wrote to memory of 2256	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	34
PID 1232 wrote to memory of 2256	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	34
PID 1232 wrote to memory of 2756	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	36
PID 1232 wrote to memory of 2756	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	36
PID 1232 wrote to memory of 2756	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	36
PID 1232 wrote to memory of 2756	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	36
PID 1232 wrote to memory of 2872	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	38
PID 1232 wrote to memory of 2872	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	38
PID 1232 wrote to memory of 2872	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	38
PID 1232 wrote to memory of 2872	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	38
PID 1232 wrote to memory of 2236	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	41
PID 1232 wrote to memory of 2236	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	41
PID 1232 wrote to memory of 2236	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	41
PID 1232 wrote to memory of 2236	1232	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	41
PID 2768 wrote to memory of 2800	2768	cyqqncbp.exe	43
PID 2768 wrote to memory of 2800	2768	cyqqncbp.exe	43
PID 2768 wrote to memory of 2800	2768	cyqqncbp.exe	43
PID 2768 wrote to memory of 2800	2768	cyqqncbp.exe	43
PID 2768 wrote to memory of 2800	2768	cyqqncbp.exe	43
PID 2768 wrote to memory of 2800	2768	cyqqncbp.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yxkotvkp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cyqqncbp.exe" C:\Windows\SysWOW64\yxkotvkp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yxkotvkp binPath= "C:\Windows\SysWOW64\yxkotvkp\cyqqncbp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yxkotvkp "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 yxkotvkp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2872
- 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:2236

C:\Windows\SysWOW64\yxkotvkp\cyqqncbp.exe
C:\Windows\SysWOW64\yxkotvkp\cyqqncbp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2768
- 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:2800

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\cyqqncbp.exe

Filesize
13.1MB

MD5
d745f9f65da98b8dd70358d7c9c89e11

SHA1
65a9451e9cda76d4d7f311bead35c7d45cd30b07

SHA256
8ba3dad7214494d459ea2f8b61c11412f6409cbef38e603e08aba2b5bf573968

SHA512
c83f27a7689d922a2bb741ce74c8d2a161fce0608ce08cd7216b34ca13701c3a7b43069f252e488754c6a6dba32a1334ff02f870438a08275b00e90ddda3ceee

Download Submit
memory/1232-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1232-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1232-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1232-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1232-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1232-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2768-17-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2800-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2800-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2800-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2800-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2800-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads