tofsee | 6650fa6e68ec71fbcd05204f13788abb76b1ffd8e168895df0f52dedf8ccacfd

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
31-01-2025 04:22

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General

Target

2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe
Size

13.7MB
MD5

0472e8ee3b50ba271bfee33f7f519f5c
SHA1

acaff98b09112f8bec1eb8a467be8e4470cd57a1
SHA256

6650fa6e68ec71fbcd05204f13788abb76b1ffd8e168895df0f52dedf8ccacfd
SHA512

48bbae0d5f655c20e9a64e857d57b38adc30d9dceac10cd66b041f9fcc7c6d8bca2adb63c1aff5eb4dbedb33e1091c25b6b01e044eaed5ca74fe561e26c10223
SSDEEP

6144:jLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQ7:YTYe+D2jFu+iZoUFhAzo

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\xudywwrn = "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
2008	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\xudywwrn\ImagePath = "C:\\Windows\\SysWOW64\\xudywwrn\\sunyfnbr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2720	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2540	sunyfnbr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2540 set thread context of 2720	2540	sunyfnbr.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2668	sc.exe
3016	sc.exe
2664	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	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sunyfnbr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 2800	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	30
PID 3060 wrote to memory of 2800	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	30
PID 3060 wrote to memory of 2800	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	30
PID 3060 wrote to memory of 2800	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	30
PID 3060 wrote to memory of 2708	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	32
PID 3060 wrote to memory of 2708	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	32
PID 3060 wrote to memory of 2708	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	32
PID 3060 wrote to memory of 2708	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	32
PID 3060 wrote to memory of 2668	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	34
PID 3060 wrote to memory of 2668	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	34
PID 3060 wrote to memory of 2668	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	34
PID 3060 wrote to memory of 2668	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	34
PID 3060 wrote to memory of 3016	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	36
PID 3060 wrote to memory of 3016	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	36
PID 3060 wrote to memory of 3016	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	36
PID 3060 wrote to memory of 3016	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	36
PID 3060 wrote to memory of 2664	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	38
PID 3060 wrote to memory of 2664	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	38
PID 3060 wrote to memory of 2664	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	38
PID 3060 wrote to memory of 2664	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	38
PID 2540 wrote to memory of 2720	2540	sunyfnbr.exe	41
PID 2540 wrote to memory of 2720	2540	sunyfnbr.exe	41
PID 2540 wrote to memory of 2720	2540	sunyfnbr.exe	41
PID 2540 wrote to memory of 2720	2540	sunyfnbr.exe	41
PID 2540 wrote to memory of 2720	2540	sunyfnbr.exe	41
PID 2540 wrote to memory of 2720	2540	sunyfnbr.exe	41
PID 3060 wrote to memory of 2008	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	42
PID 3060 wrote to memory of 2008	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	42
PID 3060 wrote to memory of 2008	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	42
PID 3060 wrote to memory of 2008	3060	2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xudywwrn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sunyfnbr.exe" C:\Windows\SysWOW64\xudywwrn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xudywwrn binPath= "C:\Windows\SysWOW64\xudywwrn\sunyfnbr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xudywwrn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xudywwrn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2664
- 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:2008

C:\Windows\SysWOW64\xudywwrn\sunyfnbr.exe
C:\Windows\SysWOW64\xudywwrn\sunyfnbr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0472e8ee3b50ba271bfee33f7f519f5c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2540
- 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:2720

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\sunyfnbr.exe

Filesize
10.7MB

MD5
69a35dc7d4fa8f3bf696e0001794f4a7

SHA1
7aba0d24b77e103252161f6c32439ef4d5b7acd4

SHA256
2dcc854d6cee30046ab8994362b1874afc335ece3f300f0cdc2188eb0c1aa446

SHA512
48406b85ddfe184d5bbfcab09f33d5f4c26b41ce873f269b2bbe864acbcfea590b8f2007b12a60996a6e3409491e2c7b8a75317c7ba7ca0d9be1df152db63869

Download Submit
memory/2540-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2720-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2720-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2720-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2720-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2720-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3060-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3060-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/3060-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3060-14-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3060-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3060-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads