tofsee | 88fd6bb1a8a2a19fdbe74c41783fd030d103019239adc2033e9dfdf1aee13942

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

C2

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
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
3220	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\pnoqukon\ImagePath = "C:\\Windows\\SysWOW64\\pnoqukon\\bjycpnww.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe

Deletes itself 1 IoCs

pid	Process
808	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5012	bjycpnww.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5012 set thread context of 808	5012	bjycpnww.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
3332	sc.exe
2120	sc.exe
1516	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3300	2004	WerFault.exe	83
5040	5012	WerFault.exe	97

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	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	bjycpnww.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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 4392	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	87
PID 2004 wrote to memory of 4392	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	87
PID 2004 wrote to memory of 4392	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	87
PID 2004 wrote to memory of 4128	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	89
PID 2004 wrote to memory of 4128	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	89
PID 2004 wrote to memory of 4128	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	89
PID 2004 wrote to memory of 3332	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	91
PID 2004 wrote to memory of 3332	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	91
PID 2004 wrote to memory of 3332	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	91
PID 2004 wrote to memory of 2120	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	93
PID 2004 wrote to memory of 2120	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	93
PID 2004 wrote to memory of 2120	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	93
PID 2004 wrote to memory of 1516	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	95
PID 2004 wrote to memory of 1516	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	95
PID 2004 wrote to memory of 1516	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	95
PID 2004 wrote to memory of 3220	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	98
PID 2004 wrote to memory of 3220	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	98
PID 2004 wrote to memory of 3220	2004	2025-02-07_36dc863a2d6408b0d1515ea04a39e54f_mafia.exe	98
PID 5012 wrote to memory of 808	5012	bjycpnww.exe	104
PID 5012 wrote to memory of 808	5012	bjycpnww.exe	104
PID 5012 wrote to memory of 808	5012	bjycpnww.exe	104
PID 5012 wrote to memory of 808	5012	bjycpnww.exe	104
PID 5012 wrote to memory of 808	5012	bjycpnww.exe	104

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⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pnoqukon\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bjycpnww.exe" C:\Windows\SysWOW64\pnoqukon\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4128
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pnoqukon binPath= "C:\Windows\SysWOW64\pnoqukon\bjycpnww.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:3332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pnoqukon "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2120
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pnoqukon
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1516
- 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:3220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2004 -s 784
  2⤵
  - Program crash
  PID:3300

C:\Windows\SysWOW64\pnoqukon\bjycpnww.exe
C:\Windows\SysWOW64\pnoqukon\bjycpnww.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:5012
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5012 -s 508
  2⤵
  - Program crash
  PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2004 -ip 2004
1⤵
PID:4408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 5012 -ip 5012
1⤵
PID:1668

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\bjycpnww.exe

Filesize
10.5MB

MD5
bc5ace9633c6c1cc2800fc5f586a9a6f

SHA1
5016d3e5713a2dff2ebedd8e64be2fe959e638d3

SHA256
bea4847d252535e2596e2969862926ea62d588d03f56884e9a00add36392716a

SHA512
6c9fff6a73d5ae5f765a03129ca580f2e1af81cf3def188a03890e6532c661cfbd68ef284bdcac1ce6f61256909ee7a6e8c86d0730d1c4b87d80f2598613a2c1

Download Submit
memory/808-14-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/808-17-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/808-16-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/2004-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2004-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2004-1-0x0000000000780000-0x0000000000880000-memory.dmp

Filesize
1024KB

Download
memory/2004-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2004-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2004-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/5012-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5012-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5012-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5012-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads