tofsee | d3acc474578634a4a5fcb49255e9a97bb5d9391b2f4019426fb7e0c9586b3271

General

Target

2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe
Size

11.4MB
MD5

0ea20400e10d827ce339c7b33c6f1e7f
SHA1

6dda40aede4b6e2e0144a835af27bf22be037409
SHA256

d3acc474578634a4a5fcb49255e9a97bb5d9391b2f4019426fb7e0c9586b3271
SHA512

e5e2aaade75838d3bb96a31327a022a4765ed5ba80960a94658a06c6c0404cbcae2e5d95a7305de55a999a494e2f4d1da17c848ec740d8eae571fd7388e5b37c
SSDEEP

6144:TLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQg:oTYe+D2jFu+iZoUFhAz

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
2872	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\knkrgrey\ImagePath = "C:\\Windows\\SysWOW64\\knkrgrey\\ucrvigpp.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	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe

Deletes itself 1 IoCs

pid	Process
384	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3860	ucrvigpp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3860 set thread context of 384	3860	ucrvigpp.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
3792	sc.exe
868	sc.exe
3880	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
1892	4512	WerFault.exe	84
4204	3860	WerFault.exe	100

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ucrvigpp.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4512 wrote to memory of 2772	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	88
PID 4512 wrote to memory of 2772	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	88
PID 4512 wrote to memory of 2772	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	88
PID 4512 wrote to memory of 3084	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	90
PID 4512 wrote to memory of 3084	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	90
PID 4512 wrote to memory of 3084	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	90
PID 4512 wrote to memory of 3880	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	93
PID 4512 wrote to memory of 3880	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	93
PID 4512 wrote to memory of 3880	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	93
PID 4512 wrote to memory of 3792	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	96
PID 4512 wrote to memory of 3792	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	96
PID 4512 wrote to memory of 3792	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	96
PID 4512 wrote to memory of 868	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	98
PID 4512 wrote to memory of 868	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	98
PID 4512 wrote to memory of 868	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	98
PID 4512 wrote to memory of 2872	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	101
PID 4512 wrote to memory of 2872	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	101
PID 4512 wrote to memory of 2872	4512	2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe	101
PID 3860 wrote to memory of 384	3860	ucrvigpp.exe	106
PID 3860 wrote to memory of 384	3860	ucrvigpp.exe	106
PID 3860 wrote to memory of 384	3860	ucrvigpp.exe	106
PID 3860 wrote to memory of 384	3860	ucrvigpp.exe	106
PID 3860 wrote to memory of 384	3860	ucrvigpp.exe	106

C:\Users\Admin\AppData\Local\Temp\2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4512
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\knkrgrey\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ucrvigpp.exe" C:\Windows\SysWOW64\knkrgrey\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create knkrgrey binPath= "C:\Windows\SysWOW64\knkrgrey\ucrvigpp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description knkrgrey "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start knkrgrey
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:868
- 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:2872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1368
  2⤵
  - Program crash
  PID:1892

C:\Windows\SysWOW64\knkrgrey\ucrvigpp.exe
C:\Windows\SysWOW64\knkrgrey\ucrvigpp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_0ea20400e10d827ce339c7b33c6f1e7f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3860
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3860 -s 512
  2⤵
  - Program crash
  PID:4204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4512 -ip 4512
1⤵
PID:3136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3860 -ip 3860
1⤵
PID:4156

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
14.0MB

MD5
72f80640cf29e910dd8c4a7a97460d60

SHA1
efb34fe91fe0500d337b32e4961d16ab49d1efe7

SHA256
960ec1f03639ffcdd53dca59f3c4e0ef504016010a73876e9c1f7ce6a0e42fce

SHA512
00c5653c864966c1223eb959e6eb7e9d60c4876e05b6f51f30806c9f8bb211b8af9f4894ead09a97a676c79c632483f473f89324474019fd7672eece366e2817

Download Submit
memory/384-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/384-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/384-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3860-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3860-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4512-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/4512-2-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/4512-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4512-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4512-10-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/4512-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads