tofsee | e52c20e0297216d87d9920eb23d3a2096ba04fcaaa923d28dc4263ae0ddbe5bb

General

Target

2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe
Size

12.8MB
MD5

1a136e835c3009b4e91d15512d298be6
SHA1

fe88c1ff07a6445f2e1a34f02716fe43ef3b38ad
SHA256

e52c20e0297216d87d9920eb23d3a2096ba04fcaaa923d28dc4263ae0ddbe5bb
SHA512

e2fc3e2ad8f71c0a9febbfd93511c42b6585825f33648f90767415af978233fd0ea2d0c040186d73053031a13886666128fa67ede7ea048284c3ed4a3f8452b1
SSDEEP

24576:I6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ:VWdLQk

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
4280	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\vpgbuzdk\ImagePath = "C:\\Windows\\SysWOW64\\vpgbuzdk\\ultrbwdr.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-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe

Deletes itself 1 IoCs

pid	Process
4856	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
384	ultrbwdr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 384 set thread context of 4856	384	ultrbwdr.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3272	sc.exe
2292	sc.exe
2868	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
860	2264	WerFault.exe	82
5044	384	WerFault.exe	96

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	2025-02-02_1a136e835c3009b4e91d15512d298be6_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ultrbwdr.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 23 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 1028	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	86
PID 2264 wrote to memory of 1028	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	86
PID 2264 wrote to memory of 1028	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	86
PID 2264 wrote to memory of 4168	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	88
PID 2264 wrote to memory of 4168	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	88
PID 2264 wrote to memory of 4168	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	88
PID 2264 wrote to memory of 3272	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	90
PID 2264 wrote to memory of 3272	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	90
PID 2264 wrote to memory of 3272	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	90
PID 2264 wrote to memory of 2292	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	92
PID 2264 wrote to memory of 2292	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	92
PID 2264 wrote to memory of 2292	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	92
PID 2264 wrote to memory of 2868	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	94
PID 2264 wrote to memory of 2868	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	94
PID 2264 wrote to memory of 2868	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	94
PID 2264 wrote to memory of 4280	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	97
PID 2264 wrote to memory of 4280	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	97
PID 2264 wrote to memory of 4280	2264	2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe	97
PID 384 wrote to memory of 4856	384	ultrbwdr.exe	102
PID 384 wrote to memory of 4856	384	ultrbwdr.exe	102
PID 384 wrote to memory of 4856	384	ultrbwdr.exe	102
PID 384 wrote to memory of 4856	384	ultrbwdr.exe	102
PID 384 wrote to memory of 4856	384	ultrbwdr.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vpgbuzdk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ultrbwdr.exe" C:\Windows\SysWOW64\vpgbuzdk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vpgbuzdk binPath= "C:\Windows\SysWOW64\vpgbuzdk\ultrbwdr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vpgbuzdk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2292
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vpgbuzdk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- 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:4280
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 1044
  2⤵
  - Program crash
  PID:860

C:\Windows\SysWOW64\vpgbuzdk\ultrbwdr.exe
C:\Windows\SysWOW64\vpgbuzdk\ultrbwdr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_1a136e835c3009b4e91d15512d298be6_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:384
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 384 -s 512
  2⤵
  - Program crash
  PID:5044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2264 -ip 2264
1⤵
PID:1164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 384 -ip 384
1⤵
PID:3288

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\ultrbwdr.exe

Filesize
13.4MB

MD5
d77156740e261b3e4ae97cdd4122131a

SHA1
c59ab8ee332924bd7e2d3a6cda6af1e09b52d4a3

SHA256
84bec68416739f9da109e08ca0dc208ca23327b1d2e14977b14852ef38af058e

SHA512
042233ae3c8b833eb667e2590f44368bfcaa12955d6d10549bddae152ff225ec20eb11f997abbea409d108653ef8522ffca8c5b1916a4646af185d1f5f236828

Download Submit
memory/384-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/384-19-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/384-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/384-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2264-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2264-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

Filesize
1024KB

Download
memory/2264-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2264-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2264-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2264-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4856-14-0x0000000000340000-0x0000000000355000-memory.dmp

Filesize
84KB

Download
memory/4856-16-0x0000000000340000-0x0000000000355000-memory.dmp

Filesize
84KB

Download
memory/4856-17-0x0000000000340000-0x0000000000355000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads