tofsee | a34fc505581c9d2d8792539af0035776ff2010b061560cc5551844cd927d2733

General

Target

2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe
Size

15.0MB
MD5

0e4cf35ce4e14fa62e86c323da9aa4ca
SHA1

2f61f468f6adf7d5849b7635d125a6fd2c4fbb0a
SHA256

a34fc505581c9d2d8792539af0035776ff2010b061560cc5551844cd927d2733
SHA512

a48d0311381a78ced1dd0c5d1548d83b51d3caa42564124a8bab2c07e3c75ce0c90c50207df4d4a4454138ac4197cb2f3fc5f8f4c36ec47763630edfc7b7e780
SSDEEP

24576:NEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZh:2fot

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
4736	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\xystefnw\ImagePath = "C:\\Windows\\SysWOW64\\xystefnw\\tbquhfoo.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-1-5-21-805940606-1861219160-370298170-1000\Control Panel\International\Geo\Nation	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe

Deletes itself 1 IoCs

pid	Process
2280	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4884	tbquhfoo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4884 set thread context of 2280	4884	tbquhfoo.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1640	sc.exe
3656	sc.exe
2104	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
760	1944	WerFault.exe	82
1488	4884	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tbquhfoo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 1344	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	86
PID 1944 wrote to memory of 1344	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	86
PID 1944 wrote to memory of 1344	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	86
PID 1944 wrote to memory of 404	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	88
PID 1944 wrote to memory of 404	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	88
PID 1944 wrote to memory of 404	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	88
PID 1944 wrote to memory of 3656	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	90
PID 1944 wrote to memory of 3656	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	90
PID 1944 wrote to memory of 3656	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	90
PID 1944 wrote to memory of 2104	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	92
PID 1944 wrote to memory of 2104	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	92
PID 1944 wrote to memory of 2104	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	92
PID 1944 wrote to memory of 1640	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	94
PID 1944 wrote to memory of 1640	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	94
PID 1944 wrote to memory of 1640	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	94
PID 1944 wrote to memory of 4736	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	97
PID 1944 wrote to memory of 4736	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	97
PID 1944 wrote to memory of 4736	1944	2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe	97
PID 4884 wrote to memory of 2280	4884	tbquhfoo.exe	102
PID 4884 wrote to memory of 2280	4884	tbquhfoo.exe	102
PID 4884 wrote to memory of 2280	4884	tbquhfoo.exe	102
PID 4884 wrote to memory of 2280	4884	tbquhfoo.exe	102
PID 4884 wrote to memory of 2280	4884	tbquhfoo.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xystefnw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tbquhfoo.exe" C:\Windows\SysWOW64\xystefnw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xystefnw binPath= "C:\Windows\SysWOW64\xystefnw\tbquhfoo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xystefnw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xystefnw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1640
- 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:4736
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1944 -s 1304
  2⤵
  - Program crash
  PID:760

C:\Windows\SysWOW64\xystefnw\tbquhfoo.exe
C:\Windows\SysWOW64\xystefnw\tbquhfoo.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_0e4cf35ce4e14fa62e86c323da9aa4ca_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2280
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4884 -s 516
  2⤵
  - Program crash
  PID:1488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1944 -ip 1944
1⤵
PID:1052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4884 -ip 4884
1⤵
PID:1988

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\tbquhfoo.exe

Filesize
14.2MB

MD5
e83dacde4087c1e3cc20420b916fb7a5

SHA1
a3e119abfd69da39b608ac206cd773640cdf5481

SHA256
903eb85acd8c2d8c86313f158831da95ccc56c473a06c4ec5e5bdb76a9f29cd8

SHA512
bbe5b2f1227efaaf53006e9ea399bf5e4313a87c99fa5a37eb092e94e8b7ff71fb047047e25b8348d1b6ffd1a3e06a53dd8c70eb15750f118cfce10d3003a28b

Download Submit
memory/1944-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1944-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1944-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/1944-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1944-8-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/1944-1-0x00000000006E0000-0x00000000007E0000-memory.dmp

Filesize
1024KB

Download
memory/2280-14-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download
memory/2280-16-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download
memory/2280-18-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download
memory/4884-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4884-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4884-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4884-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads