tofsee | 06483d8df208005b714f31bd57857723fd97af19eda196f60895a39f8244fd95

General

Target

2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe
Size

14.8MB
MD5

3b3e47c718feee8079f0b1eb167cd8b2
SHA1

82199d7c5cec2e47bf5bc7932792c93fd527305b
SHA256

06483d8df208005b714f31bd57857723fd97af19eda196f60895a39f8244fd95
SHA512

442b9fecb4ee97d9d06b42d1a2937ae5cdeb98ff7d473bfe8bef3abcb73572aa6611377012aa3b173f0b9939299fe634450ad2e63642c8fd248131e8d43e33ad
SSDEEP

24576:+pomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttX:Soo

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
4420	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\evfflev\ImagePath = "C:\\Windows\\SysWOW64\\evfflev\\xvefokzv.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-1-5-21-4174397412-4125106315-2776226590-1000\Control Panel\International\Geo\Nation	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe

Deletes itself 1 IoCs

pid	Process
3484	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3592	xvefokzv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3592 set thread context of 3484	3592	xvefokzv.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
2192	sc.exe
4736	sc.exe
4136	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
2800	4956	WerFault.exe	83
3512	3592	WerFault.exe	99

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.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	xvefokzv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4956 wrote to memory of 4052	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	89
PID 4956 wrote to memory of 4052	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	89
PID 4956 wrote to memory of 4052	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	89
PID 4956 wrote to memory of 4068	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	91
PID 4956 wrote to memory of 4068	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	91
PID 4956 wrote to memory of 4068	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	91
PID 4956 wrote to memory of 2192	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	93
PID 4956 wrote to memory of 2192	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	93
PID 4956 wrote to memory of 2192	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	93
PID 4956 wrote to memory of 4736	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	95
PID 4956 wrote to memory of 4736	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	95
PID 4956 wrote to memory of 4736	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	95
PID 4956 wrote to memory of 4136	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	97
PID 4956 wrote to memory of 4136	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	97
PID 4956 wrote to memory of 4136	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	97
PID 4956 wrote to memory of 4420	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	100
PID 4956 wrote to memory of 4420	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	100
PID 4956 wrote to memory of 4420	4956	2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe	100
PID 3592 wrote to memory of 3484	3592	xvefokzv.exe	105
PID 3592 wrote to memory of 3484	3592	xvefokzv.exe	105
PID 3592 wrote to memory of 3484	3592	xvefokzv.exe	105
PID 3592 wrote to memory of 3484	3592	xvefokzv.exe	105
PID 3592 wrote to memory of 3484	3592	xvefokzv.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\evfflev\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xvefokzv.exe" C:\Windows\SysWOW64\evfflev\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create evfflev binPath= "C:\Windows\SysWOW64\evfflev\xvefokzv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description evfflev "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start evfflev
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4136
- 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:4420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4956 -s 1044
  2⤵
  - Program crash
  PID:2800

C:\Windows\SysWOW64\evfflev\xvefokzv.exe
C:\Windows\SysWOW64\evfflev\xvefokzv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-04_3b3e47c718feee8079f0b1eb167cd8b2_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3592
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3484
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3592 -s 508
  2⤵
  - Program crash
  PID:3512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4956 -ip 4956
1⤵
PID:2020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3592 -ip 3592
1⤵
PID:4680

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\xvefokzv.exe

Filesize
13.6MB

MD5
6176109d72ceafe7a8abe3cc955b1a37

SHA1
5a227835461cfeb74919ceaa3f26cc69adc8c5d5

SHA256
6a10eea3fa22dd27ed28b3b8e5de390edd68e4b38440ed8559d0d0b16156f46f

SHA512
5ee3cfba2424ea31738190058392daefdf119090f97245e010d2f6f0ca8e6b8989e4a5a64641411cc82f3f350f41b9ad3f40cb4600659db1a7756d3ecf7bec50

Download Submit
memory/3484-14-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3484-17-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3484-16-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/3592-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3592-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3592-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3592-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4956-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4956-8-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/4956-1-0x0000000000490000-0x0000000000590000-memory.dmp

Filesize
1024KB

Download
memory/4956-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4956-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4956-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads