tofsee | 0ce4c0093fe649941ca157dd892d42b0509692bf95956ada81094b17922d30cf

Analysis

max time kernel
144s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 20:17

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General

Target

2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe
Size

11.7MB
MD5

e83049b18c14959ed27446ef0efceba5
SHA1

283041dc1182663450547935b60ec42709412eda
SHA256

0ce4c0093fe649941ca157dd892d42b0509692bf95956ada81094b17922d30cf
SHA512

c7b8775c66e9bbf9bb0c8e0bb13cd8ffefa49e1649f50714fae6f835bd2a5b0ae3652d430a952625428e6b620371bb99be04319e7f10b1cd840db50be20caaf6
SSDEEP

3072:fLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:WOMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\kxasrfzd = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2768	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\kxasrfzd\ImagePath = "C:\\Windows\\SysWOW64\\kxasrfzd\\gcuurgft.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2744	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1508	gcuurgft.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1508 set thread context of 2744	1508	gcuurgft.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
1544	sc.exe
2980	sc.exe
2712	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

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	gcuurgft.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	2024-12-29_e83049b18c14959ed27446ef0efceba5_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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 2156	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	30
PID 2368 wrote to memory of 2156	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	30
PID 2368 wrote to memory of 2156	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	30
PID 2368 wrote to memory of 2156	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	30
PID 2368 wrote to memory of 2404	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	32
PID 2368 wrote to memory of 2404	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	32
PID 2368 wrote to memory of 2404	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	32
PID 2368 wrote to memory of 2404	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	32
PID 2368 wrote to memory of 1544	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	34
PID 2368 wrote to memory of 1544	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	34
PID 2368 wrote to memory of 1544	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	34
PID 2368 wrote to memory of 1544	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	34
PID 2368 wrote to memory of 2980	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	36
PID 2368 wrote to memory of 2980	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	36
PID 2368 wrote to memory of 2980	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	36
PID 2368 wrote to memory of 2980	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	36
PID 2368 wrote to memory of 2712	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	38
PID 2368 wrote to memory of 2712	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	38
PID 2368 wrote to memory of 2712	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	38
PID 2368 wrote to memory of 2712	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	38
PID 2368 wrote to memory of 2768	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	41
PID 2368 wrote to memory of 2768	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	41
PID 2368 wrote to memory of 2768	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	41
PID 2368 wrote to memory of 2768	2368	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	41
PID 1508 wrote to memory of 2744	1508	gcuurgft.exe	43
PID 1508 wrote to memory of 2744	1508	gcuurgft.exe	43
PID 1508 wrote to memory of 2744	1508	gcuurgft.exe	43
PID 1508 wrote to memory of 2744	1508	gcuurgft.exe	43
PID 1508 wrote to memory of 2744	1508	gcuurgft.exe	43
PID 1508 wrote to memory of 2744	1508	gcuurgft.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kxasrfzd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gcuurgft.exe" C:\Windows\SysWOW64\kxasrfzd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kxasrfzd binPath= "C:\Windows\SysWOW64\kxasrfzd\gcuurgft.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kxasrfzd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2980
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kxasrfzd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2712
- 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:2768

C:\Windows\SysWOW64\kxasrfzd\gcuurgft.exe
C:\Windows\SysWOW64\kxasrfzd\gcuurgft.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
11.0MB

MD5
0cdebe5289e023df45086a1a46011e62

SHA1
efed101e2ec68d0ef7694302914e8fcfe7008503

SHA256
516b681a2625ca924a1b9089d8837196fd4abf3e218b3e313f06bc764ad572d0

SHA512
9a622aedd222467d9c1c01f457499b3e21466e01523ebcc28e1c3315d2b34742624cee167f8ad25f42a9cb64e21bed21ec7da98ca89c7acf861c6d0dd905f10e

Download Submit
memory/1508-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2368-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2368-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2368-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2368-8-0x00000000003A0000-0x00000000003B3000-memory.dmp

Filesize
76KB

Download
memory/2368-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2368-2-0x00000000003A0000-0x00000000003B3000-memory.dmp

Filesize
76KB

Download
memory/2744-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads