tofsee | 7690f8c76d9dc0d466502e90e3bdd76a65d686951689cd8206fe4f52c7d8dd15

Analysis

max time kernel
143s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-01-2025 17:29

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General

Target

2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe
Size

12.5MB
MD5

63ecc6ae5ead70756bc0cfb4d32a8420
SHA1

8d1f15b231dc76c997f9819a76024570e560b196
SHA256

7690f8c76d9dc0d466502e90e3bdd76a65d686951689cd8206fe4f52c7d8dd15
SHA512

d653d485e465d9e264be720e063d30278957463c04bf46a5876dd1e206fb901afa1ea29c81313757f73452bf4db29dc5d0d605367226b9a0a922472b8b2e5838
SSDEEP

24576:WEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZd:Pfot

Score

10^/10

tofsee defense_evasion discovery 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

defense_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\zrqkakvs = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2728	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\zrqkakvs\ImagePath = "C:\\Windows\\SysWOW64\\zrqkakvs\\bsayidky.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
860	bsayidky.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 860 set thread context of 2640	860	bsayidky.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2816	sc.exe
2444	sc.exe
2744	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bsayidky.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	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	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 352 wrote to memory of 2672	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	30
PID 352 wrote to memory of 2672	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	30
PID 352 wrote to memory of 2672	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	30
PID 352 wrote to memory of 2672	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	30
PID 352 wrote to memory of 2828	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	32
PID 352 wrote to memory of 2828	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	32
PID 352 wrote to memory of 2828	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	32
PID 352 wrote to memory of 2828	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	32
PID 352 wrote to memory of 2816	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	34
PID 352 wrote to memory of 2816	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	34
PID 352 wrote to memory of 2816	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	34
PID 352 wrote to memory of 2816	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	34
PID 352 wrote to memory of 2444	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	36
PID 352 wrote to memory of 2444	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	36
PID 352 wrote to memory of 2444	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	36
PID 352 wrote to memory of 2444	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	36
PID 352 wrote to memory of 2744	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	38
PID 352 wrote to memory of 2744	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	38
PID 352 wrote to memory of 2744	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	38
PID 352 wrote to memory of 2744	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	38
PID 352 wrote to memory of 2728	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	41
PID 352 wrote to memory of 2728	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	41
PID 352 wrote to memory of 2728	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	41
PID 352 wrote to memory of 2728	352	2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe	41
PID 860 wrote to memory of 2640	860	bsayidky.exe	43
PID 860 wrote to memory of 2640	860	bsayidky.exe	43
PID 860 wrote to memory of 2640	860	bsayidky.exe	43
PID 860 wrote to memory of 2640	860	bsayidky.exe	43
PID 860 wrote to memory of 2640	860	bsayidky.exe	43
PID 860 wrote to memory of 2640	860	bsayidky.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:352
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zrqkakvs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bsayidky.exe" C:\Windows\SysWOW64\zrqkakvs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2828
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zrqkakvs binPath= "C:\Windows\SysWOW64\zrqkakvs\bsayidky.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zrqkakvs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zrqkakvs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- 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:2728

C:\Windows\SysWOW64\zrqkakvs\bsayidky.exe
C:\Windows\SysWOW64\zrqkakvs\bsayidky.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-29_63ecc6ae5ead70756bc0cfb4d32a8420_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:860
- 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:2640

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\bsayidky.exe

Filesize
10.8MB

MD5
2112e040516a666b6d6c5dc66b6e1538

SHA1
b1cba7b5057209df75b7d59827092cd3c7ad8490

SHA256
b0e1fd323e9dc2733e58945071b944069dc88a301ad886cc912c95b5440e8f39

SHA512
fd20e25a76926e397e9ab9d26ad6add18399f26e07a2fb5b627c14eba3e12b5042447a65c656bfe6b1be1225c92731fd24ea5a414e2a7f6cef01904fe71f2b86

Download Submit
memory/352-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/352-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/352-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/352-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/352-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/352-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/860-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2640-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2640-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads