tofsee | 88363bf0c273a65c292dc131c24538ffa519d2ba016d287c4d9be0d921a4d949

Analysis

max time kernel
143s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/01/2025, 14:33

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General

Target

2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe
Size

12.7MB
MD5

97f05b514a867f29502c66a18573b6e1
SHA1

e3ad4e5ebb38ef6c1808e33ba73a8f94593748c6
SHA256

88363bf0c273a65c292dc131c24538ffa519d2ba016d287c4d9be0d921a4d949
SHA512

d4e00ff51b2dbeed0d3b9890d41c0ada4557488375f52484d5319264334c63f55d150f80383593f5d68ca076a30d92cf7b1a1c8f6e118f2c08e742f21d510a50
SSDEEP

24576:GEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZR:/fotj

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\fllxcxnz = "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
2884	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\fllxcxnz\ImagePath = "C:\\Windows\\SysWOW64\\fllxcxnz\\myxlwgoi.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3060	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2828	myxlwgoi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2828 set thread context of 3060	2828	myxlwgoi.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2420	sc.exe
2700	sc.exe
3064	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	myxlwgoi.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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 2196	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	30
PID 2480 wrote to memory of 2196	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	30
PID 2480 wrote to memory of 2196	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	30
PID 2480 wrote to memory of 2196	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	30
PID 2480 wrote to memory of 2464	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	32
PID 2480 wrote to memory of 2464	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	32
PID 2480 wrote to memory of 2464	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	32
PID 2480 wrote to memory of 2464	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	32
PID 2480 wrote to memory of 2420	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	34
PID 2480 wrote to memory of 2420	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	34
PID 2480 wrote to memory of 2420	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	34
PID 2480 wrote to memory of 2420	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	34
PID 2480 wrote to memory of 2700	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	36
PID 2480 wrote to memory of 2700	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	36
PID 2480 wrote to memory of 2700	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	36
PID 2480 wrote to memory of 2700	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	36
PID 2480 wrote to memory of 3064	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	38
PID 2480 wrote to memory of 3064	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	38
PID 2480 wrote to memory of 3064	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	38
PID 2480 wrote to memory of 3064	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	38
PID 2480 wrote to memory of 2884	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	41
PID 2480 wrote to memory of 2884	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	41
PID 2480 wrote to memory of 2884	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	41
PID 2480 wrote to memory of 2884	2480	2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe	41
PID 2828 wrote to memory of 3060	2828	myxlwgoi.exe	43
PID 2828 wrote to memory of 3060	2828	myxlwgoi.exe	43
PID 2828 wrote to memory of 3060	2828	myxlwgoi.exe	43
PID 2828 wrote to memory of 3060	2828	myxlwgoi.exe	43
PID 2828 wrote to memory of 3060	2828	myxlwgoi.exe	43
PID 2828 wrote to memory of 3060	2828	myxlwgoi.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fllxcxnz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2196
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\myxlwgoi.exe" C:\Windows\SysWOW64\fllxcxnz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fllxcxnz binPath= "C:\Windows\SysWOW64\fllxcxnz\myxlwgoi.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2420
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fllxcxnz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fllxcxnz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3064
- 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:2884

C:\Windows\SysWOW64\fllxcxnz\myxlwgoi.exe
C:\Windows\SysWOW64\fllxcxnz\myxlwgoi.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_97f05b514a867f29502c66a18573b6e1_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2828
- 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:3060

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\myxlwgoi.exe

Filesize
10.0MB

MD5
ae5749997901d9e85ec7d5ade4c30fd9

SHA1
21be10a44217c085e5b2f070f01032b4f8129783

SHA256
8a4d94da4b64c5f2fd7bcb407941b5fa7b8da16cf48448c42fb7c45c3ce2e401

SHA512
ffc19e66c3f2b6913e3c85cac19ff48dfae7fcf5e503c60bfc7420f1b8ebcb84bfa1f2059aa87a43313ae2a7599871010c20e7005dbd3c03b402f38b9067fc09

Download Submit
memory/2480-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2480-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2480-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2480-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2480-9-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2480-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2480-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2828-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3060-12-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/3060-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/3060-15-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/3060-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3060-19-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads