tofsee | 23be3499b2b9a7e01237488f80243a36b9be5d528a0ec85a717cd4b0104ddbe8

Analysis

max time kernel
144s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-01-2025 22:13

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General

Target

2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe
Size

12.9MB
MD5

6a397c7bc04ae63117f5925e9b9fd54f
SHA1

940657256af629fa51b70bc05779ef0976c63637
SHA256

23be3499b2b9a7e01237488f80243a36b9be5d528a0ec85a717cd4b0104ddbe8
SHA512

4dfb4f3e74ed91757bed613051d5cca3ed2b844e0eb72aa074d8540c01711d18e6707c93d5245f0bc685a2f6b5c3f5af1b75b0df38298f79b3e39312260eac83
SSDEEP

24576:WEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZT: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\bjsylytv = "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
2028	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\bjsylytv\ImagePath = "C:\\Windows\\SysWOW64\\bjsylytv\\hfopyujf.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2732	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2860	hfopyujf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2860 set thread context of 2732	2860	hfopyujf.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2752	sc.exe
2708	sc.exe
2976	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.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	hfopyujf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 2580	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	30
PID 1984 wrote to memory of 2580	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	30
PID 1984 wrote to memory of 2580	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	30
PID 1984 wrote to memory of 2580	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	30
PID 1984 wrote to memory of 3048	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	32
PID 1984 wrote to memory of 3048	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	32
PID 1984 wrote to memory of 3048	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	32
PID 1984 wrote to memory of 3048	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	32
PID 1984 wrote to memory of 2976	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	34
PID 1984 wrote to memory of 2976	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	34
PID 1984 wrote to memory of 2976	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	34
PID 1984 wrote to memory of 2976	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	34
PID 1984 wrote to memory of 2708	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	36
PID 1984 wrote to memory of 2708	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	36
PID 1984 wrote to memory of 2708	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	36
PID 1984 wrote to memory of 2708	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	36
PID 1984 wrote to memory of 2752	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	38
PID 1984 wrote to memory of 2752	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	38
PID 1984 wrote to memory of 2752	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	38
PID 1984 wrote to memory of 2752	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	38
PID 2860 wrote to memory of 2732	2860	hfopyujf.exe	41
PID 2860 wrote to memory of 2732	2860	hfopyujf.exe	41
PID 2860 wrote to memory of 2732	2860	hfopyujf.exe	41
PID 2860 wrote to memory of 2732	2860	hfopyujf.exe	41
PID 2860 wrote to memory of 2732	2860	hfopyujf.exe	41
PID 2860 wrote to memory of 2732	2860	hfopyujf.exe	41
PID 1984 wrote to memory of 2028	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	42
PID 1984 wrote to memory of 2028	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	42
PID 1984 wrote to memory of 2028	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	42
PID 1984 wrote to memory of 2028	1984	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bjsylytv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2580
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hfopyujf.exe" C:\Windows\SysWOW64\bjsylytv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3048
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bjsylytv binPath= "C:\Windows\SysWOW64\bjsylytv\hfopyujf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bjsylytv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bjsylytv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- 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:2028

C:\Windows\SysWOW64\bjsylytv\hfopyujf.exe
C:\Windows\SysWOW64\bjsylytv\hfopyujf.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2860
- 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:2732

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:\Windows\SysWOW64\bjsylytv\hfopyujf.exe

Filesize
12.7MB

MD5
a569a606d8f7d78cbc8cc8079d3e3b33

SHA1
925c9a3866ff0b43b0094deac3f73dfc85e3dd17

SHA256
82ca18b1286b2943b321b0194c74eba2a00ae82a69aed33e30d34ac8dd64217a

SHA512
8a26597b4cc34940bf1416748756806604ee9a21d9cfc74c66364d1e6f13ec895c971f6224f0c5b6824163282a10a47ba06b273d34d54ea24a4692062f0eb745

Download Submit
memory/1984-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1984-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1984-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1984-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1984-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1984-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2732-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2732-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2732-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2732-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2732-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2860-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads