tofsee | 25ea713eaea092a55c88031ea995a15a520d68f0f6b2d6b48a9028cebeb93ae0

Analysis

max time kernel
145s
max time network
122s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22-01-2025 19:10

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General

Target

2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe
Size

14.2MB
MD5

523d1fcb30b0be55025f943dd2ea782c
SHA1

46f37da9a49c94ca28ffd85d6f2755e4092d8828
SHA256

25ea713eaea092a55c88031ea995a15a520d68f0f6b2d6b48a9028cebeb93ae0
SHA512

eb2cbdec907789cc52c2458cb75e0f333b400c35be2dbadbdcf9e2339084dd4a48a3d9179de0403dd1aa7a37d10a04252338c5fe8b8bf02e4ffe35947ca3a44f
SSDEEP

24576:sEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZj: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\bcfesgtu = "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
2836	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\bcfesgtu\ImagePath = "C:\\Windows\\SysWOW64\\bcfesgtu\\lykhansc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2984	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2904	lykhansc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2904 set thread context of 2984	2904	lykhansc.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2524	sc.exe
2196	sc.exe
2876	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_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	lykhansc.exe
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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 2092	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	31
PID 1248 wrote to memory of 2092	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	31
PID 1248 wrote to memory of 2092	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	31
PID 1248 wrote to memory of 2092	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	31
PID 1248 wrote to memory of 2504	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	33
PID 1248 wrote to memory of 2504	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	33
PID 1248 wrote to memory of 2504	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	33
PID 1248 wrote to memory of 2504	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	33
PID 1248 wrote to memory of 2524	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	35
PID 1248 wrote to memory of 2524	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	35
PID 1248 wrote to memory of 2524	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	35
PID 1248 wrote to memory of 2524	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	35
PID 1248 wrote to memory of 2196	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	37
PID 1248 wrote to memory of 2196	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	37
PID 1248 wrote to memory of 2196	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	37
PID 1248 wrote to memory of 2196	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	37
PID 1248 wrote to memory of 2876	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	39
PID 1248 wrote to memory of 2876	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	39
PID 1248 wrote to memory of 2876	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	39
PID 1248 wrote to memory of 2876	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	39
PID 2904 wrote to memory of 2984	2904	lykhansc.exe	42
PID 2904 wrote to memory of 2984	2904	lykhansc.exe	42
PID 2904 wrote to memory of 2984	2904	lykhansc.exe	42
PID 2904 wrote to memory of 2984	2904	lykhansc.exe	42
PID 2904 wrote to memory of 2984	2904	lykhansc.exe	42
PID 2904 wrote to memory of 2984	2904	lykhansc.exe	42
PID 1248 wrote to memory of 2836	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	43
PID 1248 wrote to memory of 2836	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	43
PID 1248 wrote to memory of 2836	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	43
PID 1248 wrote to memory of 2836	1248	2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bcfesgtu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lykhansc.exe" C:\Windows\SysWOW64\bcfesgtu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bcfesgtu binPath= "C:\Windows\SysWOW64\bcfesgtu\lykhansc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2524
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bcfesgtu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2196
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bcfesgtu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2876
- 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:2836

C:\Windows\SysWOW64\bcfesgtu\lykhansc.exe
C:\Windows\SysWOW64\bcfesgtu\lykhansc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-22_523d1fcb30b0be55025f943dd2ea782c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2904
- 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:2984

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\lykhansc.exe

Filesize
12.5MB

MD5
cfb34dc8c989c7ad738e3300917028d1

SHA1
b6ce389b971cd8512548aad7a902b5923bfdb8d5

SHA256
a2a7f987e323def699552c842868c959c12c09cd711e19d53d4572eb15a4d018

SHA512
d8a6069c4becec25bb8dcbec6487b740eeefc66bacd694cec47114c2890f45563ae93db8d26d1040eb1a2e3dac78a836fb55c05752ce7359e7dd3c75f88ae335

Download Submit
memory/1248-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1248-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1248-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1248-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1248-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/1248-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2904-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2984-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2984-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2984-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2984-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2984-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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