tofsee | ac07bd844dd88ff07f954b2a9fdf3a21fe90b78bb2866862ee5ff00e5604b8ee

Analysis

max time kernel
145s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 20:39

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General

Target

2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe
Size

13.6MB
MD5

d2a6285281b9251fad852e6674d627d5
SHA1

00bae2fe3cf6f832252f453b8b3f1373b563b13c
SHA256

ac07bd844dd88ff07f954b2a9fdf3a21fe90b78bb2866862ee5ff00e5604b8ee
SHA512

1ede58994358725fa808b164cafc53e6f0ec383e747575b912cd0fa983bd584aef0c254da32c4cbeedfc1cdc67139b2d9d7ae450ca396cf9a194aeaa4b57ff0f
SSDEEP

49152:2qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:2qtYc3

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\rstlwiye = "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
2820	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\rstlwiye\ImagePath = "C:\\Windows\\SysWOW64\\rstlwiye\\yhbgyxso.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2352	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2876	yhbgyxso.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2876 set thread context of 2352	2876	yhbgyxso.exe	39

Launches sc.exe 3 IoCs

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

pid	Process
2752	sc.exe
2992	sc.exe
2632	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	sc.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yhbgyxso.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2936	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	28
PID 2408 wrote to memory of 2936	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	28
PID 2408 wrote to memory of 2936	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	28
PID 2408 wrote to memory of 2936	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	28
PID 2408 wrote to memory of 2064	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	30
PID 2408 wrote to memory of 2064	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	30
PID 2408 wrote to memory of 2064	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	30
PID 2408 wrote to memory of 2064	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	30
PID 2408 wrote to memory of 2992	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	32
PID 2408 wrote to memory of 2992	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	32
PID 2408 wrote to memory of 2992	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	32
PID 2408 wrote to memory of 2992	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	32
PID 2408 wrote to memory of 2632	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	34
PID 2408 wrote to memory of 2632	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	34
PID 2408 wrote to memory of 2632	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	34
PID 2408 wrote to memory of 2632	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	34
PID 2408 wrote to memory of 2752	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	36
PID 2408 wrote to memory of 2752	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	36
PID 2408 wrote to memory of 2752	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	36
PID 2408 wrote to memory of 2752	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	36
PID 2876 wrote to memory of 2352	2876	yhbgyxso.exe	39
PID 2876 wrote to memory of 2352	2876	yhbgyxso.exe	39
PID 2876 wrote to memory of 2352	2876	yhbgyxso.exe	39
PID 2876 wrote to memory of 2352	2876	yhbgyxso.exe	39
PID 2876 wrote to memory of 2352	2876	yhbgyxso.exe	39
PID 2876 wrote to memory of 2352	2876	yhbgyxso.exe	39
PID 2408 wrote to memory of 2820	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	40
PID 2408 wrote to memory of 2820	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	40
PID 2408 wrote to memory of 2820	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	40
PID 2408 wrote to memory of 2820	2408	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	40

C:\Users\Admin\AppData\Local\Temp\2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rstlwiye\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yhbgyxso.exe" C:\Windows\SysWOW64\rstlwiye\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rstlwiye binPath= "C:\Windows\SysWOW64\rstlwiye\yhbgyxso.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rstlwiye "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2632
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rstlwiye
  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:2820

C:\Windows\SysWOW64\rstlwiye\yhbgyxso.exe
C:\Windows\SysWOW64\rstlwiye\yhbgyxso.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- 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:2352

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\yhbgyxso.exe

Filesize
11.1MB

MD5
389bf032b9c6a97b03116ce2039579ac

SHA1
545dbc03e9e57c47d021f273851ffeb6b386e14b

SHA256
1378a98e9eeeaf3a6b7de727e5c6c4578bc0bc7457637d51b23adda4cb707435

SHA512
8408cf8565ca4c9ddd8a754544f28070195cb5671cae3d8d33286175984485ce02085d93bbeaef2f9e43d560eb930a02caa3884e40803518c78131f00f73dda1

Download Submit
memory/2352-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2352-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2352-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2352-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2352-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2408-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2408-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2408-1-0x0000000002E90000-0x0000000002F90000-memory.dmp

Filesize
1024KB

Download
memory/2408-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2408-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2408-14-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2876-13-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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