tofsee | 88a0ec5661e4053db3ae743ca0067ca44181f19c8045bf16e92b82f284c1f612

Analysis

max time kernel
157s
max time network
154s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
08/02/2025, 00:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe
Size

10.0MB
MD5

a17dce0792745f3ab8c94aefd70493c5
SHA1

47bde0b942b246e5a5f99722c1bca39b8cd3e277
SHA256

88a0ec5661e4053db3ae743ca0067ca44181f19c8045bf16e92b82f284c1f612
SHA512

786e6afc7dd2093eacee1db34e88ba3258a7fd2accfae5e9cca4f2ebc664bce8425a2b680335afacbcf6172338b118f8d388d778bfbc53b0cef95b151f7c388e
SSDEEP

24576:vpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttn:hoo

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\kvuidgyy = "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
2876	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\kvuidgyy\ImagePath = "C:\\Windows\\SysWOW64\\kvuidgyy\\yatelthx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2820	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2664	yatelthx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2664 set thread context of 2820	2664	yatelthx.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2520	sc.exe
2248	sc.exe
2220	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	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yatelthx.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 2124	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	31
PID 2500 wrote to memory of 2124	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	31
PID 2500 wrote to memory of 2124	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	31
PID 2500 wrote to memory of 2124	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	31
PID 2500 wrote to memory of 2212	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	33
PID 2500 wrote to memory of 2212	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	33
PID 2500 wrote to memory of 2212	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	33
PID 2500 wrote to memory of 2212	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	33
PID 2500 wrote to memory of 2520	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	35
PID 2500 wrote to memory of 2520	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	35
PID 2500 wrote to memory of 2520	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	35
PID 2500 wrote to memory of 2520	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	35
PID 2500 wrote to memory of 2248	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	37
PID 2500 wrote to memory of 2248	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	37
PID 2500 wrote to memory of 2248	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	37
PID 2500 wrote to memory of 2248	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	37
PID 2500 wrote to memory of 2220	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	39
PID 2500 wrote to memory of 2220	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	39
PID 2500 wrote to memory of 2220	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	39
PID 2500 wrote to memory of 2220	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	39
PID 2500 wrote to memory of 2876	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	41
PID 2500 wrote to memory of 2876	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	41
PID 2500 wrote to memory of 2876	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	41
PID 2500 wrote to memory of 2876	2500	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	41
PID 2664 wrote to memory of 2820	2664	yatelthx.exe	44
PID 2664 wrote to memory of 2820	2664	yatelthx.exe	44
PID 2664 wrote to memory of 2820	2664	yatelthx.exe	44
PID 2664 wrote to memory of 2820	2664	yatelthx.exe	44
PID 2664 wrote to memory of 2820	2664	yatelthx.exe	44
PID 2664 wrote to memory of 2820	2664	yatelthx.exe	44

C:\Users\Admin\AppData\Local\Temp\2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kvuidgyy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2124
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yatelthx.exe" C:\Windows\SysWOW64\kvuidgyy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kvuidgyy binPath= "C:\Windows\SysWOW64\kvuidgyy\yatelthx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kvuidgyy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2248
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kvuidgyy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2220
- 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:2876

C:\Windows\SysWOW64\kvuidgyy\yatelthx.exe
C:\Windows\SysWOW64\kvuidgyy\yatelthx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2664
- 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:2820

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\yatelthx.exe

Filesize
14.4MB

MD5
02f19a0c0ad30ddf4742495331794cb8

SHA1
0646634e075e23a4be89ada99c38ba3f6d4a28b6

SHA256
5c773e6a6e607d507dd84acd0b1302a36316da649b0f7293fb3107011472f576

SHA512
868702c024d815a1f00629c23538374c347a867573081b972e69209bcefecab04a8e88d6ddeb5200f6df1cdc838826f062a75d34d8beb49e43efe5aae4e915b8

Download Submit
memory/2500-7-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2500-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2500-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2500-6-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2500-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2500-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2664-15-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2820-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads