tofsee | a740950cb54ce7abb6840c2053dcd15c60a414976ba39184e52447622e634d77

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
02-02-2025 20:10

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General

Target

2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe
Size

14.7MB
MD5

35496f3210be76bdf152e68c2d006c97
SHA1

71edf2a785a3d8c2c202115c56a915c0055b82c6
SHA256

a740950cb54ce7abb6840c2053dcd15c60a414976ba39184e52447622e634d77
SHA512

7abd43f7c0de5ce5b6ef72d8e5c9d3e72698aadc48049dfafd72a449fcec149580e241da52b94ae341e21b7de8855801431d3079d26a14696a24cbf9d9d13b8e
SSDEEP

24576:UpomTTN9ttttttttttttttttttttttttttttttttttttttttttttttttttttttt3:goo

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\bhzyyxtv = "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
2852	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\bhzyyxtv\ImagePath = "C:\\Windows\\SysWOW64\\bhzyyxtv\\vrjjgvui.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2992	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2972	vrjjgvui.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2972 set thread context of 2992	2972	vrjjgvui.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2884	sc.exe
2588	sc.exe
2960	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vrjjgvui.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	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 2604	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	30
PID 3064 wrote to memory of 2604	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	30
PID 3064 wrote to memory of 2604	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	30
PID 3064 wrote to memory of 2604	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	30
PID 3064 wrote to memory of 2536	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	32
PID 3064 wrote to memory of 2536	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	32
PID 3064 wrote to memory of 2536	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	32
PID 3064 wrote to memory of 2536	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	32
PID 3064 wrote to memory of 2884	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	34
PID 3064 wrote to memory of 2884	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	34
PID 3064 wrote to memory of 2884	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	34
PID 3064 wrote to memory of 2884	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	34
PID 3064 wrote to memory of 2588	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	36
PID 3064 wrote to memory of 2588	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	36
PID 3064 wrote to memory of 2588	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	36
PID 3064 wrote to memory of 2588	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	36
PID 3064 wrote to memory of 2960	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	38
PID 3064 wrote to memory of 2960	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	38
PID 3064 wrote to memory of 2960	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	38
PID 3064 wrote to memory of 2960	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	38
PID 3064 wrote to memory of 2852	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	41
PID 3064 wrote to memory of 2852	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	41
PID 3064 wrote to memory of 2852	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	41
PID 3064 wrote to memory of 2852	3064	2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe	41
PID 2972 wrote to memory of 2992	2972	vrjjgvui.exe	43
PID 2972 wrote to memory of 2992	2972	vrjjgvui.exe	43
PID 2972 wrote to memory of 2992	2972	vrjjgvui.exe	43
PID 2972 wrote to memory of 2992	2972	vrjjgvui.exe	43
PID 2972 wrote to memory of 2992	2972	vrjjgvui.exe	43
PID 2972 wrote to memory of 2992	2972	vrjjgvui.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bhzyyxtv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2604
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vrjjgvui.exe" C:\Windows\SysWOW64\bhzyyxtv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bhzyyxtv binPath= "C:\Windows\SysWOW64\bhzyyxtv\vrjjgvui.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bhzyyxtv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bhzyyxtv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2960
- 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:2852

C:\Windows\SysWOW64\bhzyyxtv\vrjjgvui.exe
C:\Windows\SysWOW64\bhzyyxtv\vrjjgvui.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_35496f3210be76bdf152e68c2d006c97_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2972
- 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:2992

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\vrjjgvui.exe

Filesize
12.0MB

MD5
1802b8557871548d759250d2d23e8c3f

SHA1
31cd5ba1c0b0182c739e9dccedb8c9b98593b511

SHA256
d2663f3cb43952f6c81865da160cd30175d8ca01ee4e063065f95f69d1153594

SHA512
d4d8a05c89f615a303d040d58a76526740316c55db088ad65759e3e06b1f064b5fee23186feb57a6f0b95a0da5dacdd934d59180a3b037d453a1713af36e4e76

Download Submit
memory/2972-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2992-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2992-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2992-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2992-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2992-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3064-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3064-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3064-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3064-8-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3064-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3064-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads