tofsee | b0bdf6212ea9483d04f5ad47a0d4af05f379eeddbee38b13627ad921af336bf3

Analysis

max time kernel
148s
max time network
118s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 18:52

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General

Target

2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe
Size

11.3MB
MD5

041bff40cf772c28086f2136218489f2
SHA1

a933c80b433a90b7985599f6d7b4a498cf2c75d7
SHA256

b0bdf6212ea9483d04f5ad47a0d4af05f379eeddbee38b13627ad921af336bf3
SHA512

77c8cf466a70b5ff5545d2fe997b48c84f090f3e63c48ed9df087c5bbf76d00f2132a3173fd792caee7c12621adafd08fddb72631d11025edcc2204d15cf39c5
SSDEEP

3072:RLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:UOMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee discovery evasion 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

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\ykgvqnrm = "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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2972	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\ykgvqnrm\ImagePath = "C:\\Windows\\SysWOW64\\ykgvqnrm\\tvqwpcm.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2684	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3032	tvqwpcm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3032 set thread context of 2684	3032	tvqwpcm.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2632	sc.exe
2824	sc.exe
2948	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tvqwpcm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 2620	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	30
PID 2604 wrote to memory of 2620	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	30
PID 2604 wrote to memory of 2620	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	30
PID 2604 wrote to memory of 2620	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	30
PID 2604 wrote to memory of 1712	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	32
PID 2604 wrote to memory of 1712	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	32
PID 2604 wrote to memory of 1712	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	32
PID 2604 wrote to memory of 1712	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	32
PID 2604 wrote to memory of 2632	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	34
PID 2604 wrote to memory of 2632	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	34
PID 2604 wrote to memory of 2632	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	34
PID 2604 wrote to memory of 2632	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	34
PID 2604 wrote to memory of 2824	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	36
PID 2604 wrote to memory of 2824	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	36
PID 2604 wrote to memory of 2824	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	36
PID 2604 wrote to memory of 2824	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	36
PID 2604 wrote to memory of 2948	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	38
PID 2604 wrote to memory of 2948	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	38
PID 2604 wrote to memory of 2948	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	38
PID 2604 wrote to memory of 2948	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	38
PID 3032 wrote to memory of 2684	3032	tvqwpcm.exe	41
PID 3032 wrote to memory of 2684	3032	tvqwpcm.exe	41
PID 3032 wrote to memory of 2684	3032	tvqwpcm.exe	41
PID 3032 wrote to memory of 2684	3032	tvqwpcm.exe	41
PID 3032 wrote to memory of 2684	3032	tvqwpcm.exe	41
PID 3032 wrote to memory of 2684	3032	tvqwpcm.exe	41
PID 2604 wrote to memory of 2972	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	42
PID 2604 wrote to memory of 2972	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	42
PID 2604 wrote to memory of 2972	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	42
PID 2604 wrote to memory of 2972	2604	2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ykgvqnrm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tvqwpcm.exe" C:\Windows\SysWOW64\ykgvqnrm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ykgvqnrm binPath= "C:\Windows\SysWOW64\ykgvqnrm\tvqwpcm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2632
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ykgvqnrm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ykgvqnrm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2948
- 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:2972

C:\Windows\SysWOW64\ykgvqnrm\tvqwpcm.exe
C:\Windows\SysWOW64\ykgvqnrm\tvqwpcm.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-31_041bff40cf772c28086f2136218489f2_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3032
- 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:2684

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\tvqwpcm.exe

Filesize
14.1MB

MD5
c2ef4a5a8c39adf8f3ff453918f4688c

SHA1
47ac96f6f8dc93f5ec227f6394460d849de424c9

SHA256
1b512339fa7e7cdf3799e284cf60374a8da44d231266fb9608524c7162147811

SHA512
9364ee0fb8c2c53c7e86307547d948a2b7ad0dd0ff41c4c2b0f8c1d858f13f6f2d354636c2743ce948146fa7be95c9b750914e6de810750499657c03821b8dba

Download Submit
memory/2604-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2604-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2604-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2604-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2604-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/2604-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2684-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2684-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2684-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2684-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2684-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3032-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads