tofsee | eb1b2feb98b59beb0cd5075eac33337fa02a833b70bccd700c7ed03058064324

Analysis

max time kernel
176s
max time network
193s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
08/02/2025, 01:02

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General

Target

2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe
Size

12.4MB
MD5

cfe362a77d9e209fcc14e0ec1d3d41c4
SHA1

46ef445a2451b71801e75698aae629a6fd23b71b
SHA256

eb1b2feb98b59beb0cd5075eac33337fa02a833b70bccd700c7ed03058064324
SHA512

795a15b7fc1075824b37440fa7e03cd475c7a1c48607f713b18ed1eb99c1d54199daaef7ea575eb70f13fa6b761cb45371ae6918feb3521cea0e7d4a99d11653
SSDEEP

3072:XLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:uOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\gkqmdavb = "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
1672	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\gkqmdavb\ImagePath = "C:\\Windows\\SysWOW64\\gkqmdavb\\kfjbrcec.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2972	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2316	kfjbrcec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2316 set thread context of 2972	2316	kfjbrcec.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
688	sc.exe
2668	sc.exe
964	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kfjbrcec.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2900 wrote to memory of 2876	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	29
PID 2900 wrote to memory of 2876	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	29
PID 2900 wrote to memory of 2876	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	29
PID 2900 wrote to memory of 2876	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	29
PID 2900 wrote to memory of 2636	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	31
PID 2900 wrote to memory of 2636	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	31
PID 2900 wrote to memory of 2636	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	31
PID 2900 wrote to memory of 2636	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	31
PID 2900 wrote to memory of 688	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	33
PID 2900 wrote to memory of 688	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	33
PID 2900 wrote to memory of 688	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	33
PID 2900 wrote to memory of 688	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	33
PID 2900 wrote to memory of 2668	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	35
PID 2900 wrote to memory of 2668	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	35
PID 2900 wrote to memory of 2668	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	35
PID 2900 wrote to memory of 2668	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	35
PID 2900 wrote to memory of 964	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	37
PID 2900 wrote to memory of 964	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	37
PID 2900 wrote to memory of 964	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	37
PID 2900 wrote to memory of 964	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	37
PID 2900 wrote to memory of 1672	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	39
PID 2900 wrote to memory of 1672	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	39
PID 2900 wrote to memory of 1672	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	39
PID 2900 wrote to memory of 1672	2900	2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe	39
PID 2316 wrote to memory of 2972	2316	kfjbrcec.exe	42
PID 2316 wrote to memory of 2972	2316	kfjbrcec.exe	42
PID 2316 wrote to memory of 2972	2316	kfjbrcec.exe	42
PID 2316 wrote to memory of 2972	2316	kfjbrcec.exe	42
PID 2316 wrote to memory of 2972	2316	kfjbrcec.exe	42
PID 2316 wrote to memory of 2972	2316	kfjbrcec.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gkqmdavb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kfjbrcec.exe" C:\Windows\SysWOW64\gkqmdavb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gkqmdavb binPath= "C:\Windows\SysWOW64\gkqmdavb\kfjbrcec.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gkqmdavb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gkqmdavb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:964
- 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:1672

C:\Windows\SysWOW64\gkqmdavb\kfjbrcec.exe
C:\Windows\SysWOW64\gkqmdavb\kfjbrcec.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-08_cfe362a77d9e209fcc14e0ec1d3d41c4_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- 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:2972

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\kfjbrcec.exe

Filesize
10.2MB

MD5
69616142982ee3b512824b172aa87977

SHA1
dee081a1229b69b526f1c5c72c893a28a13b569f

SHA256
2e52a82b695f8b0d4247b27de2189e852b277602277b9e2548fbd5dd73c0978e

SHA512
14aa2d2cca0d4f214c3d2af497db9f18a84344180852a784fa34542c0815bdb1111b0d4b798adfff782f0d0e33cb630f6d4a9cf77b5149942e96769507816ce1

Download Submit
memory/2316-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2900-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2900-2-0x00000000003A0000-0x00000000003B3000-memory.dmp

Filesize
76KB

Download
memory/2900-7-0x00000000003A0000-0x00000000003B3000-memory.dmp

Filesize
76KB

Download
memory/2900-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2900-6-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2900-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2972-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2972-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2972-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2972-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2972-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads