tofsee | ca525fe8bf95a32af296ac08e7a99b76bb7e06cb55e40d66ebff0228c9cb2186

Analysis

max time kernel
144s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/09/2024, 10:57

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General

Target

2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe
Size

11.6MB
MD5

ac20eaa882bf941cebe29670759c588e
SHA1

1811b68bbcdf114ed21fd6d50a4cafc1a15f11c1
SHA256

ca525fe8bf95a32af296ac08e7a99b76bb7e06cb55e40d66ebff0228c9cb2186
SHA512

defed9cd1f093a3b9d409446650b252fbbf36aed248358b256dc1c8150f92db7f2084d1618f06f5d6de0509daea443835c74a771b2d142705ac6919eadef325b
SSDEEP

6144:D+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:D+r1IeSXMXc7LlxWV4Ug97GZ+ej

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

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\gboucchf = "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\gboucchf\ImagePath = "C:\\Windows\\SysWOW64\\gboucchf\\kreehskf.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2896	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2776	kreehskf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2776 set thread context of 2896	2776	kreehskf.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2332	sc.exe
2156	sc.exe
2720	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	kreehskf.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1828 wrote to memory of 2388	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	30
PID 1828 wrote to memory of 2388	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	30
PID 1828 wrote to memory of 2388	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	30
PID 1828 wrote to memory of 2388	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	30
PID 1828 wrote to memory of 2136	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	32
PID 1828 wrote to memory of 2136	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	32
PID 1828 wrote to memory of 2136	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	32
PID 1828 wrote to memory of 2136	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	32
PID 1828 wrote to memory of 2332	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	34
PID 1828 wrote to memory of 2332	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	34
PID 1828 wrote to memory of 2332	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	34
PID 1828 wrote to memory of 2332	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	34
PID 1828 wrote to memory of 2156	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	36
PID 1828 wrote to memory of 2156	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	36
PID 1828 wrote to memory of 2156	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	36
PID 1828 wrote to memory of 2156	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	36
PID 1828 wrote to memory of 2720	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	38
PID 1828 wrote to memory of 2720	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	38
PID 1828 wrote to memory of 2720	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	38
PID 1828 wrote to memory of 2720	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	38
PID 2776 wrote to memory of 2896	2776	kreehskf.exe	41
PID 2776 wrote to memory of 2896	2776	kreehskf.exe	41
PID 2776 wrote to memory of 2896	2776	kreehskf.exe	41
PID 2776 wrote to memory of 2896	2776	kreehskf.exe	41
PID 2776 wrote to memory of 2896	2776	kreehskf.exe	41
PID 2776 wrote to memory of 2896	2776	kreehskf.exe	41
PID 1828 wrote to memory of 2972	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	42
PID 1828 wrote to memory of 2972	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	42
PID 1828 wrote to memory of 2972	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	42
PID 1828 wrote to memory of 2972	1828	2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gboucchf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kreehskf.exe" C:\Windows\SysWOW64\gboucchf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gboucchf binPath= "C:\Windows\SysWOW64\gboucchf\kreehskf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gboucchf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gboucchf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2720
- 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\gboucchf\kreehskf.exe
C:\Windows\SysWOW64\gboucchf\kreehskf.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-09-03_ac20eaa882bf941cebe29670759c588e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2776
- 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:2896

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\kreehskf.exe

Filesize
10.4MB

MD5
1c1323cf707fafdf1f7ef48598069e2e

SHA1
ee7860750369521fafa184488a55140192af367b

SHA256
2b6866b392a0a2622228b6321166371f6c14fc8ff654bef06324a595075c2455

SHA512
f8b62663e0295554de07b511fa4d94398d4ba2c2bc2724d773cd8450a01c7602e4daa0b5b65e37d049783fe7e7517171662b6093eac174dc32fc1e3f5c5162ff

Download Submit
memory/1828-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/1828-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1828-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/1828-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1828-14-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/2776-12-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2896-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2896-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2896-7-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2896-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2896-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads