tofsee | f3a8c2d16920ba9ddd77b50a952d68c13c62b4eecc0a98c852c4b09527e2f648

Analysis

max time kernel
148s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-12-2024 23:05

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General

Target

2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe
Size

13.7MB
MD5

44fa99d7aeb4ab3d8be4d018239719f7
SHA1

f19699efd23cf3fdf1ebdefc680a5b7927bf5f2d
SHA256

f3a8c2d16920ba9ddd77b50a952d68c13c62b4eecc0a98c852c4b09527e2f648
SHA512

d5377d7fb5a9e556e499604b20b3d3512ead3dbffca557efca1ff2721c68f9a625431557e143e4213b0ae8130f899a4f67ff2537b547641dc4e789fd82fcbc67
SSDEEP

24576:MXzqpE5DpEMMMMMMMb4zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz:MXPVpEMMMMMMMb

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\syriveop = "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
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\syriveop\ImagePath = "C:\\Windows\\SysWOW64\\syriveop\\lcvyfsed.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1880	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2860	lcvyfsed.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2860 set thread context of 1880	2860	lcvyfsed.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2888	sc.exe
2472	sc.exe
2740	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lcvyfsed.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.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 2148 wrote to memory of 2052	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	30
PID 2148 wrote to memory of 2052	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	30
PID 2148 wrote to memory of 2052	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	30
PID 2148 wrote to memory of 2052	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	30
PID 2148 wrote to memory of 2360	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	32
PID 2148 wrote to memory of 2360	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	32
PID 2148 wrote to memory of 2360	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	32
PID 2148 wrote to memory of 2360	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	32
PID 2148 wrote to memory of 2888	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	34
PID 2148 wrote to memory of 2888	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	34
PID 2148 wrote to memory of 2888	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	34
PID 2148 wrote to memory of 2888	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	34
PID 2148 wrote to memory of 2472	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	36
PID 2148 wrote to memory of 2472	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	36
PID 2148 wrote to memory of 2472	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	36
PID 2148 wrote to memory of 2472	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	36
PID 2148 wrote to memory of 2740	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	38
PID 2148 wrote to memory of 2740	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	38
PID 2148 wrote to memory of 2740	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	38
PID 2148 wrote to memory of 2740	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	38
PID 2148 wrote to memory of 2876	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	41
PID 2148 wrote to memory of 2876	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	41
PID 2148 wrote to memory of 2876	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	41
PID 2148 wrote to memory of 2876	2148	2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe	41
PID 2860 wrote to memory of 1880	2860	lcvyfsed.exe	44
PID 2860 wrote to memory of 1880	2860	lcvyfsed.exe	44
PID 2860 wrote to memory of 1880	2860	lcvyfsed.exe	44
PID 2860 wrote to memory of 1880	2860	lcvyfsed.exe	44
PID 2860 wrote to memory of 1880	2860	lcvyfsed.exe	44
PID 2860 wrote to memory of 1880	2860	lcvyfsed.exe	44

C:\Users\Admin\AppData\Local\Temp\2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\syriveop\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lcvyfsed.exe" C:\Windows\SysWOW64\syriveop\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2360
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create syriveop binPath= "C:\Windows\SysWOW64\syriveop\lcvyfsed.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2888
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description syriveop "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start syriveop
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- 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\syriveop\lcvyfsed.exe
C:\Windows\SysWOW64\syriveop\lcvyfsed.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-01_44fa99d7aeb4ab3d8be4d018239719f7_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2860
- 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:1880

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\lcvyfsed.exe

Filesize
13.7MB

MD5
44fa99d7aeb4ab3d8be4d018239719f7

SHA1
f19699efd23cf3fdf1ebdefc680a5b7927bf5f2d

SHA256
f3a8c2d16920ba9ddd77b50a952d68c13c62b4eecc0a98c852c4b09527e2f648

SHA512
d5377d7fb5a9e556e499604b20b3d3512ead3dbffca557efca1ff2721c68f9a625431557e143e4213b0ae8130f899a4f67ff2537b547641dc4e789fd82fcbc67

Download Submit
memory/1880-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1880-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1880-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1880-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1880-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2148-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2148-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2148-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2148-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2148-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2148-1-0x0000000000530000-0x0000000000630000-memory.dmp

Filesize
1024KB

Download
memory/2860-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads