tofsee | f2d758e05d0e380196f604d9de948346405497b8f320a0aba3f1ec97e590b324

Analysis

max time kernel
145s
max time network
134s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-02-2025 20:02

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General

Target

2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe
Size

11.8MB
MD5

8e63e31e5c628ebde84d3646cf546c10
SHA1

5c7524014c08593aad0c11c5cde3a8d41d542f86
SHA256

f2d758e05d0e380196f604d9de948346405497b8f320a0aba3f1ec97e590b324
SHA512

ea8dec03c618443a6abc92828ce5bc88d3d0f4f013a369c5f916f29189db29c48959defe459b6928ec17dfabf7929e4c4cf2c6e641d11b693052137721649cfc
SSDEEP

196608:LyXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX8:mXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXM

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\bkelrjfq = "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
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\bkelrjfq\ImagePath = "C:\\Windows\\SysWOW64\\bkelrjfq\\bzijsodz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2596	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2864	bzijsodz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2864 set thread context of 2596	2864	bzijsodz.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2856	sc.exe
1644	sc.exe
2744	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	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bzijsodz.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	svchost.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 1888	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	31
PID 2536 wrote to memory of 1888	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	31
PID 2536 wrote to memory of 1888	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	31
PID 2536 wrote to memory of 1888	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	31
PID 2536 wrote to memory of 2368	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	33
PID 2536 wrote to memory of 2368	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	33
PID 2536 wrote to memory of 2368	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	33
PID 2536 wrote to memory of 2368	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	33
PID 2536 wrote to memory of 2744	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	35
PID 2536 wrote to memory of 2744	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	35
PID 2536 wrote to memory of 2744	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	35
PID 2536 wrote to memory of 2744	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	35
PID 2536 wrote to memory of 2856	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	37
PID 2536 wrote to memory of 2856	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	37
PID 2536 wrote to memory of 2856	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	37
PID 2536 wrote to memory of 2856	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	37
PID 2536 wrote to memory of 1644	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	39
PID 2536 wrote to memory of 1644	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	39
PID 2536 wrote to memory of 1644	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	39
PID 2536 wrote to memory of 1644	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	39
PID 2536 wrote to memory of 2876	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	41
PID 2536 wrote to memory of 2876	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	41
PID 2536 wrote to memory of 2876	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	41
PID 2536 wrote to memory of 2876	2536	2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe	41
PID 2864 wrote to memory of 2596	2864	bzijsodz.exe	44
PID 2864 wrote to memory of 2596	2864	bzijsodz.exe	44
PID 2864 wrote to memory of 2596	2864	bzijsodz.exe	44
PID 2864 wrote to memory of 2596	2864	bzijsodz.exe	44
PID 2864 wrote to memory of 2596	2864	bzijsodz.exe	44
PID 2864 wrote to memory of 2596	2864	bzijsodz.exe	44

C:\Users\Admin\AppData\Local\Temp\2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bkelrjfq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1888
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bzijsodz.exe" C:\Windows\SysWOW64\bkelrjfq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bkelrjfq binPath= "C:\Windows\SysWOW64\bkelrjfq\bzijsodz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bkelrjfq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bkelrjfq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1644
- 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\bkelrjfq\bzijsodz.exe
C:\Windows\SysWOW64\bkelrjfq\bzijsodz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_8e63e31e5c628ebde84d3646cf546c10_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2864
- 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:2596

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\bzijsodz.exe

Filesize
13.4MB

MD5
cff566212ccb60194a527ceeb67dbda6

SHA1
95cfeae0d63facccb5127c0ddfaafc663372d0a9

SHA256
73d59c9a1a7939db7fb146bf9094a805d0f433ee0a957dbd5445f50700c694ec

SHA512
1eb5821c0b121eb9305c6682867446e5ebb1c1efbc8c42e6dd84b7b194413e6fa1f27426f9e6fc0f483c8e630d2b714ff025b126e761401cd928af47800ac36e

Download Submit
memory/2536-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2536-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2536-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2536-6-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2536-7-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2536-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2536-8-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2596-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2596-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2596-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2596-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2596-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2864-18-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads