tofsee | 9d259bcefc553fdc88ba449d2f43ccaf99bb32a8c60e61117a1b9fbde824bba3

Analysis

max time kernel
144s
max time network
119s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
19-01-2025 20:12

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General

Target

2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe
Size

14.4MB
MD5

0db1476a4c3fee73d3836036a076bfdd
SHA1

afc59f2b7ca2772330e9dbcd9776912d3a6bb043
SHA256

9d259bcefc553fdc88ba449d2f43ccaf99bb32a8c60e61117a1b9fbde824bba3
SHA512

9425d74c11d1eca8d87e6f8285e96c1a677561bc20cace49963fd1bd0d6e33d0b79ef592b1cd9c1528089b10f8b5a86969f59cb38eb72fa7d38808fb03b74ca4
SSDEEP

24576:YEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZN:Vfot

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\kbwtnbyi = "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
2760	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\kbwtnbyi\ImagePath = "C:\\Windows\\SysWOW64\\kbwtnbyi\\acvgnvjz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2708	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2752	acvgnvjz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2752 set thread context of 2708	2752	acvgnvjz.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2148	sc.exe
2744	sc.exe
2884	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	acvgnvjz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 1916	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	30
PID 2504 wrote to memory of 1916	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	30
PID 2504 wrote to memory of 1916	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	30
PID 2504 wrote to memory of 1916	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	30
PID 2504 wrote to memory of 2272	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	32
PID 2504 wrote to memory of 2272	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	32
PID 2504 wrote to memory of 2272	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	32
PID 2504 wrote to memory of 2272	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	32
PID 2504 wrote to memory of 2148	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	34
PID 2504 wrote to memory of 2148	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	34
PID 2504 wrote to memory of 2148	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	34
PID 2504 wrote to memory of 2148	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	34
PID 2504 wrote to memory of 2744	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	36
PID 2504 wrote to memory of 2744	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	36
PID 2504 wrote to memory of 2744	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	36
PID 2504 wrote to memory of 2744	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	36
PID 2504 wrote to memory of 2884	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	38
PID 2504 wrote to memory of 2884	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	38
PID 2504 wrote to memory of 2884	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	38
PID 2504 wrote to memory of 2884	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	38
PID 2752 wrote to memory of 2708	2752	acvgnvjz.exe	41
PID 2752 wrote to memory of 2708	2752	acvgnvjz.exe	41
PID 2752 wrote to memory of 2708	2752	acvgnvjz.exe	41
PID 2752 wrote to memory of 2708	2752	acvgnvjz.exe	41
PID 2752 wrote to memory of 2708	2752	acvgnvjz.exe	41
PID 2752 wrote to memory of 2708	2752	acvgnvjz.exe	41
PID 2504 wrote to memory of 2760	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	42
PID 2504 wrote to memory of 2760	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	42
PID 2504 wrote to memory of 2760	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	42
PID 2504 wrote to memory of 2760	2504	2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kbwtnbyi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\acvgnvjz.exe" C:\Windows\SysWOW64\kbwtnbyi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kbwtnbyi binPath= "C:\Windows\SysWOW64\kbwtnbyi\acvgnvjz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kbwtnbyi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kbwtnbyi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2884
- 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:2760

C:\Windows\SysWOW64\kbwtnbyi\acvgnvjz.exe
C:\Windows\SysWOW64\kbwtnbyi\acvgnvjz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_0db1476a4c3fee73d3836036a076bfdd_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2752
- 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:2708

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\acvgnvjz.exe

Filesize
10.1MB

MD5
20f4c60b3c1fb0e1f9fad2966df55dc4

SHA1
f6fa4f1678b1bb1bfe24ed92d5fef7a563e3e4a4

SHA256
30a597b80458e72117c5ab4faafabaaa5a9b5bd08333499172e4a04f81bfe818

SHA512
74dac796336c5aa8a5d371ea95a1c402e0083f9ae3f2e2eeac175d45f5320c5d2f7104cbf1dd0af2aeb115037d96afb4453b7c64fa843def9a6e59eb76abf221

Download Submit
memory/2504-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2504-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2504-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2504-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2504-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2504-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2708-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2708-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2708-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2708-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2708-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads