tofsee | ab29fd907470b60139c37b93d086f0b520e4edcf0e485ab90358baee202ba190

General

Target

20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe
Size

15.0MB
MD5

cb445682e33a6b13091fb9d6a70c2120
SHA1

8ebeabd69b3c978b08d95fa81ecfdb17c8d3ce15
SHA256

ab29fd907470b60139c37b93d086f0b520e4edcf0e485ab90358baee202ba190
SHA512

420f357ea5e44deb176d70a69e5e4e2c96c5718742317572911aaa96d872e21f80dfd054c20e2c87ac11c6af99376f692c07678e6840604b9c28df04816a3556
SSDEEP

6144:j+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:j+r1IeSXMXc7LlxWV4Ug97GZ+ej

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
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

Processes:

netsh.exe

pid process

4536 netsh.exe

pid	process
4536	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\gxmdyiib\ImagePath = "C:\\Windows\\SysWOW64\\gxmdyiib\\bnoidzax.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4496 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

bnoidzax.exe

pid process

5024 bnoidzax.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bnoidzax.exe

description pid process target process

PID 5024 set thread context of 4496 5024 bnoidzax.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

4960 sc.exe
4556 sc.exe
4372 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4496	svchost.exe

pid	process
5024	bnoidzax.exe

description	pid	process	target process
PID 5024 set thread context of 4496	5024	bnoidzax.exe	svchost.exe

pid	process
4960	sc.exe
4556	sc.exe
4372	sc.exe

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

Processes:

netsh.exe

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

Processes:

20240921cb445682e33a6b13091fb9d6a70c2120mafia.execmd.exesc.execmd.exesc.exesc.exebnoidzax.exenetsh.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240921cb445682e33a6b13091fb9d6a70c2120mafia.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	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	bnoidzax.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 23 IoCs

Processes:

20240921cb445682e33a6b13091fb9d6a70c2120mafia.exebnoidzax.exe

description	pid	process	target process
PID 3008 wrote to memory of 2820	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	cmd.exe
PID 3008 wrote to memory of 2820	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	cmd.exe
PID 3008 wrote to memory of 2820	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	cmd.exe
PID 3008 wrote to memory of 1776	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	cmd.exe
PID 3008 wrote to memory of 1776	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	cmd.exe
PID 3008 wrote to memory of 1776	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	cmd.exe
PID 3008 wrote to memory of 4960	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	sc.exe
PID 3008 wrote to memory of 4960	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	sc.exe
PID 3008 wrote to memory of 4960	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	sc.exe
PID 3008 wrote to memory of 4556	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	sc.exe
PID 3008 wrote to memory of 4556	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	sc.exe
PID 3008 wrote to memory of 4556	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	sc.exe
PID 3008 wrote to memory of 4372	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	sc.exe
PID 3008 wrote to memory of 4372	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	sc.exe
PID 3008 wrote to memory of 4372	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	sc.exe
PID 3008 wrote to memory of 4536	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	netsh.exe
PID 3008 wrote to memory of 4536	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	netsh.exe
PID 3008 wrote to memory of 4536	3008	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	netsh.exe
PID 5024 wrote to memory of 4496	5024	bnoidzax.exe	svchost.exe
PID 5024 wrote to memory of 4496	5024	bnoidzax.exe	svchost.exe
PID 5024 wrote to memory of 4496	5024	bnoidzax.exe	svchost.exe
PID 5024 wrote to memory of 4496	5024	bnoidzax.exe	svchost.exe
PID 5024 wrote to memory of 4496	5024	bnoidzax.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe
"C:\Users\Admin\AppData\Local\Temp\20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3008

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gxmdyiib\
2⤵
- System Location Discovery: System Language Discovery
PID:2820

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bnoidzax.exe" C:\Windows\SysWOW64\gxmdyiib\
2⤵
- System Location Discovery: System Language Discovery
PID:1776

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create gxmdyiib binPath= "C:\Windows\SysWOW64\gxmdyiib\bnoidzax.exe /d\"C:\Users\Admin\AppData\Local\Temp\20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4960

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description gxmdyiib "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4556

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start gxmdyiib
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4372

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:4536

C:\Windows\SysWOW64\gxmdyiib\bnoidzax.exe
C:\Windows\SysWOW64\gxmdyiib\bnoidzax.exe /d"C:\Users\Admin\AppData\Local\Temp\20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5024

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:4496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\bnoidzax.exe

Filesize
13.6MB

MD5
4f01d55cdfef16d3ee9d6f2b7685e5d0

SHA1
f5acec53c35131683e28762bd5bcb48762e57701

SHA256
fafeff4c73bb887478087a48d66a8221809e5cd4dc643e92397a3fa00fe6036a

SHA512
769f8136bfa77baf50ed7c5ea301dcc026b1a5609588de1968a69a63d04fa6795f1e11ca339bdc39572a51e410538d706dde7793e2b4a62afe33e9af370c0b5d

Download Submit
memory/3008-1-0x00000000007F0000-0x00000000008F0000-memory.dmp

Filesize
1024KB

Download
memory/3008-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3008-6-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/3008-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4496-16-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/4496-15-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/4496-10-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/4496-17-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/4496-18-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/5024-9-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/5024-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads