tofsee | 338f38a62bbe7ea0f03035bf9bd71e1edd504b46556fa3a620b1123dc330e663

Analysis

max time kernel
145s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/08/2024, 21:24

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General

Target
2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe
Size 13.8MB
Sample240809-z8z12azcmp
SHA256 338f38a62bbe7ea0f03035bf9bd71e1edd504b46556fa3a620b1123dc330e663
MD5 d676e54dfc6015bf44238f90c92c7bbd
SHA1 f14710585e6fcf5ab09cf9d9c4e910c0fca78560
SHA512 f2426826f9de60c102ac3db652350b100b8c66b12eb53fb643543ecd5776b6d5eb7a21ffdd8c55f564c93da8c4433729565bcbd9b15e5294ed39a94c63fade27
SSDEEP 6144:i+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:i+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

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
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
4596	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\psjmjstj\ImagePath = "C:\\Windows\\SysWOW64\\psjmjstj\\fwpszmyx.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe

Deletes itself 1 IoCs

pid	Process
1652	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1944	fwpszmyx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1944 set thread context of 1652	1944	fwpszmyx.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
1080	sc.exe
3812	sc.exe
440	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	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fwpszmyx.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 23 IoCs

description	pid	Process	procid_target
PID 4484 wrote to memory of 3040	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	88
PID 4484 wrote to memory of 3040	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	88
PID 4484 wrote to memory of 3040	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	88
PID 4484 wrote to memory of 4020	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	91
PID 4484 wrote to memory of 4020	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	91
PID 4484 wrote to memory of 4020	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	91
PID 4484 wrote to memory of 1080	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	93
PID 4484 wrote to memory of 1080	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	93
PID 4484 wrote to memory of 1080	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	93
PID 4484 wrote to memory of 3812	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	97
PID 4484 wrote to memory of 3812	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	97
PID 4484 wrote to memory of 3812	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	97
PID 4484 wrote to memory of 440	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	99
PID 4484 wrote to memory of 440	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	99
PID 4484 wrote to memory of 440	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	99
PID 4484 wrote to memory of 4596	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	103
PID 4484 wrote to memory of 4596	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	103
PID 4484 wrote to memory of 4596	4484	2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe	103
PID 1944 wrote to memory of 1652	1944	fwpszmyx.exe	106
PID 1944 wrote to memory of 1652	1944	fwpszmyx.exe	106
PID 1944 wrote to memory of 1652	1944	fwpszmyx.exe	106
PID 1944 wrote to memory of 1652	1944	fwpszmyx.exe	106
PID 1944 wrote to memory of 1652	1944	fwpszmyx.exe	106

C:\Users\Admin\AppData\Local\Temp\2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\psjmjstj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fwpszmyx.exe" C:\Windows\SysWOW64\psjmjstj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create psjmjstj binPath= "C:\Windows\SysWOW64\psjmjstj\fwpszmyx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1080
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description psjmjstj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start psjmjstj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:440
- 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:4596

C:\Windows\SysWOW64\psjmjstj\fwpszmyx.exe
C:\Windows\SysWOW64\psjmjstj\fwpszmyx.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-08-09_d676e54dfc6015bf44238f90c92c7bbd_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1652

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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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fwpszmyx.exe

Path C:\Users\Admin\AppData\Local\Temp\fwpszmyx.exe
Size 11.9MB
SHA256 167ab315cc8d1a16908208a61cb352b87dcbd85d7ec4188e7d3c5789f02fc780
MD5 4dbac7c86aa4fdc432ac24c43ded480c
SHA1 de038761af9a725437f1efe1b111fcd635ce27ea
SHA512 4ce8a883f65d5fb7fba5c7052948759a2d552eb7a714df669f8c26f69d5922c4facc69143063e30e9908dd877100f2c9e4fae9782f91a238b892db9edffde50b
SSDEEP 6144:D+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:D+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

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memory/1652-11-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/1652-14-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/1652-16-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/1944-9-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/1944-10-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/1944-15-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/4484-1-0x0000000000640000-0x0000000000740000-memory.dmp

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memory/4484-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4484-7-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4484-6-0x0000000000400000-0x000000000051A000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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