tofsee | 265ffea54849c994a104677a3cce912cbc979ebf58b98599b00da9e759dbed8a

General

Target

2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe
Size

12.2MB
MD5

84fe59d44f9a6e0942fda7bbbc3a5fe0
SHA1

39533cc2dca106d69a52b277f4e234a6ee16b6cf
SHA256

265ffea54849c994a104677a3cce912cbc979ebf58b98599b00da9e759dbed8a
SHA512

d83289f9f01524a2605cc9c5fdb1d6fb0dbece566604011126d15d56151ced23eef6463c7416e1d8705797a3b993ca816e0a2960d9929f2cbcda0f26f623c701
SSDEEP

3072:rLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:SOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
Tofsee family
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
1704	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\xelweekq\ImagePath = "C:\\Windows\\SysWOW64\\xelweekq\\vvwhcdbj.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe

Deletes itself 1 IoCs

pid	Process
5036	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
828	vvwhcdbj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 828 set thread context of 5036	828	vvwhcdbj.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
312	sc.exe
1344	sc.exe
1676	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1108	556	WerFault.exe	81
2056	828	WerFault.exe	92

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vvwhcdbj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 556 wrote to memory of 1256	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	82
PID 556 wrote to memory of 1256	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	82
PID 556 wrote to memory of 1256	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	82
PID 556 wrote to memory of 3660	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	84
PID 556 wrote to memory of 3660	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	84
PID 556 wrote to memory of 3660	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	84
PID 556 wrote to memory of 312	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	86
PID 556 wrote to memory of 312	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	86
PID 556 wrote to memory of 312	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	86
PID 556 wrote to memory of 1344	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	88
PID 556 wrote to memory of 1344	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	88
PID 556 wrote to memory of 1344	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	88
PID 556 wrote to memory of 1676	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	90
PID 556 wrote to memory of 1676	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	90
PID 556 wrote to memory of 1676	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	90
PID 556 wrote to memory of 1704	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	93
PID 556 wrote to memory of 1704	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	93
PID 556 wrote to memory of 1704	556	2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe	93
PID 828 wrote to memory of 5036	828	vvwhcdbj.exe	98
PID 828 wrote to memory of 5036	828	vvwhcdbj.exe	98
PID 828 wrote to memory of 5036	828	vvwhcdbj.exe	98
PID 828 wrote to memory of 5036	828	vvwhcdbj.exe	98
PID 828 wrote to memory of 5036	828	vvwhcdbj.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xelweekq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vvwhcdbj.exe" C:\Windows\SysWOW64\xelweekq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xelweekq binPath= "C:\Windows\SysWOW64\xelweekq\vvwhcdbj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xelweekq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xelweekq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1676
- 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:1704
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 556 -s 1152
  2⤵
  - Program crash
  PID:1108

C:\Windows\SysWOW64\xelweekq\vvwhcdbj.exe
C:\Windows\SysWOW64\xelweekq\vvwhcdbj.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-30_84fe59d44f9a6e0942fda7bbbc3a5fe0_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:828
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 828 -s 508
  2⤵
  - Program crash
  PID:2056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 556 -ip 556
1⤵
PID:4844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 828 -ip 828
1⤵
PID:1988

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\vvwhcdbj.exe

Filesize
11.8MB

MD5
039b592cb544529bc473c5cbb19434af

SHA1
9e3f40c58719a33624dff94df846011625d466c7

SHA256
e77ef0a04900a6e0bfe34b5452871ffdfa38cc59ca32fed1eb3350302b8ecc65

SHA512
821aab0ffaf92c8ec8f6fdc096ae3cf3b44d67b518e98e703fcb15e003b2831aa7995226d0450a19544b974f6a3c283c5c1dea25963032aacb873d42460e330d

Download Submit
memory/556-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/556-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/556-2-0x0000000000690000-0x00000000006A3000-memory.dmp

Filesize
76KB

Download
memory/556-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/556-8-0x0000000000690000-0x00000000006A3000-memory.dmp

Filesize
76KB

Download
memory/556-1-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/828-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/828-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/828-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/828-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5036-14-0x0000000000780000-0x0000000000795000-memory.dmp

Filesize
84KB

Download
memory/5036-16-0x0000000000780000-0x0000000000795000-memory.dmp

Filesize
84KB

Download
memory/5036-17-0x0000000000780000-0x0000000000795000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads