tofsee | a6f313cfcd3964b6f94c68783a1be75d85b28080b7cdc7a930acbe222573ff65

General

Target

2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe
Size

12.0MB
MD5

d466384f3c12b6a938536e4d09958985
SHA1

3587acbef84035751f5352a3d7578e6a95aed729
SHA256

a6f313cfcd3964b6f94c68783a1be75d85b28080b7cdc7a930acbe222573ff65
SHA512

e99798157fec46c5a4e00fea225d91c47cb5c422523a2b44a0c7a484de2744c6cd7a9505276a82247c343e4b4f3355ab74c3526648cd1b872b8d86c917d576b9
SSDEEP

3072:vLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:mOMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee defense_evasion discovery 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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2532	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\rqufrgk\ImagePath = "C:\\Windows\\SysWOW64\\rqufrgk\\nvkobzii.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-1-5-21-1412605595-2147700071-3468511006-1000\Control Panel\International\Geo\Nation	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe

Deletes itself 1 IoCs

pid	Process
4748	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4700	nvkobzii.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4700 set thread context of 4748	4700	nvkobzii.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
1912	sc.exe
1652	sc.exe
3824	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
1776	4796	WerFault.exe	82
4780	4700	WerFault.exe	96

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	nvkobzii.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_d466384f3c12b6a938536e4d09958985_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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4796 wrote to memory of 3992	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	86
PID 4796 wrote to memory of 3992	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	86
PID 4796 wrote to memory of 3992	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	86
PID 4796 wrote to memory of 4560	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	88
PID 4796 wrote to memory of 4560	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	88
PID 4796 wrote to memory of 4560	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	88
PID 4796 wrote to memory of 1912	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	90
PID 4796 wrote to memory of 1912	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	90
PID 4796 wrote to memory of 1912	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	90
PID 4796 wrote to memory of 1652	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	92
PID 4796 wrote to memory of 1652	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	92
PID 4796 wrote to memory of 1652	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	92
PID 4796 wrote to memory of 3824	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	94
PID 4796 wrote to memory of 3824	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	94
PID 4796 wrote to memory of 3824	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	94
PID 4796 wrote to memory of 2532	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	97
PID 4796 wrote to memory of 2532	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	97
PID 4796 wrote to memory of 2532	4796	2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe	97
PID 4700 wrote to memory of 4748	4700	nvkobzii.exe	103
PID 4700 wrote to memory of 4748	4700	nvkobzii.exe	103
PID 4700 wrote to memory of 4748	4700	nvkobzii.exe	103
PID 4700 wrote to memory of 4748	4700	nvkobzii.exe	103
PID 4700 wrote to memory of 4748	4700	nvkobzii.exe	103

C:\Users\Admin\AppData\Local\Temp\2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4796
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rqufrgk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nvkobzii.exe" C:\Windows\SysWOW64\rqufrgk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rqufrgk binPath= "C:\Windows\SysWOW64\rqufrgk\nvkobzii.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rqufrgk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rqufrgk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3824
- 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:2532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 1036
  2⤵
  - Program crash
  PID:1776

C:\Windows\SysWOW64\rqufrgk\nvkobzii.exe
C:\Windows\SysWOW64\rqufrgk\nvkobzii.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_d466384f3c12b6a938536e4d09958985_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4700
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 556
  2⤵
  - Program crash
  PID:4780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4796 -ip 4796
1⤵
PID:2956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4700 -ip 4700
1⤵
PID:3412

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\nvkobzii.exe

Filesize
13.6MB

MD5
4051db399b1be9f00cd4352c77ec6f90

SHA1
afae34337798293c08fdac58eab429954a7aaffc

SHA256
fced99ad41650a2c2082022ee8d555876c2285d9d6c3560194389e034d9060e5

SHA512
f75ff50e4887110e774de10ec13bd51b90224e6ddc33c03d3dfb9e9924ac6f07188afc659e388eaae3837e63c47f06634304143eafc4184e965b5a901145270b

Download Submit
memory/4700-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4700-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4700-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4700-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4748-14-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/4748-16-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/4748-17-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/4796-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4796-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4796-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4796-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4796-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4796-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads