tofsee | b598f6bd5a40129cc3e11e473dc774d3ad4c5c0ae45850ae4b2a282de7051af3

Analysis

max time kernel
144s
max time network
119s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 18:28

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General

Target

2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe
Size

13.4MB
MD5

085c0df426a67559b07390c7e519fa04
SHA1

f7461925cf572b1a4e6185878699a1709d5afa90
SHA256

b598f6bd5a40129cc3e11e473dc774d3ad4c5c0ae45850ae4b2a282de7051af3
SHA512

52643632a7adecadcebeaf57e0334da1dc0a61aec3da1b8a95153b63e9edc49a86a3f341a16069e4e79d505f58876bcda9e722e30e4471ce96f2d48b93c67086
SSDEEP

3072:aLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:DOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\yocvpssr = "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
2896	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\yocvpssr\ImagePath = "C:\\Windows\\SysWOW64\\yocvpssr\\rdcqbltn.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2936	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	rdcqbltn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2812 set thread context of 2936	2812	rdcqbltn.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2948	sc.exe
2748	sc.exe
3060	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	netsh.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	rdcqbltn.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	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 2552	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	30
PID 2272 wrote to memory of 2552	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	30
PID 2272 wrote to memory of 2552	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	30
PID 2272 wrote to memory of 2552	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	30
PID 2272 wrote to memory of 2988	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	32
PID 2272 wrote to memory of 2988	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	32
PID 2272 wrote to memory of 2988	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	32
PID 2272 wrote to memory of 2988	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	32
PID 2272 wrote to memory of 2948	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	34
PID 2272 wrote to memory of 2948	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	34
PID 2272 wrote to memory of 2948	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	34
PID 2272 wrote to memory of 2948	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	34
PID 2272 wrote to memory of 2748	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	36
PID 2272 wrote to memory of 2748	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	36
PID 2272 wrote to memory of 2748	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	36
PID 2272 wrote to memory of 2748	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	36
PID 2272 wrote to memory of 3060	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	38
PID 2272 wrote to memory of 3060	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	38
PID 2272 wrote to memory of 3060	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	38
PID 2272 wrote to memory of 3060	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	38
PID 2812 wrote to memory of 2936	2812	rdcqbltn.exe	41
PID 2812 wrote to memory of 2936	2812	rdcqbltn.exe	41
PID 2812 wrote to memory of 2936	2812	rdcqbltn.exe	41
PID 2812 wrote to memory of 2936	2812	rdcqbltn.exe	41
PID 2812 wrote to memory of 2936	2812	rdcqbltn.exe	41
PID 2812 wrote to memory of 2936	2812	rdcqbltn.exe	41
PID 2272 wrote to memory of 2896	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	42
PID 2272 wrote to memory of 2896	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	42
PID 2272 wrote to memory of 2896	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	42
PID 2272 wrote to memory of 2896	2272	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yocvpssr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rdcqbltn.exe" C:\Windows\SysWOW64\yocvpssr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yocvpssr binPath= "C:\Windows\SysWOW64\yocvpssr\rdcqbltn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yocvpssr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yocvpssr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3060
- 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:2896

C:\Windows\SysWOW64\yocvpssr\rdcqbltn.exe
C:\Windows\SysWOW64\yocvpssr\rdcqbltn.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812
- 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:2936

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\rdcqbltn.exe

Filesize
11.3MB

MD5
5da0df8327e7cf84eb5aba600394dd82

SHA1
90a163e9a6a28a08c8bc5f62ae9ba05c78a86384

SHA256
b116904962ddca711df1c84007266090be490871033afcf2d28126ed86d7b34f

SHA512
e217b4b2d24dd985c3674ecf82a85d4659138283df0fe79253aeb51a7371a430f5f14cc61a384be3d0057069753812e2b573a86b9825f2f86b3125dba890f24f

Download Submit
memory/2272-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2272-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2272-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2272-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2272-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/2272-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2812-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2936-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2936-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2936-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2936-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2936-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads