tofsee | 8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-11-2024 06:08

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe
Size

13.9MB
MD5

79dc2160ea73f5a008c5a7b25fb1f1ec
SHA1

329fd850c1dd7541b67ff9b76d532645549a69e0
SHA256

8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61
SHA512

02554429e5526535d1e82feb39b24f88a4bd068355a46efe3b335a57bd417276d4ae8d976a28bb26913c37d55ccb90898c0b115057d1e3924eb795b76db3bb6e
SSDEEP

49152:2yzapZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZy:2CF

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.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\wvpmazso = "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
2224	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\wvpmazso\ImagePath = "C:\\Windows\\SysWOW64\\wvpmazso\\xcmcqv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2632	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2748	xcmcqv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 2632	2748	xcmcqv.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2348	sc.exe
2760	sc.exe
2848	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 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

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xcmcqv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 1248	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	30
PID 2528 wrote to memory of 1248	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	30
PID 2528 wrote to memory of 1248	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	30
PID 2528 wrote to memory of 1248	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	30
PID 2528 wrote to memory of 3032	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	32
PID 2528 wrote to memory of 3032	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	32
PID 2528 wrote to memory of 3032	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	32
PID 2528 wrote to memory of 3032	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	32
PID 2528 wrote to memory of 2348	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	34
PID 2528 wrote to memory of 2348	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	34
PID 2528 wrote to memory of 2348	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	34
PID 2528 wrote to memory of 2348	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	34
PID 2528 wrote to memory of 2760	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	36
PID 2528 wrote to memory of 2760	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	36
PID 2528 wrote to memory of 2760	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	36
PID 2528 wrote to memory of 2760	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	36
PID 2528 wrote to memory of 2848	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	38
PID 2528 wrote to memory of 2848	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	38
PID 2528 wrote to memory of 2848	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	38
PID 2528 wrote to memory of 2848	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	38
PID 2528 wrote to memory of 2224	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	41
PID 2528 wrote to memory of 2224	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	41
PID 2528 wrote to memory of 2224	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	41
PID 2528 wrote to memory of 2224	2528	8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe	41
PID 2748 wrote to memory of 2632	2748	xcmcqv.exe	43
PID 2748 wrote to memory of 2632	2748	xcmcqv.exe	43
PID 2748 wrote to memory of 2632	2748	xcmcqv.exe	43
PID 2748 wrote to memory of 2632	2748	xcmcqv.exe	43
PID 2748 wrote to memory of 2632	2748	xcmcqv.exe	43
PID 2748 wrote to memory of 2632	2748	xcmcqv.exe	43

C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe
"C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wvpmazso\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xcmcqv.exe" C:\Windows\SysWOW64\wvpmazso\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3032
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wvpmazso binPath= "C:\Windows\SysWOW64\wvpmazso\xcmcqv.exe /d\"C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2348
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wvpmazso "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wvpmazso
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- 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:2224

C:\Windows\SysWOW64\wvpmazso\xcmcqv.exe
C:\Windows\SysWOW64\wvpmazso\xcmcqv.exe /d"C:\Users\Admin\AppData\Local\Temp\8fcd431b3939e62180adfe1473fbd7bd18afd42145d85c2c7b9c68c0262dcd61.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748
- 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:2632

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
14.4MB

MD5
b45db47ca7eba531fa0f85f2963918c6

SHA1
722a4f25e0d349ae51d94d46c209c6c6fee4a6ad

SHA256
ac16f4e6c11ed47c7a456bc8cdf8e493e77058f0a8da05823fe5fb16873bb664

SHA512
efc0cf372f71c2a48aeb46116a436c09b5d73e79155c59ba3290ec84f9300b18498676d6d0a9d180cc2f55a0a23b42065b0545747bbaa4b6bd0421d81145af94

Download Submit
memory/2528-1-0x0000000001740000-0x0000000001840000-memory.dmp

Filesize
1024KB

Download
memory/2528-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2528-4-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/2528-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2528-9-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/2632-11-0x00000000000F0000-0x0000000000105000-memory.dmp

Filesize
84KB

Download
memory/2632-16-0x00000000000F0000-0x0000000000105000-memory.dmp

Filesize
84KB

Download
memory/2632-14-0x00000000000F0000-0x0000000000105000-memory.dmp

Filesize
84KB

Download
memory/2632-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2632-18-0x00000000000F0000-0x0000000000105000-memory.dmp

Filesize
84KB

Download
memory/2748-17-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads