tofsee | 56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 14:59

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General

Target

56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe
Size

13.9MB
MD5

ab0e948d4784415f90d8677e5f4c9d91
SHA1

812b1354f35ed90d60aaa8c562db4380919f12ab
SHA256

56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83
SHA512

a42433ffe7cfcef3c5e3db9981f93dbc1a2a7fd2269764128ac30b3750fc020249ca70a11c975c1f7cc373ab8fb032e96a5b2ae07d55edb95c841df4e740929d
SSDEEP

49152:1zPOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOX:1D

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

Processes:

svchost.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\nmjrwsth = "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

Processes:

netsh.exe

pid	Process
2052	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\nmjrwsth\ImagePath = "C:\\Windows\\SysWOW64\\nmjrwsth\\vwuehafq.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
2668	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

vwuehafq.exe

pid	Process
1780	vwuehafq.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

vwuehafq.exe

description	pid	Process	procid_target
PID 1780 set thread context of 2668	1780	vwuehafq.exe	43

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2724	sc.exe
2708	sc.exe
2896	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

Processes:

netsh.exe

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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

Processes:

sc.exevwuehafq.exesvchost.execmd.execmd.exesc.exe56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exesc.exenetsh.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vwuehafq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.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 30 IoCs

Processes:

56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exevwuehafq.exe

description	pid	Process	procid_target
PID 2876 wrote to memory of 2696	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	30
PID 2876 wrote to memory of 2696	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	30
PID 2876 wrote to memory of 2696	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	30
PID 2876 wrote to memory of 2696	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	30
PID 2876 wrote to memory of 2816	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	32
PID 2876 wrote to memory of 2816	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	32
PID 2876 wrote to memory of 2816	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	32
PID 2876 wrote to memory of 2816	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	32
PID 2876 wrote to memory of 2724	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	34
PID 2876 wrote to memory of 2724	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	34
PID 2876 wrote to memory of 2724	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	34
PID 2876 wrote to memory of 2724	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	34
PID 2876 wrote to memory of 2708	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	36
PID 2876 wrote to memory of 2708	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	36
PID 2876 wrote to memory of 2708	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	36
PID 2876 wrote to memory of 2708	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	36
PID 2876 wrote to memory of 2896	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	38
PID 2876 wrote to memory of 2896	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	38
PID 2876 wrote to memory of 2896	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	38
PID 2876 wrote to memory of 2896	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	38
PID 2876 wrote to memory of 2052	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	40
PID 2876 wrote to memory of 2052	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	40
PID 2876 wrote to memory of 2052	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	40
PID 2876 wrote to memory of 2052	2876	56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe	40
PID 1780 wrote to memory of 2668	1780	vwuehafq.exe	43
PID 1780 wrote to memory of 2668	1780	vwuehafq.exe	43
PID 1780 wrote to memory of 2668	1780	vwuehafq.exe	43
PID 1780 wrote to memory of 2668	1780	vwuehafq.exe	43
PID 1780 wrote to memory of 2668	1780	vwuehafq.exe	43
PID 1780 wrote to memory of 2668	1780	vwuehafq.exe	43

C:\Users\Admin\AppData\Local\Temp\56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe
"C:\Users\Admin\AppData\Local\Temp\56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nmjrwsth\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vwuehafq.exe" C:\Windows\SysWOW64\nmjrwsth\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nmjrwsth binPath= "C:\Windows\SysWOW64\nmjrwsth\vwuehafq.exe /d\"C:\Users\Admin\AppData\Local\Temp\56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nmjrwsth "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nmjrwsth
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- 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:2052

C:\Windows\SysWOW64\nmjrwsth\vwuehafq.exe
C:\Windows\SysWOW64\nmjrwsth\vwuehafq.exe /d"C:\Users\Admin\AppData\Local\Temp\56682ca9ad12536f6e53da6b2c02a72258996acd67b66ce1da12a16c694b2d83.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1780
- 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:2668

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\vwuehafq.exe

Filesize
14.6MB

MD5
aa6ff4b6594dad4e34593638304c5fc9

SHA1
d5ec78b76c41fa63fd3c00551bd6ce608408111e

SHA256
3d31d775b9a46315af54fdaa84fac35078fe06b483be5ce61d2c5358bae84c57

SHA512
4ee33188bffec013eb6b86ee82217b4b127b463e19ff2e771fef640689025265e74e7453b529b024ca6311c18321c58e654c6e50f8c113cee6a53544d7996121

Download Submit
memory/1780-15-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2668-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2668-11-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2668-14-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2668-17-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2668-18-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2876-4-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2876-8-0x0000000001760000-0x0000000001860000-memory.dmp

Filesize
1024KB

Download
memory/2876-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2876-6-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2876-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2876-1-0x0000000001760000-0x0000000001860000-memory.dmp

Filesize
1024KB

Download