tofsee | 4ed3097a377f184052b6114bca7910b82483069cb44f41018effb35ed8a4982f

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 01:48

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General

Target

52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe
Size

12.1MB
MD5

0078e04b4b221dcf34b756a45a3908c0
SHA1

ee14854ccf6c55d5d4d84f124647c7af3b26385d
SHA256

52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756
SHA512

b4cab47c711425aca34c8a9eb3b46ebcbdc0849fc43c1ba592a254e6f7228db628d3587806c9937263178bf760374ed4c8a6e7285a645c21b7b8326c66b6b086
SSDEEP

98304:m66666666666666666666666666666666666666666666666666666666666666z:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

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\kqubmbud = "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
2588	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\kqubmbud\ImagePath = "C:\\Windows\\SysWOW64\\kqubmbud\\rhhhwntl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2624	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2860	rhhhwntl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2860 set thread context of 2624	2860	rhhhwntl.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2176	sc.exe
3016	sc.exe
2372	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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rhhhwntl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2596 wrote to memory of 2984	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	30
PID 2596 wrote to memory of 2984	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	30
PID 2596 wrote to memory of 2984	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	30
PID 2596 wrote to memory of 2984	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	30
PID 2596 wrote to memory of 2900	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	32
PID 2596 wrote to memory of 2900	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	32
PID 2596 wrote to memory of 2900	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	32
PID 2596 wrote to memory of 2900	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	32
PID 2596 wrote to memory of 3016	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	34
PID 2596 wrote to memory of 3016	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	34
PID 2596 wrote to memory of 3016	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	34
PID 2596 wrote to memory of 3016	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	34
PID 2596 wrote to memory of 2372	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	36
PID 2596 wrote to memory of 2372	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	36
PID 2596 wrote to memory of 2372	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	36
PID 2596 wrote to memory of 2372	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	36
PID 2596 wrote to memory of 2176	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	38
PID 2596 wrote to memory of 2176	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	38
PID 2596 wrote to memory of 2176	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	38
PID 2596 wrote to memory of 2176	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	38
PID 2596 wrote to memory of 2588	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	41
PID 2596 wrote to memory of 2588	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	41
PID 2596 wrote to memory of 2588	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	41
PID 2596 wrote to memory of 2588	2596	52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe	41
PID 2860 wrote to memory of 2624	2860	rhhhwntl.exe	43
PID 2860 wrote to memory of 2624	2860	rhhhwntl.exe	43
PID 2860 wrote to memory of 2624	2860	rhhhwntl.exe	43
PID 2860 wrote to memory of 2624	2860	rhhhwntl.exe	43
PID 2860 wrote to memory of 2624	2860	rhhhwntl.exe	43
PID 2860 wrote to memory of 2624	2860	rhhhwntl.exe	43

C:\Users\Admin\AppData\Local\Temp\52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe
"C:\Users\Admin\AppData\Local\Temp\52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kqubmbud\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rhhhwntl.exe" C:\Windows\SysWOW64\kqubmbud\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kqubmbud binPath= "C:\Windows\SysWOW64\kqubmbud\rhhhwntl.exe /d\"C:\Users\Admin\AppData\Local\Temp\52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kqubmbud "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kqubmbud
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2176
- 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:2588

C:\Windows\SysWOW64\kqubmbud\rhhhwntl.exe
C:\Windows\SysWOW64\kqubmbud\rhhhwntl.exe /d"C:\Users\Admin\AppData\Local\Temp\52a2fbd7660436a98e2201e0644c79a884c7e65d0aa9ae03e85dd712186b9756.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2860
- 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:2624

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\rhhhwntl.exe

Filesize
12.2MB

MD5
73611efc149014c994fedbdebd25fb36

SHA1
3b13c6f2fa9dbc51c546570e51bf3ba912b71d9f

SHA256
b49a0f70c825b7b3dec72b1205df3f32112e226003b365ce0e027e0c5a6600c4

SHA512
18229c238aea6e1c4f4cf17fbb4c3840508a4bbec80fa8b55b11157f8737a13c55cb6c70038559d809027870bdfdce69d795d4832a41e78d988077597bd07316

Download Submit
memory/2596-7-0x0000000000400000-0x0000000002B52000-memory.dmp

Filesize
39.3MB

Download
memory/2596-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2596-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2596-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2596-9-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2596-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2624-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2624-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2624-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2624-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2624-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2860-16-0x0000000000400000-0x0000000002B52000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads