tofsee | f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b

Analysis

max time kernel
59s
max time network
58s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 19:39

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General

Target

f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe
Size

10.5MB
MD5

b1a079f8d123d30d1596fe89a9d1192c
SHA1

e0f080d8e6dec62ad76c01ba9c575f7eae6c1e1b
SHA256

f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b
SHA512

1b1d1c5d05bf90331305c75a16d474771c5f46aae0d5236aa0428c08debc307db6c25a5c8008bad657a9358754cef7b1f78c4d09e6ffa0389714d673e1c00783
SSDEEP

6144:fZDhTWrhgUaxjFftGu35QZ+2PPFGrGuislc03r:fZDhTWrhgUWFfMuP0FGqb/0

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
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
2752	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\plngmdxg\ImagePath = "C:\\Windows\\SysWOW64\\plngmdxg\\wujvplwm.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2988	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2876	wujvplwm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2876 set thread context of 2988	2876	wujvplwm.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2864	sc.exe
2264	sc.exe
1852	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	wujvplwm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 2408	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	30
PID 2536 wrote to memory of 2408	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	30
PID 2536 wrote to memory of 2408	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	30
PID 2536 wrote to memory of 2408	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	30
PID 2536 wrote to memory of 1824	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	32
PID 2536 wrote to memory of 1824	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	32
PID 2536 wrote to memory of 1824	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	32
PID 2536 wrote to memory of 1824	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	32
PID 2536 wrote to memory of 2264	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	34
PID 2536 wrote to memory of 2264	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	34
PID 2536 wrote to memory of 2264	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	34
PID 2536 wrote to memory of 2264	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	34
PID 2536 wrote to memory of 1852	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	36
PID 2536 wrote to memory of 1852	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	36
PID 2536 wrote to memory of 1852	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	36
PID 2536 wrote to memory of 1852	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	36
PID 2536 wrote to memory of 2864	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	38
PID 2536 wrote to memory of 2864	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	38
PID 2536 wrote to memory of 2864	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	38
PID 2536 wrote to memory of 2864	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	38
PID 2536 wrote to memory of 2752	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	41
PID 2536 wrote to memory of 2752	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	41
PID 2536 wrote to memory of 2752	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	41
PID 2536 wrote to memory of 2752	2536	f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe	41
PID 2876 wrote to memory of 2988	2876	wujvplwm.exe	43
PID 2876 wrote to memory of 2988	2876	wujvplwm.exe	43
PID 2876 wrote to memory of 2988	2876	wujvplwm.exe	43
PID 2876 wrote to memory of 2988	2876	wujvplwm.exe	43
PID 2876 wrote to memory of 2988	2876	wujvplwm.exe	43
PID 2876 wrote to memory of 2988	2876	wujvplwm.exe	43

C:\Users\Admin\AppData\Local\Temp\f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe
"C:\Users\Admin\AppData\Local\Temp\f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\plngmdxg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2408
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wujvplwm.exe" C:\Windows\SysWOW64\plngmdxg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create plngmdxg binPath= "C:\Windows\SysWOW64\plngmdxg\wujvplwm.exe /d\"C:\Users\Admin\AppData\Local\Temp\f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description plngmdxg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start plngmdxg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2864
- 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:2752

C:\Windows\SysWOW64\plngmdxg\wujvplwm.exe
C:\Windows\SysWOW64\plngmdxg\wujvplwm.exe /d"C:\Users\Admin\AppData\Local\Temp\f5c15d971f2824020af57ff36b008cc53ed66317265d71cfca608b71c12ff20b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2988

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

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\wujvplwm.exe

Filesize
11.1MB

MD5
8d1a4b7a2319bde2e8c59e39c918604b

SHA1
d9c427b9fb262e47f893b6410497743f24dc68df

SHA256
e35db8a96b5aa82dc7cfd088c67e0aa5aa9b05c4bdee9ebab13cc8dd4c0a7b54

SHA512
9bc14e882e4e9d48c7113112d82cb634e9c1e91af121b52e84763ad09bcb560c24e687bf0b06242cff3a59fb04b6b2ff464571ec8a8e952ea3ae200ead67504c

Download Submit
memory/2536-8-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/2536-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2536-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2536-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2536-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2536-1-0x0000000000CE0000-0x0000000000DE0000-memory.dmp

Filesize
1024KB

Download
memory/2876-17-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/2988-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2988-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2988-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2988-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2988-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads