tofsee | f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87

Analysis

max time kernel
145s
max time network
146s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 15:19

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General

Target

JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe
Size

300KB
MD5

604765a96ab3f9265808926f38ebdd83
SHA1

7e5bbe686a922f9cd9cd5288676e332cc9d0f201
SHA256

f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87
SHA512

12497ef1c6134b135f0fe2073f1738229dc8d56eda9b5c3489514305773339e18806b5174a0b5c4cf8ee43df5c6cf00f4a19ee58829163af59c3c1afcdc26668
SSDEEP

6144:wZTYSSgfeAkpENPp0RnjB9/XK50ppPQiMjQ+T95:wVYSS2kyp0RnHK50bPQHQ+x

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

patmushta.info

parubey.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\oynvwhlc = "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
2800	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\oynvwhlc\ImagePath = "C:\\Windows\\SysWOW64\\oynvwhlc\\kecwxmuj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2656	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2660	kecwxmuj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2660 set thread context of 2656	2660	kecwxmuj.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2836	sc.exe
2496	sc.exe
2672	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	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kecwxmuj.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 2508	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	30
PID 2520 wrote to memory of 2508	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	30
PID 2520 wrote to memory of 2508	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	30
PID 2520 wrote to memory of 2508	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	30
PID 2520 wrote to memory of 2832	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	32
PID 2520 wrote to memory of 2832	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	32
PID 2520 wrote to memory of 2832	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	32
PID 2520 wrote to memory of 2832	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	32
PID 2520 wrote to memory of 2836	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	34
PID 2520 wrote to memory of 2836	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	34
PID 2520 wrote to memory of 2836	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	34
PID 2520 wrote to memory of 2836	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	34
PID 2520 wrote to memory of 2496	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	36
PID 2520 wrote to memory of 2496	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	36
PID 2520 wrote to memory of 2496	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	36
PID 2520 wrote to memory of 2496	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	36
PID 2520 wrote to memory of 2672	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	38
PID 2520 wrote to memory of 2672	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	38
PID 2520 wrote to memory of 2672	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	38
PID 2520 wrote to memory of 2672	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	38
PID 2520 wrote to memory of 2800	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	41
PID 2520 wrote to memory of 2800	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	41
PID 2520 wrote to memory of 2800	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	41
PID 2520 wrote to memory of 2800	2520	JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe	41
PID 2660 wrote to memory of 2656	2660	kecwxmuj.exe	43
PID 2660 wrote to memory of 2656	2660	kecwxmuj.exe	43
PID 2660 wrote to memory of 2656	2660	kecwxmuj.exe	43
PID 2660 wrote to memory of 2656	2660	kecwxmuj.exe	43
PID 2660 wrote to memory of 2656	2660	kecwxmuj.exe	43
PID 2660 wrote to memory of 2656	2660	kecwxmuj.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oynvwhlc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kecwxmuj.exe" C:\Windows\SysWOW64\oynvwhlc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oynvwhlc binPath= "C:\Windows\SysWOW64\oynvwhlc\kecwxmuj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oynvwhlc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oynvwhlc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2672
- 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:2800

C:\Windows\SysWOW64\oynvwhlc\kecwxmuj.exe
C:\Windows\SysWOW64\oynvwhlc\kecwxmuj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f9de99091686d9eef552541313e7b4b987819f3d6cd4ee2c7144d49dbaa15c87.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- 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:2656

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\kecwxmuj.exe

Filesize
14.8MB

MD5
5d519ffb520eb2c1c7aabac8ae7f0ded

SHA1
9b4099530cd4152c8fbc60067b9bc5324f0a6fc1

SHA256
6ce7cffc23a857f16fbc82473c1dc6889fcffaa4d55be436e10286058b96e3d1

SHA512
fda448ed75e4c3953ac9285ce1b3e7e31a8784063a0ce5c0f298ee0e2d3a81ada367b5345e314b6ec0df35ce33638804dfaad98037f97de8599effea6f7ddbb6

Download Submit
memory/2520-7-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2520-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2520-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2520-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2656-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2656-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2656-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2656-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2656-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2660-16-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads