tofsee | f49eff0c9a64e982b1eac981a010b608ca2ca902d5555206fe53b259c5979d33

Analysis

max time kernel
144s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-10-2024 11:38

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General

Target

620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe
Size

13.0MB
MD5

620a6aa248abe66526d392b56d679d58
SHA1

c3954ad0f42747c38404871941b5633373e0c55f
SHA256

f49eff0c9a64e982b1eac981a010b608ca2ca902d5555206fe53b259c5979d33
SHA512

b58aa0d57c417d7365abfa91935ff7a15d25e0b0f973c6f90e24f67067dfd94b1dfad0fea2cc8118223e2c8df1cb88eed479e273fcaa7ab8527bf283cc495471
SSDEEP

24576:AW/EClxN7llllllllllllllllllllllllllllllllllllllllllllllllllllll9:A4HN

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

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\xzkuwsbv = "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
2756	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\xzkuwsbv\ImagePath = "C:\\Windows\\SysWOW64\\xzkuwsbv\\oavszyym.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2904	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2272	oavszyym.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2272 set thread context of 2904	2272	oavszyym.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2808	sc.exe
2920	sc.exe
2180	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	620a6aa248abe66526d392b56d679d58_JaffaCakes118.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oavszyym.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 2372	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	30
PID 2104 wrote to memory of 2372	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	30
PID 2104 wrote to memory of 2372	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	30
PID 2104 wrote to memory of 2372	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	30
PID 2104 wrote to memory of 2100	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2100	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2100	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2100	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2180	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	34
PID 2104 wrote to memory of 2180	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	34
PID 2104 wrote to memory of 2180	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	34
PID 2104 wrote to memory of 2180	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	34
PID 2104 wrote to memory of 2808	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2808	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2808	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2808	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	36
PID 2104 wrote to memory of 2920	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	38
PID 2104 wrote to memory of 2920	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	38
PID 2104 wrote to memory of 2920	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	38
PID 2104 wrote to memory of 2920	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	38
PID 2104 wrote to memory of 2756	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	41
PID 2104 wrote to memory of 2756	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	41
PID 2104 wrote to memory of 2756	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	41
PID 2104 wrote to memory of 2756	2104	620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe	41
PID 2272 wrote to memory of 2904	2272	oavszyym.exe	43
PID 2272 wrote to memory of 2904	2272	oavszyym.exe	43
PID 2272 wrote to memory of 2904	2272	oavszyym.exe	43
PID 2272 wrote to memory of 2904	2272	oavszyym.exe	43
PID 2272 wrote to memory of 2904	2272	oavszyym.exe	43
PID 2272 wrote to memory of 2904	2272	oavszyym.exe	43

C:\Users\Admin\AppData\Local\Temp\620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xzkuwsbv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oavszyym.exe" C:\Windows\SysWOW64\xzkuwsbv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2100
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xzkuwsbv binPath= "C:\Windows\SysWOW64\xzkuwsbv\oavszyym.exe /d\"C:\Users\Admin\AppData\Local\Temp\620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2180
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xzkuwsbv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2808
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xzkuwsbv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2920
- 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:2756

C:\Windows\SysWOW64\xzkuwsbv\oavszyym.exe
C:\Windows\SysWOW64\xzkuwsbv\oavszyym.exe /d"C:\Users\Admin\AppData\Local\Temp\620a6aa248abe66526d392b56d679d58_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2272
- 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:2904

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\oavszyym.exe

Filesize
14.2MB

MD5
ffc03e5a236c9017d6866dadbdd1bdb0

SHA1
076cce6dd5ea98bb1bbc21280be47aa5aad0829f

SHA256
036e57851b2b1068ce726544039a699f748ccbeba8bb2bbdf909cfc6fb95bb3e

SHA512
5e2fa9d4ce5bc6e358eda911afa2dc3e54301ba9bf6aecc59161f707add76d19b9760be893a98e37ebd7e3b43987b4f9047ac5caea867783fdf3e7e0d89bd137

Download Submit
memory/2104-8-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2104-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2104-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/2104-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2104-9-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2104-2-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2272-15-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2904-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2904-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2904-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2904-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2904-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads