tofsee | 551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 10:52

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General

Target

JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe
Size

197KB
MD5

d664f6cd5e19ce2644f2f7c37478a718
SHA1

868334830144813fd151a90b35d45d2c04f27069
SHA256

551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef
SHA512

42c48954963a502526e41adc43e5fb4c03996a333fb49fb401020f6834c3f7e8bf3bed5a4043e03d23cc25d6a8ba895083341b30252121cc3beb64cbaa104938
SSDEEP

3072:bnrGpXZ1ZzvsZQ7PTU/K5WHrcPI1Zed05x8EuSzsz:brGRZTsZWbozcPI17huSz+

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\vqvbrbwm = "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
2748	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\vqvbrbwm\ImagePath = "C:\\Windows\\SysWOW64\\vqvbrbwm\\yfighhxl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2676	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	yfighhxl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2696 set thread context of 2676	2696	yfighhxl.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2868	sc.exe
2976	sc.exe
2852	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_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.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	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	yfighhxl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 2952	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	29
PID 2604 wrote to memory of 2952	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	29
PID 2604 wrote to memory of 2952	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	29
PID 2604 wrote to memory of 2952	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	29
PID 2604 wrote to memory of 2348	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	31
PID 2604 wrote to memory of 2348	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	31
PID 2604 wrote to memory of 2348	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	31
PID 2604 wrote to memory of 2348	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	31
PID 2604 wrote to memory of 2868	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	33
PID 2604 wrote to memory of 2868	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	33
PID 2604 wrote to memory of 2868	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	33
PID 2604 wrote to memory of 2868	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	33
PID 2604 wrote to memory of 2976	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	35
PID 2604 wrote to memory of 2976	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	35
PID 2604 wrote to memory of 2976	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	35
PID 2604 wrote to memory of 2976	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	35
PID 2604 wrote to memory of 2852	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	37
PID 2604 wrote to memory of 2852	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	37
PID 2604 wrote to memory of 2852	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	37
PID 2604 wrote to memory of 2852	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	37
PID 2604 wrote to memory of 2748	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	40
PID 2604 wrote to memory of 2748	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	40
PID 2604 wrote to memory of 2748	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	40
PID 2604 wrote to memory of 2748	2604	JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe	40
PID 2696 wrote to memory of 2676	2696	yfighhxl.exe	42
PID 2696 wrote to memory of 2676	2696	yfighhxl.exe	42
PID 2696 wrote to memory of 2676	2696	yfighhxl.exe	42
PID 2696 wrote to memory of 2676	2696	yfighhxl.exe	42
PID 2696 wrote to memory of 2676	2696	yfighhxl.exe	42
PID 2696 wrote to memory of 2676	2696	yfighhxl.exe	42

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vqvbrbwm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yfighhxl.exe" C:\Windows\SysWOW64\vqvbrbwm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2348
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vqvbrbwm binPath= "C:\Windows\SysWOW64\vqvbrbwm\yfighhxl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vqvbrbwm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vqvbrbwm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- 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:2748

C:\Windows\SysWOW64\vqvbrbwm\yfighhxl.exe
C:\Windows\SysWOW64\vqvbrbwm\yfighhxl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_551ba3507f8cf7f20baa918bb6445fc67dc1e9980c521e7c8e4f3106b3f563ef.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696
- 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:2676

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\yfighhxl.exe

Filesize
13.7MB

MD5
6a6f7c2f33d84833c6187d33337b7547

SHA1
334c780b734d6949c72eec9bc35ad5edc721aab3

SHA256
f370d479d9190a858384f0b9b970bb0efeab832cbf29fe939de4311169e7b689

SHA512
048b434d340f5cdd0c3c8869b0001906763a4ca96f1222f9395035b8fb26e7f22f5e934aa541c61d875b91eba9a61de6ac630b845c350f0a4d63dec4de8577a6

Download Submit
memory/2604-1-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/2604-3-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2604-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2604-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2604-9-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/2676-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2676-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2676-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2676-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2676-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2696-17-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads