tofsee | 8f15e641dd8747b7efc05cc65a32f51a81948a810dc95a24e6bbe6452acbcc5e

Analysis

max time kernel
146s
max time network
145s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
18-10-2024 04:29

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General

Target

557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe
Size

11.3MB
MD5

557c4d35d2b818d536ec22bd4aa59bb4
SHA1

bb164d817d6e48b89babfac2df525cb1bcb8daa7
SHA256

8f15e641dd8747b7efc05cc65a32f51a81948a810dc95a24e6bbe6452acbcc5e
SHA512

0d7f7e5cecd8147da8d9da5d2ba1d3e5640cdbb66c5763ff167fab8d8193c59521e934839aee32d2f47248a629b0fede1cfc4f2c1247b384d8fae1b2fc62a5a9
SSDEEP

24576:qPTYeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeu:qP

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\lbpfvcfy = "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
2852	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\lbpfvcfy\ImagePath = "C:\\Windows\\SysWOW64\\lbpfvcfy\\pnxvvluk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2844	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2888	pnxvvluk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2888 set thread context of 2844	2888	pnxvvluk.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2704	sc.exe
2284	sc.exe
2768	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	cmd.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	pnxvvluk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2540	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	30
PID 2092 wrote to memory of 2540	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	30
PID 2092 wrote to memory of 2540	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	30
PID 2092 wrote to memory of 2540	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	30
PID 2092 wrote to memory of 2080	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	32
PID 2092 wrote to memory of 2080	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	32
PID 2092 wrote to memory of 2080	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	32
PID 2092 wrote to memory of 2080	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	32
PID 2092 wrote to memory of 2704	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	34
PID 2092 wrote to memory of 2704	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	34
PID 2092 wrote to memory of 2704	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	34
PID 2092 wrote to memory of 2704	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	34
PID 2092 wrote to memory of 2284	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	36
PID 2092 wrote to memory of 2284	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	36
PID 2092 wrote to memory of 2284	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	36
PID 2092 wrote to memory of 2284	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	36
PID 2092 wrote to memory of 2768	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	38
PID 2092 wrote to memory of 2768	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	38
PID 2092 wrote to memory of 2768	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	38
PID 2092 wrote to memory of 2768	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	38
PID 2092 wrote to memory of 2852	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	41
PID 2092 wrote to memory of 2852	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	41
PID 2092 wrote to memory of 2852	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	41
PID 2092 wrote to memory of 2852	2092	557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe	41
PID 2888 wrote to memory of 2844	2888	pnxvvluk.exe	43
PID 2888 wrote to memory of 2844	2888	pnxvvluk.exe	43
PID 2888 wrote to memory of 2844	2888	pnxvvluk.exe	43
PID 2888 wrote to memory of 2844	2888	pnxvvluk.exe	43
PID 2888 wrote to memory of 2844	2888	pnxvvluk.exe	43
PID 2888 wrote to memory of 2844	2888	pnxvvluk.exe	43

C:\Users\Admin\AppData\Local\Temp\557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lbpfvcfy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pnxvvluk.exe" C:\Windows\SysWOW64\lbpfvcfy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2080
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lbpfvcfy binPath= "C:\Windows\SysWOW64\lbpfvcfy\pnxvvluk.exe /d\"C:\Users\Admin\AppData\Local\Temp\557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lbpfvcfy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2284
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lbpfvcfy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2768
- 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:2852

C:\Windows\SysWOW64\lbpfvcfy\pnxvvluk.exe
C:\Windows\SysWOW64\lbpfvcfy\pnxvvluk.exe /d"C:\Users\Admin\AppData\Local\Temp\557c4d35d2b818d536ec22bd4aa59bb4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2888
- 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:2844

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\pnxvvluk.exe

Filesize
10.7MB

MD5
56c84d3f7bc0aca54bb487bf1b136e31

SHA1
8675af3a598d84e27ea6393dbf48f7b07b37211c

SHA256
d052e622e56df741bb13f424588d83ae1013ee0f8b8392fdf26733657f42c42b

SHA512
d44090779860ffb8099e0db5ff722a8b0c13d340d6c368b496d3a444826fd918f29d693092fa30f9306cb351128d10f24449a990c6a0d70d98a109807eba6216

Download Submit
memory/2092-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2092-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2092-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2092-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2092-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2092-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2844-11-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2844-14-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2844-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2844-17-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2844-16-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2844-18-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2888-15-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads