tofsee | b6b4a2a942787dda37de9baf09836fcd64c6ba4c3b92485a67ca0f9cf1faae76

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-01-2025 12:06

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General

Target

JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe
Size

14.0MB
MD5

6c7fa58edfd1ff3d11a3621ade79d6ba
SHA1

682254418cb703bdfdab522a6178faf83234b9c3
SHA256

b6b4a2a942787dda37de9baf09836fcd64c6ba4c3b92485a67ca0f9cf1faae76
SHA512

117632a0e95d4d27693f6add98811955603e16d4d8d8b679a65ff9823bbd7a5344600a029a632d54671fd19aa659eb4c996662e6972e476c538fc0269f3dff92
SSDEEP

98304:dvCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCr:d

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\punvzyfn = "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
2548	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\punvzyfn\ImagePath = "C:\\Windows\\SysWOW64\\punvzyfn\\mtfsbopj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2532	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2644	mtfsbopj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2644 set thread context of 2532	2644	mtfsbopj.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2536	sc.exe
2572	sc.exe
2600	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mtfsbopj.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	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2812 wrote to memory of 1308	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	29
PID 2812 wrote to memory of 1308	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	29
PID 2812 wrote to memory of 1308	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	29
PID 2812 wrote to memory of 1308	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	29
PID 2812 wrote to memory of 2680	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	31
PID 2812 wrote to memory of 2680	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	31
PID 2812 wrote to memory of 2680	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	31
PID 2812 wrote to memory of 2680	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	31
PID 2812 wrote to memory of 2536	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	33
PID 2812 wrote to memory of 2536	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	33
PID 2812 wrote to memory of 2536	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	33
PID 2812 wrote to memory of 2536	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	33
PID 2812 wrote to memory of 2572	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	35
PID 2812 wrote to memory of 2572	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	35
PID 2812 wrote to memory of 2572	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	35
PID 2812 wrote to memory of 2572	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	35
PID 2812 wrote to memory of 2600	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	37
PID 2812 wrote to memory of 2600	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	37
PID 2812 wrote to memory of 2600	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	37
PID 2812 wrote to memory of 2600	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	37
PID 2812 wrote to memory of 2548	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	40
PID 2812 wrote to memory of 2548	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	40
PID 2812 wrote to memory of 2548	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	40
PID 2812 wrote to memory of 2548	2812	JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe	40
PID 2644 wrote to memory of 2532	2644	mtfsbopj.exe	42
PID 2644 wrote to memory of 2532	2644	mtfsbopj.exe	42
PID 2644 wrote to memory of 2532	2644	mtfsbopj.exe	42
PID 2644 wrote to memory of 2532	2644	mtfsbopj.exe	42
PID 2644 wrote to memory of 2532	2644	mtfsbopj.exe	42
PID 2644 wrote to memory of 2532	2644	mtfsbopj.exe	42

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\punvzyfn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mtfsbopj.exe" C:\Windows\SysWOW64\punvzyfn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create punvzyfn binPath= "C:\Windows\SysWOW64\punvzyfn\mtfsbopj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description punvzyfn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start punvzyfn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2600
- 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:2548

C:\Windows\SysWOW64\punvzyfn\mtfsbopj.exe
C:\Windows\SysWOW64\punvzyfn\mtfsbopj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c7fa58edfd1ff3d11a3621ade79d6ba.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2644
- 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:2532

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\mtfsbopj.exe

Filesize
10.8MB

MD5
ae37d55a93ff7f2a1a484cd8bb77f095

SHA1
76bdbf14b064adc3d2c69db633b10e52cc9e2881

SHA256
56d1a10dd5af748dc9bf55ccfecb9ac871731cb2e95d39642d3408858bbe0315

SHA512
af002df5ecc6f49f7979a211e8a012b6b8f7813ac7ab0a8a5b6e96be55b487e94eabcc2f5e155f09faa47d262dbf6ecf6c1a29bd14f660926d0e287c26688dd0

Download Submit
memory/2532-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2532-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2532-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2532-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2532-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2644-17-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2812-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2812-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2812-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2812-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2812-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2812-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads