tofsee | fbc03327661ed973c859257eb8ad4941108669c968de30a2ef77af775fe0e960

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-12-2024 19:58

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General

Target

de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe
Size

11.6MB
MD5

de5f0b876145c3072389c0af52539a06
SHA1

8fcb3d87bdb58c8f5eb5cd5d439fb08c88e19c23
SHA256

fbc03327661ed973c859257eb8ad4941108669c968de30a2ef77af775fe0e960
SHA512

858c78636b4c50791353b11df415e51bb8e3a2da4e2cda94ec2468a611db42ce30c3c3af3fa402825b2010eaad6f982088b293ddcc592726531933a4549092fc
SSDEEP

49152:L88888888888888888888888888888888888888888888888888888888888888T:

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\tjpvtapm = "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
2720	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\tjpvtapm\ImagePath = "C:\\Windows\\SysWOW64\\tjpvtapm\\bkwcmhdt.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
948	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2252	bkwcmhdt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2252 set thread context of 948	2252	bkwcmhdt.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2256	sc.exe
2728	sc.exe
2872	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bkwcmhdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	de5f0b876145c3072389c0af52539a06_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 1576	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	31
PID 2068 wrote to memory of 1576	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	31
PID 2068 wrote to memory of 1576	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	31
PID 2068 wrote to memory of 1576	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	31
PID 2068 wrote to memory of 2516	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	33
PID 2068 wrote to memory of 2516	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	33
PID 2068 wrote to memory of 2516	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	33
PID 2068 wrote to memory of 2516	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	33
PID 2068 wrote to memory of 2256	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	35
PID 2068 wrote to memory of 2256	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	35
PID 2068 wrote to memory of 2256	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	35
PID 2068 wrote to memory of 2256	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	35
PID 2068 wrote to memory of 2728	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	37
PID 2068 wrote to memory of 2728	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	37
PID 2068 wrote to memory of 2728	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	37
PID 2068 wrote to memory of 2728	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	37
PID 2068 wrote to memory of 2872	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	39
PID 2068 wrote to memory of 2872	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	39
PID 2068 wrote to memory of 2872	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	39
PID 2068 wrote to memory of 2872	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	39
PID 2068 wrote to memory of 2720	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	42
PID 2068 wrote to memory of 2720	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	42
PID 2068 wrote to memory of 2720	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	42
PID 2068 wrote to memory of 2720	2068	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	42
PID 2252 wrote to memory of 948	2252	bkwcmhdt.exe	44
PID 2252 wrote to memory of 948	2252	bkwcmhdt.exe	44
PID 2252 wrote to memory of 948	2252	bkwcmhdt.exe	44
PID 2252 wrote to memory of 948	2252	bkwcmhdt.exe	44
PID 2252 wrote to memory of 948	2252	bkwcmhdt.exe	44
PID 2252 wrote to memory of 948	2252	bkwcmhdt.exe	44

C:\Users\Admin\AppData\Local\Temp\de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tjpvtapm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bkwcmhdt.exe" C:\Windows\SysWOW64\tjpvtapm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tjpvtapm binPath= "C:\Windows\SysWOW64\tjpvtapm\bkwcmhdt.exe /d\"C:\Users\Admin\AppData\Local\Temp\de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tjpvtapm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tjpvtapm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2872
- 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:2720

C:\Windows\SysWOW64\tjpvtapm\bkwcmhdt.exe
C:\Windows\SysWOW64\tjpvtapm\bkwcmhdt.exe /d"C:\Users\Admin\AppData\Local\Temp\de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- 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:948

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\bkwcmhdt.exe

Filesize
11.1MB

MD5
4ab80ebe7dc4f116e971b57b7b6acc5a

SHA1
878043c9f66b7034ef29d3212bb4c2ecc9b986f0

SHA256
4eb640adc5528101f0d2a48d5d09612aa60cc06474012034fc42052ebc54fcd0

SHA512
d1c9e56768170aedc408d9d2b75527a6d8c3108c4b1a8cc4566324d6357ba5e3c2235e573324a9f9c05b71004a1cae115bcd806fb6e5c1e112828178fcedc4da

Download Submit
memory/948-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/948-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/948-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/948-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/948-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2068-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2068-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2068-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2068-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2068-8-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download
memory/2068-1-0x0000000002D90000-0x0000000002E90000-memory.dmp

Filesize
1024KB

Download
memory/2252-15-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads