tofsee | 35fa3ce15cd57657d359dd7d5b0cc5fbb8f4447f8a6c2f116b5a1b86eda08519

General

Target

84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe
Size

11.4MB
MD5

84b615d0756f2dbbc12320ca3af1dbf0
SHA1

2dcf03c2002f5cfb8b6493b297e032fc522d2c40
SHA256

35fa3ce15cd57657d359dd7d5b0cc5fbb8f4447f8a6c2f116b5a1b86eda08519
SHA512

b4c28bd5b0387690fb328586230e002477a22e90676aa831588521d5e721c985e9aa37cb98feea4e3c70627d9376d8a30f126ba72a446e072b259062255bc26c
SSDEEP

196608:BmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmG:BmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmG

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\favnsztu = "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

Processes:

netsh.exe

pid process

2848 netsh.exe

pid	process
2848	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\favnsztu\ImagePath = "C:\\Windows\\SysWOW64\\favnsztu\\hfugawhx.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2896 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

hfugawhx.exe

pid process

2768 hfugawhx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

hfugawhx.exe

description pid process target process

PID 2768 set thread context of 2896 2768 hfugawhx.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2972 sc.exe
388 sc.exe
2872 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2896	svchost.exe

pid	process
2768	hfugawhx.exe

description	pid	process	target process
PID 2768 set thread context of 2896	2768	hfugawhx.exe	svchost.exe

pid	process
2972	sc.exe
388	sc.exe
2872	sc.exe

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

Processes:

netsh.exe

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

Processes:

84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.execmd.exesc.exehfugawhx.exesvchost.execmd.exesc.exesc.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	84b615d0756f2dbbc12320ca3af1dbf0_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	hfugawhx.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exehfugawhx.exe

description	pid	process	target process
PID 2112 wrote to memory of 696	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	cmd.exe
PID 2112 wrote to memory of 696	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	cmd.exe
PID 2112 wrote to memory of 696	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	cmd.exe
PID 2112 wrote to memory of 696	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	cmd.exe
PID 2112 wrote to memory of 2200	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	cmd.exe
PID 2112 wrote to memory of 2200	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	cmd.exe
PID 2112 wrote to memory of 2200	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	cmd.exe
PID 2112 wrote to memory of 2200	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	cmd.exe
PID 2112 wrote to memory of 2972	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 2972	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 2972	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 2972	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 388	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 388	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 388	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 388	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 2872	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 2872	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 2872	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 2872	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	sc.exe
PID 2112 wrote to memory of 2848	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	netsh.exe
PID 2112 wrote to memory of 2848	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	netsh.exe
PID 2112 wrote to memory of 2848	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	netsh.exe
PID 2112 wrote to memory of 2848	2112	84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe	netsh.exe
PID 2768 wrote to memory of 2896	2768	hfugawhx.exe	svchost.exe
PID 2768 wrote to memory of 2896	2768	hfugawhx.exe	svchost.exe
PID 2768 wrote to memory of 2896	2768	hfugawhx.exe	svchost.exe
PID 2768 wrote to memory of 2896	2768	hfugawhx.exe	svchost.exe
PID 2768 wrote to memory of 2896	2768	hfugawhx.exe	svchost.exe
PID 2768 wrote to memory of 2896	2768	hfugawhx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\favnsztu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hfugawhx.exe" C:\Windows\SysWOW64\favnsztu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2200
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create favnsztu binPath= "C:\Windows\SysWOW64\favnsztu\hfugawhx.exe /d\"C:\Users\Admin\AppData\Local\Temp\84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2972
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description favnsztu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start favnsztu
  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:2848

C:\Windows\SysWOW64\favnsztu\hfugawhx.exe
C:\Windows\SysWOW64\favnsztu\hfugawhx.exe /d"C:\Users\Admin\AppData\Local\Temp\84b615d0756f2dbbc12320ca3af1dbf0_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2768
- 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:2896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\hfugawhx.exe

Filesize
13.0MB

MD5
ac3be45316d43bc75526aa27f4ea349c

SHA1
778923852d7d9e59933656e7830485a31e1773bf

SHA256
4032eaa2decd64811f08291067dba0ccaf46ae1a05d891065036e2d62ae50b6d

SHA512
75918e68c59fcc5bacb257ef6ffe70f57f2e7257cd2ebe8646ee411f277fcabb38b4469011bb52d4603b5b988db46b23a938276a5bef39e57749275f9844aefc

Download Submit
memory/2112-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2112-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2112-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2112-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2112-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2112-1-0x00000000008C0000-0x00000000009C0000-memory.dmp

Filesize
1024KB

Download
memory/2768-17-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2896-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2896-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2896-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2896-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2896-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads