tofsee | 1e53a862c089511f03f1573b403ac36ae35eee9d524cf5678386cc108c803737

General

Target

JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe
Size

12.4MB
MD5

8494dbde93c6140cf6d958e1b8b3824c
SHA1

2c4786f4c80390611c4f9ed751df12db7fa032a5
SHA256

1e53a862c089511f03f1573b403ac36ae35eee9d524cf5678386cc108c803737
SHA512

1b310563820de10be38d2612169114e0ce3456f191341011a5a63221b1118995412281542bee60f708be971c75401178f5f8c600eba5cf7438993e61efc6229d
SSDEEP

196608:txxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxH:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
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
1740	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\hhgpdcez\ImagePath = "C:\\Windows\\SysWOW64\\hhgpdcez\\fytfjyj.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe

Deletes itself 1 IoCs

pid	Process
2376	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
392	fytfjyj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 392 set thread context of 2376	392	fytfjyj.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2812	sc.exe
2512	sc.exe
2620	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3184	3636	WerFault.exe	83
184	392	WerFault.exe	94

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.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	fytfjyj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3636 wrote to memory of 1872	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	84
PID 3636 wrote to memory of 1872	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	84
PID 3636 wrote to memory of 1872	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	84
PID 3636 wrote to memory of 3276	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	86
PID 3636 wrote to memory of 3276	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	86
PID 3636 wrote to memory of 3276	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	86
PID 3636 wrote to memory of 2512	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	88
PID 3636 wrote to memory of 2512	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	88
PID 3636 wrote to memory of 2512	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	88
PID 3636 wrote to memory of 2620	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	90
PID 3636 wrote to memory of 2620	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	90
PID 3636 wrote to memory of 2620	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	90
PID 3636 wrote to memory of 2812	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	92
PID 3636 wrote to memory of 2812	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	92
PID 3636 wrote to memory of 2812	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	92
PID 3636 wrote to memory of 1740	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	95
PID 3636 wrote to memory of 1740	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	95
PID 3636 wrote to memory of 1740	3636	JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe	95
PID 392 wrote to memory of 2376	392	fytfjyj.exe	100
PID 392 wrote to memory of 2376	392	fytfjyj.exe	100
PID 392 wrote to memory of 2376	392	fytfjyj.exe	100
PID 392 wrote to memory of 2376	392	fytfjyj.exe	100
PID 392 wrote to memory of 2376	392	fytfjyj.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hhgpdcez\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fytfjyj.exe" C:\Windows\SysWOW64\hhgpdcez\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3276
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hhgpdcez binPath= "C:\Windows\SysWOW64\hhgpdcez\fytfjyj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2512
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hhgpdcez "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hhgpdcez
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2812
- 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:1740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 1184
  2⤵
  - Program crash
  PID:3184

C:\Windows\SysWOW64\hhgpdcez\fytfjyj.exe
C:\Windows\SysWOW64\hhgpdcez\fytfjyj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8494dbde93c6140cf6d958e1b8b3824c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:392
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 392 -s 516
  2⤵
  - Program crash
  PID:184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3636 -ip 3636
1⤵
PID:3932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 392 -ip 392
1⤵
PID:324

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

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\fytfjyj.exe

Filesize
13.7MB

MD5
dcb1774d5480720b8214c7ee17012c6a

SHA1
62cf6568b4d1b550cc8421d72ce85e161bb487cc

SHA256
7c1a75cd3c84b4dc3bc4bcc6e8cfd3a439e979f3a5c853124a12c1551158a8f1

SHA512
ed9184c187247dacdad218705e4288455a093b0e2be3887950cd84a6b6e0d969225195e29da67546e7da6eaae40dd508f060e5d0a81d1d21e8f8700f3109295e

Download Submit
memory/392-14-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download
memory/2376-10-0x00000000006B0000-0x00000000006C5000-memory.dmp

Filesize
84KB

Download
memory/2376-12-0x00000000006B0000-0x00000000006C5000-memory.dmp

Filesize
84KB

Download
memory/2376-13-0x00000000006B0000-0x00000000006C5000-memory.dmp

Filesize
84KB

Download
memory/3636-0-0x0000000004C50000-0x0000000004C5D000-memory.dmp

Filesize
52KB

Download
memory/3636-1-0x0000000004C60000-0x0000000004C73000-memory.dmp

Filesize
76KB

Download
memory/3636-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3636-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3636-8-0x0000000004C60000-0x0000000004C73000-memory.dmp

Filesize
76KB

Download
memory/3636-7-0x0000000004C50000-0x0000000004C5D000-memory.dmp

Filesize
52KB

Download
memory/3636-6-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads