tofsee | 5797d32d2850b171e826581aa4989a07d52e4ca70a0c6ad972f9b439a286ef84

General

Target

JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe
Size

13.5MB
MD5

09395845799ba025e41cec464cc32ff3
SHA1

896bd88ed727c6c8a57ed59afcf6394f010a09db
SHA256

5797d32d2850b171e826581aa4989a07d52e4ca70a0c6ad972f9b439a286ef84
SHA512

051c12e89bc3d52fc4b8a0a661c2f93c3f1db73607bd24a362cede020bc5f9f0fd2152d4321225e0a843040b916f54ce8960ed12a2c7486f57bd3f2298053b2b
SSDEEP

6144:NpQ6t5O5aSeJhB5Cnyt+dg/KRJC8jbPzxRL2RjZyjSIQf4GF:Nm6+8Rhqnycdg/SljbbxRL+Z6Sr7F

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
652	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\gcrczehc\ImagePath = "C:\\Windows\\SysWOW64\\gcrczehc\\jcndolex.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe

Deletes itself 1 IoCs

pid	Process
4796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2756	jcndolex.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2756 set thread context of 4796	2756	jcndolex.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3052	sc.exe
2052	sc.exe
1580	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
3520	3764	WerFault.exe	82
4748	2756	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_09395845799ba025e41cec464cc32ff3.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	jcndolex.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3764 wrote to memory of 4172	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	83
PID 3764 wrote to memory of 4172	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	83
PID 3764 wrote to memory of 4172	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	83
PID 3764 wrote to memory of 4620	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	85
PID 3764 wrote to memory of 4620	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	85
PID 3764 wrote to memory of 4620	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	85
PID 3764 wrote to memory of 1580	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	88
PID 3764 wrote to memory of 1580	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	88
PID 3764 wrote to memory of 1580	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	88
PID 3764 wrote to memory of 3052	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	90
PID 3764 wrote to memory of 3052	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	90
PID 3764 wrote to memory of 3052	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	90
PID 3764 wrote to memory of 2052	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	92
PID 3764 wrote to memory of 2052	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	92
PID 3764 wrote to memory of 2052	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	92
PID 3764 wrote to memory of 652	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	95
PID 3764 wrote to memory of 652	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	95
PID 3764 wrote to memory of 652	3764	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	95
PID 2756 wrote to memory of 4796	2756	jcndolex.exe	101
PID 2756 wrote to memory of 4796	2756	jcndolex.exe	101
PID 2756 wrote to memory of 4796	2756	jcndolex.exe	101
PID 2756 wrote to memory of 4796	2756	jcndolex.exe	101
PID 2756 wrote to memory of 4796	2756	jcndolex.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gcrczehc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jcndolex.exe" C:\Windows\SysWOW64\gcrczehc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gcrczehc binPath= "C:\Windows\SysWOW64\gcrczehc\jcndolex.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gcrczehc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gcrczehc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2052
- 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:652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 1280
  2⤵
  - Program crash
  PID:3520

C:\Windows\SysWOW64\gcrczehc\jcndolex.exe
C:\Windows\SysWOW64\gcrczehc\jcndolex.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2756 -s 520
  2⤵
  - Program crash
  PID:4748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3764 -ip 3764
1⤵
PID:1896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2756 -ip 2756
1⤵
PID:3956

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\jcndolex.exe

Filesize
11.2MB

MD5
14e722f5302d9836af16e51109d1c539

SHA1
f5ebbf4e06cde67280e8f96d08c54039c0aa1268

SHA256
0b9679f93c91641a63011f7150e31aafdf03cbd04b91627e41cfe619bc62c462

SHA512
567381baaa913048fb2afcfcfc864867ce2a7d5ab61ddcb5feb9922252ffe355bbb5dbb7daae342691798c1ee673ddcfca653fc3dc9f14fd3da08fd1399d75fc

Download Submit
memory/2756-11-0x0000000000400000-0x0000000000788000-memory.dmp

Filesize
3.5MB

Download
memory/2756-17-0x0000000000400000-0x0000000000788000-memory.dmp

Filesize
3.5MB

Download
memory/3764-1-0x00000000009C0000-0x0000000000AC0000-memory.dmp

Filesize
1024KB

Download
memory/3764-2-0x0000000000810000-0x0000000000823000-memory.dmp

Filesize
76KB

Download
memory/3764-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3764-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3764-9-0x0000000000810000-0x0000000000823000-memory.dmp

Filesize
76KB

Download
memory/3764-8-0x0000000000400000-0x0000000000788000-memory.dmp

Filesize
3.5MB

Download
memory/4796-12-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download
memory/4796-15-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download
memory/4796-14-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads