tofsee | 06b927367d5bf1c277b2981049ad14d06776b8f62f5a8d40725b1b7dc772ae00

General

Target

JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe
Size

14.2MB
MD5

0fdc3d3bfeda3f319fef0214c968163c
SHA1

4fcd45db3a6af2ddcbba28e7dc6125b6fa3341cc
SHA256

06b927367d5bf1c277b2981049ad14d06776b8f62f5a8d40725b1b7dc772ae00
SHA512

6f975308e718808155d4955eb692caaec22c0a534090e354340274bced010d60a049b296b17b12cb006e0c7d51b6a9002bdf9a2f602d60f7ca4a9213ce5bfd97
SSDEEP

98304:EUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU8:

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
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
2064	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\qknnwkxn\ImagePath = "C:\\Windows\\SysWOW64\\qknnwkxn\\eljuzuiw.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe

Deletes itself 1 IoCs

pid	Process
2564	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
956	eljuzuiw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 956 set thread context of 2564	956	eljuzuiw.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2540	sc.exe
3264	sc.exe
3424	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
3744	3024	WerFault.exe	81
224	956	WerFault.exe	92

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.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	eljuzuiw.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 1336	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	82
PID 3024 wrote to memory of 1336	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	82
PID 3024 wrote to memory of 1336	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	82
PID 3024 wrote to memory of 380	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	84
PID 3024 wrote to memory of 380	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	84
PID 3024 wrote to memory of 380	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	84
PID 3024 wrote to memory of 3264	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	86
PID 3024 wrote to memory of 3264	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	86
PID 3024 wrote to memory of 3264	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	86
PID 3024 wrote to memory of 3424	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	88
PID 3024 wrote to memory of 3424	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	88
PID 3024 wrote to memory of 3424	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	88
PID 3024 wrote to memory of 2540	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	90
PID 3024 wrote to memory of 2540	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	90
PID 3024 wrote to memory of 2540	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	90
PID 3024 wrote to memory of 2064	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	93
PID 3024 wrote to memory of 2064	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	93
PID 3024 wrote to memory of 2064	3024	JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe	93
PID 956 wrote to memory of 2564	956	eljuzuiw.exe	98
PID 956 wrote to memory of 2564	956	eljuzuiw.exe	98
PID 956 wrote to memory of 2564	956	eljuzuiw.exe	98
PID 956 wrote to memory of 2564	956	eljuzuiw.exe	98
PID 956 wrote to memory of 2564	956	eljuzuiw.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qknnwkxn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eljuzuiw.exe" C:\Windows\SysWOW64\qknnwkxn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qknnwkxn binPath= "C:\Windows\SysWOW64\qknnwkxn\eljuzuiw.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qknnwkxn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3424
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qknnwkxn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2540
- 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:2064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3024 -s 676
  2⤵
  - Program crash
  PID:3744

C:\Windows\SysWOW64\qknnwkxn\eljuzuiw.exe
C:\Windows\SysWOW64\qknnwkxn\eljuzuiw.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0fdc3d3bfeda3f319fef0214c968163c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:956
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 956 -s 520
  2⤵
  - Program crash
  PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3024 -ip 3024
1⤵
PID:1632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 956 -ip 956
1⤵
PID:3648

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\eljuzuiw.exe

Filesize
14.4MB

MD5
0e10adcfef3f7f5816818d1704e418c9

SHA1
8b4c74474a3b8c8a6bc4634c24278dba02abd62e

SHA256
dc6505d49754dcfc65093daf2f0f5a5c6588d35e0b3e1036973c2042fbf33c63

SHA512
e8e69f618571a8e720ccf53cd2fa40074d478cc42014fe5d2e45a31c58ff091299170bee38744da57583173b8a375e15a7eb43f58e0c3e6cdf0f16255300a5ae

Download Submit
memory/956-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/956-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/956-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/956-18-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2564-14-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/2564-16-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/2564-17-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/3024-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3024-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3024-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3024-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3024-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/3024-1-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads