tofsee | 94999d1dacca1ec7527f3aca2dc6d6650d71f32a10d141bda8e86d1680372d32

General

Target

JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe
Size

10.9MB
MD5

5b71eafbe78dfb0cfe34d51e78f4b646
SHA1

4704183ac76b4dfcf6cb8f7f17ec383846ac0b5b
SHA256

94999d1dacca1ec7527f3aca2dc6d6650d71f32a10d141bda8e86d1680372d32
SHA512

c676de991a00ea0c3279bc1a6cdd7a22f84f1ebdd94106b6eac535f1669faf268f291a77c05d814bc7555038f168c379c7c38b872b790b144b779dc643fdaf97
SSDEEP

98304:/C+PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:6

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
2880	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\ftlvdun\ImagePath = "C:\\Windows\\SysWOW64\\ftlvdun\\pwiversm.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe

Deletes itself 1 IoCs

pid	Process
4460	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
720	pwiversm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 720 set thread context of 4460	720	pwiversm.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3056	sc.exe
3020	sc.exe
4968	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pwiversm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 2604	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	83
PID 536 wrote to memory of 2604	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	83
PID 536 wrote to memory of 2604	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	83
PID 536 wrote to memory of 4884	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	85
PID 536 wrote to memory of 4884	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	85
PID 536 wrote to memory of 4884	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	85
PID 536 wrote to memory of 3056	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	88
PID 536 wrote to memory of 3056	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	88
PID 536 wrote to memory of 3056	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	88
PID 536 wrote to memory of 3020	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	92
PID 536 wrote to memory of 3020	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	92
PID 536 wrote to memory of 3020	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	92
PID 536 wrote to memory of 4968	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	94
PID 536 wrote to memory of 4968	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	94
PID 536 wrote to memory of 4968	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	94
PID 536 wrote to memory of 2880	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	100
PID 536 wrote to memory of 2880	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	100
PID 536 wrote to memory of 2880	536	JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe	100
PID 720 wrote to memory of 4460	720	pwiversm.exe	102
PID 720 wrote to memory of 4460	720	pwiversm.exe	102
PID 720 wrote to memory of 4460	720	pwiversm.exe	102
PID 720 wrote to memory of 4460	720	pwiversm.exe	102
PID 720 wrote to memory of 4460	720	pwiversm.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ftlvdun\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2604
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pwiversm.exe" C:\Windows\SysWOW64\ftlvdun\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ftlvdun binPath= "C:\Windows\SysWOW64\ftlvdun\pwiversm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ftlvdun "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ftlvdun
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4968
- 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:2880

C:\Windows\SysWOW64\ftlvdun\pwiversm.exe
C:\Windows\SysWOW64\ftlvdun\pwiversm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b71eafbe78dfb0cfe34d51e78f4b646.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:720
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4460

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\pwiversm.exe

Filesize
11.1MB

MD5
b6062d5e3b59c915e07663fe791a27ff

SHA1
a386a12ac2f807ee6ab0fb1738590f8b08442a01

SHA256
efa86b09c8a448ce92d49b4eb013e20de317d3038991079aeedd379d4dc10b26

SHA512
fd97404a9651e2668b14f2db8fb4725d8f615122bfa5e45a075c04cb63a9e24f8eab85cb772034abb928e2870d092bd9625221a8d69fb48efaaaf657129b686e

Download Submit
memory/536-9-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/536-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/536-2-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/536-8-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/536-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/536-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/720-12-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/720-11-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/720-13-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/720-18-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4460-16-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/4460-19-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/4460-14-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads