tofsee | 72eabb98b030c60e324f6234552c30a1e5732ff719add8b1108ebc7715d1784f

General

Target

603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe
Size

239KB
MD5

603b77f0ac8874df7836569314c53bc4
SHA1

a602ae142dee77dfef51a47c1cf5eafe040198bd
SHA256

72eabb98b030c60e324f6234552c30a1e5732ff719add8b1108ebc7715d1784f
SHA512

ef87dc2390def2f156490712f596b3f1f4016a7e59a4a3e8e9c1ade04caaaff6f2ab2648993d3de5bf740513317e6b4219b4c3acd5f49d42b42e2ad02ea6e255
SSDEEP

3072:EMvoJ8oyOUQmaEa1otqKjHJSQEb/PUNnrU0vyHeN2hFRsGcPEH/UnpkWxeVxENO:EMvw8F3QDEFgIpb8U92ebznbxe4

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
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
2184	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\mjduaezf\ImagePath = "C:\\Windows\\SysWOW64\\mjduaezf\\rdyvcbbp.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3608	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4360	rdyvcbbp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4360 set thread context of 3608	4360	rdyvcbbp.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3480	sc.exe
2984	sc.exe
2548	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rdyvcbbp.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 1908	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	87
PID 1684 wrote to memory of 1908	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	87
PID 1684 wrote to memory of 1908	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	87
PID 1684 wrote to memory of 1640	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	89
PID 1684 wrote to memory of 1640	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	89
PID 1684 wrote to memory of 1640	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	89
PID 1684 wrote to memory of 3480	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	91
PID 1684 wrote to memory of 3480	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	91
PID 1684 wrote to memory of 3480	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	91
PID 1684 wrote to memory of 2984	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	93
PID 1684 wrote to memory of 2984	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	93
PID 1684 wrote to memory of 2984	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	93
PID 1684 wrote to memory of 2548	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	95
PID 1684 wrote to memory of 2548	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	95
PID 1684 wrote to memory of 2548	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	95
PID 1684 wrote to memory of 2184	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	98
PID 1684 wrote to memory of 2184	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	98
PID 1684 wrote to memory of 2184	1684	603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe	98
PID 4360 wrote to memory of 3608	4360	rdyvcbbp.exe	102
PID 4360 wrote to memory of 3608	4360	rdyvcbbp.exe	102
PID 4360 wrote to memory of 3608	4360	rdyvcbbp.exe	102
PID 4360 wrote to memory of 3608	4360	rdyvcbbp.exe	102
PID 4360 wrote to memory of 3608	4360	rdyvcbbp.exe	102

C:\Users\Admin\AppData\Local\Temp\603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mjduaezf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1908
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rdyvcbbp.exe" C:\Windows\SysWOW64\mjduaezf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mjduaezf binPath= "C:\Windows\SysWOW64\mjduaezf\rdyvcbbp.exe /d\"C:\Users\Admin\AppData\Local\Temp\603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mjduaezf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mjduaezf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2548
- 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:2184

C:\Windows\SysWOW64\mjduaezf\rdyvcbbp.exe
C:\Windows\SysWOW64\mjduaezf\rdyvcbbp.exe /d"C:\Users\Admin\AppData\Local\Temp\603b77f0ac8874df7836569314c53bc4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3608

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\rdyvcbbp.exe

Filesize
14.9MB

MD5
fd7e874bff1cccf34d5f06338c466287

SHA1
10dcf64096c8cc5a3e97469f48c24d7cbc387147

SHA256
0512b6e324a010268c84b760dbab4fc2fd07b293fa25f692fbc92a37d4629c51

SHA512
37861ce3a002f0c2952bb46ca1cd1a5b85f135862655ea483633c2ec1ebb216119b84a513db98d1faafae2ac811a8c3512d0d8ba256ee1212ea509e1a8b14252

Download Submit
memory/1684-9-0x00000000008E0000-0x00000000008F3000-memory.dmp

Filesize
76KB

Download
memory/1684-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1684-2-0x00000000008E0000-0x00000000008F3000-memory.dmp

Filesize
76KB

Download
memory/1684-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1684-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1684-1-0x00000000009D0000-0x0000000000AD0000-memory.dmp

Filesize
1024KB

Download
memory/3608-13-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/3608-15-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/3608-18-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/4360-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4360-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4360-17-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads