tofsee | 1fa257f7b2a9e043722395250eb0e81fe3d467da15c75d97042948c1fac5edec

General

Target

ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe
Size

14.0MB
MD5

ab87b84a0adc37db621ed3048349fe7c
SHA1

cc8688b7eeeb7a0655a98fa152e94d35f452aa73
SHA256

1fa257f7b2a9e043722395250eb0e81fe3d467da15c75d97042948c1fac5edec
SHA512

9195b86abd69d327c51e5424f329d99b6cd2454606597d3e925f76ff2606fadfeb81cb94abaa443c18e1b45ae868710390b76299dbc35744f8058dc9725a4d15
SSDEEP

24576:6htJbmFQuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu3:DF

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
992	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\couhxhzz\ImagePath = "C:\\Windows\\SysWOW64\\couhxhzz\\vqadrcck.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4412	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4776	vqadrcck.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4776 set thread context of 4412	4776	vqadrcck.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
444	sc.exe
4748	sc.exe
1632	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
304	5048	WerFault.exe	81
4520	4776	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vqadrcck.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 1000	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	82
PID 5048 wrote to memory of 1000	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	82
PID 5048 wrote to memory of 1000	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	82
PID 5048 wrote to memory of 2308	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	84
PID 5048 wrote to memory of 2308	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	84
PID 5048 wrote to memory of 2308	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	84
PID 5048 wrote to memory of 444	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	86
PID 5048 wrote to memory of 444	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	86
PID 5048 wrote to memory of 444	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	86
PID 5048 wrote to memory of 4748	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	88
PID 5048 wrote to memory of 4748	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	88
PID 5048 wrote to memory of 4748	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	88
PID 5048 wrote to memory of 1632	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	92
PID 5048 wrote to memory of 1632	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	92
PID 5048 wrote to memory of 1632	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	92
PID 5048 wrote to memory of 992	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	95
PID 5048 wrote to memory of 992	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	95
PID 5048 wrote to memory of 992	5048	ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe	95
PID 4776 wrote to memory of 4412	4776	vqadrcck.exe	102
PID 4776 wrote to memory of 4412	4776	vqadrcck.exe	102
PID 4776 wrote to memory of 4412	4776	vqadrcck.exe	102
PID 4776 wrote to memory of 4412	4776	vqadrcck.exe	102
PID 4776 wrote to memory of 4412	4776	vqadrcck.exe	102

C:\Users\Admin\AppData\Local\Temp\ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\couhxhzz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vqadrcck.exe" C:\Windows\SysWOW64\couhxhzz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create couhxhzz binPath= "C:\Windows\SysWOW64\couhxhzz\vqadrcck.exe /d\"C:\Users\Admin\AppData\Local\Temp\ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description couhxhzz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start couhxhzz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1632
- 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:992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 656
  2⤵
  - Program crash
  PID:304

C:\Windows\SysWOW64\couhxhzz\vqadrcck.exe
C:\Windows\SysWOW64\couhxhzz\vqadrcck.exe /d"C:\Users\Admin\AppData\Local\Temp\ab87b84a0adc37db621ed3048349fe7c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4776 -s 508
  2⤵
  - Program crash
  PID:4520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 5048 -ip 5048
1⤵
PID:4320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4776 -ip 4776
1⤵
PID:620

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\vqadrcck.exe

Filesize
14.1MB

MD5
967bc225559bd2f4383502cec49b99d6

SHA1
ce8b2a04326397e59f5c348026104b6ddcef9a14

SHA256
3de36318fbe58791ee37ee1ddeb0aa80b1c7b417ace8916d98ec8013bc552e7f

SHA512
93f01f181a57c41addf65de651c8915c2c819fda0d8e330041f726dcd89f757b5c537e02dec7ccc3bbc7dd11998e15364f695d1ae617c88686de23e6c4fb00e7

Download Submit
memory/4412-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4412-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4412-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4776-13-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4776-12-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4776-11-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4776-18-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/5048-8-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/5048-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5048-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/5048-9-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/5048-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5048-2-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads