tofsee | be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412

General

Target

JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe
Size

286KB
MD5

92082f3ee0d8768ec943b5d97e35a24d
SHA1

131eab6d807db91b27baff834254fc5c8d6fc184
SHA256

be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412
SHA512

497f0722881b28324ff211808b332ba92717635dc26b7cde8f1c12e01253819cb13219f16517d8161e6d07800bb3345cd505482a201283ea360cc1d73530ae59
SSDEEP

6144:C2ngr+QI7fbVAHpwWM6iujFfov3bMXLoy:C2ngr+QI7fbIwgiuAbe

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
2588	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\vezunnpt\ImagePath = "C:\\Windows\\SysWOW64\\vezunnpt\\audnadiu.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe

Deletes itself 1 IoCs

pid	Process
2816	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1664	audnadiu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1664 set thread context of 2816	1664	audnadiu.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3740	sc.exe
3440	sc.exe
3124	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2540	4792	WerFault.exe	81
2912	1664	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	audnadiu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 4644	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	82
PID 4792 wrote to memory of 4644	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	82
PID 4792 wrote to memory of 4644	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	82
PID 4792 wrote to memory of 3600	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	84
PID 4792 wrote to memory of 3600	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	84
PID 4792 wrote to memory of 3600	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	84
PID 4792 wrote to memory of 3740	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	86
PID 4792 wrote to memory of 3740	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	86
PID 4792 wrote to memory of 3740	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	86
PID 4792 wrote to memory of 3440	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	88
PID 4792 wrote to memory of 3440	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	88
PID 4792 wrote to memory of 3440	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	88
PID 4792 wrote to memory of 3124	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	90
PID 4792 wrote to memory of 3124	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	90
PID 4792 wrote to memory of 3124	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	90
PID 4792 wrote to memory of 2588	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	93
PID 4792 wrote to memory of 2588	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	93
PID 4792 wrote to memory of 2588	4792	JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe	93
PID 1664 wrote to memory of 2816	1664	audnadiu.exe	98
PID 1664 wrote to memory of 2816	1664	audnadiu.exe	98
PID 1664 wrote to memory of 2816	1664	audnadiu.exe	98
PID 1664 wrote to memory of 2816	1664	audnadiu.exe	98
PID 1664 wrote to memory of 2816	1664	audnadiu.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vezunnpt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\audnadiu.exe" C:\Windows\SysWOW64\vezunnpt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vezunnpt binPath= "C:\Windows\SysWOW64\vezunnpt\audnadiu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vezunnpt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3440
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vezunnpt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3124
- 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:2588
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4792 -s 1364
  2⤵
  - Program crash
  PID:2540

C:\Windows\SysWOW64\vezunnpt\audnadiu.exe
C:\Windows\SysWOW64\vezunnpt\audnadiu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_be6deee755d6a66153ddac7571805f5e2d50b067ad240e27210952a228607412.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1664
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1664 -s 512
  2⤵
  - Program crash
  PID:2912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4792 -ip 4792
1⤵
PID:3132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1664 -ip 1664
1⤵
PID:2772

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\audnadiu.exe

Filesize
14.0MB

MD5
15ccb99574abf25df72252caadd82dcb

SHA1
71205c12bca646af0a9e69a6072777f35dd9ebcc

SHA256
5034aa4a7c62df9ce585956009bf641b25c70e59ba89bbb2a76d721197c67d45

SHA512
8d44109db394b8918b179353bbcf33d2b6b68557b5514ecad60bf0641d04fc4f7e2a1a6a2fd56d6ed885d384dc600b77722ed4f8733fdce0922c445836d0e82b

Download Submit
memory/1664-15-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2816-11-0x0000000000BB0000-0x0000000000BC5000-memory.dmp

Filesize
84KB

Download
memory/2816-13-0x0000000000BB0000-0x0000000000BC5000-memory.dmp

Filesize
84KB

Download
memory/2816-14-0x0000000000BB0000-0x0000000000BC5000-memory.dmp

Filesize
84KB

Download
memory/4792-1-0x0000000002D90000-0x0000000002E90000-memory.dmp

Filesize
1024KB

Download
memory/4792-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4792-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4792-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4792-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4792-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads