tofsee | 59525627bd56344ad6a2096e0ececd82ea8f6d7f0501c2baa081c00374b9bbba

General

Target

61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe
Size

14.8MB
MD5

61cce2104b866e7c94f675006355ee04
SHA1

2aad7d1cff84cd32f59bfdb6eceed80e79eae3de
SHA256

59525627bd56344ad6a2096e0ececd82ea8f6d7f0501c2baa081c00374b9bbba
SHA512

70cfd5beadff191513dab60af02569f4578bd8ae3af138a0d4a782ff3be47ef9a87eb08dbedfdb8d81500aef32d89507f2e775510644839bcb476015c8e713ce
SSDEEP

24576:YMOfbSPNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN7:E

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
4828	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\kbqtftez\ImagePath = "C:\\Windows\\SysWOW64\\kbqtftez\\rpzxxnwm.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2316	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1192	rpzxxnwm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1192 set thread context of 2316	1192	rpzxxnwm.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
4044	sc.exe
1760	sc.exe
3888	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
4524	2744	WerFault.exe	85
2752	1192	WerFault.exe	99

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	61cce2104b866e7c94f675006355ee04_JaffaCakes118.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rpzxxnwm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 4920	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	87
PID 2744 wrote to memory of 4920	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	87
PID 2744 wrote to memory of 4920	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	87
PID 2744 wrote to memory of 3384	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	89
PID 2744 wrote to memory of 3384	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	89
PID 2744 wrote to memory of 3384	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	89
PID 2744 wrote to memory of 4044	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	91
PID 2744 wrote to memory of 4044	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	91
PID 2744 wrote to memory of 4044	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	91
PID 2744 wrote to memory of 1760	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	95
PID 2744 wrote to memory of 1760	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	95
PID 2744 wrote to memory of 1760	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	95
PID 2744 wrote to memory of 3888	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	97
PID 2744 wrote to memory of 3888	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	97
PID 2744 wrote to memory of 3888	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	97
PID 2744 wrote to memory of 4828	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	101
PID 2744 wrote to memory of 4828	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	101
PID 2744 wrote to memory of 4828	2744	61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe	101
PID 1192 wrote to memory of 2316	1192	rpzxxnwm.exe	107
PID 1192 wrote to memory of 2316	1192	rpzxxnwm.exe	107
PID 1192 wrote to memory of 2316	1192	rpzxxnwm.exe	107
PID 1192 wrote to memory of 2316	1192	rpzxxnwm.exe	107
PID 1192 wrote to memory of 2316	1192	rpzxxnwm.exe	107

C:\Users\Admin\AppData\Local\Temp\61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kbqtftez\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4920
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rpzxxnwm.exe" C:\Windows\SysWOW64\kbqtftez\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kbqtftez binPath= "C:\Windows\SysWOW64\kbqtftez\rpzxxnwm.exe /d\"C:\Users\Admin\AppData\Local\Temp\61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kbqtftez "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kbqtftez
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3888
- 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:4828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2744 -s 1044
  2⤵
  - Program crash
  PID:4524

C:\Windows\SysWOW64\kbqtftez\rpzxxnwm.exe
C:\Windows\SysWOW64\kbqtftez\rpzxxnwm.exe /d"C:\Users\Admin\AppData\Local\Temp\61cce2104b866e7c94f675006355ee04_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1192 -s 536
  2⤵
  - Program crash
  PID:2752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2744 -ip 2744
1⤵
PID:704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1192 -ip 1192
1⤵
PID:4892

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\rpzxxnwm.exe

Filesize
12.4MB

MD5
abd00e193f8080a1e454cc7d38e3bcb1

SHA1
f4cc9d7894ed925bf40bb7ed847b9673ae9cdf27

SHA256
5576d667a7aa56e02268dac306cc19d6f792522365fac25c1d1c96e7a2696294

SHA512
15ed7b259b1ec93a4671308b9d616fa648f6346370898240a44a7bb3d4a5101a682506195daac523cdcc6b3319959aa80b6fec819da9aef451bc540a3eee449a

Download Submit
memory/1192-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2316-11-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2316-13-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2316-14-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2744-1-0x0000000002E70000-0x0000000002F70000-memory.dmp

Filesize
1024KB

Download
memory/2744-2-0x0000000002DE0000-0x0000000002DF3000-memory.dmp

Filesize
76KB

Download
memory/2744-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2744-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2744-9-0x0000000002DE0000-0x0000000002DF3000-memory.dmp

Filesize
76KB

Download
memory/2744-8-0x0000000000400000-0x0000000002B8F000-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