tofsee | 16ad57aecbfa943ed105d550c94a348aa013c8dea6b3e9281b317d464d74d9f6

General

Target

e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe
Size

12.6MB
MD5

e3b05fdf50cf2ba019181a935c1fdde5
SHA1

8b5aaf25c9f5001089b7b60380e3173c5d98f8dc
SHA256

16ad57aecbfa943ed105d550c94a348aa013c8dea6b3e9281b317d464d74d9f6
SHA512

e5e3586be6916888237dfac294ab57c753212f270efd4f9c4c8206912fc953bcdcb21a2400797266e1e0ada4ae69bde0a1cdd274f9a52407edd077d123909e8b
SSDEEP

24576:iBYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYP:i

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\chdbwtky = "0"	svchost.exe

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

Processes:

netsh.exe

pid process

2772 netsh.exe

pid	process
2772	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\chdbwtky\ImagePath = "C:\\Windows\\SysWOW64\\chdbwtky\\kaaapgme.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2732 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

kaaapgme.exe

pid process

2796 kaaapgme.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

kaaapgme.exe

description pid process target process

PID 2796 set thread context of 2732 2796 kaaapgme.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2936 sc.exe
2032 sc.exe
2720 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2732	svchost.exe

pid	process
2796	kaaapgme.exe

description	pid	process	target process
PID 2796 set thread context of 2732	2796	kaaapgme.exe	svchost.exe

pid	process
2936	sc.exe
2032	sc.exe
2720	sc.exe

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

Processes:

netsh.exe

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

Processes:

cmd.exesc.exenetsh.exekaaapgme.exesvchost.exee3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.execmd.exesc.exesc.exe

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kaaapgme.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e3b05fdf50cf2ba019181a935c1fdde5_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	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exekaaapgme.exe

description	pid	process	target process
PID 2344 wrote to memory of 1916	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	cmd.exe
PID 2344 wrote to memory of 1916	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	cmd.exe
PID 2344 wrote to memory of 1916	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	cmd.exe
PID 2344 wrote to memory of 1916	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	cmd.exe
PID 2344 wrote to memory of 3068	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	cmd.exe
PID 2344 wrote to memory of 3068	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	cmd.exe
PID 2344 wrote to memory of 3068	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	cmd.exe
PID 2344 wrote to memory of 3068	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	cmd.exe
PID 2344 wrote to memory of 2936	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2936	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2936	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2936	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2032	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2032	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2032	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2032	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2720	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2720	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2720	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2720	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	sc.exe
PID 2344 wrote to memory of 2772	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	netsh.exe
PID 2344 wrote to memory of 2772	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	netsh.exe
PID 2344 wrote to memory of 2772	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	netsh.exe
PID 2344 wrote to memory of 2772	2344	e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe	netsh.exe
PID 2796 wrote to memory of 2732	2796	kaaapgme.exe	svchost.exe
PID 2796 wrote to memory of 2732	2796	kaaapgme.exe	svchost.exe
PID 2796 wrote to memory of 2732	2796	kaaapgme.exe	svchost.exe
PID 2796 wrote to memory of 2732	2796	kaaapgme.exe	svchost.exe
PID 2796 wrote to memory of 2732	2796	kaaapgme.exe	svchost.exe
PID 2796 wrote to memory of 2732	2796	kaaapgme.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\chdbwtky\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kaaapgme.exe" C:\Windows\SysWOW64\chdbwtky\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create chdbwtky binPath= "C:\Windows\SysWOW64\chdbwtky\kaaapgme.exe /d\"C:\Users\Admin\AppData\Local\Temp\e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2936
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description chdbwtky "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2032
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start chdbwtky
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2720
- 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:2772

C:\Windows\SysWOW64\chdbwtky\kaaapgme.exe
C:\Windows\SysWOW64\chdbwtky\kaaapgme.exe /d"C:\Users\Admin\AppData\Local\Temp\e3b05fdf50cf2ba019181a935c1fdde5_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2732

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\kaaapgme.exe

Filesize
11.7MB

MD5
2341b07791a31c16b424dad598dede63

SHA1
cfa622ab0b0bd36a5c8f9116df6c94e67d540a5c

SHA256
385030726bb4dac4e45f22b74a33158c4fe0c21b313f59e7a65723378eed7a76

SHA512
36babbf4b09151d44bf14276c11d63b3688ca66767af0d28343bb2d1b6d8ef31191961aeccabcecf26e0c6fff0aba316ede0f4bca7f9d6e30a5448accb0e570d

Download Submit
memory/2344-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2344-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2344-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2344-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2344-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2344-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/2732-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2732-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2732-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2732-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2732-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2796-16-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads