tofsee | b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f

General

Target

JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe
Size

285KB
MD5

af9e5d753d03655da119c7e35cb59c5f
SHA1

e2797ebf86a7d535cfebd2f3ff6ab022d7888aaf
SHA256

b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f
SHA512

93b09c81dcab40163afa8c75835b4bbcb5a87d378bbd7cccdc2fc96257c44b3882c1ab9b7ed14027d43ab10b5c00fb52d2bb2aedaa2c356697b69d0e317e2b99
SSDEEP

6144:ANXxcSzbHJgv0pc+mNAArvCkSIbceTdp45YakI/:ANXKsbHCcpWuaTJHpHav/

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
2928	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\drasoyow\ImagePath = "C:\\Windows\\SysWOW64\\drasoyow\\wzxsmtdn.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	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe

Deletes itself 1 IoCs

pid	Process
4640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3896	wzxsmtdn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3896 set thread context of 4640	3896	wzxsmtdn.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
4892	sc.exe
1732	sc.exe
1644	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	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wzxsmtdn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 3936	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	82
PID 2644 wrote to memory of 3936	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	82
PID 2644 wrote to memory of 3936	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	82
PID 2644 wrote to memory of 1976	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	84
PID 2644 wrote to memory of 1976	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	84
PID 2644 wrote to memory of 1976	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	84
PID 2644 wrote to memory of 4892	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	86
PID 2644 wrote to memory of 4892	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	86
PID 2644 wrote to memory of 4892	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	86
PID 2644 wrote to memory of 1732	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	88
PID 2644 wrote to memory of 1732	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	88
PID 2644 wrote to memory of 1732	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	88
PID 2644 wrote to memory of 1644	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	90
PID 2644 wrote to memory of 1644	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	90
PID 2644 wrote to memory of 1644	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	90
PID 2644 wrote to memory of 2928	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	93
PID 2644 wrote to memory of 2928	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	93
PID 2644 wrote to memory of 2928	2644	JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe	93
PID 3896 wrote to memory of 4640	3896	wzxsmtdn.exe	95
PID 3896 wrote to memory of 4640	3896	wzxsmtdn.exe	95
PID 3896 wrote to memory of 4640	3896	wzxsmtdn.exe	95
PID 3896 wrote to memory of 4640	3896	wzxsmtdn.exe	95
PID 3896 wrote to memory of 4640	3896	wzxsmtdn.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\drasoyow\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wzxsmtdn.exe" C:\Windows\SysWOW64\drasoyow\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create drasoyow binPath= "C:\Windows\SysWOW64\drasoyow\wzxsmtdn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description drasoyow "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start drasoyow
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1644
- 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:2928

C:\Windows\SysWOW64\drasoyow\wzxsmtdn.exe
C:\Windows\SysWOW64\drasoyow\wzxsmtdn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b78bfeec5a89e18c0d6b3cb94bc55cebfb00b3391cc1d0ad6d1ae45e85e0782f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3896
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4640

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\wzxsmtdn.exe

Filesize
11.3MB

MD5
604dad2cfe0e2dd86906d56160896c59

SHA1
560327afc349d58b3ee719c034873755e16d4f0d

SHA256
03517ee6774999f3707fd0db1dfe319003a9552a6eae4a102a24a9919e4f2f70

SHA512
ac71f63674152a1b77037b8766bf478da8d281fbeb8a7fe009954636dd5e58d1df599973570d9b6f812fa717c0427f1d63e105df6132f200b0e13094488f84a6

Download Submit
memory/2644-1-0x0000000002D00000-0x0000000002E00000-memory.dmp

Filesize
1024KB

Download
memory/2644-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/2644-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2644-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2644-9-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/2644-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/3896-14-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/4640-11-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/4640-13-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/4640-15-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads