tofsee | 6a6c76468f25ca6d92463cc715fe615b2b449468a85e9c183693d8ea5a70fff1

General

Target

26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe
Size

235KB
MD5

26a5a30af2a8f19775fb79d1679052e6
SHA1

e1cdeb1061c6770b619412e5f06dd73121354e74
SHA256

6a6c76468f25ca6d92463cc715fe615b2b449468a85e9c183693d8ea5a70fff1
SHA512

479196b7479b87f302a16c6e99dfaa1291be9f57f2420c1d68fcc2236d86003b3105a70b1d0b3f92d141c5c5e368a05b40a57e98f19d3cf798b852860003370a
SSDEEP

3072:RHYT/V2WmOfWSnTEXvoH8Gz5sFhQ/XScsYh6gSVywo3c+:RHa5mO//H8XjiC7knGyHM

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\homffnbz = "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

2092 netsh.exe

pid	process
2092	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\homffnbz\ImagePath = "C:\\Windows\\SysWOW64\\homffnbz\\xbeamvso.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2556 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

xbeamvso.exe

pid process

1404 xbeamvso.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

xbeamvso.exe

description pid process target process

PID 1404 set thread context of 2556 1404 xbeamvso.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

480 sc.exe
2748 sc.exe
2396 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2556	svchost.exe

pid	process
1404	xbeamvso.exe

description	pid	process	target process
PID 1404 set thread context of 2556	1404	xbeamvso.exe	svchost.exe

pid	process
480	sc.exe
2748	sc.exe
2396	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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.exexbeamvso.exe26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exesc.exesc.exenetsh.exesvchost.execmd.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	xbeamvso.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exexbeamvso.exe

description	pid	process	target process
PID 2636 wrote to memory of 2968	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2968	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2968	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2968	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2160	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2160	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2160	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2160	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	cmd.exe
PID 2636 wrote to memory of 2748	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2748	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2748	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2748	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2396	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2396	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2396	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 2396	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 480	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 480	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 480	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 2636 wrote to memory of 480	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	sc.exe
PID 1404 wrote to memory of 2556	1404	xbeamvso.exe	svchost.exe
PID 1404 wrote to memory of 2556	1404	xbeamvso.exe	svchost.exe
PID 1404 wrote to memory of 2556	1404	xbeamvso.exe	svchost.exe
PID 1404 wrote to memory of 2556	1404	xbeamvso.exe	svchost.exe
PID 1404 wrote to memory of 2556	1404	xbeamvso.exe	svchost.exe
PID 1404 wrote to memory of 2556	1404	xbeamvso.exe	svchost.exe
PID 2636 wrote to memory of 2092	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	netsh.exe
PID 2636 wrote to memory of 2092	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	netsh.exe
PID 2636 wrote to memory of 2092	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	netsh.exe
PID 2636 wrote to memory of 2092	2636	26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\homffnbz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xbeamvso.exe" C:\Windows\SysWOW64\homffnbz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2160
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create homffnbz binPath= "C:\Windows\SysWOW64\homffnbz\xbeamvso.exe /d\"C:\Users\Admin\AppData\Local\Temp\26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description homffnbz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start homffnbz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:480
- 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:2092

C:\Windows\SysWOW64\homffnbz\xbeamvso.exe
C:\Windows\SysWOW64\homffnbz\xbeamvso.exe /d"C:\Users\Admin\AppData\Local\Temp\26a5a30af2a8f19775fb79d1679052e6_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1404
- 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:2556

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\xbeamvso.exe

Filesize
13.7MB

MD5
2a1d5adad39955ad01321510a76bd1ef

SHA1
863abc4366fe12c4e922ddec0efaaf21253297f6

SHA256
76f5a734f7e27bfc60dcb2ee4b5e69625e197e54b890bbdd25eba9286d28ec28

SHA512
5cadec83583a2832045a25a493a914d23b34cf49aeed4c3446954fea1a3f989a698a0aec49e02f5afbd2202ae0718715e02a0a61cded83d624573f93e8d39bf5

Download Submit
memory/1404-13-0x0000000000400000-0x0000000002C71000-memory.dmp

Filesize
40.4MB

Download
memory/2556-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2556-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2556-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2556-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2556-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2636-1-0x0000000002CF0000-0x0000000002DF0000-memory.dmp

Filesize
1024KB

Download
memory/2636-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2636-2-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/2636-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2636-14-0x0000000000400000-0x0000000002C71000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads