tofsee | ada1625907b9d1a90cb4ee844b69b9c66ea0c520bbf05c6a73e0812e435fa8da

General

Target

e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe
Size

14.3MB
MD5

e856a93a08f97a40c1e08805ceff132e
SHA1

5e5834e448da4c412fc63e4b9d3fe3f4ac0bb0aa
SHA256

ada1625907b9d1a90cb4ee844b69b9c66ea0c520bbf05c6a73e0812e435fa8da
SHA512

791c044b02f574c2b84fae88cf60c7a2a085eba8bfc676d15d49aec499590aa238f8300dbab3c9bf28bbb12a7d9d88d07a34ab7d9d01b357e7cc23382b0d3e80
SSDEEP

49152:bsOuBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBJ:bL

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\zteiaxzn = "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

2728 netsh.exe

pid	process
2728	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\zteiaxzn\ImagePath = "C:\\Windows\\SysWOW64\\zteiaxzn\\nusdidrf.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2776 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

nusdidrf.exe

pid process

2736 nusdidrf.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

nusdidrf.exe

description pid process target process

PID 2736 set thread context of 2776 2736 nusdidrf.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

2472 sc.exe
2808 sc.exe
2964 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2776	svchost.exe

pid	process
2736	nusdidrf.exe

description	pid	process	target process
PID 2736 set thread context of 2776	2736	nusdidrf.exe	svchost.exe

pid	process
2472	sc.exe
2808	sc.exe
2964	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.exenetsh.exee856a93a08f97a40c1e08805ceff132e_JaffaCakes118.execmd.exesc.exesc.exesc.exenusdidrf.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e856a93a08f97a40c1e08805ceff132e_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nusdidrf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exenusdidrf.exe

description	pid	process	target process
PID 2692 wrote to memory of 2396	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	cmd.exe
PID 2692 wrote to memory of 2396	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	cmd.exe
PID 2692 wrote to memory of 2396	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	cmd.exe
PID 2692 wrote to memory of 2396	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	cmd.exe
PID 2692 wrote to memory of 1724	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	cmd.exe
PID 2692 wrote to memory of 1724	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	cmd.exe
PID 2692 wrote to memory of 1724	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	cmd.exe
PID 2692 wrote to memory of 1724	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	cmd.exe
PID 2692 wrote to memory of 2472	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2472	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2472	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2472	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2808	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2808	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2808	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2808	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2964	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2964	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2964	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2964	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	sc.exe
PID 2692 wrote to memory of 2728	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	netsh.exe
PID 2692 wrote to memory of 2728	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	netsh.exe
PID 2692 wrote to memory of 2728	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	netsh.exe
PID 2692 wrote to memory of 2728	2692	e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe	netsh.exe
PID 2736 wrote to memory of 2776	2736	nusdidrf.exe	svchost.exe
PID 2736 wrote to memory of 2776	2736	nusdidrf.exe	svchost.exe
PID 2736 wrote to memory of 2776	2736	nusdidrf.exe	svchost.exe
PID 2736 wrote to memory of 2776	2736	nusdidrf.exe	svchost.exe
PID 2736 wrote to memory of 2776	2736	nusdidrf.exe	svchost.exe
PID 2736 wrote to memory of 2776	2736	nusdidrf.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zteiaxzn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nusdidrf.exe" C:\Windows\SysWOW64\zteiaxzn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zteiaxzn binPath= "C:\Windows\SysWOW64\zteiaxzn\nusdidrf.exe /d\"C:\Users\Admin\AppData\Local\Temp\e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zteiaxzn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2808
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zteiaxzn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2964
- 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:2728

C:\Windows\SysWOW64\zteiaxzn\nusdidrf.exe
C:\Windows\SysWOW64\zteiaxzn\nusdidrf.exe /d"C:\Users\Admin\AppData\Local\Temp\e856a93a08f97a40c1e08805ceff132e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- 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:2776

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\nusdidrf.exe

Filesize
12.1MB

MD5
69513948e6ded97d38c44611f2b225a8

SHA1
90a3f1bad53925faa87e69abeaf69feccb493dcf

SHA256
6eee5f51e67675a6f06e295c247f3c2919fa9b4ff56238b5c30747e69cc2a061

SHA512
c9f293b07afed4b840626dec30e47495906941b9b5d420d83ba34a6f35c24fceb911561279239cb43208a9403041ab88acf9bd7182fd8a462f3d5a04796bcad4

Download Submit
memory/2692-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2692-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2692-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2692-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2692-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2692-1-0x00000000008E0000-0x00000000009E0000-memory.dmp

Filesize
1024KB

Download
memory/2736-17-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2776-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2776-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2776-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2776-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2776-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads