tofsee | f12c3ea15e645b1685fbed815adcfdd21374d5f48ae50c45e9ddbad1edc4d39b

General

Target

JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe
Size

11.7MB
MD5

42a65373c62c1257fd39534ab11140c8
SHA1

24dbfae85496e3c18ddb89d279f4e82fec9a2cac
SHA256

f12c3ea15e645b1685fbed815adcfdd21374d5f48ae50c45e9ddbad1edc4d39b
SHA512

afb7a35ba6a56a3cb9caf87b9aa0713e7fa6371164d2946425f571b699723354f3f21af8fbf84f8fed5d376905521f396500692bc0ec34067cbd2065c37e793f
SSDEEP

49152:Dyn7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x/:Dy

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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
1548	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\nkwgrhbe\ImagePath = "C:\\Windows\\SysWOW64\\nkwgrhbe\\kntncnye.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe

Deletes itself 1 IoCs

pid	Process
2416	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4288	kntncnye.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4288 set thread context of 2416	4288	kntncnye.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4584	sc.exe
372	sc.exe
4904	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
764	2588	WerFault.exe	82
2680	4288	WerFault.exe	94

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_42a65373c62c1257fd39534ab11140c8.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kntncnye.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2588 wrote to memory of 2428	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	83
PID 2588 wrote to memory of 2428	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	83
PID 2588 wrote to memory of 2428	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	83
PID 2588 wrote to memory of 2440	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	85
PID 2588 wrote to memory of 2440	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	85
PID 2588 wrote to memory of 2440	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	85
PID 2588 wrote to memory of 4584	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	87
PID 2588 wrote to memory of 4584	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	87
PID 2588 wrote to memory of 4584	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	87
PID 2588 wrote to memory of 372	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	89
PID 2588 wrote to memory of 372	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	89
PID 2588 wrote to memory of 372	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	89
PID 2588 wrote to memory of 4904	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	92
PID 2588 wrote to memory of 4904	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	92
PID 2588 wrote to memory of 4904	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	92
PID 2588 wrote to memory of 1548	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	95
PID 2588 wrote to memory of 1548	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	95
PID 2588 wrote to memory of 1548	2588	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	95
PID 4288 wrote to memory of 2416	4288	kntncnye.exe	100
PID 4288 wrote to memory of 2416	4288	kntncnye.exe	100
PID 4288 wrote to memory of 2416	4288	kntncnye.exe	100
PID 4288 wrote to memory of 2416	4288	kntncnye.exe	100
PID 4288 wrote to memory of 2416	4288	kntncnye.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nkwgrhbe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kntncnye.exe" C:\Windows\SysWOW64\nkwgrhbe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2440
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nkwgrhbe binPath= "C:\Windows\SysWOW64\nkwgrhbe\kntncnye.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nkwgrhbe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nkwgrhbe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4904
- 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:1548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2588 -s 572
  2⤵
  - Program crash
  PID:764

C:\Windows\SysWOW64\nkwgrhbe\kntncnye.exe
C:\Windows\SysWOW64\nkwgrhbe\kntncnye.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4288
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4288 -s 516
  2⤵
  - Program crash
  PID:2680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2588 -ip 2588
1⤵
PID:3888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4288 -ip 4288
1⤵
PID:1276

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\kntncnye.exe

Filesize
13.5MB

MD5
736c95e77738b97e5a85ff247c8ebafc

SHA1
26f77ca24e583cc8393b0a9033ab6a4013fa7f14

SHA256
61976095743a2669c674bf0b40daf6fcefa4d1fe4558150fe25efbed00731c14

SHA512
c78fbad2c8b300fb4232b1a1eebcc2419bdb8fa17ab6d7acf5bfa179f919a0be44a8ac4d5119e431998d82be9482e432badae967b50247e5e3751c54b4d0f00e

Download Submit
memory/2416-11-0x0000000000D80000-0x0000000000D95000-memory.dmp

Filesize
84KB

Download
memory/2416-22-0x0000000000D80000-0x0000000000D95000-memory.dmp

Filesize
84KB

Download
memory/2416-21-0x0000000000D80000-0x0000000000D95000-memory.dmp

Filesize
84KB

Download
memory/2416-20-0x0000000000D80000-0x0000000000D95000-memory.dmp

Filesize
84KB

Download
memory/2416-14-0x0000000000D80000-0x0000000000D95000-memory.dmp

Filesize
84KB

Download
memory/2588-16-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/2588-15-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2588-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2588-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download
memory/2588-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2588-2-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/4288-8-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/4288-9-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/4288-19-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/4288-10-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads