tofsee | 42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777

General

Target

JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe
Size

327KB
MD5

31bdff595ea41c72b706d487bbe4631b
SHA1

f362b7edad57b5d18afba3b0a3917aad800e4985
SHA256

42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777
SHA512

ae6c7a9cd5180076e72501cc0147df2e03e8016027d3f883617399159345696ecf9782721aab4f91541f0be9b25ce9b64f63a5dc28a6ede940020c73098154f7
SSDEEP

6144:O+IZcqfRAQbNAJIZMVfwoFFTnDLu2EfyrprpuxcmqA:OTZcqfqJBnDLu2E+pV0

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.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
3308	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\kxfgoyr\ImagePath = "C:\\Windows\\SysWOW64\\kxfgoyr\\wfowkckt.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe

Deletes itself 1 IoCs

pid	Process
2664	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1848	wfowkckt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1848 set thread context of 2664	1848	wfowkckt.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
948	sc.exe
4740	sc.exe
5108	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
2552	4468	WerFault.exe	84
2344	1848	WerFault.exe	96

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.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	wfowkckt.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 23 IoCs

description	pid	Process	procid_target
PID 4468 wrote to memory of 2580	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	85
PID 4468 wrote to memory of 2580	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	85
PID 4468 wrote to memory of 2580	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	85
PID 4468 wrote to memory of 4004	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	87
PID 4468 wrote to memory of 4004	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	87
PID 4468 wrote to memory of 4004	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	87
PID 4468 wrote to memory of 948	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	90
PID 4468 wrote to memory of 948	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	90
PID 4468 wrote to memory of 948	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	90
PID 4468 wrote to memory of 4740	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	92
PID 4468 wrote to memory of 4740	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	92
PID 4468 wrote to memory of 4740	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	92
PID 4468 wrote to memory of 5108	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	94
PID 4468 wrote to memory of 5108	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	94
PID 4468 wrote to memory of 5108	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	94
PID 4468 wrote to memory of 3308	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	97
PID 4468 wrote to memory of 3308	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	97
PID 4468 wrote to memory of 3308	4468	JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe	97
PID 1848 wrote to memory of 2664	1848	wfowkckt.exe	103
PID 1848 wrote to memory of 2664	1848	wfowkckt.exe	103
PID 1848 wrote to memory of 2664	1848	wfowkckt.exe	103
PID 1848 wrote to memory of 2664	1848	wfowkckt.exe	103
PID 1848 wrote to memory of 2664	1848	wfowkckt.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4468
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kxfgoyr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2580
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wfowkckt.exe" C:\Windows\SysWOW64\kxfgoyr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kxfgoyr binPath= "C:\Windows\SysWOW64\kxfgoyr\wfowkckt.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kxfgoyr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kxfgoyr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5108
- 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:3308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4468 -s 640
  2⤵
  - Program crash
  PID:2552

C:\Windows\SysWOW64\kxfgoyr\wfowkckt.exe
C:\Windows\SysWOW64\kxfgoyr\wfowkckt.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42c84b049e03a1bad9a8267d9843dc42c8f83be2128725250b56c0ee5d9e5777.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1848 -s 532
  2⤵
  - Program crash
  PID:2344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4468 -ip 4468
1⤵
PID:3640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1848 -ip 1848
1⤵
PID:4788

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\wfowkckt.exe

Filesize
11.7MB

MD5
ce073745d4095a7f09c74d6b4da920a5

SHA1
a3a8fb9373cc0a03c428ccd03c41d1b41d15e88a

SHA256
482f64c4cde4942cba9bd709dfa6111f6325cbd3f7482be4cf055975ce875d71

SHA512
ab3373a58030105de55b3ede138cd03b52fad55419d21963dc96a0d7503c68c794d1410990519820495fc92e2bee7809ab2d573640be1b2bf737a7b34c4de0c5

Download Submit
memory/1848-15-0x0000000000400000-0x00000000023A8000-memory.dmp

Filesize
31.7MB

Download
memory/2664-13-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2664-11-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2664-14-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/4468-1-0x00000000024E0000-0x00000000025E0000-memory.dmp

Filesize
1024KB

Download
memory/4468-2-0x00000000040F0000-0x0000000004103000-memory.dmp

Filesize
76KB

Download
memory/4468-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4468-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4468-8-0x00000000040F0000-0x0000000004103000-memory.dmp

Filesize
76KB

Download
memory/4468-7-0x0000000000400000-0x00000000023A8000-memory.dmp

Filesize
31.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads