tofsee | 604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c

General

Target

JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe
Size

159KB
MD5

1ab812dbbd226dae57323b8fe47bbdc7
SHA1

11b1a29723a044416dfde417256868bad66add0c
SHA256

604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c
SHA512

cd3166963f7d6780a87faef819946b827ed844656e029886666fa602e22f975f7196d6ad1f22f2bc80c543ef3efb8ecfcf8be77686edf28a0e2445fb7ee1ff75
SSDEEP

3072:s47FGXpybBYWhlcijEKINB1eazv3v3XVU/mtAuT:sHpybBYWh+iRa1Z3XmsA

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
1708	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\eheqnabs\ImagePath = "C:\\Windows\\SysWOW64\\eheqnabs\\kcubarcj.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe

Deletes itself 1 IoCs

pid	Process
1904	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1796	kcubarcj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1796 set thread context of 1904	1796	kcubarcj.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3744	sc.exe
2204	sc.exe
4044	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
1748	1796	WerFault.exe	94
2880	4576	WerFault.exe	82

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_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.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
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	kcubarcj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4576 wrote to memory of 3616	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	83
PID 4576 wrote to memory of 3616	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	83
PID 4576 wrote to memory of 3616	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	83
PID 4576 wrote to memory of 1412	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	85
PID 4576 wrote to memory of 1412	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	85
PID 4576 wrote to memory of 1412	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	85
PID 4576 wrote to memory of 3744	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	87
PID 4576 wrote to memory of 3744	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	87
PID 4576 wrote to memory of 3744	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	87
PID 4576 wrote to memory of 2204	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	89
PID 4576 wrote to memory of 2204	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	89
PID 4576 wrote to memory of 2204	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	89
PID 4576 wrote to memory of 4044	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	92
PID 4576 wrote to memory of 4044	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	92
PID 4576 wrote to memory of 4044	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	92
PID 4576 wrote to memory of 1708	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	95
PID 4576 wrote to memory of 1708	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	95
PID 4576 wrote to memory of 1708	4576	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	95
PID 1796 wrote to memory of 1904	1796	kcubarcj.exe	98
PID 1796 wrote to memory of 1904	1796	kcubarcj.exe	98
PID 1796 wrote to memory of 1904	1796	kcubarcj.exe	98
PID 1796 wrote to memory of 1904	1796	kcubarcj.exe	98
PID 1796 wrote to memory of 1904	1796	kcubarcj.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eheqnabs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kcubarcj.exe" C:\Windows\SysWOW64\eheqnabs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1412
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eheqnabs binPath= "C:\Windows\SysWOW64\eheqnabs\kcubarcj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eheqnabs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eheqnabs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4044
- 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:1708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4576 -s 1196
  2⤵
  - Program crash
  PID:2880

C:\Windows\SysWOW64\eheqnabs\kcubarcj.exe
C:\Windows\SysWOW64\eheqnabs\kcubarcj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1796
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1796 -s 532
  2⤵
  - Program crash
  PID:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1796 -ip 1796
1⤵
PID:3356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4576 -ip 4576
1⤵
PID:4168

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\kcubarcj.exe

Filesize
14.0MB

MD5
b15cc96dae0682f41567a52c084a85a3

SHA1
58ae3286e9b8b0b7da2c9ff495b643cc139d5b95

SHA256
5c9fd1ae4ee93a6310c0a8d64115c5d2b257c5fc7fd392736d29923466420757

SHA512
50048698a131c28dec1166d15217b809a9c055b6fd08a4505c6f6279bed91c224fe1804c3a47400dfab23678a7229a3ff0edaedc56092713190f567fd78d21f2

Download Submit
memory/1796-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1796-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1904-10-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download
memory/1904-7-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download
memory/1904-17-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download
memory/1904-18-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download
memory/1904-19-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download
memory/4576-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4576-0-0x0000000002030000-0x000000000203D000-memory.dmp

Filesize
52KB

Download
memory/4576-1-0x0000000002040000-0x0000000002053000-memory.dmp

Filesize
76KB

Download
memory/4576-14-0x0000000002030000-0x000000000203D000-memory.dmp

Filesize
52KB

Download
memory/4576-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4576-15-0x0000000002040000-0x0000000002053000-memory.dmp

Filesize
76KB

Download
memory/4576-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads