tofsee | 101326e6957a09dda1fd975d860f1ea11f99ac803d2dd75b30e469c52c9de4d7

General

Target

JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe
Size

14.8MB
MD5

604d7dab179c911f9f9360064e3bfd90
SHA1

b7e135fef6b808b30175fc94d9f3b017d5f7a6f3
SHA256

101326e6957a09dda1fd975d860f1ea11f99ac803d2dd75b30e469c52c9de4d7
SHA512

d2ab2f84db4781005ca4018571a74b1353ec16c6baf9c15152d1277be720d20ea714947660bd1cc9cd5e319855f27524e8bcf272aebff0d876e7777b5f8f130a
SSDEEP

49152:WLfRwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww/:WLf

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
4176	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\bvuvwqcy\ImagePath = "C:\\Windows\\SysWOW64\\bvuvwqcy\\jcndolex.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe

Deletes itself 1 IoCs

pid	Process
3124	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1720	jcndolex.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1720 set thread context of 3124	1720	jcndolex.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2784	sc.exe
2480	sc.exe
4708	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 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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4968	5004	WerFault.exe	81
3588	1720	WerFault.exe	92

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.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	jcndolex.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 5004 wrote to memory of 4672	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	82
PID 5004 wrote to memory of 4672	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	82
PID 5004 wrote to memory of 4672	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	82
PID 5004 wrote to memory of 916	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	84
PID 5004 wrote to memory of 916	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	84
PID 5004 wrote to memory of 916	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	84
PID 5004 wrote to memory of 2784	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	86
PID 5004 wrote to memory of 2784	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	86
PID 5004 wrote to memory of 2784	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	86
PID 5004 wrote to memory of 2480	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	88
PID 5004 wrote to memory of 2480	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	88
PID 5004 wrote to memory of 2480	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	88
PID 5004 wrote to memory of 4708	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	90
PID 5004 wrote to memory of 4708	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	90
PID 5004 wrote to memory of 4708	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	90
PID 5004 wrote to memory of 4176	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	93
PID 5004 wrote to memory of 4176	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	93
PID 5004 wrote to memory of 4176	5004	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	93
PID 1720 wrote to memory of 3124	1720	jcndolex.exe	98
PID 1720 wrote to memory of 3124	1720	jcndolex.exe	98
PID 1720 wrote to memory of 3124	1720	jcndolex.exe	98
PID 1720 wrote to memory of 3124	1720	jcndolex.exe	98
PID 1720 wrote to memory of 3124	1720	jcndolex.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bvuvwqcy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jcndolex.exe" C:\Windows\SysWOW64\bvuvwqcy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bvuvwqcy binPath= "C:\Windows\SysWOW64\bvuvwqcy\jcndolex.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bvuvwqcy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bvuvwqcy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4708
- 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:4176
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5004 -s 1044
  2⤵
  - Program crash
  PID:4968

C:\Windows\SysWOW64\bvuvwqcy\jcndolex.exe
C:\Windows\SysWOW64\bvuvwqcy\jcndolex.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1720
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1720 -s 532
  2⤵
  - Program crash
  PID:3588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5004 -ip 5004
1⤵
PID:5112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1720 -ip 1720
1⤵
PID:1476

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\jcndolex.exe

Filesize
13.2MB

MD5
d15c55866ab3f114b449e783e5f9801f

SHA1
a92a068a1011bef0c14c794a7cb53a4ed82d2838

SHA256
a181477409072ac961a8707713a91c73edc9460a33fcaa4af4e9507d56503a4b

SHA512
f18f7cc2e8ccc6d63f4b7d2e00a56a4ee34dbed2bb5016df109945b01d7081a80819bd6f6ee40b3a92e9a349acacb451059d80de3058fd262a54ea2d119c6319

Download Submit
memory/1720-15-0x0000000000400000-0x0000000002DA3000-memory.dmp

Filesize
41.6MB

Download
memory/3124-11-0x0000000000A50000-0x0000000000A65000-memory.dmp

Filesize
84KB

Download
memory/3124-13-0x0000000000A50000-0x0000000000A65000-memory.dmp

Filesize
84KB

Download
memory/3124-14-0x0000000000A50000-0x0000000000A65000-memory.dmp

Filesize
84KB

Download
memory/5004-2-0x0000000004AF0000-0x0000000004B03000-memory.dmp

Filesize
76KB

Download
memory/5004-1-0x0000000003050000-0x0000000003150000-memory.dmp

Filesize
1024KB

Download
memory/5004-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5004-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5004-9-0x0000000004AF0000-0x0000000004B03000-memory.dmp

Filesize
76KB

Download
memory/5004-8-0x0000000000400000-0x0000000002DA3000-memory.dmp

Filesize
41.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads