tofsee | 2752e686bece3bcbed58f43149fb9432050ec5912a23a9b5223b5b28bfa06c5c

General

Target

JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe
Size

14.5MB
MD5

2ed4d294c9be6a8a2dec9f2c818e23e8
SHA1

51abe63d2c568714126dfc49ccf213998fa49882
SHA256

2752e686bece3bcbed58f43149fb9432050ec5912a23a9b5223b5b28bfa06c5c
SHA512

a0aa05c09d8b278c2abca570f8c9ccfadd8a14bb8675dbfdbf43547bf67a12e31ddbaf44bdc0bed2039cab69973ccfd058e674da14fa03f88f53bc1486dec4ba
SSDEEP

6144:fSP2GmiErAKEjgoUYRxiPnkIW2p6/hR6bPz/9hniF:mdEkf5UmiE2pagL9hi

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
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
1428	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\ckskrbxy\ImagePath = "C:\\Windows\\SysWOW64\\ckskrbxy\\pjflwgye.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe

Deletes itself 1 IoCs

pid	Process
2548	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
452	pjflwgye.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 452 set thread context of 2548	452	pjflwgye.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3580	sc.exe
4752	sc.exe
1816	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
32	4472	WerFault.exe	81
2780	452	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	cmd.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	pjflwgye.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4472 wrote to memory of 1628	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	82
PID 4472 wrote to memory of 1628	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	82
PID 4472 wrote to memory of 1628	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	82
PID 4472 wrote to memory of 4088	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	84
PID 4472 wrote to memory of 4088	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	84
PID 4472 wrote to memory of 4088	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	84
PID 4472 wrote to memory of 4752	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	86
PID 4472 wrote to memory of 4752	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	86
PID 4472 wrote to memory of 4752	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	86
PID 4472 wrote to memory of 1816	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	88
PID 4472 wrote to memory of 1816	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	88
PID 4472 wrote to memory of 1816	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	88
PID 4472 wrote to memory of 3580	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	90
PID 4472 wrote to memory of 3580	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	90
PID 4472 wrote to memory of 3580	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	90
PID 4472 wrote to memory of 1428	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	93
PID 4472 wrote to memory of 1428	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	93
PID 4472 wrote to memory of 1428	4472	JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe	93
PID 452 wrote to memory of 2548	452	pjflwgye.exe	98
PID 452 wrote to memory of 2548	452	pjflwgye.exe	98
PID 452 wrote to memory of 2548	452	pjflwgye.exe	98
PID 452 wrote to memory of 2548	452	pjflwgye.exe	98
PID 452 wrote to memory of 2548	452	pjflwgye.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4472
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ckskrbxy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pjflwgye.exe" C:\Windows\SysWOW64\ckskrbxy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ckskrbxy binPath= "C:\Windows\SysWOW64\ckskrbxy\pjflwgye.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ckskrbxy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ckskrbxy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3580
- 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:1428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4472 -s 736
  2⤵
  - Program crash
  PID:32

C:\Windows\SysWOW64\ckskrbxy\pjflwgye.exe
C:\Windows\SysWOW64\ckskrbxy\pjflwgye.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2ed4d294c9be6a8a2dec9f2c818e23e8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:452
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 452 -s 516
  2⤵
  - Program crash
  PID:2780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4472 -ip 4472
1⤵
PID:1656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 452 -ip 452
1⤵
PID:2108

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\pjflwgye.exe

Filesize
11.8MB

MD5
2d262b3961e31b02e7b237428bfeefcf

SHA1
9b9afcef5fb08994360cef49028405224b570f8c

SHA256
468d5726154683772c4b6a95f782977805a5de2a903af2a6f55d4aa634e7d1e4

SHA512
b873bded5c82dc18d4c5d1428f4dcbc72ef71f11f74d2c75c56b80c67b4e4c4d773792df3d0d8c790a4ad4a0e6e74b052e2618bfbb1e110f484ff8442d420c01

Download Submit
memory/452-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/452-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/452-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/452-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2548-14-0x0000000001020000-0x0000000001035000-memory.dmp

Filesize
84KB

Download
memory/2548-16-0x0000000001020000-0x0000000001035000-memory.dmp

Filesize
84KB

Download
memory/2548-17-0x0000000001020000-0x0000000001035000-memory.dmp

Filesize
84KB

Download
memory/4472-8-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4472-9-0x00000000008A0000-0x00000000008B3000-memory.dmp

Filesize
76KB

Download
memory/4472-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4472-1-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download
memory/4472-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4472-2-0x00000000008A0000-0x00000000008B3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads