tofsee | e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd

General

Target

JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe
Size

284KB
MD5

75a99af8b7adc1c07232691950cad2e7
SHA1

b3cef4475010055358938a59e12c0ada3d132848
SHA256

e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd
SHA512

1f35004baa00e4f3cc07102adc1315d27ba69a2f3560d09dc040cf7eb332d2497d4198d5b9df7996f752f799892e900d486a85b01a3c47bd421f31ae8d730d56
SSDEEP

3072:yedoQKDodNgQQ/rHaTbw5VUXv3x0o3/yc7QkNaXurRq3+R7H8gF2yMzuFUkfEVYE:j6QKIBQEbw3wv/wGw+R7c2nM6F4VD

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
1392	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\hpitlcuu\ImagePath = "C:\\Windows\\SysWOW64\\hpitlcuu\\oezlfrvn.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_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe

Deletes itself 1 IoCs

pid	Process
3232	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4920	oezlfrvn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4920 set thread context of 3232	4920	oezlfrvn.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3748	sc.exe
3972	sc.exe
2176	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
4704	3408	WerFault.exe	82
1648	4920	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oezlfrvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.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	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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 4736	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	83
PID 3408 wrote to memory of 4736	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	83
PID 3408 wrote to memory of 4736	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	83
PID 3408 wrote to memory of 368	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	85
PID 3408 wrote to memory of 368	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	85
PID 3408 wrote to memory of 368	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	85
PID 3408 wrote to memory of 3748	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	87
PID 3408 wrote to memory of 3748	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	87
PID 3408 wrote to memory of 3748	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	87
PID 3408 wrote to memory of 3972	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	89
PID 3408 wrote to memory of 3972	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	89
PID 3408 wrote to memory of 3972	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	89
PID 3408 wrote to memory of 2176	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	92
PID 3408 wrote to memory of 2176	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	92
PID 3408 wrote to memory of 2176	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	92
PID 3408 wrote to memory of 1392	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	95
PID 3408 wrote to memory of 1392	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	95
PID 3408 wrote to memory of 1392	3408	JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe	95
PID 4920 wrote to memory of 3232	4920	oezlfrvn.exe	101
PID 4920 wrote to memory of 3232	4920	oezlfrvn.exe	101
PID 4920 wrote to memory of 3232	4920	oezlfrvn.exe	101
PID 4920 wrote to memory of 3232	4920	oezlfrvn.exe	101
PID 4920 wrote to memory of 3232	4920	oezlfrvn.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3408
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hpitlcuu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oezlfrvn.exe" C:\Windows\SysWOW64\hpitlcuu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hpitlcuu binPath= "C:\Windows\SysWOW64\hpitlcuu\oezlfrvn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hpitlcuu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3972
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hpitlcuu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2176
- 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:1392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3408 -s 1044
  2⤵
  - Program crash
  PID:4704

C:\Windows\SysWOW64\hpitlcuu\oezlfrvn.exe
C:\Windows\SysWOW64\hpitlcuu\oezlfrvn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8fd4d782183a9590a96686523c41f92639134637d61b570684b6129820b97fd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4920
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3232
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4920 -s 512
  2⤵
  - Program crash
  PID:1648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3408 -ip 3408
1⤵
PID:3112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4920 -ip 4920
1⤵
PID:5116

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\oezlfrvn.exe

Filesize
10.5MB

MD5
ba96bf2efbe9ff850dcdc9ff5b98ca4d

SHA1
32aa69ec57e62436e5abffdddf3ad5229bedd7b3

SHA256
3a0a592265afce7746d8da458c3c7fd68870171cf3aa7a9c8989d0be68a60627

SHA512
4821118f49e43af07580bb99193492399c5559fa2dc0219fb1d061e20f8caa5556075de9952e173f490ffcabc0a70f5a01f3cb7096c93724bb60d2990727eaa4

Download Submit
memory/3232-11-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/3232-13-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/3232-14-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/3408-1-0x0000000002C40000-0x0000000002D40000-memory.dmp

Filesize
1024KB

Download
memory/3408-2-0x0000000002BD0000-0x0000000002BE3000-memory.dmp

Filesize
76KB

Download
memory/3408-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3408-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3408-9-0x0000000002BD0000-0x0000000002BE3000-memory.dmp

Filesize
76KB

Download
memory/3408-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/4920-15-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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