tofsee | ac2b5f67e079686ab6ee26fa820836d8da7317ecc0837556c1efccd08013bedc

General

Target

2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe
Size

12.0MB
MD5

2e316d198cb4372d12133d6fdda7774f
SHA1

332966886416afa54689bf0c0641d43465103e51
SHA256

ac2b5f67e079686ab6ee26fa820836d8da7317ecc0837556c1efccd08013bedc
SHA512

9169bbf067b75397a140371fc5b32b2c61ed6788eddbef1f41d377e1725440b5e312d1015a249ce8f999b91f0c3f8b5d90834de2ce72922471661248c5fa0658
SSDEEP

49152:RJkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk8:

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
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

Processes:

netsh.exe

pid process

4580 netsh.exe

pid	process
4580	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\lwntsoyb\ImagePath = "C:\\Windows\\SysWOW64\\lwntsoyb\\tivrdcvh.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

Processes:

2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2700 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tivrdcvh.exe

pid process

2372 tivrdcvh.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tivrdcvh.exe

description pid process target process

PID 2372 set thread context of 2700 2372 tivrdcvh.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2968 sc.exe
4968 sc.exe
736 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2700	svchost.exe

pid	process
2372	tivrdcvh.exe

description	pid	process	target process
PID 2372 set thread context of 2700	2372	tivrdcvh.exe	svchost.exe

pid	process
2968	sc.exe
4968	sc.exe
736	sc.exe

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

Processes:

netsh.exe

description	ioc	process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

864 2372 WerFault.exe tivrdcvh.exe
3680 804 WerFault.exe 2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe

pid	pid_target	process	target process
864	2372	WerFault.exe	tivrdcvh.exe
3680	804	WerFault.exe	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe

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

Processes:

cmd.exesc.exesc.exetivrdcvh.exenetsh.exesvchost.exe2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.execmd.exesc.exe

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tivrdcvh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exetivrdcvh.exe

description	pid	process	target process
PID 804 wrote to memory of 1592	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	cmd.exe
PID 804 wrote to memory of 1592	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	cmd.exe
PID 804 wrote to memory of 1592	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	cmd.exe
PID 804 wrote to memory of 5012	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	cmd.exe
PID 804 wrote to memory of 5012	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	cmd.exe
PID 804 wrote to memory of 5012	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	cmd.exe
PID 804 wrote to memory of 2968	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	sc.exe
PID 804 wrote to memory of 2968	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	sc.exe
PID 804 wrote to memory of 2968	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	sc.exe
PID 804 wrote to memory of 4968	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	sc.exe
PID 804 wrote to memory of 4968	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	sc.exe
PID 804 wrote to memory of 4968	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	sc.exe
PID 804 wrote to memory of 736	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	sc.exe
PID 804 wrote to memory of 736	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	sc.exe
PID 804 wrote to memory of 736	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	sc.exe
PID 2372 wrote to memory of 2700	2372	tivrdcvh.exe	svchost.exe
PID 2372 wrote to memory of 2700	2372	tivrdcvh.exe	svchost.exe
PID 2372 wrote to memory of 2700	2372	tivrdcvh.exe	svchost.exe
PID 2372 wrote to memory of 2700	2372	tivrdcvh.exe	svchost.exe
PID 2372 wrote to memory of 2700	2372	tivrdcvh.exe	svchost.exe
PID 804 wrote to memory of 4580	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	netsh.exe
PID 804 wrote to memory of 4580	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	netsh.exe
PID 804 wrote to memory of 4580	804	2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:804
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lwntsoyb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tivrdcvh.exe" C:\Windows\SysWOW64\lwntsoyb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lwntsoyb binPath= "C:\Windows\SysWOW64\lwntsoyb\tivrdcvh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lwntsoyb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lwntsoyb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:736
- 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:4580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 804 -s 592
  2⤵
  - Program crash
  PID:3680

C:\Windows\SysWOW64\lwntsoyb\tivrdcvh.exe
C:\Windows\SysWOW64\lwntsoyb\tivrdcvh.exe /d"C:\Users\Admin\AppData\Local\Temp\2e316d198cb4372d12133d6fdda7774f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 528
  2⤵
  - Program crash
  PID:864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 804 -ip 804
1⤵
PID:1432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2372 -ip 2372
1⤵
PID:3000

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\tivrdcvh.exe

Filesize
10.2MB

MD5
054649c041aad9b0354acdd185030dfa

SHA1
5a097664a924aea2441651dcf7429889c4fa0c68

SHA256
5a2e67bd96dffe0ea97f0b494d9905485939d4a5723f11c75bd64bf9543e7379

SHA512
4badf96de010c51c6038c603404aeac6cbf3d8f1e65719d40079b960e27460165cf815fecf846a9e26b117feeb949d5d0c45404d0808150510c1853d0a66381d

Download Submit
memory/804-1-0x0000000002210000-0x0000000002310000-memory.dmp

Filesize
1024KB

Download
memory/804-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/804-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/804-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/804-12-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/804-11-0x0000000000400000-0x0000000002145000-memory.dmp

Filesize
29.3MB

Download
memory/2372-10-0x0000000000400000-0x0000000002145000-memory.dmp

Filesize
29.3MB

Download
memory/2700-8-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/2700-14-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/2700-15-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads