tofsee | 6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c

General

Target

JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe
Size

285KB
MD5

5abd029a5ad6a47b553bd7cbc48c0d77
SHA1

c1a7a3fcfb197c1f7bb03e642c84d1208c111b6e
SHA256

6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c
SHA512

22d8116dc12a7dd2be6cbf8cd8d0482723e9f68b4ba03050e7c5995dd639c4acf7e534ea8c408b5075a239d29ee2690e88f624a93d17aab714f0677c890069f8
SSDEEP

3072:d1nOYAZsDFRRvGyphu1eB9jyb1H2Ab20AyilOvXjWZ1HWiSwgrXHfN8lLJ9w12ks:d1ORZsh21ePWxH2nWqZ1HAHl8lLJ9w/

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
3952	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\pcnnbkoh\ImagePath = "C:\\Windows\\SysWOW64\\pcnnbkoh\\vlllarxp.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe

Deletes itself 1 IoCs

pid	Process
2844	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1568	vlllarxp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1568 set thread context of 2844	1568	vlllarxp.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3800	sc.exe
1524	sc.exe
5096	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
5032	1892	WerFault.exe	82
2272	1568	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	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vlllarxp.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 3568	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	83
PID 1892 wrote to memory of 3568	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	83
PID 1892 wrote to memory of 3568	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	83
PID 1892 wrote to memory of 1924	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	85
PID 1892 wrote to memory of 1924	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	85
PID 1892 wrote to memory of 1924	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	85
PID 1892 wrote to memory of 3800	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	87
PID 1892 wrote to memory of 3800	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	87
PID 1892 wrote to memory of 3800	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	87
PID 1892 wrote to memory of 1524	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	90
PID 1892 wrote to memory of 1524	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	90
PID 1892 wrote to memory of 1524	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	90
PID 1892 wrote to memory of 5096	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	92
PID 1892 wrote to memory of 5096	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	92
PID 1892 wrote to memory of 5096	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	92
PID 1892 wrote to memory of 3952	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	95
PID 1892 wrote to memory of 3952	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	95
PID 1892 wrote to memory of 3952	1892	JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe	95
PID 1568 wrote to memory of 2844	1568	vlllarxp.exe	101
PID 1568 wrote to memory of 2844	1568	vlllarxp.exe	101
PID 1568 wrote to memory of 2844	1568	vlllarxp.exe	101
PID 1568 wrote to memory of 2844	1568	vlllarxp.exe	101
PID 1568 wrote to memory of 2844	1568	vlllarxp.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pcnnbkoh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vlllarxp.exe" C:\Windows\SysWOW64\pcnnbkoh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pcnnbkoh binPath= "C:\Windows\SysWOW64\pcnnbkoh\vlllarxp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pcnnbkoh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1524
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pcnnbkoh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5096
- 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:3952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1892 -s 1276
  2⤵
  - Program crash
  PID:5032

C:\Windows\SysWOW64\pcnnbkoh\vlllarxp.exe
C:\Windows\SysWOW64\pcnnbkoh\vlllarxp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6aeeabc242e4fe99aeef23cedf0444ce06d7ef74a592d7942d6798d4a5978e3c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1568 -s 520
  2⤵
  - Program crash
  PID:2272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1892 -ip 1892
1⤵
PID:3772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1568 -ip 1568
1⤵
PID:3088

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\vlllarxp.exe

Filesize
10.9MB

MD5
a367d0e91ff2adee82e9d645b3849c1e

SHA1
d32722df6993bcf6c02e4e26af0bb68cdbce6238

SHA256
ce203cd67b5ac668e9b11c238dd6734915b2b0d250e7d10ebda104f0265a39a1

SHA512
907afcfdc0b855633054caeb77bdc51c01b75add8dbc8a0e72105fd542480aede96633e8528b47969520f171ab965c28db485aba132f198920ba04f777574542

Download Submit
memory/1568-15-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/1892-1-0x0000000002C30000-0x0000000002D30000-memory.dmp

Filesize
1024KB

Download
memory/1892-2-0x0000000002C10000-0x0000000002C23000-memory.dmp

Filesize
76KB

Download
memory/1892-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1892-9-0x0000000002C10000-0x0000000002C23000-memory.dmp

Filesize
76KB

Download
memory/1892-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1892-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2844-11-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/2844-13-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/2844-14-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads