tofsee | 58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479

General

Target

JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe
Size

286KB
MD5

89e8a1b1e5eec9b15314df6c8232406c
SHA1

7c088ba07bdfef0f3f427cc400ad2237ffc2d331
SHA256

58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479
SHA512

f2d8805adcc2c2b90efcf669323e1f07ba4c4e18d5bdfbb213148447b468c07474692fc20c3d29dc545c63196d433a7d69118aef02781056e8c2b2544bffccf7
SSDEEP

3072:4I9LYEcdxT6FjvfOOlKBFUZHsu0ay/M3Ve2RU1Ujo3RNsPI6MPepmsIm5ejH:40LsP6FjvFlKbyHq6yz3RCIOUZ

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
2824	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\vbqvvkzm\ImagePath = "C:\\Windows\\SysWOW64\\vbqvvkzm\\vkxtfexj.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_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe

Deletes itself 1 IoCs

pid	Process
460	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4852	vkxtfexj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4852 set thread context of 460	4852	vkxtfexj.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4836	sc.exe
3240	sc.exe
4320	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
3084	3672	WerFault.exe	82
5000	4852	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	sc.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	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vkxtfexj.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 3652	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	83
PID 3672 wrote to memory of 3652	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	83
PID 3672 wrote to memory of 3652	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	83
PID 3672 wrote to memory of 2212	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	85
PID 3672 wrote to memory of 2212	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	85
PID 3672 wrote to memory of 2212	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	85
PID 3672 wrote to memory of 4836	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	87
PID 3672 wrote to memory of 4836	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	87
PID 3672 wrote to memory of 4836	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	87
PID 3672 wrote to memory of 3240	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	89
PID 3672 wrote to memory of 3240	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	89
PID 3672 wrote to memory of 3240	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	89
PID 3672 wrote to memory of 4320	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	91
PID 3672 wrote to memory of 4320	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	91
PID 3672 wrote to memory of 4320	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	91
PID 3672 wrote to memory of 2824	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	95
PID 3672 wrote to memory of 2824	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	95
PID 3672 wrote to memory of 2824	3672	JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe	95
PID 4852 wrote to memory of 460	4852	vkxtfexj.exe	101
PID 4852 wrote to memory of 460	4852	vkxtfexj.exe	101
PID 4852 wrote to memory of 460	4852	vkxtfexj.exe	101
PID 4852 wrote to memory of 460	4852	vkxtfexj.exe	101
PID 4852 wrote to memory of 460	4852	vkxtfexj.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vbqvvkzm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vkxtfexj.exe" C:\Windows\SysWOW64\vbqvvkzm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vbqvvkzm binPath= "C:\Windows\SysWOW64\vbqvvkzm\vkxtfexj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vbqvvkzm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vbqvvkzm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4320
- 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:2824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 1224
  2⤵
  - Program crash
  PID:3084

C:\Windows\SysWOW64\vbqvvkzm\vkxtfexj.exe
C:\Windows\SysWOW64\vbqvvkzm\vkxtfexj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_58752562c0472e1ca8366acd6edf883e0ad1a3ec78ab97500c64f4f76f50f479.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4852
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4852 -s 556
  2⤵
  - Program crash
  PID:5000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3672 -ip 3672
1⤵
PID:400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4852 -ip 4852
1⤵
PID:4348

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\vkxtfexj.exe

Filesize
12.9MB

MD5
cb604f99a62a95fb3c817e2d7d543d12

SHA1
be9be9994b65773952b796b4ba0f4031a6f87c3a

SHA256
c3bc704e48ed95bef0b5cefe135679263c046c57ff592db57dfa9dbf5220dc6e

SHA512
e97d3faabab58cdd4467c32545810b817be18415f55221b8d662566dc94d4ba8aa66673ae272601ab30c283ba063460814245f33079c0d6a8a27a3eb752c33d5

Download Submit
memory/460-8-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/460-14-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/460-15-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/3672-1-0x0000000002BB0000-0x0000000002CB0000-memory.dmp

Filesize
1024KB

Download
memory/3672-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/3672-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-11-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/3672-10-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/4852-13-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads