tofsee | 57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9

General

Target

JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe
Size

254KB
MD5

613e1a25d4d4a8690d2bce34c6bbc453
SHA1

52b6635de76194a2929e33b04cb222d3ab4085b0
SHA256

57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9
SHA512

e0f0bbe301e59a1e87d4014c1f8d63fd7a13cb6f9e754b5987a5328372e3b3c944e0af511090f523e9947dad85e5a2d89176936b07f2ad245b85bd4666beaf34
SSDEEP

6144:RoDgJvgPtv+zvATOKB7isFXGuYKtsKOmblLBxlfFO:Rq+4Ptv+zobAsFXTrBbRlc

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
2344	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\lyhmvzqz\ImagePath = "C:\\Windows\\SysWOW64\\lyhmvzqz\\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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe

Deletes itself 1 IoCs

pid	Process
4144	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4988	vkxtfexj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4988 set thread context of 4144	4988	vkxtfexj.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4964	sc.exe
2584	sc.exe
4368	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
376	3080	WerFault.exe	83
8	4988	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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vkxtfexj.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3080 wrote to memory of 4608	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	84
PID 3080 wrote to memory of 4608	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	84
PID 3080 wrote to memory of 4608	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	84
PID 3080 wrote to memory of 3852	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	86
PID 3080 wrote to memory of 3852	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	86
PID 3080 wrote to memory of 3852	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	86
PID 3080 wrote to memory of 4964	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	88
PID 3080 wrote to memory of 4964	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	88
PID 3080 wrote to memory of 4964	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	88
PID 3080 wrote to memory of 2584	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	90
PID 3080 wrote to memory of 2584	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	90
PID 3080 wrote to memory of 2584	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	90
PID 3080 wrote to memory of 4368	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	92
PID 3080 wrote to memory of 4368	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	92
PID 3080 wrote to memory of 4368	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	92
PID 3080 wrote to memory of 2344	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	95
PID 3080 wrote to memory of 2344	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	95
PID 3080 wrote to memory of 2344	3080	JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe	95
PID 4988 wrote to memory of 4144	4988	vkxtfexj.exe	100
PID 4988 wrote to memory of 4144	4988	vkxtfexj.exe	100
PID 4988 wrote to memory of 4144	4988	vkxtfexj.exe	100
PID 4988 wrote to memory of 4144	4988	vkxtfexj.exe	100
PID 4988 wrote to memory of 4144	4988	vkxtfexj.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lyhmvzqz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vkxtfexj.exe" C:\Windows\SysWOW64\lyhmvzqz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lyhmvzqz binPath= "C:\Windows\SysWOW64\lyhmvzqz\vkxtfexj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lyhmvzqz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lyhmvzqz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4368
- 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:2344
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3080 -s 1184
  2⤵
  - Program crash
  PID:376

C:\Windows\SysWOW64\lyhmvzqz\vkxtfexj.exe
C:\Windows\SysWOW64\lyhmvzqz\vkxtfexj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57c95a2c8115f5190662591b71bd5ef04af79412a43b00e3b1b3e964a0dabeb9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4144
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 516
  2⤵
  - Program crash
  PID:8

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3080 -ip 3080
1⤵
PID:5048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4988 -ip 4988
1⤵
PID:1424

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
12.8MB

MD5
558545f708ebb5e99b77ab341ca3cf90

SHA1
f06f7806c814f69e8ffccdcfcb5c45794aa895d0

SHA256
074c9663d9524e411cf891a3e7461b18d4e514b205b20080c4202c58099e016b

SHA512
236de8f20825530c341a28e39181c9102d0922d2abe411c3fc22d0af574883986e6e3fd08cde48cab341147e9818513123f303802d6844e730c26d65fab6d7b3

Download Submit
memory/3080-9-0x00000000009E0000-0x00000000009F3000-memory.dmp

Filesize
76KB

Download
memory/3080-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3080-2-0x00000000009E0000-0x00000000009F3000-memory.dmp

Filesize
76KB

Download
memory/3080-8-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/3080-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3080-1-0x00000000008E0000-0x00000000009E0000-memory.dmp

Filesize
1024KB

Download
memory/4144-15-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/4144-13-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/4144-16-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/4988-11-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/4988-12-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/4988-17-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads