tofsee | d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4

General

Target

JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe
Size

197KB
MD5

842fa585d481765c7b4aa288052dde34
SHA1

a096a35996fed417b8fea7b1308ed18dab39e20d
SHA256

d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4
SHA512

f7e3eacbaf6191eebd1fefe3bc528b016817e0b0028eb0b8409b9b3ae61a78b7a6a56ba27115127af904176009e58526eff66ee88ae5730f9bb1923cfd865d53
SSDEEP

3072:2e68IejDacBIeXDOCzDufIIAMgiU8XKPqfP2IjBvKB6klGfLIQVNWBz:2e2evacGea6qfvvKB6k8Txql

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
1104	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\fvgzpihy\ImagePath = "C:\\Windows\\SysWOW64\\fvgzpihy\\jqozeznb.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_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe

Deletes itself 1 IoCs

pid	Process
4676	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2988	jqozeznb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2988 set thread context of 4676	2988	jqozeznb.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
2496	sc.exe
4672	sc.exe
1168	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

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	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	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.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	jqozeznb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3656 wrote to memory of 1960	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	85
PID 3656 wrote to memory of 1960	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	85
PID 3656 wrote to memory of 1960	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	85
PID 3656 wrote to memory of 1452	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	88
PID 3656 wrote to memory of 1452	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	88
PID 3656 wrote to memory of 1452	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	88
PID 3656 wrote to memory of 2496	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	90
PID 3656 wrote to memory of 2496	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	90
PID 3656 wrote to memory of 2496	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	90
PID 3656 wrote to memory of 4672	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	92
PID 3656 wrote to memory of 4672	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	92
PID 3656 wrote to memory of 4672	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	92
PID 3656 wrote to memory of 1168	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	94
PID 3656 wrote to memory of 1168	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	94
PID 3656 wrote to memory of 1168	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	94
PID 3656 wrote to memory of 1104	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	97
PID 3656 wrote to memory of 1104	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	97
PID 3656 wrote to memory of 1104	3656	JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe	97
PID 2988 wrote to memory of 4676	2988	jqozeznb.exe	99
PID 2988 wrote to memory of 4676	2988	jqozeznb.exe	99
PID 2988 wrote to memory of 4676	2988	jqozeznb.exe	99
PID 2988 wrote to memory of 4676	2988	jqozeznb.exe	99
PID 2988 wrote to memory of 4676	2988	jqozeznb.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3656
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fvgzpihy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jqozeznb.exe" C:\Windows\SysWOW64\fvgzpihy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fvgzpihy binPath= "C:\Windows\SysWOW64\fvgzpihy\jqozeznb.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fvgzpihy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fvgzpihy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1168
- 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:1104

C:\Windows\SysWOW64\fvgzpihy\jqozeznb.exe
C:\Windows\SysWOW64\fvgzpihy\jqozeznb.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d50965c4bd00566509a4a5a2cd6fcabd669671292a969eaa2001235f8b071ab4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4676

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\jqozeznb.exe

Filesize
11.0MB

MD5
d02b47170d80c2e36b65f54f7bac1eff

SHA1
d7d01693177e25841414b9112e91b8279749d9b1

SHA256
286a86c6b9628273c48dd8abe6b965392ab7d9ade5d5477cd7da6fe507170507

SHA512
237a2e3fd4cca83e290936845c3a97a8f8df62d7a7ed687300a1422b40577ee1e76e4f3271f6945f8aed1365ef6b06d574e71b09d009ef8be1626e2408b2dfe6

Download Submit
memory/2988-12-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2988-11-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2988-13-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2988-18-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3656-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3656-1-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/3656-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3656-9-0x0000000000760000-0x0000000000773000-memory.dmp

Filesize
76KB

Download
memory/3656-8-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3656-2-0x0000000000760000-0x0000000000773000-memory.dmp

Filesize
76KB

Download
memory/4676-14-0x0000000000ED0000-0x0000000000EE5000-memory.dmp

Filesize
84KB

Download
memory/4676-16-0x0000000000ED0000-0x0000000000EE5000-memory.dmp

Filesize
84KB

Download
memory/4676-19-0x0000000000ED0000-0x0000000000EE5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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