tofsee | 21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d

General

Target

JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe
Size

289KB
MD5

fc3b7de2e1349e3132fbbc37ff6c265d
SHA1

acd8bb57f4297c422a531a13172ae0a89637d4ec
SHA256

21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d
SHA512

95c7c767abc7383c67fdb6c84a05c5b6baabe74f71c13c1cd0b4c11bf62c6157fdff1a3867d49162d89ef6a30c20dae1b76781ba2897ccf2f93a1a70ecd16422
SSDEEP

6144:eRpABz+P8behNzsXqJL6F6EkOOhxxdeTr/ekI:DBz+U0xL6Fdizxd6L

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
5004	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\qevecujo\ImagePath = "C:\\Windows\\SysWOW64\\qevecujo\\szxiniwk.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_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe

Deletes itself 1 IoCs

pid	Process
3988	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3688	szxiniwk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3688 set thread context of 3988	3688	szxiniwk.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4612	sc.exe
3800	sc.exe
3408	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 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

pid	pid_target	Process	procid_target
4292	760	WerFault.exe	82
3760	3688	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	szxiniwk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe
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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 760 wrote to memory of 4996	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	83
PID 760 wrote to memory of 4996	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	83
PID 760 wrote to memory of 4996	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	83
PID 760 wrote to memory of 1588	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	85
PID 760 wrote to memory of 1588	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	85
PID 760 wrote to memory of 1588	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	85
PID 760 wrote to memory of 4612	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	88
PID 760 wrote to memory of 4612	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	88
PID 760 wrote to memory of 4612	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	88
PID 760 wrote to memory of 3800	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	90
PID 760 wrote to memory of 3800	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	90
PID 760 wrote to memory of 3800	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	90
PID 760 wrote to memory of 3408	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	92
PID 760 wrote to memory of 3408	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	92
PID 760 wrote to memory of 3408	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	92
PID 760 wrote to memory of 5004	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	95
PID 760 wrote to memory of 5004	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	95
PID 760 wrote to memory of 5004	760	JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe	95
PID 3688 wrote to memory of 3988	3688	szxiniwk.exe	101
PID 3688 wrote to memory of 3988	3688	szxiniwk.exe	101
PID 3688 wrote to memory of 3988	3688	szxiniwk.exe	101
PID 3688 wrote to memory of 3988	3688	szxiniwk.exe	101
PID 3688 wrote to memory of 3988	3688	szxiniwk.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qevecujo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\szxiniwk.exe" C:\Windows\SysWOW64\qevecujo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qevecujo binPath= "C:\Windows\SysWOW64\qevecujo\szxiniwk.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qevecujo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qevecujo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3408
- 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:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 760 -s 1036
  2⤵
  - Program crash
  PID:4292

C:\Windows\SysWOW64\qevecujo\szxiniwk.exe
C:\Windows\SysWOW64\qevecujo\szxiniwk.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_21fa4d730a137bc1b96e8cb8a175e737e7d6ff3ab3eb2b068f9a3437508aed1d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3688
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3688 -s 528
  2⤵
  - Program crash
  PID:3760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 760 -ip 760
1⤵
PID:4184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3688 -ip 3688
1⤵
PID:3900

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\szxiniwk.exe

Filesize
14.6MB

MD5
b4f8ba66c6be32d95520c6152d81788d

SHA1
89768a8ea8ad339e599dc5f2a65606a0a2494038

SHA256
e496be749f58ab3d1ad93647e35a6c2b8c317683eed882ea5c25ef649fc9c85c

SHA512
34e383fb317132ac952ffec500e7673a30f2d7cea85465530c9dc225405adffa298a1eba15fc81b2aab86f79016af46cae42ed6f61f7431ca5543b423374ab84

Download Submit
memory/760-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/760-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/760-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/760-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/760-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/760-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3688-12-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3688-11-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3688-13-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3688-18-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3988-14-0x0000000000180000-0x0000000000195000-memory.dmp

Filesize
84KB

Download
memory/3988-16-0x0000000000180000-0x0000000000195000-memory.dmp

Filesize
84KB

Download
memory/3988-17-0x0000000000180000-0x0000000000195000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads