tofsee | f4debee839654168bc951377f49cb7f3af9cc125168975e3ea1a111f92efb705

General

Target

JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe
Size

11.8MB
MD5

4fece95c5138be47dc60bef4279def37
SHA1

1a8feffb0571f72236b16aeffd5223d0ed2400c4
SHA256

f4debee839654168bc951377f49cb7f3af9cc125168975e3ea1a111f92efb705
SHA512

a4c40a3d0963d7ce1d2b15f67e382964fb26a4f52509f770f7f7f6ceeedaa34050f3a13734f70f5f6eb03beb0b03cbc673ab9d7835855bdbf2f9de970feb81d6
SSDEEP

196608:p4TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTn:p

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
4220	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\acrqrfzo\ImagePath = "C:\\Windows\\SysWOW64\\acrqrfzo\\diewuxj.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe

Deletes itself 1 IoCs

pid	Process
3756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
208	diewuxj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 208 set thread context of 3756	208	diewuxj.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
856	sc.exe
4900	sc.exe
2984	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
2076	2972	WerFault.exe	82
4012	208	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	diewuxj.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 2304	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	83
PID 2972 wrote to memory of 2304	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	83
PID 2972 wrote to memory of 2304	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	83
PID 2972 wrote to memory of 3512	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	85
PID 2972 wrote to memory of 3512	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	85
PID 2972 wrote to memory of 3512	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	85
PID 2972 wrote to memory of 856	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	87
PID 2972 wrote to memory of 856	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	87
PID 2972 wrote to memory of 856	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	87
PID 2972 wrote to memory of 4900	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	89
PID 2972 wrote to memory of 4900	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	89
PID 2972 wrote to memory of 4900	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	89
PID 2972 wrote to memory of 2984	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	92
PID 2972 wrote to memory of 2984	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	92
PID 2972 wrote to memory of 2984	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	92
PID 2972 wrote to memory of 4220	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	95
PID 2972 wrote to memory of 4220	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	95
PID 2972 wrote to memory of 4220	2972	JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe	95
PID 208 wrote to memory of 3756	208	diewuxj.exe	101
PID 208 wrote to memory of 3756	208	diewuxj.exe	101
PID 208 wrote to memory of 3756	208	diewuxj.exe	101
PID 208 wrote to memory of 3756	208	diewuxj.exe	101
PID 208 wrote to memory of 3756	208	diewuxj.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\acrqrfzo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\diewuxj.exe" C:\Windows\SysWOW64\acrqrfzo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3512
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create acrqrfzo binPath= "C:\Windows\SysWOW64\acrqrfzo\diewuxj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description acrqrfzo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start acrqrfzo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2984
- 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:4220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 1036
  2⤵
  - Program crash
  PID:2076

C:\Windows\SysWOW64\acrqrfzo\diewuxj.exe
C:\Windows\SysWOW64\acrqrfzo\diewuxj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4fece95c5138be47dc60bef4279def37.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:208
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 208 -s 532
  2⤵
  - Program crash
  PID:4012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2972 -ip 2972
1⤵
PID:3540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 208 -ip 208
1⤵
PID:980

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\diewuxj.exe

Filesize
13.6MB

MD5
9347acc9edc899e357ab592b4992d3fc

SHA1
ad4fc01f1960812ab469a24bcade3d36be627e27

SHA256
401928ffb4625c66d18b43ce3267793e5d4393041c17cb7612420377e18db98e

SHA512
310564968d4bae3c7ffaf644f69db401cd7ce0758ca3734c3e04f746625280c68a05c606b8580ef10cd7eb523f6bccd7496a09d6b5242150433e88100f3ce75e

Download Submit
memory/208-15-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/208-12-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2972-1-0x0000000000920000-0x0000000000A20000-memory.dmp

Filesize
1024KB

Download
memory/2972-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/2972-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2972-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2972-9-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/2972-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3756-14-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download
memory/3756-11-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download
memory/3756-17-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads