tofsee | e91b0a17ead2c83c4fae8dbf4afbd30afce8d7686b5f2ed1c0790b166878e2d2

General

Target

768226535e8829a6a546849b0face680_JaffaCakes118.exe
Size

12.9MB
MD5

768226535e8829a6a546849b0face680
SHA1

e212fc31a3ba718726c487d9a29adfe828cc95fa
SHA256

e91b0a17ead2c83c4fae8dbf4afbd30afce8d7686b5f2ed1c0790b166878e2d2
SHA512

b4bb4c569e25d7ee19cba60a3b62ff632107dfdeb4b2e2af6816f8fd55a43167bf6082d8491d2338ecb1257f2c48ff3511211cfec807935560a7d666e90fb12a
SSDEEP

12288:PZlC6v/5oQU6buXH53333333333333333333333333333333333333333333333X:PbjvluXH

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
4696	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\jbwtysly\ImagePath = "C:\\Windows\\SysWOW64\\jbwtysly\\ecrdxteu.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	768226535e8829a6a546849b0face680_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4900	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
592	ecrdxteu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 592 set thread context of 4900	592	ecrdxteu.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
3448	sc.exe
2728	sc.exe
1156	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
2924	3912	WerFault.exe	85
1912	592	WerFault.exe	99

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	768226535e8829a6a546849b0face680_JaffaCakes118.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	ecrdxteu.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3912 wrote to memory of 1908	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	89
PID 3912 wrote to memory of 1908	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	89
PID 3912 wrote to memory of 1908	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	89
PID 3912 wrote to memory of 468	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	91
PID 3912 wrote to memory of 468	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	91
PID 3912 wrote to memory of 468	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	91
PID 3912 wrote to memory of 2728	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	93
PID 3912 wrote to memory of 2728	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	93
PID 3912 wrote to memory of 2728	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	93
PID 3912 wrote to memory of 1156	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	95
PID 3912 wrote to memory of 1156	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	95
PID 3912 wrote to memory of 1156	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	95
PID 3912 wrote to memory of 3448	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	97
PID 3912 wrote to memory of 3448	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	97
PID 3912 wrote to memory of 3448	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	97
PID 3912 wrote to memory of 4696	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	100
PID 3912 wrote to memory of 4696	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	100
PID 3912 wrote to memory of 4696	3912	768226535e8829a6a546849b0face680_JaffaCakes118.exe	100
PID 592 wrote to memory of 4900	592	ecrdxteu.exe	105
PID 592 wrote to memory of 4900	592	ecrdxteu.exe	105
PID 592 wrote to memory of 4900	592	ecrdxteu.exe	105
PID 592 wrote to memory of 4900	592	ecrdxteu.exe	105
PID 592 wrote to memory of 4900	592	ecrdxteu.exe	105

C:\Users\Admin\AppData\Local\Temp\768226535e8829a6a546849b0face680_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\768226535e8829a6a546849b0face680_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3912
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jbwtysly\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1908
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ecrdxteu.exe" C:\Windows\SysWOW64\jbwtysly\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jbwtysly binPath= "C:\Windows\SysWOW64\jbwtysly\ecrdxteu.exe /d\"C:\Users\Admin\AppData\Local\Temp\768226535e8829a6a546849b0face680_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jbwtysly "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jbwtysly
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3448
- 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:4696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3912 -s 672
  2⤵
  - Program crash
  PID:2924

C:\Windows\SysWOW64\jbwtysly\ecrdxteu.exe
C:\Windows\SysWOW64\jbwtysly\ecrdxteu.exe /d"C:\Users\Admin\AppData\Local\Temp\768226535e8829a6a546849b0face680_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:592
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 592 -s 512
  2⤵
  - Program crash
  PID:1912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3912 -ip 3912
1⤵
PID:2484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 592 -ip 592
1⤵
PID:4456

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\ecrdxteu.exe

Filesize
14.6MB

MD5
6eeac4b3ee667335f28351a1dbf98863

SHA1
2b62afac72b6aa31dd16be2de0ced1cb7aafc147

SHA256
6c384ebfa831765d92febcc91bbd15365056bb819316f40ed8952beb502ae6c2

SHA512
ed4626816b5c0ec6d4cc98b51e9d47a2ea983d06f555c43e88d906ec26e171a935618677f9f59c9b1ac5d784dc7c027b96e9ca9ed7ac382a1c468fd4c6b18a76

Download Submit
memory/592-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/592-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/592-11-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/592-19-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3912-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3912-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/3912-9-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/3912-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3912-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3912-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/4900-16-0x0000000000DC0000-0x0000000000DD5000-memory.dmp

Filesize
84KB

Download
memory/4900-14-0x0000000000DC0000-0x0000000000DD5000-memory.dmp

Filesize
84KB

Download
memory/4900-17-0x0000000000DC0000-0x0000000000DD5000-memory.dmp

Filesize
84KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads