tofsee | 19c9419bffef0d0af1b7c15b0f067b23dd8e11184773d907dad4a7ec4c18b04c

General

Target

73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe
Size

11.4MB
MD5

73ef66f715ba43148ec31a08ce599632
SHA1

6cef6bcfe4d5b25a51b767915f8c035b0a830eda
SHA256

19c9419bffef0d0af1b7c15b0f067b23dd8e11184773d907dad4a7ec4c18b04c
SHA512

a556c3b1b74c1e07569c4f5b30230fd3c54a30be4576ac993bc6bd37ca879ed99b5fb00616b9fabfba304133e48098717c5de0e772d029decde12ce210601a28
SSDEEP

49152:h88888888888888888888888888888888888888888888888888888888888888w:

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
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
4704	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\oytpixxd\ImagePath = "C:\\Windows\\SysWOW64\\oytpixxd\\dmuslnqq.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	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1968	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3268	dmuslnqq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3268 set thread context of 1968	3268	dmuslnqq.exe	110

Launches sc.exe 3 IoCs

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

pid	Process
2868	sc.exe
4776	sc.exe
4136	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
232	2360	WerFault.exe	83
4336	3268	WerFault.exe	101

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dmuslnqq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 3748	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	87
PID 2360 wrote to memory of 3748	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	87
PID 2360 wrote to memory of 3748	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	87
PID 2360 wrote to memory of 3784	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	90
PID 2360 wrote to memory of 3784	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	90
PID 2360 wrote to memory of 3784	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	90
PID 2360 wrote to memory of 2868	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	94
PID 2360 wrote to memory of 2868	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	94
PID 2360 wrote to memory of 2868	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	94
PID 2360 wrote to memory of 4776	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	96
PID 2360 wrote to memory of 4776	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	96
PID 2360 wrote to memory of 4776	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	96
PID 2360 wrote to memory of 4136	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	99
PID 2360 wrote to memory of 4136	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	99
PID 2360 wrote to memory of 4136	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	99
PID 2360 wrote to memory of 4704	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	103
PID 2360 wrote to memory of 4704	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	103
PID 2360 wrote to memory of 4704	2360	73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe	103
PID 3268 wrote to memory of 1968	3268	dmuslnqq.exe	110
PID 3268 wrote to memory of 1968	3268	dmuslnqq.exe	110
PID 3268 wrote to memory of 1968	3268	dmuslnqq.exe	110
PID 3268 wrote to memory of 1968	3268	dmuslnqq.exe	110
PID 3268 wrote to memory of 1968	3268	dmuslnqq.exe	110

C:\Users\Admin\AppData\Local\Temp\73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oytpixxd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dmuslnqq.exe" C:\Windows\SysWOW64\oytpixxd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oytpixxd binPath= "C:\Windows\SysWOW64\oytpixxd\dmuslnqq.exe /d\"C:\Users\Admin\AppData\Local\Temp\73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oytpixxd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4776
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oytpixxd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4136
- 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:4704
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2360 -s 1036
  2⤵
  - Program crash
  PID:232

C:\Windows\SysWOW64\oytpixxd\dmuslnqq.exe
C:\Windows\SysWOW64\oytpixxd\dmuslnqq.exe /d"C:\Users\Admin\AppData\Local\Temp\73ef66f715ba43148ec31a08ce599632_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3268
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3268 -s 540
  2⤵
  - Program crash
  PID:4336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2360 -ip 2360
1⤵
PID:2148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3268 -ip 3268
1⤵
PID:2800

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\dmuslnqq.exe

Filesize
11.6MB

MD5
cfbe81b1f65ba1356309015e099a903d

SHA1
9ed0e9ea8dd004d8bf598e2c517ee0d5e8ae8639

SHA256
85e9eeca50608281c7abe002df7647b3f255b9b164293aa6c0e63ee401c08eee

SHA512
590296c7c810bcdf5f2f910bd139d15d6b46d7a61d62f07360db2076ea02e6cd3695bcb6d5b7a34406138d9f3e0695352e74147ad0b934ead58a85e51dc9d122

Download Submit
memory/1968-11-0x0000000000DE0000-0x0000000000DF5000-memory.dmp

Filesize
84KB

Download
memory/1968-13-0x0000000000DE0000-0x0000000000DF5000-memory.dmp

Filesize
84KB

Download
memory/1968-14-0x0000000000DE0000-0x0000000000DF5000-memory.dmp

Filesize
84KB

Download
memory/2360-2-0x0000000002DD0000-0x0000000002DE3000-memory.dmp

Filesize
76KB

Download
memory/2360-1-0x0000000002EB0000-0x0000000002FB0000-memory.dmp

Filesize
1024KB

Download
memory/2360-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2360-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2360-9-0x0000000002DD0000-0x0000000002DE3000-memory.dmp

Filesize
76KB

Download
memory/2360-8-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download
memory/3268-15-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads