tofsee | a294da462dcf90513898a1ab59be2626addeb28f9c639b57d5c0d2c1e1b975d9

General

Target

efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe
Size

13.3MB
MD5

efdd33d29a37ccda51a133f98616f2c1
SHA1

d445a4f5c8fc22bac4bb4f304b96f021c9947152
SHA256

a294da462dcf90513898a1ab59be2626addeb28f9c639b57d5c0d2c1e1b975d9
SHA512

75c111fd39b5df64a131ffad85e60b7c54737a78122007dc78bdf24556a290bffa524f665db8dc2b543982cf4ecf4e97a2d8846906d69f276a3f9075eb485b2a
SSDEEP

49152:P8yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyW:P

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.ru

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
5032	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\mtrxxywk\ImagePath = "C:\\Windows\\SysWOW64\\mtrxxywk\\tqnlxixl.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
624	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4688	tqnlxixl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4688 set thread context of 624	4688	tqnlxixl.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1328	sc.exe
2976	sc.exe
2012	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
2600	4352	WerFault.exe	83
1840	4688	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	cmd.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tqnlxixl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	efdd33d29a37ccda51a133f98616f2c1_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 4352 wrote to memory of 4080	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	84
PID 4352 wrote to memory of 4080	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	84
PID 4352 wrote to memory of 4080	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	84
PID 4352 wrote to memory of 3880	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	86
PID 4352 wrote to memory of 3880	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	86
PID 4352 wrote to memory of 3880	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	86
PID 4352 wrote to memory of 1328	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	88
PID 4352 wrote to memory of 1328	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	88
PID 4352 wrote to memory of 1328	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	88
PID 4352 wrote to memory of 2976	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	90
PID 4352 wrote to memory of 2976	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	90
PID 4352 wrote to memory of 2976	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	90
PID 4352 wrote to memory of 2012	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	92
PID 4352 wrote to memory of 2012	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	92
PID 4352 wrote to memory of 2012	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	92
PID 4352 wrote to memory of 5032	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	95
PID 4352 wrote to memory of 5032	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	95
PID 4352 wrote to memory of 5032	4352	efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe	95
PID 4688 wrote to memory of 624	4688	tqnlxixl.exe	100
PID 4688 wrote to memory of 624	4688	tqnlxixl.exe	100
PID 4688 wrote to memory of 624	4688	tqnlxixl.exe	100
PID 4688 wrote to memory of 624	4688	tqnlxixl.exe	100
PID 4688 wrote to memory of 624	4688	tqnlxixl.exe	100

C:\Users\Admin\AppData\Local\Temp\efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4352
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mtrxxywk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tqnlxixl.exe" C:\Windows\SysWOW64\mtrxxywk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mtrxxywk binPath= "C:\Windows\SysWOW64\mtrxxywk\tqnlxixl.exe /d\"C:\Users\Admin\AppData\Local\Temp\efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1328
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mtrxxywk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mtrxxywk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2012
- 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:5032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4352 -s 1192
  2⤵
  - Program crash
  PID:2600

C:\Windows\SysWOW64\mtrxxywk\tqnlxixl.exe
C:\Windows\SysWOW64\mtrxxywk\tqnlxixl.exe /d"C:\Users\Admin\AppData\Local\Temp\efdd33d29a37ccda51a133f98616f2c1_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4688
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4688 -s 512
  2⤵
  - Program crash
  PID:1840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4352 -ip 4352
1⤵
PID:3948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4688 -ip 4688
1⤵
PID:1552

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tqnlxixl.exe

Filesize
14.6MB

MD5
adf8d253a6d6fb866ec93d4dfab10faf

SHA1
cabdec402bca3949eefb589425eead93911a2705

SHA256
82be83d9b3af2bbfff7a189b6282f9025cc5ff53c6abcf18b045b6f82c1b952d

SHA512
e92f57d5cd2bfe657a6e59076a44b2ec85c2cd2aca854e85ae7ea6b1beaa08ea8240b09b9b4e1dd5833a3a04a8e53400ee34d894c8b1474010b491e34c7f66b5

Download Submit
memory/624-11-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/624-13-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/624-14-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/4352-1-0x0000000000B30000-0x0000000000C30000-memory.dmp

Filesize
1024KB

Download
memory/4352-2-0x0000000002630000-0x0000000002643000-memory.dmp

Filesize
76KB

Download
memory/4352-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4352-7-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/4352-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4352-8-0x0000000002630000-0x0000000002643000-memory.dmp

Filesize
76KB

Download
memory/4688-15-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads