tofsee | 389f1cad58921e8267bdd0ae4c3d7007d6f3ac2f2b83360f57f2d1719d4f1072

General

Target

c51aba749c879901b01541a953fc336e_JaffaCakes118.exe
Size

13.3MB
MD5

c51aba749c879901b01541a953fc336e
SHA1

f50814f5782dfd9b234428d07e687623a68971e3
SHA256

389f1cad58921e8267bdd0ae4c3d7007d6f3ac2f2b83360f57f2d1719d4f1072
SHA512

40e2f62613b368f390ace86f5d83b083e533391b45a6ddc97bb12013f29a2646d2fb2e10c7760132e31d75f457f30559a3179b2fffe1cafa6ba0ba610c6784f6
SSDEEP

49152:AwAKFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFd:Aw

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
2072	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\mkqqmkwz\ImagePath = "C:\\Windows\\SysWOW64\\mkqqmkwz\\aynztpaq.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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1672	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4708	aynztpaq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4708 set thread context of 1672	4708	aynztpaq.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
2252	sc.exe
3160	sc.exe
4792	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
2320	3408	WerFault.exe	83
3040	4708	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	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	aynztpaq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c51aba749c879901b01541a953fc336e_JaffaCakes118.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 540	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	87
PID 3408 wrote to memory of 540	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	87
PID 3408 wrote to memory of 540	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	87
PID 3408 wrote to memory of 1280	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	89
PID 3408 wrote to memory of 1280	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	89
PID 3408 wrote to memory of 1280	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	89
PID 3408 wrote to memory of 2252	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	91
PID 3408 wrote to memory of 2252	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	91
PID 3408 wrote to memory of 2252	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	91
PID 3408 wrote to memory of 3160	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	95
PID 3408 wrote to memory of 3160	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	95
PID 3408 wrote to memory of 3160	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	95
PID 3408 wrote to memory of 4792	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	97
PID 3408 wrote to memory of 4792	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	97
PID 3408 wrote to memory of 4792	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	97
PID 3408 wrote to memory of 2072	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	101
PID 3408 wrote to memory of 2072	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	101
PID 3408 wrote to memory of 2072	3408	c51aba749c879901b01541a953fc336e_JaffaCakes118.exe	101
PID 4708 wrote to memory of 1672	4708	aynztpaq.exe	107
PID 4708 wrote to memory of 1672	4708	aynztpaq.exe	107
PID 4708 wrote to memory of 1672	4708	aynztpaq.exe	107
PID 4708 wrote to memory of 1672	4708	aynztpaq.exe	107
PID 4708 wrote to memory of 1672	4708	aynztpaq.exe	107

C:\Users\Admin\AppData\Local\Temp\c51aba749c879901b01541a953fc336e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c51aba749c879901b01541a953fc336e_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3408
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mkqqmkwz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\aynztpaq.exe" C:\Windows\SysWOW64\mkqqmkwz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mkqqmkwz binPath= "C:\Windows\SysWOW64\mkqqmkwz\aynztpaq.exe /d\"C:\Users\Admin\AppData\Local\Temp\c51aba749c879901b01541a953fc336e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2252
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mkqqmkwz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3160
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mkqqmkwz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4792
- 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:2072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3408 -s 572
  2⤵
  - Program crash
  PID:2320

C:\Windows\SysWOW64\mkqqmkwz\aynztpaq.exe
C:\Windows\SysWOW64\mkqqmkwz\aynztpaq.exe /d"C:\Users\Admin\AppData\Local\Temp\c51aba749c879901b01541a953fc336e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4708
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1672
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 512
  2⤵
  - Program crash
  PID:3040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3408 -ip 3408
1⤵
PID:1884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4708 -ip 4708
1⤵
PID:2944

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\aynztpaq.exe

Filesize
13.3MB

MD5
6ec6f7785845815c7294ecb91cfb9259

SHA1
9cf650e1de11d02756d9d148adda299ba72986a6

SHA256
58f53aa79e7f4f072d0ccefa20870b205e3ed2527209cff726e63c8e1f576b78

SHA512
9e1b022c246e04b9d38c3d1cc59f6d8c3c7b8a44e9f339504c7757be1e79a8c2799cf7824add36823dae6f83dda3c29931145ac37a65ceadc95999357302e941

Download Submit
memory/1672-11-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/1672-13-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/1672-14-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/3408-1-0x0000000002E50000-0x0000000002F50000-memory.dmp

Filesize
1024KB

Download
memory/3408-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3408-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3408-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3408-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3408-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/4708-15-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads