tofsee | 743a19ceca5abb68c3e29578e5a7205b3a60199be70ac392b16bd1e2421278af

General

Target

JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe
Size

11.9MB
MD5

b980be7b566a6bbe882ad701ce74d0e5
SHA1

4aada7c030925645611258643db8d8b91036cb78
SHA256

743a19ceca5abb68c3e29578e5a7205b3a60199be70ac392b16bd1e2421278af
SHA512

ffa38d7b12cbb0d1c191d7907e7d33c002ea074cf33d736f4ad4e520486338fe39ba7989f38e63d797e9d540a6be09ffcd5c27e27f6fefec574f0d62b35ad137
SSDEEP

3072:6u034LyTdUfJjzBqFmdza1eE2xuBl7AoB9IP6YDU2EGFvOzp8VS9M65vKxlKZ99b:4GzoFmfE221B9IP6SjEGQ6VKNwl

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.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
1568	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\drzruisr\ImagePath = "C:\\Windows\\SysWOW64\\drzruisr\\zsgskegt.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe

Deletes itself 1 IoCs

pid	Process
2420	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1468	zsgskegt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1468 set thread context of 2420	1468	zsgskegt.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3652	sc.exe
3936	sc.exe
4888	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	336	WerFault.exe	84
2160	1468	WerFault.exe	95

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	sc.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	zsgskegt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 336 wrote to memory of 3232	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	85
PID 336 wrote to memory of 3232	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	85
PID 336 wrote to memory of 3232	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	85
PID 336 wrote to memory of 2256	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	87
PID 336 wrote to memory of 2256	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	87
PID 336 wrote to memory of 2256	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	87
PID 336 wrote to memory of 3936	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	89
PID 336 wrote to memory of 3936	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	89
PID 336 wrote to memory of 3936	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	89
PID 336 wrote to memory of 4888	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	91
PID 336 wrote to memory of 4888	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	91
PID 336 wrote to memory of 4888	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	91
PID 336 wrote to memory of 3652	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	93
PID 336 wrote to memory of 3652	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	93
PID 336 wrote to memory of 3652	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	93
PID 336 wrote to memory of 1568	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	96
PID 336 wrote to memory of 1568	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	96
PID 336 wrote to memory of 1568	336	JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe	96
PID 1468 wrote to memory of 2420	1468	zsgskegt.exe	102
PID 1468 wrote to memory of 2420	1468	zsgskegt.exe	102
PID 1468 wrote to memory of 2420	1468	zsgskegt.exe	102
PID 1468 wrote to memory of 2420	1468	zsgskegt.exe	102
PID 1468 wrote to memory of 2420	1468	zsgskegt.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\drzruisr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zsgskegt.exe" C:\Windows\SysWOW64\drzruisr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create drzruisr binPath= "C:\Windows\SysWOW64\drzruisr\zsgskegt.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3936
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description drzruisr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4888
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start drzruisr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3652
- 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:1568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 336 -s 1048
  2⤵
  - Program crash
  PID:2076

C:\Windows\SysWOW64\drzruisr\zsgskegt.exe
C:\Windows\SysWOW64\drzruisr\zsgskegt.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b980be7b566a6bbe882ad701ce74d0e5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1468
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1468 -s 516
  2⤵
  - Program crash
  PID:2160

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 336 -ip 336
1⤵
PID:3052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1468 -ip 1468
1⤵
PID:2576

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\zsgskegt.exe

Filesize
13.7MB

MD5
88be780f3e5017c25428939eaeef80fc

SHA1
fcfa6187a76f23eae048f85897de54b19331c328

SHA256
8367f1a37a325377c197a68ddee0d04c7eeeb3f0c44055a879f29f8e48bada3d

SHA512
7fdf759044e0b2be07b5b7883d2fe0218004bb3dc9700a4e687ddc60ccba9c99b0fb3f29edefa12922fb5bc831f34ea598a1afadd0f386adbd543b084bc504d7

Download Submit
memory/336-2-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/336-1-0x0000000001820000-0x0000000001920000-memory.dmp

Filesize
1024KB

Download
memory/336-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/336-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/336-9-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/336-8-0x0000000000400000-0x00000000016BB000-memory.dmp

Filesize
18.7MB

Download
memory/1468-14-0x0000000000400000-0x00000000016BB000-memory.dmp

Filesize
18.7MB

Download
memory/1468-17-0x0000000000400000-0x00000000016BB000-memory.dmp

Filesize
18.7MB

Download
memory/2420-13-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/2420-11-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/2420-15-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads