tofsee | 963ab9d7bad967865b6abba6e970be5016ddf917238984a1a6fdc4e68d459358

General

Target

JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe
Size

13.9MB
MD5

31ccc97297cfafca0b922f0534f07167
SHA1

ebb2566ce3e3ea890fb952c0662b8804ade52f99
SHA256

963ab9d7bad967865b6abba6e970be5016ddf917238984a1a6fdc4e68d459358
SHA512

c2d8c81d7eafdd67967c594075c296f1269411ecfb0d94ab3755d8fb67d867d41fee6882a159375402461c0f38cad1d47c5e7963c4c78d5c63a53856af8c088b
SSDEEP

49152:1zPOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO:1

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
1900	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\wcgmqnjk\ImagePath = "C:\\Windows\\SysWOW64\\wcgmqnjk\\mrqoekti.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe

Deletes itself 1 IoCs

pid	Process
2812	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1076	mrqoekti.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1076 set thread context of 2812	1076	mrqoekti.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2952	sc.exe
3624	sc.exe
3516	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4316	1056	WerFault.exe	80
4880	1076	WerFault.exe	92

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	mrqoekti.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 3384	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	82
PID 1056 wrote to memory of 3384	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	82
PID 1056 wrote to memory of 3384	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	82
PID 1056 wrote to memory of 4248	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	84
PID 1056 wrote to memory of 4248	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	84
PID 1056 wrote to memory of 4248	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	84
PID 1056 wrote to memory of 3516	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	86
PID 1056 wrote to memory of 3516	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	86
PID 1056 wrote to memory of 3516	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	86
PID 1056 wrote to memory of 2952	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	88
PID 1056 wrote to memory of 2952	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	88
PID 1056 wrote to memory of 2952	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	88
PID 1056 wrote to memory of 3624	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	90
PID 1056 wrote to memory of 3624	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	90
PID 1056 wrote to memory of 3624	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	90
PID 1056 wrote to memory of 1900	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	93
PID 1056 wrote to memory of 1900	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	93
PID 1056 wrote to memory of 1900	1056	JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe	93
PID 1076 wrote to memory of 2812	1076	mrqoekti.exe	98
PID 1076 wrote to memory of 2812	1076	mrqoekti.exe	98
PID 1076 wrote to memory of 2812	1076	mrqoekti.exe	98
PID 1076 wrote to memory of 2812	1076	mrqoekti.exe	98
PID 1076 wrote to memory of 2812	1076	mrqoekti.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wcgmqnjk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mrqoekti.exe" C:\Windows\SysWOW64\wcgmqnjk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4248
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wcgmqnjk binPath= "C:\Windows\SysWOW64\wcgmqnjk\mrqoekti.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wcgmqnjk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wcgmqnjk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3624
- 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:1900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1056 -s 1188
  2⤵
  - Program crash
  PID:4316

C:\Windows\SysWOW64\wcgmqnjk\mrqoekti.exe
C:\Windows\SysWOW64\wcgmqnjk\mrqoekti.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31ccc97297cfafca0b922f0534f07167.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1076
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1076 -s 536
  2⤵
  - Program crash
  PID:4880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1056 -ip 1056
1⤵
PID:2876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1076 -ip 1076
1⤵
PID:1592

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

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Downloads

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

Filesize
14.1MB

MD5
d8156732fad0f783e2b6733750117b2c

SHA1
d6a55939f6508543796a5c60c88aec287e3af5cf

SHA256
c91b93a354ad35c385ed6b7daf00254bb2334c1756a966021916427847f07318

SHA512
b65e549351c2212ee20c0c741bc4a6cfd92f8679e5ae20d97f42d6df8beb3818ee3190ff7a28b09eeeaf8669cf8036adfd4b10e33fe1a4a7b39e124ff1c273b5

Download Submit
memory/1056-1-0x0000000001830000-0x0000000001930000-memory.dmp

Filesize
1024KB

Download
memory/1056-2-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/1056-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1056-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1056-9-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/1056-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1076-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1076-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2812-11-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download
memory/2812-13-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download
memory/2812-15-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads