tofsee | 2482d2eeaa9f6877ec7505bd6cd92d1cd6b2014947f5aed110ef0859b5ca9f6d

General

Target

JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe
Size

12.4MB
MD5

6306de9ef95eb74853a69952775fc37b
SHA1

46479c841dab0934923c48dfb59059e056892ebe
SHA256

2482d2eeaa9f6877ec7505bd6cd92d1cd6b2014947f5aed110ef0859b5ca9f6d
SHA512

b55aa1cc984c4512d2e9cbb5eb211de454e3f5836092cb492647221fb873bd2f9387906047fcb3643b457f483799f20c7fe64aff1f4d6b6feb1d3e9956c16c81
SSDEEP

6144:+NvMXNc7x72uNJFeTgkYIvpjkHp2e7z+/uyAmMGwDkqyyyyyyyyyyyyyyyyyyyy+:+NvM9i7fNJFeTgk9BjkHp2Euu1mr

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
3764	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\kqvehash\ImagePath = "C:\\Windows\\SysWOW64\\kqvehash\\wcxajssn.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_6306de9ef95eb74853a69952775fc37b.exe

Deletes itself 1 IoCs

pid	Process
2104	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1120	wcxajssn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1120 set thread context of 2104	1120	wcxajssn.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2964	sc.exe
324	sc.exe
4892	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
2688	4516	WerFault.exe	82
2208	1120	WerFault.exe	93

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	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.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	wcxajssn.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 4516 wrote to memory of 1264	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	83
PID 4516 wrote to memory of 1264	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	83
PID 4516 wrote to memory of 1264	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	83
PID 4516 wrote to memory of 2352	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	85
PID 4516 wrote to memory of 2352	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	85
PID 4516 wrote to memory of 2352	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	85
PID 4516 wrote to memory of 2964	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	87
PID 4516 wrote to memory of 2964	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	87
PID 4516 wrote to memory of 2964	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	87
PID 4516 wrote to memory of 324	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	89
PID 4516 wrote to memory of 324	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	89
PID 4516 wrote to memory of 324	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	89
PID 4516 wrote to memory of 4892	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	91
PID 4516 wrote to memory of 4892	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	91
PID 4516 wrote to memory of 4892	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	91
PID 4516 wrote to memory of 3764	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	94
PID 4516 wrote to memory of 3764	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	94
PID 4516 wrote to memory of 3764	4516	JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe	94
PID 1120 wrote to memory of 2104	1120	wcxajssn.exe	100
PID 1120 wrote to memory of 2104	1120	wcxajssn.exe	100
PID 1120 wrote to memory of 2104	1120	wcxajssn.exe	100
PID 1120 wrote to memory of 2104	1120	wcxajssn.exe	100
PID 1120 wrote to memory of 2104	1120	wcxajssn.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4516
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kqvehash\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wcxajssn.exe" C:\Windows\SysWOW64\kqvehash\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kqvehash binPath= "C:\Windows\SysWOW64\kqvehash\wcxajssn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kqvehash "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kqvehash
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4892
- 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:3764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4516 -s 1040
  2⤵
  - Program crash
  PID:2688

C:\Windows\SysWOW64\kqvehash\wcxajssn.exe
C:\Windows\SysWOW64\kqvehash\wcxajssn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6306de9ef95eb74853a69952775fc37b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1120 -s 524
  2⤵
  - Program crash
  PID:2208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4516 -ip 4516
1⤵
PID:2360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1120 -ip 1120
1⤵
PID:4564

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\wcxajssn.exe

Filesize
12.6MB

MD5
019cbde67112b968a69590a2d5b3ee01

SHA1
ffb5428c771e501ce5ac53c2b2b650323711c39a

SHA256
221530d1f85f726d7145c528d2eb8c44714daf949296e6617ef99590bcfb6550

SHA512
d718a022ad4c765a0c52d38c691a82b68bd4433fa467fd9ece39e44af6e8328b90cf67ea194a22cbcadcc954f974aa0ffd489ce1716d0743372361d7355e4a4a

Download Submit
memory/1120-11-0x0000000000400000-0x0000000000784000-memory.dmp

Filesize
3.5MB

Download
memory/1120-16-0x0000000000400000-0x0000000000784000-memory.dmp

Filesize
3.5MB

Download
memory/2104-12-0x0000000001280000-0x0000000001295000-memory.dmp

Filesize
84KB

Download
memory/2104-14-0x0000000001280000-0x0000000001295000-memory.dmp

Filesize
84KB

Download
memory/2104-15-0x0000000001280000-0x0000000001295000-memory.dmp

Filesize
84KB

Download
memory/4516-2-0x0000000000A30000-0x0000000000A43000-memory.dmp

Filesize
76KB

Download
memory/4516-1-0x0000000000A70000-0x0000000000B70000-memory.dmp

Filesize
1024KB

Download
memory/4516-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4516-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4516-9-0x0000000000A30000-0x0000000000A43000-memory.dmp

Filesize
76KB

Download
memory/4516-8-0x0000000000400000-0x0000000000784000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads