tofsee | 5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b

General

Target

JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe
Size

286KB
MD5

bebcafb815c87b777af00c7aaa8f0063
SHA1

7438dbc9f820d017151411d0581bcd0a35a82b76
SHA256

5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b
SHA512

346ce96d3da0da712e226ffce18a5fa8fda07993c3501528e696f2c0d41eaca556560547aecb7666ae5d0d4d4b5b686572c849e8503cffd3c98d4474f9911303
SSDEEP

3072:saxXGEcrxT19jb0xdlCBFL4r5u0ay/M8Z9OOHesIZQFr+uX3Prgm5ejH:seXud19jbSlCbkrL+OHesIq53T8

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
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
1456	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\vzqlghbn\ImagePath = "C:\\Windows\\SysWOW64\\vzqlghbn\\ahkijjzn.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe

Deletes itself 1 IoCs

pid	Process
640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4388	ahkijjzn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4388 set thread context of 640	4388	ahkijjzn.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2788	sc.exe
3724	sc.exe
2832	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
4868	440	WerFault.exe	81
5008	4388	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	ahkijjzn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 440 wrote to memory of 1692	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	82
PID 440 wrote to memory of 1692	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	82
PID 440 wrote to memory of 1692	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	82
PID 440 wrote to memory of 2552	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	84
PID 440 wrote to memory of 2552	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	84
PID 440 wrote to memory of 2552	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	84
PID 440 wrote to memory of 3724	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	86
PID 440 wrote to memory of 3724	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	86
PID 440 wrote to memory of 3724	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	86
PID 440 wrote to memory of 2832	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	88
PID 440 wrote to memory of 2832	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	88
PID 440 wrote to memory of 2832	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	88
PID 440 wrote to memory of 2788	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	90
PID 440 wrote to memory of 2788	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	90
PID 440 wrote to memory of 2788	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	90
PID 440 wrote to memory of 1456	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	93
PID 440 wrote to memory of 1456	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	93
PID 440 wrote to memory of 1456	440	JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe	93
PID 4388 wrote to memory of 640	4388	ahkijjzn.exe	98
PID 4388 wrote to memory of 640	4388	ahkijjzn.exe	98
PID 4388 wrote to memory of 640	4388	ahkijjzn.exe	98
PID 4388 wrote to memory of 640	4388	ahkijjzn.exe	98
PID 4388 wrote to memory of 640	4388	ahkijjzn.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:440
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vzqlghbn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ahkijjzn.exe" C:\Windows\SysWOW64\vzqlghbn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vzqlghbn binPath= "C:\Windows\SysWOW64\vzqlghbn\ahkijjzn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vzqlghbn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vzqlghbn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- 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:1456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 440 -s 804
  2⤵
  - Program crash
  PID:4868

C:\Windows\SysWOW64\vzqlghbn\ahkijjzn.exe
C:\Windows\SysWOW64\vzqlghbn\ahkijjzn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5baa53a33e5183490b5f4111bbc405a8a4203b1617c635c1b4bda0dd3955298b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4388
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4388 -s 532
  2⤵
  - Program crash
  PID:5008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 440 -ip 440
1⤵
PID:2968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4388 -ip 4388
1⤵
PID:1220

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\ahkijjzn.exe

Filesize
13.1MB

MD5
2f3b6652f0ccc96c23ba8f625014abad

SHA1
74f91a1549b11437ec8a550d4307089aa8bad0bd

SHA256
3e255bbfadaae82f70b731d7ec3aa16202c0b87ba7f1a3e8c2094e786d3e9d1a

SHA512
345022009dfadde2f429cafa0b4aaacaa27dcf9c312e94d1d67f58e6856ac92e98a1b53b44cc9a8064d02a06897b0d216bd4b120347b013954777bcc55e92d32

Download Submit
memory/440-1-0x0000000002C20000-0x0000000002D20000-memory.dmp

Filesize
1024KB

Download
memory/440-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/440-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/440-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/440-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/440-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/640-11-0x0000000000870000-0x0000000000885000-memory.dmp

Filesize
84KB

Download
memory/640-13-0x0000000000870000-0x0000000000885000-memory.dmp

Filesize
84KB

Download
memory/640-14-0x0000000000870000-0x0000000000885000-memory.dmp

Filesize
84KB

Download
memory/4388-15-0x0000000000400000-0x0000000002B90000-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