tofsee | d0978ac838d8b09d7ff16bb48f6f8cacde782a3850c72b6a43254125a3ade655

General

Target

JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe
Size

10.0MB
MD5

a278e4c790ac1ec17e6549ccb38c0113
SHA1

6284ed2b4d460a6df65ce9a0ebd33e4783501033
SHA256

d0978ac838d8b09d7ff16bb48f6f8cacde782a3850c72b6a43254125a3ade655
SHA512

e2d8b191f6182f71794fa571dc3780020bbebc9fa1f3576b980583c8a2a2a8de3e376fa0850aa8d412610a09cf6e832c9ba075dba12e6f08d60efcb1e0c66461
SSDEEP

12288:eZ93MVB6rNhb20I0Sq/bdcdKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK/:e73MVHJ0Sob

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
1540	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\vbnwiuqk\ImagePath = "C:\\Windows\\SysWOW64\\vbnwiuqk\\nugtcpqk.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_a278e4c790ac1ec17e6549ccb38c0113.exe

Deletes itself 1 IoCs

pid	Process
4248	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2944	nugtcpqk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2944 set thread context of 4248	2944	nugtcpqk.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3612	sc.exe
2228	sc.exe
932	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3064	3304	WerFault.exe	81
3432	2944	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	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.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	nugtcpqk.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 3304 wrote to memory of 4132	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	82
PID 3304 wrote to memory of 4132	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	82
PID 3304 wrote to memory of 4132	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	82
PID 3304 wrote to memory of 4064	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	84
PID 3304 wrote to memory of 4064	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	84
PID 3304 wrote to memory of 4064	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	84
PID 3304 wrote to memory of 3612	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	86
PID 3304 wrote to memory of 3612	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	86
PID 3304 wrote to memory of 3612	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	86
PID 3304 wrote to memory of 2228	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	88
PID 3304 wrote to memory of 2228	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	88
PID 3304 wrote to memory of 2228	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	88
PID 3304 wrote to memory of 932	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	90
PID 3304 wrote to memory of 932	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	90
PID 3304 wrote to memory of 932	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	90
PID 3304 wrote to memory of 1540	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	93
PID 3304 wrote to memory of 1540	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	93
PID 3304 wrote to memory of 1540	3304	JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe	93
PID 2944 wrote to memory of 4248	2944	nugtcpqk.exe	98
PID 2944 wrote to memory of 4248	2944	nugtcpqk.exe	98
PID 2944 wrote to memory of 4248	2944	nugtcpqk.exe	98
PID 2944 wrote to memory of 4248	2944	nugtcpqk.exe	98
PID 2944 wrote to memory of 4248	2944	nugtcpqk.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vbnwiuqk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nugtcpqk.exe" C:\Windows\SysWOW64\vbnwiuqk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vbnwiuqk binPath= "C:\Windows\SysWOW64\vbnwiuqk\nugtcpqk.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vbnwiuqk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vbnwiuqk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:932
- 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:1540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3304 -s 660
  2⤵
  - Program crash
  PID:3064

C:\Windows\SysWOW64\vbnwiuqk\nugtcpqk.exe
C:\Windows\SysWOW64\vbnwiuqk\nugtcpqk.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a278e4c790ac1ec17e6549ccb38c0113.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 508
  2⤵
  - Program crash
  PID:3432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3304 -ip 3304
1⤵
PID:3592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2944 -ip 2944
1⤵
PID:512

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\nugtcpqk.exe

Filesize
11.6MB

MD5
dc8555b633ce57fdcd3548109d126b13

SHA1
88207639cccbbd4ee892edd7eb325d22865e3114

SHA256
04a200ca632d520758f94ffd4104d38ccb90ebe0c427076c13b7713e707ae8f1

SHA512
e774413734c6210d6c44c0219923b3a3f994db495a5ebaf6ed1b8d505ed79d2793ac3468f0a88e196a85c1bdab2847feb2e53c8575d54636403751ed270f2a74

Download Submit
memory/2944-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2944-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2944-17-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3304-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3304-2-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/3304-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3304-9-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/3304-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3304-1-0x00000000006A0000-0x00000000007A0000-memory.dmp

Filesize
1024KB

Download
memory/4248-13-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/4248-15-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/4248-16-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads