tofsee | 77cc13b69823c588274c5c567081f0d0cc02aca078dc0ad0040eee5ec9385395

General

Target

7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe
Size

239KB
MD5

7a5c5be60e0b6cf8fdc5d487a56cc60b
SHA1

bbc32678132d14ae7453c2617f399136123f3dcb
SHA256

77cc13b69823c588274c5c567081f0d0cc02aca078dc0ad0040eee5ec9385395
SHA512

e72d45cc7660f44e3ca931edb475a60700d653f87b3a33f81f12d16a14c6697b5cf1b1b3462471197c91927bdd8e28649d7eaaeffb3957b4fb76f705710cd559
SSDEEP

3072:1NoWIXVg044YmyJc/rY/2Woct6Mz+7L00vyLf9nQLWLIMcesvKeHTQzIaH/q99Q4:1NoWwy0jYBkE/vocLz+2QSLIBee8q9N

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
2120	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\pkfrbyuh\ImagePath = "C:\\Windows\\SysWOW64\\pkfrbyuh\\gnzmvijd.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2588	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4676	gnzmvijd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4676 set thread context of 2588	4676	gnzmvijd.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
1784	sc.exe
1648	sc.exe
4524	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

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	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	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gnzmvijd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4120 wrote to memory of 2344	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	87
PID 4120 wrote to memory of 2344	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	87
PID 4120 wrote to memory of 2344	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	87
PID 4120 wrote to memory of 5004	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	89
PID 4120 wrote to memory of 5004	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	89
PID 4120 wrote to memory of 5004	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	89
PID 4120 wrote to memory of 1784	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	92
PID 4120 wrote to memory of 1784	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	92
PID 4120 wrote to memory of 1784	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	92
PID 4120 wrote to memory of 1648	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	96
PID 4120 wrote to memory of 1648	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	96
PID 4120 wrote to memory of 1648	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	96
PID 4120 wrote to memory of 4524	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	98
PID 4120 wrote to memory of 4524	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	98
PID 4120 wrote to memory of 4524	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	98
PID 4120 wrote to memory of 2120	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	101
PID 4120 wrote to memory of 2120	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	101
PID 4120 wrote to memory of 2120	4120	7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe	101
PID 4676 wrote to memory of 2588	4676	gnzmvijd.exe	104
PID 4676 wrote to memory of 2588	4676	gnzmvijd.exe	104
PID 4676 wrote to memory of 2588	4676	gnzmvijd.exe	104
PID 4676 wrote to memory of 2588	4676	gnzmvijd.exe	104
PID 4676 wrote to memory of 2588	4676	gnzmvijd.exe	104

C:\Users\Admin\AppData\Local\Temp\7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4120
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pkfrbyuh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gnzmvijd.exe" C:\Windows\SysWOW64\pkfrbyuh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pkfrbyuh binPath= "C:\Windows\SysWOW64\pkfrbyuh\gnzmvijd.exe /d\"C:\Users\Admin\AppData\Local\Temp\7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pkfrbyuh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pkfrbyuh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4524
- 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:2120

C:\Windows\SysWOW64\pkfrbyuh\gnzmvijd.exe
C:\Windows\SysWOW64\pkfrbyuh\gnzmvijd.exe /d"C:\Users\Admin\AppData\Local\Temp\7a5c5be60e0b6cf8fdc5d487a56cc60b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4676
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2588

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\gnzmvijd.exe

Filesize
13.3MB

MD5
b99e02fb50b55a31310cde6bb730888d

SHA1
7dd8ab6f9d4ba5f78a119c3691668f799c81f480

SHA256
47b16d69d7aeaa2478067e5f7a4889973faa9304c3206e1caaafaf6044413536

SHA512
c54111239c48bba1692a66ab094dc04fa238883e66b0d8798ee18f6029773faf9a21d23652bda4f58d7b8fd49866de0fe37044e3af32f41ef1cec9f5b6aebffd

Download Submit
memory/2588-12-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/2588-18-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/2588-16-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/2588-17-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/4120-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4120-1-0x0000000000940000-0x0000000000A40000-memory.dmp

Filesize
1024KB

Download
memory/4120-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4120-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4120-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4120-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4676-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4676-15-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4676-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads