tofsee | 0820b73765ba21a982c1e1b79c9b70af179535bbca414ae169a7f75d8022ea0c

General

Target

f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe
Size

13.2MB
MD5

f3a7c04cd3be48d3ec424e3bd0eb703a
SHA1

f0fe234d51dfaa9c15d28bb8dd0c6eca181fd2b7
SHA256

0820b73765ba21a982c1e1b79c9b70af179535bbca414ae169a7f75d8022ea0c
SHA512

13875f056feaf3ab9805c8549c1ba1afe923b34fdce9384ac352a173e378f0d6627015a7c1918374570b7a174f7e0600888a97025127089b656fa7bb3183b4ea
SSDEEP

49152:bSGAcdeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeq:bSO

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
3364	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\hvffslsv\ImagePath = "C:\\Windows\\SysWOW64\\hvffslsv\\getfzvgw.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
944	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1744	getfzvgw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1744 set thread context of 944	1744	getfzvgw.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2180	sc.exe
4648	sc.exe
5096	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
3976	1488	WerFault.exe	82
4612	1744	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	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.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	getfzvgw.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 1488 wrote to memory of 4996	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	83
PID 1488 wrote to memory of 4996	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	83
PID 1488 wrote to memory of 4996	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	83
PID 1488 wrote to memory of 2736	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	85
PID 1488 wrote to memory of 2736	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	85
PID 1488 wrote to memory of 2736	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	85
PID 1488 wrote to memory of 4648	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	87
PID 1488 wrote to memory of 4648	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	87
PID 1488 wrote to memory of 4648	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	87
PID 1488 wrote to memory of 5096	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	89
PID 1488 wrote to memory of 5096	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	89
PID 1488 wrote to memory of 5096	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	89
PID 1488 wrote to memory of 2180	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	91
PID 1488 wrote to memory of 2180	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	91
PID 1488 wrote to memory of 2180	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	91
PID 1488 wrote to memory of 3364	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	94
PID 1488 wrote to memory of 3364	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	94
PID 1488 wrote to memory of 3364	1488	f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe	94
PID 1744 wrote to memory of 944	1744	getfzvgw.exe	100
PID 1744 wrote to memory of 944	1744	getfzvgw.exe	100
PID 1744 wrote to memory of 944	1744	getfzvgw.exe	100
PID 1744 wrote to memory of 944	1744	getfzvgw.exe	100
PID 1744 wrote to memory of 944	1744	getfzvgw.exe	100

C:\Users\Admin\AppData\Local\Temp\f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1488
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hvffslsv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\getfzvgw.exe" C:\Windows\SysWOW64\hvffslsv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hvffslsv binPath= "C:\Windows\SysWOW64\hvffslsv\getfzvgw.exe /d\"C:\Users\Admin\AppData\Local\Temp\f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hvffslsv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hvffslsv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2180
- 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:3364
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1488 -s 1040
  2⤵
  - Program crash
  PID:3976

C:\Windows\SysWOW64\hvffslsv\getfzvgw.exe
C:\Windows\SysWOW64\hvffslsv\getfzvgw.exe /d"C:\Users\Admin\AppData\Local\Temp\f3a7c04cd3be48d3ec424e3bd0eb703a_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1744 -s 512
  2⤵
  - Program crash
  PID:4612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1488 -ip 1488
1⤵
PID:1796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1744 -ip 1744
1⤵
PID:3204

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\getfzvgw.exe

Filesize
12.4MB

MD5
4df369a908de3a22f6df505552c1d997

SHA1
7939a46eebd109146ee4a666659497c3e91d8603

SHA256
db0aaf8e79d91f90330e6ff1614a2d7d45b5df800077e192efa44842a12a222e

SHA512
de88fbc9588a662c88dd845a5b01781ea917c5680563108699c116e23b099232d125d44d3271476ae3d62bb1239deec57d2732dfc41ecf7ac4406a238670435f

Download Submit
memory/944-11-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/944-14-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/944-16-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/1488-2-0x00000000009C0000-0x00000000009D3000-memory.dmp

Filesize
76KB

Download
memory/1488-1-0x0000000000A20000-0x0000000000B20000-memory.dmp

Filesize
1024KB

Download
memory/1488-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1488-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1488-9-0x00000000009C0000-0x00000000009D3000-memory.dmp

Filesize
76KB

Download
memory/1488-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1744-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1744-15-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads