tofsee | 6de6aec6a5c130802bc31f27194e2deeab5e72dce322d925d270359a0a239f8a

General

Target

c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe
Size

10.9MB
MD5

c7bfea0e1fa04342d6c32abe84e75acf
SHA1

f91b2ede055fa0e3348310ff0794409a3c857819
SHA256

6de6aec6a5c130802bc31f27194e2deeab5e72dce322d925d270359a0a239f8a
SHA512

57c4b451230c5b315ed58ce5467107a2a853985d06e05f63fd2e9e5e78fe20428a184cf637e6871642093ce3d907ae4a44e5d874e78da6c59c2f8e10a491b50d
SSDEEP

196608:IXPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPH:I

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
1648	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\hbiwxcya\ImagePath = "C:\\Windows\\SysWOW64\\hbiwxcya\\wlyugfyk.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	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3840	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5000	wlyugfyk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5000 set thread context of 3840	5000	wlyugfyk.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1680	sc.exe
404	sc.exe
3444	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
5060	212	WerFault.exe	81
668	5000	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	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	wlyugfyk.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 212 wrote to memory of 2148	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	82
PID 212 wrote to memory of 2148	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	82
PID 212 wrote to memory of 2148	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	82
PID 212 wrote to memory of 2152	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	84
PID 212 wrote to memory of 2152	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	84
PID 212 wrote to memory of 2152	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	84
PID 212 wrote to memory of 1680	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	86
PID 212 wrote to memory of 1680	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	86
PID 212 wrote to memory of 1680	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	86
PID 212 wrote to memory of 404	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	88
PID 212 wrote to memory of 404	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	88
PID 212 wrote to memory of 404	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	88
PID 212 wrote to memory of 3444	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	90
PID 212 wrote to memory of 3444	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	90
PID 212 wrote to memory of 3444	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	90
PID 212 wrote to memory of 1648	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	93
PID 212 wrote to memory of 1648	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	93
PID 212 wrote to memory of 1648	212	c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe	93
PID 5000 wrote to memory of 3840	5000	wlyugfyk.exe	98
PID 5000 wrote to memory of 3840	5000	wlyugfyk.exe	98
PID 5000 wrote to memory of 3840	5000	wlyugfyk.exe	98
PID 5000 wrote to memory of 3840	5000	wlyugfyk.exe	98
PID 5000 wrote to memory of 3840	5000	wlyugfyk.exe	98

C:\Users\Admin\AppData\Local\Temp\c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hbiwxcya\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wlyugfyk.exe" C:\Windows\SysWOW64\hbiwxcya\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2152
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hbiwxcya binPath= "C:\Windows\SysWOW64\hbiwxcya\wlyugfyk.exe /d\"C:\Users\Admin\AppData\Local\Temp\c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hbiwxcya "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hbiwxcya
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3444
- 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:1648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 212 -s 1308
  2⤵
  - Program crash
  PID:5060

C:\Windows\SysWOW64\hbiwxcya\wlyugfyk.exe
C:\Windows\SysWOW64\hbiwxcya\wlyugfyk.exe /d"C:\Users\Admin\AppData\Local\Temp\c7bfea0e1fa04342d6c32abe84e75acf_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5000
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5000 -s 560
  2⤵
  - Program crash
  PID:668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 212 -ip 212
1⤵
PID:3764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 5000 -ip 5000
1⤵
PID:2368

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\wlyugfyk.exe

Filesize
14.5MB

MD5
7f2a96e0a8b5df4b021819447a8d1db1

SHA1
7d673749f7801bcf5bfa65a2abeb4bc62d4b75d8

SHA256
1e3dedfbf54b02a0c332080cee94305aa37728bbed52dd7de9961d937df61ef7

SHA512
e9a94a1076b676dd78d3584bf88f09027847df6dcafa5e49dc60382a283d1b6d2c895949a01f562956193232acda69d45158e49c79cfd41756116ca416197cf7

Download Submit
memory/212-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/212-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/212-1-0x0000000000A30000-0x0000000000B30000-memory.dmp

Filesize
1024KB

Download
memory/212-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/212-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/212-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3840-12-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/3840-14-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/3840-17-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/5000-11-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/5000-16-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/5000-15-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads