tofsee | ac5364943ce772981848a4b8b0093ef8dd0427bc32f0424b1cd1964e04d948b6

General

Target

e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe
Size

10.2MB
MD5

e5d35b9f9e694af69ed798d96405ef26
SHA1

3dcb74328e61cadef3fa47b8424643887dccf976
SHA256

ac5364943ce772981848a4b8b0093ef8dd0427bc32f0424b1cd1964e04d948b6
SHA512

f7bc9e348fd9a8a52676839d0b940699309e94a8691e0f11611aec7989a27ffe934742b33e275473c92f68b6712c1b28aa43b902593a861906214e8019aaceeb
SSDEEP

196608:Hffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff/:

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
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
2644	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\szgavfir\ImagePath = "C:\\Windows\\SysWOW64\\szgavfir\\oiekvfxd.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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
564	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3168	oiekvfxd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3168 set thread context of 564	3168	oiekvfxd.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
644	sc.exe
4988	sc.exe
4828	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
1400	2472	WerFault.exe	81
4272	3168	WerFault.exe	97

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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oiekvfxd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 2076	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	86
PID 2472 wrote to memory of 2076	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	86
PID 2472 wrote to memory of 2076	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	86
PID 2472 wrote to memory of 4352	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	88
PID 2472 wrote to memory of 4352	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	88
PID 2472 wrote to memory of 4352	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	88
PID 2472 wrote to memory of 644	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	90
PID 2472 wrote to memory of 644	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	90
PID 2472 wrote to memory of 644	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	90
PID 2472 wrote to memory of 4988	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	92
PID 2472 wrote to memory of 4988	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	92
PID 2472 wrote to memory of 4988	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	92
PID 2472 wrote to memory of 4828	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	95
PID 2472 wrote to memory of 4828	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	95
PID 2472 wrote to memory of 4828	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	95
PID 2472 wrote to memory of 2644	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	98
PID 2472 wrote to memory of 2644	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	98
PID 2472 wrote to memory of 2644	2472	e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe	98
PID 3168 wrote to memory of 564	3168	oiekvfxd.exe	105
PID 3168 wrote to memory of 564	3168	oiekvfxd.exe	105
PID 3168 wrote to memory of 564	3168	oiekvfxd.exe	105
PID 3168 wrote to memory of 564	3168	oiekvfxd.exe	105
PID 3168 wrote to memory of 564	3168	oiekvfxd.exe	105

C:\Users\Admin\AppData\Local\Temp\e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\szgavfir\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oiekvfxd.exe" C:\Windows\SysWOW64\szgavfir\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create szgavfir binPath= "C:\Windows\SysWOW64\szgavfir\oiekvfxd.exe /d\"C:\Users\Admin\AppData\Local\Temp\e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description szgavfir "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start szgavfir
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4828
- 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:2644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2472 -s 892
  2⤵
  - Program crash
  PID:1400

C:\Windows\SysWOW64\szgavfir\oiekvfxd.exe
C:\Windows\SysWOW64\szgavfir\oiekvfxd.exe /d"C:\Users\Admin\AppData\Local\Temp\e5d35b9f9e694af69ed798d96405ef26_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3168 -s 512
  2⤵
  - Program crash
  PID:4272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2472 -ip 2472
1⤵
PID:3048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 3168 -ip 3168
1⤵
PID:1948

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\oiekvfxd.exe

Filesize
14.5MB

MD5
3a376c0bbf8dd40f62253dbc4d17c648

SHA1
158a7be254f97951ce512eb9127ce433d4fd1774

SHA256
6d7428bcd7b19921a89c1caf182a353e29103d6440b0c4f79ef79865e266548b

SHA512
fdaeefac9464c46e8e5c7dfa155b4520ee6f343cfbc059af8e6eb16ec3b0a7d9756c7502b119fa26a010e3ff837d777800179e9c6b68b5fd246a07b784cba0b5

Download Submit
memory/564-14-0x00000000001E0000-0x00000000001F5000-memory.dmp

Filesize
84KB

Download
memory/564-17-0x00000000001E0000-0x00000000001F5000-memory.dmp

Filesize
84KB

Download
memory/564-16-0x00000000001E0000-0x00000000001F5000-memory.dmp

Filesize
84KB

Download
memory/2472-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2472-9-0x0000000000850000-0x0000000000863000-memory.dmp

Filesize
76KB

Download
memory/2472-1-0x0000000000880000-0x0000000000980000-memory.dmp

Filesize
1024KB

Download
memory/2472-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2472-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2472-2-0x0000000000850000-0x0000000000863000-memory.dmp

Filesize
76KB

Download
memory/3168-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3168-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3168-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3168-19-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads