tofsee | e83add0c94144cc987e72f1e5b6ff8fcacb141e181345b513a5d126b7b4cd8ab

General

Target

JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe
Size

11.0MB
MD5

264bdfcfec718b431507ff0c45ad120c
SHA1

6d6ad95b2da78b4d5bfa5a2342856fb1ee40480e
SHA256

e83add0c94144cc987e72f1e5b6ff8fcacb141e181345b513a5d126b7b4cd8ab
SHA512

c15528e0bedf2b5599504f1ffdf07612711009035dc805d4279860a7783772a03a8e9b281246d97f2d2c839fa89ba253f9132519feeb9fcdf7d5355d51ec07bd
SSDEEP

98304:NvCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCL:N

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
3824	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\rlwoahqk\ImagePath = "C:\\Windows\\SysWOW64\\rlwoahqk\\lfbhscua.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_264bdfcfec718b431507ff0c45ad120c.exe

Deletes itself 1 IoCs

pid	Process
4564	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4188	lfbhscua.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4188 set thread context of 4564	4188	lfbhscua.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4468	sc.exe
4080	sc.exe
1776	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
2088	1056	WerFault.exe	81
1152	4188	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lfbhscua.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 2968	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	82
PID 1056 wrote to memory of 2968	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	82
PID 1056 wrote to memory of 2968	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	82
PID 1056 wrote to memory of 2300	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	84
PID 1056 wrote to memory of 2300	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	84
PID 1056 wrote to memory of 2300	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	84
PID 1056 wrote to memory of 4468	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	86
PID 1056 wrote to memory of 4468	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	86
PID 1056 wrote to memory of 4468	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	86
PID 1056 wrote to memory of 4080	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	88
PID 1056 wrote to memory of 4080	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	88
PID 1056 wrote to memory of 4080	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	88
PID 1056 wrote to memory of 1776	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	90
PID 1056 wrote to memory of 1776	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	90
PID 1056 wrote to memory of 1776	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	90
PID 1056 wrote to memory of 3824	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	93
PID 1056 wrote to memory of 3824	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	93
PID 1056 wrote to memory of 3824	1056	JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe	93
PID 4188 wrote to memory of 4564	4188	lfbhscua.exe	98
PID 4188 wrote to memory of 4564	4188	lfbhscua.exe	98
PID 4188 wrote to memory of 4564	4188	lfbhscua.exe	98
PID 4188 wrote to memory of 4564	4188	lfbhscua.exe	98
PID 4188 wrote to memory of 4564	4188	lfbhscua.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rlwoahqk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lfbhscua.exe" C:\Windows\SysWOW64\rlwoahqk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2300
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rlwoahqk binPath= "C:\Windows\SysWOW64\rlwoahqk\lfbhscua.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rlwoahqk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4080
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rlwoahqk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1776
- 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:3824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1056 -s 648
  2⤵
  - Program crash
  PID:2088

C:\Windows\SysWOW64\rlwoahqk\lfbhscua.exe
C:\Windows\SysWOW64\rlwoahqk\lfbhscua.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_264bdfcfec718b431507ff0c45ad120c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4188
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4188 -s 508
  2⤵
  - Program crash
  PID:1152

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1056 -ip 1056
1⤵
PID:1076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4188 -ip 4188
1⤵
PID:5020

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

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Downloads

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

Filesize
13.0MB

MD5
ee67a1bf01f4be8a293b6b453028325a

SHA1
bd1c1a329e14ed0203707f0fe47f4501980fd4d9

SHA256
7466286e417553c7d165748d3ae02cf8a48a5003baeed8f1e85caf40793cb191

SHA512
bcf050a0ad335b2c7e43f4e274f7ccabc53dee894a848ffc53da9d7d88330b20debd3562cfde62bdc18ca6e30c27e7a7d69b9947fc823a05d3f8d6be8a6b10ac

Download Submit
memory/1056-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1056-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1056-1-0x00000000004B0000-0x00000000005B0000-memory.dmp

Filesize
1024KB

Download
memory/1056-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1056-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1056-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4188-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4188-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4188-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4188-18-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4564-14-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/4564-16-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/4564-17-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads