tofsee | d29a3b017f6a864c855fca570073d822bb37a77006467b8a75f04ce7edcbfedc

General

Target

JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe
Size

14.5MB
MD5

dc63c79c3f7bc083812b8e8f47c44902
SHA1

640329ba407b6ed8482d2d5e0d082847451a7d37
SHA256

d29a3b017f6a864c855fca570073d822bb37a77006467b8a75f04ce7edcbfedc
SHA512

5610cb53a6274f62be4e9341f6eb0fda3e28ccb4f69b344b63c4a531f9044ca758519f89aacc5d312624962606e80333ae38fab9ea84e453513c7f754e6b2534
SSDEEP

12288:OZlC6v/5oQU6buXH53333333333333333333333333333333333333333333333n:ObjvluXH

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
1968	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\xmhqrbs\ImagePath = "C:\\Windows\\SysWOW64\\xmhqrbs\\ljykealb.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe

Deletes itself 1 IoCs

pid	Process
2072	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1412	ljykealb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1412 set thread context of 2072	1412	ljykealb.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3412	sc.exe
4580	sc.exe
988	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
688	1572	WerFault.exe	81
912	1412	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	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.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	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	ljykealb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1572 wrote to memory of 4812	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	82
PID 1572 wrote to memory of 4812	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	82
PID 1572 wrote to memory of 4812	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	82
PID 1572 wrote to memory of 4072	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	84
PID 1572 wrote to memory of 4072	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	84
PID 1572 wrote to memory of 4072	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	84
PID 1572 wrote to memory of 3412	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	86
PID 1572 wrote to memory of 3412	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	86
PID 1572 wrote to memory of 3412	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	86
PID 1572 wrote to memory of 4580	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	88
PID 1572 wrote to memory of 4580	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	88
PID 1572 wrote to memory of 4580	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	88
PID 1572 wrote to memory of 988	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	90
PID 1572 wrote to memory of 988	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	90
PID 1572 wrote to memory of 988	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	90
PID 1572 wrote to memory of 1968	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	93
PID 1572 wrote to memory of 1968	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	93
PID 1572 wrote to memory of 1968	1572	JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe	93
PID 1412 wrote to memory of 2072	1412	ljykealb.exe	98
PID 1412 wrote to memory of 2072	1412	ljykealb.exe	98
PID 1412 wrote to memory of 2072	1412	ljykealb.exe	98
PID 1412 wrote to memory of 2072	1412	ljykealb.exe	98
PID 1412 wrote to memory of 2072	1412	ljykealb.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1572
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xmhqrbs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ljykealb.exe" C:\Windows\SysWOW64\xmhqrbs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4072
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xmhqrbs binPath= "C:\Windows\SysWOW64\xmhqrbs\ljykealb.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3412
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xmhqrbs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xmhqrbs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:988
- 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:1968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1572 -s 656
  2⤵
  - Program crash
  PID:688

C:\Windows\SysWOW64\xmhqrbs\ljykealb.exe
C:\Windows\SysWOW64\xmhqrbs\ljykealb.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc63c79c3f7bc083812b8e8f47c44902.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1412
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1412 -s 508
  2⤵
  - Program crash
  PID:912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1572 -ip 1572
1⤵
PID:4648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1412 -ip 1412
1⤵
PID:436

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\ljykealb.exe

Filesize
12.0MB

MD5
b59e4f9e18d69a6810f72ebb79b37391

SHA1
85fd537dc6da23b504c032db1c10a6266c7d27d3

SHA256
11df3187702a5a633d13be4397728c8f1eadff449b651bc2fd34f3ca09e5a36e

SHA512
b2d652bda4cf6dee746c1bd5eab29280c8f8ddeb69068d17c8772229bfbaab3a21ac358b3187b5cbfc6b4cce4ac8c81b87882fda388e4cf384188faa45318548

Download Submit
memory/1412-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1412-16-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1412-9-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1572-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1572-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1572-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1572-13-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1572-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1572-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2072-10-0x00000000003E0000-0x00000000003F5000-memory.dmp

Filesize
84KB

Download
memory/2072-17-0x00000000003E0000-0x00000000003F5000-memory.dmp

Filesize
84KB

Download
memory/2072-18-0x00000000003E0000-0x00000000003F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads