tofsee | 852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033

General

Target

JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe
Size

258KB
MD5

3b7e3f26701a8d911c01b5dd20cbc88d
SHA1

a151397e5e820e637b826cc70f5727a63972770b
SHA256

852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033
SHA512

f1c0d25ce9a43e0d444712fed708cd0e919c59aa26398976f834a7b19d1257200b23399e20b3c9797234cccd6c2cd0251afa9f14e5a05c7784e8952b21d9e11b
SSDEEP

6144:ZQFMZhT/1A4ToggvrHXgxH8+MKAuERtPQ7:ZAeh/1A4kgi3gdCKA9jI

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
5092	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\mdreizya\ImagePath = "C:\\Windows\\SysWOW64\\mdreizya\\tfaxeddr.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	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe

Deletes itself 1 IoCs

pid	Process
4716	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3940	tfaxeddr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3940 set thread context of 4716	3940	tfaxeddr.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3320	sc.exe
1820	sc.exe
2256	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
3700	808	WerFault.exe	82
3416	3940	WerFault.exe	94

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_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.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	tfaxeddr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 808 wrote to memory of 2012	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	83
PID 808 wrote to memory of 2012	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	83
PID 808 wrote to memory of 2012	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	83
PID 808 wrote to memory of 1168	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	85
PID 808 wrote to memory of 1168	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	85
PID 808 wrote to memory of 1168	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	85
PID 808 wrote to memory of 3320	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	87
PID 808 wrote to memory of 3320	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	87
PID 808 wrote to memory of 3320	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	87
PID 808 wrote to memory of 1820	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	89
PID 808 wrote to memory of 1820	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	89
PID 808 wrote to memory of 1820	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	89
PID 808 wrote to memory of 2256	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	92
PID 808 wrote to memory of 2256	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	92
PID 808 wrote to memory of 2256	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	92
PID 808 wrote to memory of 5092	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	95
PID 808 wrote to memory of 5092	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	95
PID 808 wrote to memory of 5092	808	JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe	95
PID 3940 wrote to memory of 4716	3940	tfaxeddr.exe	101
PID 3940 wrote to memory of 4716	3940	tfaxeddr.exe	101
PID 3940 wrote to memory of 4716	3940	tfaxeddr.exe	101
PID 3940 wrote to memory of 4716	3940	tfaxeddr.exe	101
PID 3940 wrote to memory of 4716	3940	tfaxeddr.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mdreizya\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tfaxeddr.exe" C:\Windows\SysWOW64\mdreizya\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mdreizya binPath= "C:\Windows\SysWOW64\mdreizya\tfaxeddr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mdreizya "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mdreizya
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2256
- 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:5092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 808 -s 1252
  2⤵
  - Program crash
  PID:3700

C:\Windows\SysWOW64\mdreizya\tfaxeddr.exe
C:\Windows\SysWOW64\mdreizya\tfaxeddr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_852b4503d236e4c9791449bc59dc3e81718c98ce87a9fa2253de95fd362cf033.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3940
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3940 -s 520
  2⤵
  - Program crash
  PID:3416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 808 -ip 808
1⤵
PID:4632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3940 -ip 3940
1⤵
PID:3268

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\tfaxeddr.exe

Filesize
14.6MB

MD5
8856d1fc8c3c44b2bfeeed9bdd379995

SHA1
460d422ed649f6a848412be93193f32999d3748b

SHA256
2abf9a90dc3d96b7997b9b573f063474fb9522c88cc2f5edcf9d976346a1e4cd

SHA512
208bb827227951088b327dbb5e0258f2b2a861f24786045741c4a8775b027d63e29dff36e94531e88861aa36a50b035ca95427edc349dc7bda22f9cfc89c2ff4

Download Submit
memory/808-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/808-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/808-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/808-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/808-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/808-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3940-14-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/3940-15-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4716-11-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/4716-13-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/4716-16-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads