tofsee | baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57

General

Target

JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe
Size

184KB
MD5

d121e64beade553769f6ef0cc7775e75
SHA1

c1426982e2214c2affc2064f24cccd08cda07c3c
SHA256

baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57
SHA512

9932b163d97d30f4eb19f4498be9daac3ee8bf8bff7e9759058a383682caf65031f4cc8b3df5a381f788a456d3089b6da0566c0c422b144e110490f4a79871a7
SSDEEP

3072:JSmyTMOQe57yLWiwluxvHKiOLnaY3MPZPwLvYOYhgC:JUTMHeYz/KDnj8PLOk

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
3936	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\uhmfbkxn\ImagePath = "C:\\Windows\\SysWOW64\\uhmfbkxn\\brrrgxdv.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe

Deletes itself 1 IoCs

pid	Process
3648	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3680	brrrgxdv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3680 set thread context of 3648	3680	brrrgxdv.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2892	sc.exe
932	sc.exe
540	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
916	3204	WerFault.exe	81
464	3680	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	brrrgxdv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 4660	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	82
PID 3204 wrote to memory of 4660	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	82
PID 3204 wrote to memory of 4660	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	82
PID 3204 wrote to memory of 4072	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	84
PID 3204 wrote to memory of 4072	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	84
PID 3204 wrote to memory of 4072	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	84
PID 3204 wrote to memory of 2892	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	86
PID 3204 wrote to memory of 2892	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	86
PID 3204 wrote to memory of 2892	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	86
PID 3204 wrote to memory of 932	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	88
PID 3204 wrote to memory of 932	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	88
PID 3204 wrote to memory of 932	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	88
PID 3204 wrote to memory of 540	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	90
PID 3204 wrote to memory of 540	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	90
PID 3204 wrote to memory of 540	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	90
PID 3204 wrote to memory of 3936	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	93
PID 3204 wrote to memory of 3936	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	93
PID 3204 wrote to memory of 3936	3204	JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe	93
PID 3680 wrote to memory of 3648	3680	brrrgxdv.exe	98
PID 3680 wrote to memory of 3648	3680	brrrgxdv.exe	98
PID 3680 wrote to memory of 3648	3680	brrrgxdv.exe	98
PID 3680 wrote to memory of 3648	3680	brrrgxdv.exe	98
PID 3680 wrote to memory of 3648	3680	brrrgxdv.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uhmfbkxn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\brrrgxdv.exe" C:\Windows\SysWOW64\uhmfbkxn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4072
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uhmfbkxn binPath= "C:\Windows\SysWOW64\uhmfbkxn\brrrgxdv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uhmfbkxn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uhmfbkxn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:540
- 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:3936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3204 -s 1044
  2⤵
  - Program crash
  PID:916

C:\Windows\SysWOW64\uhmfbkxn\brrrgxdv.exe
C:\Windows\SysWOW64\uhmfbkxn\brrrgxdv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_baed73b9a7011be9797591a25769774a83bbefb8a71e5d26b794f4ff889dcd57.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3680
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 516
  2⤵
  - Program crash
  PID:464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3204 -ip 3204
1⤵
PID:4300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3680 -ip 3680
1⤵
PID:5104

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\brrrgxdv.exe

Filesize
11.4MB

MD5
1a6dc83db71f63bb0b076486f597c408

SHA1
b599ebc6aa3bceb71bb8a1b4b496c01658fe53b2

SHA256
48b2149d97fbf5016747d2d6bf8fa2d1ba733a7c9feb7828d888e69af7b51396

SHA512
a1c59d6448763830cb63ff23220eec337c69410daf2e1e2225aad2f42e6d9af33b9e1f956204a1a359573cab03e4b6322ae1dab889fa38480361c345dc61179a

Download Submit
memory/3204-8-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3204-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3204-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3204-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3204-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3204-1-0x0000000000490000-0x0000000000590000-memory.dmp

Filesize
1024KB

Download
memory/3648-14-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/3648-16-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/3648-17-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/3680-11-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3680-12-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3680-13-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3680-18-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads