tofsee | 8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b

General

Target

JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe
Size

306KB
MD5

893de434c901ce75a2967c8a55c51754
SHA1

eda71f67e843aac6fa4d9328ad4c75cb7515b91b
SHA256

8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b
SHA512

9a7b7746aa1b377f5e5314344ddc8c0ff827c5f37fe0f99df55da078f965e68d4099db959097fa7ce456176be496b749d8fce42df847fa95e0c5f7f927db4c54
SSDEEP

6144:j7j7AupjIIwH5OalEVFvlmfDR2Cnsx2qPu:D0upjIIe5EVOfD9M2

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
4908	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\hzfhupmc\ImagePath = "C:\\Windows\\SysWOW64\\hzfhupmc\\rpzxxnwm.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_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe

Deletes itself 1 IoCs

pid	Process
2420	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3420	rpzxxnwm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3420 set thread context of 2420	3420	rpzxxnwm.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4452	sc.exe
2156	sc.exe
5008	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
3040	2324	WerFault.exe	81
2024	3420	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	sc.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rpzxxnwm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 548	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	82
PID 2324 wrote to memory of 548	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	82
PID 2324 wrote to memory of 548	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	82
PID 2324 wrote to memory of 1256	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	84
PID 2324 wrote to memory of 1256	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	84
PID 2324 wrote to memory of 1256	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	84
PID 2324 wrote to memory of 4452	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	86
PID 2324 wrote to memory of 4452	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	86
PID 2324 wrote to memory of 4452	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	86
PID 2324 wrote to memory of 2156	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	88
PID 2324 wrote to memory of 2156	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	88
PID 2324 wrote to memory of 2156	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	88
PID 2324 wrote to memory of 5008	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	90
PID 2324 wrote to memory of 5008	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	90
PID 2324 wrote to memory of 5008	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	90
PID 2324 wrote to memory of 4908	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	93
PID 2324 wrote to memory of 4908	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	93
PID 2324 wrote to memory of 4908	2324	JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe	93
PID 3420 wrote to memory of 2420	3420	rpzxxnwm.exe	98
PID 3420 wrote to memory of 2420	3420	rpzxxnwm.exe	98
PID 3420 wrote to memory of 2420	3420	rpzxxnwm.exe	98
PID 3420 wrote to memory of 2420	3420	rpzxxnwm.exe	98
PID 3420 wrote to memory of 2420	3420	rpzxxnwm.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hzfhupmc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rpzxxnwm.exe" C:\Windows\SysWOW64\hzfhupmc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hzfhupmc binPath= "C:\Windows\SysWOW64\hzfhupmc\rpzxxnwm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hzfhupmc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hzfhupmc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5008
- 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:4908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2324 -s 1200
  2⤵
  - Program crash
  PID:3040

C:\Windows\SysWOW64\hzfhupmc\rpzxxnwm.exe
C:\Windows\SysWOW64\hzfhupmc\rpzxxnwm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fdfff633ead54bc00629d8fe23693b7d7b6f888a3142351a27d2e8f2720d41b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 532
  2⤵
  - Program crash
  PID:2024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2324 -ip 2324
1⤵
PID:2032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3420 -ip 3420
1⤵
PID:4012

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\rpzxxnwm.exe

Filesize
14.4MB

MD5
597a913cff5a162935718e6ecf303db6

SHA1
54688aed0c6466630cba374a7df931ccb12ffa20

SHA256
945e9a3a744209bdf52ce6af2dd9f0367a8ac391fa334be3b724d8e16d4feba4

SHA512
0e7b3d01e1e8d1a253a411cdd00ee97e912311c7ce5e206ff6c2cba0c65020f8103dd36837c28b5156fcfd4b252eb4cb934350760a2b050bc8c3692f4786c784

Download Submit
memory/2324-1-0x0000000002E40000-0x0000000002F40000-memory.dmp

Filesize
1024KB

Download
memory/2324-2-0x0000000002DC0000-0x0000000002DD3000-memory.dmp

Filesize
76KB

Download
memory/2324-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2324-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2324-11-0x0000000002DC0000-0x0000000002DD3000-memory.dmp

Filesize
76KB

Download
memory/2324-10-0x0000000000400000-0x0000000002B94000-memory.dmp

Filesize
39.6MB

Download
memory/2420-8-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/2420-14-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/2420-15-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/3420-13-0x0000000000400000-0x0000000002B94000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads