tofsee | acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4

General

Target

JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe
Size

166KB
MD5

c98ac74e312f4db649bee71480ccd6fb
SHA1

6344d3f82ad4f1ca3a0474ed972865267e11ad4e
SHA256

acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4
SHA512

eb037e296abcc88db7e804096ff1eb68303c9694d4ac41356f0656050acc9fee0b5a7b1a8f7b1b58759942ec1430e659b03cf241351a659394a288d4db2c122c
SSDEEP

3072:eaMIRpw+UbMXI/C06vRLzFZ/S5XJNCa5xuv+fXyX:RxUgv0657/S5puW/

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
4964	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\xufjqss\ImagePath = "C:\\Windows\\SysWOW64\\xufjqss\\tfrzzkzh.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_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe

Deletes itself 1 IoCs

pid	Process
3108	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3172	tfrzzkzh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3172 set thread context of 3108	3172	tfrzzkzh.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
5112	sc.exe
3836	sc.exe
3524	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
5076	3516	WerFault.exe	81
2760	3172	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	cmd.exe
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	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tfrzzkzh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3516 wrote to memory of 1836	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	82
PID 3516 wrote to memory of 1836	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	82
PID 3516 wrote to memory of 1836	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	82
PID 3516 wrote to memory of 3680	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	84
PID 3516 wrote to memory of 3680	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	84
PID 3516 wrote to memory of 3680	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	84
PID 3516 wrote to memory of 5112	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	86
PID 3516 wrote to memory of 5112	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	86
PID 3516 wrote to memory of 5112	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	86
PID 3516 wrote to memory of 3836	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	88
PID 3516 wrote to memory of 3836	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	88
PID 3516 wrote to memory of 3836	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	88
PID 3516 wrote to memory of 3524	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	90
PID 3516 wrote to memory of 3524	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	90
PID 3516 wrote to memory of 3524	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	90
PID 3516 wrote to memory of 4964	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	93
PID 3516 wrote to memory of 4964	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	93
PID 3516 wrote to memory of 4964	3516	JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe	93
PID 3172 wrote to memory of 3108	3172	tfrzzkzh.exe	98
PID 3172 wrote to memory of 3108	3172	tfrzzkzh.exe	98
PID 3172 wrote to memory of 3108	3172	tfrzzkzh.exe	98
PID 3172 wrote to memory of 3108	3172	tfrzzkzh.exe	98
PID 3172 wrote to memory of 3108	3172	tfrzzkzh.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xufjqss\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tfrzzkzh.exe" C:\Windows\SysWOW64\xufjqss\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xufjqss binPath= "C:\Windows\SysWOW64\xufjqss\tfrzzkzh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5112
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xufjqss "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xufjqss
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3524
- 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:4964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 1036
  2⤵
  - Program crash
  PID:5076

C:\Windows\SysWOW64\xufjqss\tfrzzkzh.exe
C:\Windows\SysWOW64\xufjqss\tfrzzkzh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_acbd0cb684e9de0adb01111e9bbbc1eee0152946829aae3325c9ab9741bc33f4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3172 -s 228
  2⤵
  - Program crash
  PID:2760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3516 -ip 3516
1⤵
PID:5080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 3172 -ip 3172
1⤵
PID:3588

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\tfrzzkzh.exe

Filesize
14.8MB

MD5
316f650998c3f84fa4dec25a3866fddd

SHA1
4d07eea91b67ba95435e37c13903b267392d2f3d

SHA256
0a66b6644bc578ca80153a0545af96da9a9a557e9ce290bbe08dfbe63d8ed14d

SHA512
dff95959b40e3825fdac091430bbd75e3664d85b7626a2de9dd21a061a5fc68fb3306442377a870bc55ddb809ef6911efd2893cb72fed64e5a1b856124c3c442

Download Submit
memory/3108-14-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/3108-17-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/3108-16-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/3172-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3172-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3172-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3172-18-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3516-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3516-9-0x00000000020C0000-0x00000000020D3000-memory.dmp

Filesize
76KB

Download
memory/3516-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/3516-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3516-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3516-2-0x00000000020C0000-0x00000000020D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads