tofsee | 8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875

General

Target

JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe
Size

154KB
MD5

07d39bc6ccb9cdea500fd8d175b74c67
SHA1

b2e40b713608cce63c15b581feff213dc87954bb
SHA256

8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875
SHA512

907fa8db9a50c94deb74fc221743bb3c781cc8b9bb9128d15ed789776a93fa345ec60d1a1edc6567d4a569eb3dd6879fcbbeb64babe587d2e2b280d6c78945f9
SSDEEP

3072:KzamdKU4X+INwWgwLZMtUo5iOCuNNV00OHz:KzldKT+KwWgwl+7VN/OT

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
3176	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\wmnvsruk\ImagePath = "C:\\Windows\\SysWOW64\\wmnvsruk\\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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe

Deletes itself 1 IoCs

pid	Process
3244	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4116	tfaxeddr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4116 set thread context of 3244	4116	tfaxeddr.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
3600	sc.exe
4180	sc.exe
5016	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

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	tfaxeddr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 3788	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	83
PID 2360 wrote to memory of 3788	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	83
PID 2360 wrote to memory of 3788	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	83
PID 2360 wrote to memory of 4448	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	85
PID 2360 wrote to memory of 4448	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	85
PID 2360 wrote to memory of 4448	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	85
PID 2360 wrote to memory of 3600	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	88
PID 2360 wrote to memory of 3600	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	88
PID 2360 wrote to memory of 3600	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	88
PID 2360 wrote to memory of 4180	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	90
PID 2360 wrote to memory of 4180	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	90
PID 2360 wrote to memory of 4180	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	90
PID 2360 wrote to memory of 5016	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	92
PID 2360 wrote to memory of 5016	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	92
PID 2360 wrote to memory of 5016	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	92
PID 2360 wrote to memory of 3176	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	95
PID 2360 wrote to memory of 3176	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	95
PID 2360 wrote to memory of 3176	2360	JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe	95
PID 4116 wrote to memory of 3244	4116	tfaxeddr.exe	97
PID 4116 wrote to memory of 3244	4116	tfaxeddr.exe	97
PID 4116 wrote to memory of 3244	4116	tfaxeddr.exe	97
PID 4116 wrote to memory of 3244	4116	tfaxeddr.exe	97
PID 4116 wrote to memory of 3244	4116	tfaxeddr.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wmnvsruk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tfaxeddr.exe" C:\Windows\SysWOW64\wmnvsruk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4448
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wmnvsruk binPath= "C:\Windows\SysWOW64\wmnvsruk\tfaxeddr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wmnvsruk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4180
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wmnvsruk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5016
- 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:3176

C:\Windows\SysWOW64\wmnvsruk\tfaxeddr.exe
C:\Windows\SysWOW64\wmnvsruk\tfaxeddr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f174ea90273feb2f39e1c72f9f56a3c9a1b90ff2cbeb235817a0fb454bb8875.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4116
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3244

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
13.5MB

MD5
7698200fc294f9131253e5f38d65705d

SHA1
f62c42663cce11345cbd4787935497098359b3d2

SHA256
338f81e1d0e6eda71c63da89811ec81a0d428403ca6d2b288ab26625e5ad44e6

SHA512
fb673de7d7e28cecdcc812f21ab29775c2b939ba10b2eaef5cdb148e884dd8642303a16ed71bfe3b2ecac9c0457acdde835a32a4b0e8961425b5168d2c176a08

Download Submit
memory/2360-8-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2360-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2360-2-0x0000000000710000-0x0000000000723000-memory.dmp

Filesize
76KB

Download
memory/2360-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2360-9-0x0000000000710000-0x0000000000723000-memory.dmp

Filesize
76KB

Download
memory/2360-1-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/3244-14-0x0000000000E20000-0x0000000000E35000-memory.dmp

Filesize
84KB

Download
memory/3244-16-0x0000000000E20000-0x0000000000E35000-memory.dmp

Filesize
84KB

Download
memory/3244-19-0x0000000000E20000-0x0000000000E35000-memory.dmp

Filesize
84KB

Download
memory/4116-12-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4116-11-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4116-13-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4116-18-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads