tofsee | c36c064e1cf65d9e7acdd02967eb67475f83eb722efe3fd8e1767ccde84b32d1

Analysis

max time kernel
151s
max time network
122s
platform
windows7_x64
resource
win7v20201028
submitted
14/12/2020, 13:42

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
13dc59ee41ac76115d4fa94d41ea9f4e.exe
Size 13.6MB
Sample201214-k7w8bpbpjs
SHA256 c36c064e1cf65d9e7acdd02967eb67475f83eb722efe3fd8e1767ccde84b32d1
MD5 13dc59ee41ac76115d4fa94d41ea9f4e
SHA1 63176b69b4a959e85ef1c391e4e090048e60a127
SHA512 f1a9f58f353bd5b265ac2b8461e740b2cd43b447a37acddb9f401e139f352259b711fd4f64abfb8d4ac7390f70cfe6e72c36c04c6b762868d92d0c7081df8c03
MD5 SHA1 SHA512

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Creates new service(s) 1 TTPs
persistence

New Service
T1050

Executes dropped EXE 1 IoCs

pid	Process
516	vmfipcon.exe

Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Deletes itself 1 IoCs

pid	Process
1456	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 516 set thread context of 1456	516	vmfipcon.exe	40

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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 800 wrote to memory of 1832	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	26
PID 800 wrote to memory of 1832	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	26
PID 800 wrote to memory of 1832	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	26
PID 800 wrote to memory of 1832	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	26
PID 800 wrote to memory of 1500	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	28
PID 800 wrote to memory of 1500	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	28
PID 800 wrote to memory of 1500	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	28
PID 800 wrote to memory of 1500	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	28
PID 800 wrote to memory of 1984	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	30
PID 800 wrote to memory of 1984	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	30
PID 800 wrote to memory of 1984	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	30
PID 800 wrote to memory of 1984	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	30
PID 800 wrote to memory of 1752	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	33
PID 800 wrote to memory of 1752	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	33
PID 800 wrote to memory of 1752	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	33
PID 800 wrote to memory of 1752	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	33
PID 800 wrote to memory of 1120	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	35
PID 800 wrote to memory of 1120	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	35
PID 800 wrote to memory of 1120	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	35
PID 800 wrote to memory of 1120	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	35
PID 800 wrote to memory of 836	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	37
PID 800 wrote to memory of 836	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	37
PID 800 wrote to memory of 836	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	37
PID 800 wrote to memory of 836	800	13dc59ee41ac76115d4fa94d41ea9f4e.exe	37
PID 516 wrote to memory of 1456	516	vmfipcon.exe	40
PID 516 wrote to memory of 1456	516	vmfipcon.exe	40
PID 516 wrote to memory of 1456	516	vmfipcon.exe	40
PID 516 wrote to memory of 1456	516	vmfipcon.exe	40
PID 516 wrote to memory of 1456	516	vmfipcon.exe	40
PID 516 wrote to memory of 1456	516	vmfipcon.exe	40

C:\Users\Admin\AppData\Local\Temp\13dc59ee41ac76115d4fa94d41ea9f4e.exe
"C:\Users\Admin\AppData\Local\Temp\13dc59ee41ac76115d4fa94d41ea9f4e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gfxfzazd\
  2⤵
  PID:1832
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vmfipcon.exe" C:\Windows\SysWOW64\gfxfzazd\
  2⤵
  PID:1500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gfxfzazd binPath= "C:\Windows\SysWOW64\gfxfzazd\vmfipcon.exe /d\"C:\Users\Admin\AppData\Local\Temp\13dc59ee41ac76115d4fa94d41ea9f4e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  PID:1984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gfxfzazd "wifi internet conection"
  2⤵
  PID:1752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gfxfzazd
  2⤵
  PID:1120
- 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⤵
  PID:836

C:\Windows\SysWOW64\gfxfzazd\vmfipcon.exe
C:\Windows\SysWOW64\gfxfzazd\vmfipcon.exe /d"C:\Users\Admin\AppData\Local\Temp\13dc59ee41ac76115d4fa94d41ea9f4e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:516
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Deletes itself
  PID:1456

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

New Service

T1050

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

New Service

T1050

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1456-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Download