tofsee | 3267c7ed315c80d9adacd52955f0ed95c87ff53254fa2a4c488b954f18d69146

Analysis

max time kernel
146s
max time network
145s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
06/03/2024, 05:50

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General

Target

b6aa339961e8256355772ee4a76272a8.exe
Size

14.4MB
MD5

b6aa339961e8256355772ee4a76272a8
SHA1

a5117a6592043a309702243c61cace3775cc34ea
SHA256

3267c7ed315c80d9adacd52955f0ed95c87ff53254fa2a4c488b954f18d69146
SHA512

e72c0e909fdf2479fc0d5f238dc6188e819f28006763a93601e7be46cc478fe5e96ac64731bb788ed0c6c3860e697bd36e6af26da690ed0842ba8ada519dfa28
SSDEEP

24576:Ngdy5yNM4444444444444444444444444444444444444444444444444444444D:

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\dpanaxo = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2236	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\dpanaxo\ImagePath = "C:\\Windows\\SysWOW64\\dpanaxo\\evvoedes.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2488	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2684	evvoedes.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2684 set thread context of 2488	2684	evvoedes.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2012	sc.exe
2544	sc.exe
2660	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1244 wrote to memory of 1164	1244	b6aa339961e8256355772ee4a76272a8.exe	28
PID 1244 wrote to memory of 1164	1244	b6aa339961e8256355772ee4a76272a8.exe	28
PID 1244 wrote to memory of 1164	1244	b6aa339961e8256355772ee4a76272a8.exe	28
PID 1244 wrote to memory of 1164	1244	b6aa339961e8256355772ee4a76272a8.exe	28
PID 1244 wrote to memory of 1048	1244	b6aa339961e8256355772ee4a76272a8.exe	30
PID 1244 wrote to memory of 1048	1244	b6aa339961e8256355772ee4a76272a8.exe	30
PID 1244 wrote to memory of 1048	1244	b6aa339961e8256355772ee4a76272a8.exe	30
PID 1244 wrote to memory of 1048	1244	b6aa339961e8256355772ee4a76272a8.exe	30
PID 1244 wrote to memory of 2012	1244	b6aa339961e8256355772ee4a76272a8.exe	32
PID 1244 wrote to memory of 2012	1244	b6aa339961e8256355772ee4a76272a8.exe	32
PID 1244 wrote to memory of 2012	1244	b6aa339961e8256355772ee4a76272a8.exe	32
PID 1244 wrote to memory of 2012	1244	b6aa339961e8256355772ee4a76272a8.exe	32
PID 1244 wrote to memory of 2544	1244	b6aa339961e8256355772ee4a76272a8.exe	34
PID 1244 wrote to memory of 2544	1244	b6aa339961e8256355772ee4a76272a8.exe	34
PID 1244 wrote to memory of 2544	1244	b6aa339961e8256355772ee4a76272a8.exe	34
PID 1244 wrote to memory of 2544	1244	b6aa339961e8256355772ee4a76272a8.exe	34
PID 1244 wrote to memory of 2660	1244	b6aa339961e8256355772ee4a76272a8.exe	36
PID 1244 wrote to memory of 2660	1244	b6aa339961e8256355772ee4a76272a8.exe	36
PID 1244 wrote to memory of 2660	1244	b6aa339961e8256355772ee4a76272a8.exe	36
PID 1244 wrote to memory of 2660	1244	b6aa339961e8256355772ee4a76272a8.exe	36
PID 1244 wrote to memory of 2236	1244	b6aa339961e8256355772ee4a76272a8.exe	39
PID 1244 wrote to memory of 2236	1244	b6aa339961e8256355772ee4a76272a8.exe	39
PID 1244 wrote to memory of 2236	1244	b6aa339961e8256355772ee4a76272a8.exe	39
PID 1244 wrote to memory of 2236	1244	b6aa339961e8256355772ee4a76272a8.exe	39
PID 2684 wrote to memory of 2488	2684	evvoedes.exe	41
PID 2684 wrote to memory of 2488	2684	evvoedes.exe	41
PID 2684 wrote to memory of 2488	2684	evvoedes.exe	41
PID 2684 wrote to memory of 2488	2684	evvoedes.exe	41
PID 2684 wrote to memory of 2488	2684	evvoedes.exe	41
PID 2684 wrote to memory of 2488	2684	evvoedes.exe	41

C:\Users\Admin\AppData\Local\Temp\b6aa339961e8256355772ee4a76272a8.exe
"C:\Users\Admin\AppData\Local\Temp\b6aa339961e8256355772ee4a76272a8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dpanaxo\
  2⤵
  PID:1164
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\evvoedes.exe" C:\Windows\SysWOW64\dpanaxo\
  2⤵
  PID:1048
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dpanaxo binPath= "C:\Windows\SysWOW64\dpanaxo\evvoedes.exe /d\"C:\Users\Admin\AppData\Local\Temp\b6aa339961e8256355772ee4a76272a8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dpanaxo "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dpanaxo
  2⤵
  - Launches sc.exe
  PID:2660
- 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
  PID:2236

C:\Windows\SysWOW64\dpanaxo\evvoedes.exe
C:\Windows\SysWOW64\dpanaxo\evvoedes.exe /d"C:\Users\Admin\AppData\Local\Temp\b6aa339961e8256355772ee4a76272a8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\evvoedes.exe

Filesize
13.8MB

MD5
25e8e0c8332c6d99079d158e2c86e2f4

SHA1
43144022fbd48de8ad8e712b11b1e48b728dd921

SHA256
cd5f393f2dc22eff65b1e54d1933b5dc284a76be3f9f3d4ec9de5cc76f421dbc

SHA512
da34181d0e89244071ceebdbe918e4cf0520958563675e77f422d19ee39f4bd0515e20b0c9296f9e5a78c02b1ce7ba80979fb3e67874169fafdebb3cf390a14b

Download Submit
memory/1244-3-0x00000000003B0000-0x00000000003C3000-memory.dmp

Filesize
76KB

Download
memory/1244-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/1244-4-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1244-8-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2488-14-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2488-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2488-11-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2488-18-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2488-19-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2488-20-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2488-21-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2684-10-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2684-9-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/2684-15-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads