tofsee | 00a414b5c275653c18a3cc06ae1d1d9de9e07144f0a6091fa46f51e482a0dae6

Analysis

max time kernel
147s
max time network
146s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30-12-2023 11:51

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General

Target

1796279f87df5f4d66030525b7e8e39c.exe
Size

13.8MB
MD5

1796279f87df5f4d66030525b7e8e39c
SHA1

a45b65e9060ca0d28fd2875b22b8540067db6832
SHA256

00a414b5c275653c18a3cc06ae1d1d9de9e07144f0a6091fa46f51e482a0dae6
SHA512

8b381fd38d8a538a408a29c70d2532403e36caadae46bf20b2f1786cbe1942c67ca310a4faab777b5c576062cd2ecf57c4edac5526cbf96a6e6dd413f2950b06
SSDEEP

3072:8kAgDr/XSqon0LUwWQ2UHxqms7/7btm52yls2LC5J8ZWwoQSwgeb7hiOiPg0tGif:8khDr/+0LUdbKhsMs268UoSwrb7SpG

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\oyrqvgil = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
2896	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\oyrqvgil\ImagePath = "C:\\Windows\\SysWOW64\\oyrqvgil\\wahlnqgs.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2852	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2712	wahlnqgs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2712 set thread context of 2852	2712	wahlnqgs.exe	39

Launches sc.exe 3 IoCs

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

pid	Process
2384	sc.exe
2780	sc.exe
2984	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 2496 wrote to memory of 2508	2496	1796279f87df5f4d66030525b7e8e39c.exe	26
PID 2496 wrote to memory of 2508	2496	1796279f87df5f4d66030525b7e8e39c.exe	26
PID 2496 wrote to memory of 2508	2496	1796279f87df5f4d66030525b7e8e39c.exe	26
PID 2496 wrote to memory of 2508	2496	1796279f87df5f4d66030525b7e8e39c.exe	26
PID 2496 wrote to memory of 2892	2496	1796279f87df5f4d66030525b7e8e39c.exe	31
PID 2496 wrote to memory of 2892	2496	1796279f87df5f4d66030525b7e8e39c.exe	31
PID 2496 wrote to memory of 2892	2496	1796279f87df5f4d66030525b7e8e39c.exe	31
PID 2496 wrote to memory of 2892	2496	1796279f87df5f4d66030525b7e8e39c.exe	31
PID 2496 wrote to memory of 2384	2496	1796279f87df5f4d66030525b7e8e39c.exe	33
PID 2496 wrote to memory of 2384	2496	1796279f87df5f4d66030525b7e8e39c.exe	33
PID 2496 wrote to memory of 2384	2496	1796279f87df5f4d66030525b7e8e39c.exe	33
PID 2496 wrote to memory of 2384	2496	1796279f87df5f4d66030525b7e8e39c.exe	33
PID 2496 wrote to memory of 2780	2496	1796279f87df5f4d66030525b7e8e39c.exe	35
PID 2496 wrote to memory of 2780	2496	1796279f87df5f4d66030525b7e8e39c.exe	35
PID 2496 wrote to memory of 2780	2496	1796279f87df5f4d66030525b7e8e39c.exe	35
PID 2496 wrote to memory of 2780	2496	1796279f87df5f4d66030525b7e8e39c.exe	35
PID 2496 wrote to memory of 2984	2496	1796279f87df5f4d66030525b7e8e39c.exe	37
PID 2496 wrote to memory of 2984	2496	1796279f87df5f4d66030525b7e8e39c.exe	37
PID 2496 wrote to memory of 2984	2496	1796279f87df5f4d66030525b7e8e39c.exe	37
PID 2496 wrote to memory of 2984	2496	1796279f87df5f4d66030525b7e8e39c.exe	37
PID 2712 wrote to memory of 2852	2712	wahlnqgs.exe	39
PID 2712 wrote to memory of 2852	2712	wahlnqgs.exe	39
PID 2712 wrote to memory of 2852	2712	wahlnqgs.exe	39
PID 2712 wrote to memory of 2852	2712	wahlnqgs.exe	39
PID 2712 wrote to memory of 2852	2712	wahlnqgs.exe	39
PID 2496 wrote to memory of 2896	2496	1796279f87df5f4d66030525b7e8e39c.exe	41
PID 2496 wrote to memory of 2896	2496	1796279f87df5f4d66030525b7e8e39c.exe	41
PID 2496 wrote to memory of 2896	2496	1796279f87df5f4d66030525b7e8e39c.exe	41
PID 2496 wrote to memory of 2896	2496	1796279f87df5f4d66030525b7e8e39c.exe	41
PID 2712 wrote to memory of 2852	2712	wahlnqgs.exe	39

C:\Users\Admin\AppData\Local\Temp\1796279f87df5f4d66030525b7e8e39c.exe
"C:\Users\Admin\AppData\Local\Temp\1796279f87df5f4d66030525b7e8e39c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oyrqvgil\
  2⤵
  PID:2508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wahlnqgs.exe" C:\Windows\SysWOW64\oyrqvgil\
  2⤵
  PID:2892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oyrqvgil binPath= "C:\Windows\SysWOW64\oyrqvgil\wahlnqgs.exe /d\"C:\Users\Admin\AppData\Local\Temp\1796279f87df5f4d66030525b7e8e39c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oyrqvgil "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oyrqvgil
  2⤵
  - Launches sc.exe
  PID:2984
- 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:2896

C:\Windows\SysWOW64\oyrqvgil\wahlnqgs.exe
C:\Windows\SysWOW64\oyrqvgil\wahlnqgs.exe /d"C:\Users\Admin\AppData\Local\Temp\1796279f87df5f4d66030525b7e8e39c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2852

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 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

memory/2496-1-0x0000000003420000-0x0000000003520000-memory.dmp

Filesize
1024KB

Download
memory/2496-4-0x0000000000400000-0x000000000324F000-memory.dmp

Filesize
46.3MB

Download
memory/2496-13-0x0000000000400000-0x000000000324F000-memory.dmp

Filesize
46.3MB

Download
memory/2496-3-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2712-17-0x0000000000400000-0x000000000324F000-memory.dmp

Filesize
46.3MB

Download
memory/2712-18-0x0000000000400000-0x000000000324F000-memory.dmp

Filesize
46.3MB

Download
memory/2712-10-0x00000000033A0000-0x00000000034A0000-memory.dmp

Filesize
1024KB

Download
memory/2712-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2852-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2852-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2852-9-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2852-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2852-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2852-22-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads