tofsee | 2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6e

Analysis

max time kernel
117s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 08:28

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General

Target

2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe
Size

355KB
MD5

4ade9bccd0b2b9447ff9dbb9c3880830
SHA1

52aef011732da2f9fea1ee555d370a119749ccd0
SHA256

2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6e
SHA512

06103380806a02eb19d3f102d6b69f43f3483dc1db6fa48ca53ec8d077b4a6fa35dbb1fc6c438c51ef45f10765a06d2497b0f8d38ae8ac8049106f1bd99c33e1
SSDEEP

6144:hvo5HY2USvj5R/i2gCiX0oH1VmyerYDn1QqaFZczX3V5wRjejHH5TAb:hA5HY2USr5R/i2gCy0oVVmyerK1/aFZp

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation 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
Tofsee family
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\vtajftor = "0"	svchost.exe

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
2784	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\vtajftor\ImagePath = "C:\\Windows\\SysWOW64\\vtajftor\\nugtcpqk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2900	nugtcpqk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2900 set thread context of 2796	2900	nugtcpqk.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2308	sc.exe
2736	sc.exe
2832	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe
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	nugtcpqk.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 2552	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	30
PID 1632 wrote to memory of 2552	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	30
PID 1632 wrote to memory of 2552	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	30
PID 1632 wrote to memory of 2552	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	30
PID 1632 wrote to memory of 1404	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	32
PID 1632 wrote to memory of 1404	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	32
PID 1632 wrote to memory of 1404	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	32
PID 1632 wrote to memory of 1404	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	32
PID 1632 wrote to memory of 2308	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	34
PID 1632 wrote to memory of 2308	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	34
PID 1632 wrote to memory of 2308	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	34
PID 1632 wrote to memory of 2308	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	34
PID 1632 wrote to memory of 2736	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	36
PID 1632 wrote to memory of 2736	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	36
PID 1632 wrote to memory of 2736	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	36
PID 1632 wrote to memory of 2736	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	36
PID 1632 wrote to memory of 2832	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	38
PID 1632 wrote to memory of 2832	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	38
PID 1632 wrote to memory of 2832	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	38
PID 1632 wrote to memory of 2832	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	38
PID 1632 wrote to memory of 2784	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	41
PID 1632 wrote to memory of 2784	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	41
PID 1632 wrote to memory of 2784	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	41
PID 1632 wrote to memory of 2784	1632	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	41
PID 2900 wrote to memory of 2796	2900	nugtcpqk.exe	43
PID 2900 wrote to memory of 2796	2900	nugtcpqk.exe	43
PID 2900 wrote to memory of 2796	2900	nugtcpqk.exe	43
PID 2900 wrote to memory of 2796	2900	nugtcpqk.exe	43
PID 2900 wrote to memory of 2796	2900	nugtcpqk.exe	43
PID 2900 wrote to memory of 2796	2900	nugtcpqk.exe	43

C:\Users\Admin\AppData\Local\Temp\2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe
"C:\Users\Admin\AppData\Local\Temp\2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vtajftor\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nugtcpqk.exe" C:\Windows\SysWOW64\vtajftor\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vtajftor binPath= "C:\Windows\SysWOW64\vtajftor\nugtcpqk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vtajftor "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vtajftor
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- 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:2784

C:\Windows\SysWOW64\vtajftor\nugtcpqk.exe
C:\Windows\SysWOW64\vtajftor\nugtcpqk.exe /d"C:\Users\Admin\AppData\Local\Temp\2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.0MB

MD5
d7aa5fc31484eb46c6ca8b6e5355a582

SHA1
05ef8c2438e29d0033c1e9223b0f2be8339eb41b

SHA256
b0ab5430fad34b9c320bcfbbf574da0cb4eb110afda6e9b0ea99fd78e0546e39

SHA512
dec7df40cecb8b86bf7933869aeff5a93b9c7332d0c83109ba58e446ea7f4a1ee27c4ba9a8def8f8c0734ba4f13c399509c97523862921211075d91c8a9a974d

Download Submit
memory/1632-8-0x0000000000400000-0x00000000016CE000-memory.dmp

Filesize
18.8MB

Download
memory/1632-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1632-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1632-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1632-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1632-1-0x00000000017D0000-0x00000000018D0000-memory.dmp

Filesize
1024KB

Download
memory/2796-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2796-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2796-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2796-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2796-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2900-16-0x0000000000400000-0x00000000016CE000-memory.dmp

Filesize
18.8MB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads