tofsee | 6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
21-12-2024 17:48

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General

Target

6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe
Size

255KB
MD5

508f7fb1894f6b62f1be00a2f1c44599
SHA1

6249464295b0424bb74726ea8148878cfb295692
SHA256

6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02
SHA512

eba6d8b0d73abff9955d7025cef7c53221a2dba3667ff199a87d3edec62e781440820026432f73e1b20353f95ab9b315b7c9d9388f2655705889ceda75d7c2ca
SSDEEP

6144:iorUJvgpuP4t0XrOyc79RAU5SJu9WPBshHviRpHFO:iq64puP4tMzyRAU5Mu9WWhHvm6

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\rgefyyeq = "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
3024	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\rgefyyeq\ImagePath = "C:\\Windows\\SysWOW64\\rgefyyeq\\uzvnloa.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2744	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2848	uzvnloa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2848 set thread context of 2744	2848	uzvnloa.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
3000	sc.exe
2984	sc.exe
2844	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uzvnloa.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 392 wrote to memory of 1184	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	29
PID 392 wrote to memory of 1184	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	29
PID 392 wrote to memory of 1184	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	29
PID 392 wrote to memory of 1184	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	29
PID 392 wrote to memory of 780	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	31
PID 392 wrote to memory of 780	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	31
PID 392 wrote to memory of 780	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	31
PID 392 wrote to memory of 780	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	31
PID 392 wrote to memory of 2984	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	33
PID 392 wrote to memory of 2984	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	33
PID 392 wrote to memory of 2984	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	33
PID 392 wrote to memory of 2984	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	33
PID 392 wrote to memory of 2844	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	35
PID 392 wrote to memory of 2844	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	35
PID 392 wrote to memory of 2844	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	35
PID 392 wrote to memory of 2844	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	35
PID 392 wrote to memory of 3000	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	37
PID 392 wrote to memory of 3000	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	37
PID 392 wrote to memory of 3000	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	37
PID 392 wrote to memory of 3000	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	37
PID 392 wrote to memory of 3024	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	39
PID 392 wrote to memory of 3024	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	39
PID 392 wrote to memory of 3024	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	39
PID 392 wrote to memory of 3024	392	6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe	39
PID 2848 wrote to memory of 2744	2848	uzvnloa.exe	42
PID 2848 wrote to memory of 2744	2848	uzvnloa.exe	42
PID 2848 wrote to memory of 2744	2848	uzvnloa.exe	42
PID 2848 wrote to memory of 2744	2848	uzvnloa.exe	42
PID 2848 wrote to memory of 2744	2848	uzvnloa.exe	42
PID 2848 wrote to memory of 2744	2848	uzvnloa.exe	42

C:\Users\Admin\AppData\Local\Temp\6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe
"C:\Users\Admin\AppData\Local\Temp\6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rgefyyeq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1184
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uzvnloa.exe" C:\Windows\SysWOW64\rgefyyeq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rgefyyeq binPath= "C:\Windows\SysWOW64\rgefyyeq\uzvnloa.exe /d\"C:\Users\Admin\AppData\Local\Temp\6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rgefyyeq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rgefyyeq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3000
- 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:3024

C:\Windows\SysWOW64\rgefyyeq\uzvnloa.exe
C:\Windows\SysWOW64\rgefyyeq\uzvnloa.exe /d"C:\Users\Admin\AppData\Local\Temp\6ee1acf65033f976c454076e7bfffdae7e7a0c9fa86be23d09dcec6dd2b6df02.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2848
- 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:2744

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\uzvnloa.exe

Filesize
13.9MB

MD5
3d57a78b3d537ce8b23215af119c47e2

SHA1
310d11a11ec762f5b3ea7a5b33031dc7ebf17402

SHA256
c3b2eec32d16d0ee8ccf14dbb01c7f838b4f9b4e14ce31eba2d170bdb75e4862

SHA512
d6edd5349c5b5c84cdfe6edb9a640cd9ec740072d5f4558703dc9741923c7f9107225a7c17943fdfe323704e352ede3259079a0a22b12d282257427be0cf9d95

Download Submit
memory/392-6-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/392-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/392-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/392-7-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/392-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/392-1-0x0000000000CB0000-0x0000000000DB0000-memory.dmp

Filesize
1024KB

Download
memory/2744-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2848-17-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads