tofsee | d3ad591f0689b854fe488a00451cafca5f4497ca7ca77718ee48195ad213d830

Analysis

max time kernel
145s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
31-08-2024 15:45

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General

Target

cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe
Size

10.1MB
MD5

f777ab88e7988a6197689c84bd5c200b
SHA1

9b8f94fe18fcfcbbb6ca1736751d6ca5ee417766
SHA256

cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5
SHA512

9e9730d5ee6629003f29dcd9193ccd09acfa52256439a8408019273fd12b5c87138de4459d659c63a7eb505cc81039a50767ca33adf687a389a40aeb6ba64436
SSDEEP

12288:Iz+wSUpBMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMs:Iz8

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

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\xeziievo = "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
2568	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\xeziievo\ImagePath = "C:\\Windows\\SysWOW64\\xeziievo\\uszvudbs.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2392	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2592	uszvudbs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2592 set thread context of 2392	2592	uszvudbs.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2832	sc.exe
2692	sc.exe
2740	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uszvudbs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1868 wrote to memory of 1064	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	30
PID 1868 wrote to memory of 1064	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	30
PID 1868 wrote to memory of 1064	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	30
PID 1868 wrote to memory of 1064	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	30
PID 1868 wrote to memory of 2064	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	32
PID 1868 wrote to memory of 2064	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	32
PID 1868 wrote to memory of 2064	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	32
PID 1868 wrote to memory of 2064	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	32
PID 1868 wrote to memory of 2832	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	34
PID 1868 wrote to memory of 2832	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	34
PID 1868 wrote to memory of 2832	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	34
PID 1868 wrote to memory of 2832	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	34
PID 1868 wrote to memory of 2692	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	36
PID 1868 wrote to memory of 2692	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	36
PID 1868 wrote to memory of 2692	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	36
PID 1868 wrote to memory of 2692	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	36
PID 1868 wrote to memory of 2740	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	38
PID 1868 wrote to memory of 2740	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	38
PID 1868 wrote to memory of 2740	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	38
PID 1868 wrote to memory of 2740	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	38
PID 2592 wrote to memory of 2392	2592	uszvudbs.exe	41
PID 2592 wrote to memory of 2392	2592	uszvudbs.exe	41
PID 2592 wrote to memory of 2392	2592	uszvudbs.exe	41
PID 2592 wrote to memory of 2392	2592	uszvudbs.exe	41
PID 2592 wrote to memory of 2392	2592	uszvudbs.exe	41
PID 2592 wrote to memory of 2392	2592	uszvudbs.exe	41
PID 1868 wrote to memory of 2568	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	42
PID 1868 wrote to memory of 2568	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	42
PID 1868 wrote to memory of 2568	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	42
PID 1868 wrote to memory of 2568	1868	cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe	42

C:\Users\Admin\AppData\Local\Temp\cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe
"C:\Users\Admin\AppData\Local\Temp\cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xeziievo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uszvudbs.exe" C:\Windows\SysWOW64\xeziievo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xeziievo binPath= "C:\Windows\SysWOW64\xeziievo\uszvudbs.exe /d\"C:\Users\Admin\AppData\Local\Temp\cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xeziievo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xeziievo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- 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:2568

C:\Windows\SysWOW64\xeziievo\uszvudbs.exe
C:\Windows\SysWOW64\xeziievo\uszvudbs.exe /d"C:\Users\Admin\AppData\Local\Temp\cc405e27cf3c45f22534764ed6c2c3d7dc46264b4c275cfc53b3cf6707c211a5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2592
- 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:2392

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\uszvudbs.exe

Filesize
12.0MB

MD5
794106703003568678b6b23f7bc98baa

SHA1
977873f0475e4d428c24979a511b3ec56b5de1e4

SHA256
5f127b797c06a2c3addf4e3308f0443ad36837723defeace90d724c99236c1a2

SHA512
63c8c6cdb79a28d9d8d6844fee72b5e15efe6534c0416f6c58813e75bcc510fc2ff0f3ebb2972373ce8a82fd078bd7408d6e895e175c775674b4a789246a23a4

Download Submit
memory/1868-18-0x00000000050E0000-0x00000000050F1000-memory.dmp

Filesize
68KB

Download
memory/1868-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1868-2-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1868-1-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1868-19-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1868-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2392-12-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2392-9-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2392-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2392-20-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2392-21-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2592-16-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2592-14-0x00000000050E0000-0x00000000050F1000-memory.dmp

Filesize
68KB

Download
memory/2592-8-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads