tofsee | ab29fd907470b60139c37b93d086f0b520e4edcf0e485ab90358baee202ba190

Analysis

max time kernel
144s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 23:39

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General

Target

20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe
Size

15.0MB
MD5

cb445682e33a6b13091fb9d6a70c2120
SHA1

8ebeabd69b3c978b08d95fa81ecfdb17c8d3ce15
SHA256

ab29fd907470b60139c37b93d086f0b520e4edcf0e485ab90358baee202ba190
SHA512

420f357ea5e44deb176d70a69e5e4e2c96c5718742317572911aaa96d872e21f80dfd054c20e2c87ac11c6af99376f692c07678e6840604b9c28df04816a3556
SSDEEP

6144:j+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:j+r1IeSXMXc7LlxWV4Ug97GZ+ej

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\clvkxfet = "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
3060	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\clvkxfet\ImagePath = "C:\\Windows\\SysWOW64\\clvkxfet\\ziaziuyp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2824	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	ziaziuyp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 2824	2820	ziaziuyp.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2228	sc.exe
1308	sc.exe
2096	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 opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\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	ziaziuyp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240921cb445682e33a6b13091fb9d6a70c2120mafia.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	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 1732 wrote to memory of 1700	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	30
PID 1732 wrote to memory of 1700	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	30
PID 1732 wrote to memory of 1700	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	30
PID 1732 wrote to memory of 1700	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	30
PID 1732 wrote to memory of 2108	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	32
PID 1732 wrote to memory of 2108	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	32
PID 1732 wrote to memory of 2108	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	32
PID 1732 wrote to memory of 2108	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	32
PID 1732 wrote to memory of 1308	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	34
PID 1732 wrote to memory of 1308	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	34
PID 1732 wrote to memory of 1308	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	34
PID 1732 wrote to memory of 1308	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	34
PID 1732 wrote to memory of 2096	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	36
PID 1732 wrote to memory of 2096	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	36
PID 1732 wrote to memory of 2096	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	36
PID 1732 wrote to memory of 2096	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	36
PID 1732 wrote to memory of 2228	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	38
PID 1732 wrote to memory of 2228	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	38
PID 1732 wrote to memory of 2228	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	38
PID 1732 wrote to memory of 2228	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	38
PID 2820 wrote to memory of 2824	2820	ziaziuyp.exe	41
PID 2820 wrote to memory of 2824	2820	ziaziuyp.exe	41
PID 2820 wrote to memory of 2824	2820	ziaziuyp.exe	41
PID 2820 wrote to memory of 2824	2820	ziaziuyp.exe	41
PID 2820 wrote to memory of 2824	2820	ziaziuyp.exe	41
PID 2820 wrote to memory of 2824	2820	ziaziuyp.exe	41
PID 1732 wrote to memory of 3060	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	42
PID 1732 wrote to memory of 3060	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	42
PID 1732 wrote to memory of 3060	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	42
PID 1732 wrote to memory of 3060	1732	20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe
"C:\Users\Admin\AppData\Local\Temp\20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\clvkxfet\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ziaziuyp.exe" C:\Windows\SysWOW64\clvkxfet\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create clvkxfet binPath= "C:\Windows\SysWOW64\clvkxfet\ziaziuyp.exe /d\"C:\Users\Admin\AppData\Local\Temp\20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description clvkxfet "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start clvkxfet
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2228
- 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:3060

C:\Windows\SysWOW64\clvkxfet\ziaziuyp.exe
C:\Windows\SysWOW64\clvkxfet\ziaziuyp.exe /d"C:\Users\Admin\AppData\Local\Temp\20240921cb445682e33a6b13091fb9d6a70c2120mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- 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:2824

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\ziaziuyp.exe

Filesize
13.6MB

MD5
e1221d59a175b6fe85c4b04e9d5249ac

SHA1
fa58d48093749dbeae0f9db490b51eb9075ce891

SHA256
d011b2d55937a95146391aee7636e3a6782a22d30af638dcbd95c20823839e24

SHA512
e1c54ce4301305f13d0c1b399a2782841c3d0e51db5e4b69596a5c4e47639d995b3b2710d159f842c46e689169fc8fc26179ad516d2975c32540d64db7f24a47

Download Submit
memory/1732-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/1732-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1732-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1732-14-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/1732-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2820-12-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2824-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2824-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2824-7-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2824-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2824-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads