tofsee | 5d7e40a20b0b63e723ca8e0e4da9d2d270407840030b4f91fbc2cf1625b3b04f

Analysis

max time kernel
149s
max time network
122s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 19:19

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General

Target

2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe
Size

14.7MB
MD5

9a334b379f1ed799035916ab0324161e
SHA1

28c9f99a05e54c1323799fcbef2d7f74b8604aa3
SHA256

5d7e40a20b0b63e723ca8e0e4da9d2d270407840030b4f91fbc2cf1625b3b04f
SHA512

9528d0ec1f8abe3c7ffe4dfdece28ba75004508007ac60767d15ae62deeb0a9cbd31eafa9581581743222cf22c4690379145d3ff77b6f62f3dd41d28885bde9c
SSDEEP

3072:2LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:fOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
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\pgvmyaih = "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
2872	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\pgvmyaih\ImagePath = "C:\\Windows\\SysWOW64\\pgvmyaih\\zttkvevx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2904	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2740	zttkvevx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2740 set thread context of 2904	2740	zttkvevx.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2260	sc.exe
2512	sc.exe
2064	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	zttkvevx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 2468	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	30
PID 2420 wrote to memory of 2468	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	30
PID 2420 wrote to memory of 2468	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	30
PID 2420 wrote to memory of 2468	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	30
PID 2420 wrote to memory of 2384	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	32
PID 2420 wrote to memory of 2384	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	32
PID 2420 wrote to memory of 2384	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	32
PID 2420 wrote to memory of 2384	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	32
PID 2420 wrote to memory of 2512	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	34
PID 2420 wrote to memory of 2512	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	34
PID 2420 wrote to memory of 2512	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	34
PID 2420 wrote to memory of 2512	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	34
PID 2420 wrote to memory of 2064	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	36
PID 2420 wrote to memory of 2064	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	36
PID 2420 wrote to memory of 2064	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	36
PID 2420 wrote to memory of 2064	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	36
PID 2420 wrote to memory of 2260	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	38
PID 2420 wrote to memory of 2260	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	38
PID 2420 wrote to memory of 2260	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	38
PID 2420 wrote to memory of 2260	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	38
PID 2740 wrote to memory of 2904	2740	zttkvevx.exe	41
PID 2740 wrote to memory of 2904	2740	zttkvevx.exe	41
PID 2740 wrote to memory of 2904	2740	zttkvevx.exe	41
PID 2740 wrote to memory of 2904	2740	zttkvevx.exe	41
PID 2740 wrote to memory of 2904	2740	zttkvevx.exe	41
PID 2740 wrote to memory of 2904	2740	zttkvevx.exe	41
PID 2420 wrote to memory of 2872	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	42
PID 2420 wrote to memory of 2872	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	42
PID 2420 wrote to memory of 2872	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	42
PID 2420 wrote to memory of 2872	2420	2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pgvmyaih\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2468
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zttkvevx.exe" C:\Windows\SysWOW64\pgvmyaih\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pgvmyaih binPath= "C:\Windows\SysWOW64\pgvmyaih\zttkvevx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2512
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pgvmyaih "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pgvmyaih
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2260
- 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:2872

C:\Windows\SysWOW64\pgvmyaih\zttkvevx.exe
C:\Windows\SysWOW64\pgvmyaih\zttkvevx.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-31_9a334b379f1ed799035916ab0324161e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2740
- 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:2904

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\zttkvevx.exe

Filesize
14.1MB

MD5
532ea652f2d76349a08b65447667a24a

SHA1
e6c75085d02140d5379175f8fa03f9f9594ae0f6

SHA256
deae8dcc75896d07368742968cc06c39163905c7cd53ccc7580c87a3f5e242b9

SHA512
b48574d8051bbd568082eeeea85491f92810cac8c20290d2dae686a4e6fd7e02aacb35f2e942b3e6a67ca60f232f02e3b390c4ed634502d4b331f2f31aa1fb4c

Download Submit
memory/2420-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2420-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2420-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2420-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2420-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2420-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2740-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2904-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2904-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2904-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2904-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2904-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads