tofsee | 2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 11:43

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General

Target

2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe
Size

10.1MB
MD5

0e5a9c35b3d357763c7a52db54daf211
SHA1

65bd31bc2fc54a359e9eb1a7abb03bc71d2e7c2b
SHA256

2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889
SHA512

3ec7ba172ed8fe2e9edd0c024b92ff00a9deb619ea16cff28ff7a49eacbd0b9139c03103da2d163d1305221b5016f181dd871cebdce75bfd9fed8586486e1520
SSDEEP

49152:pkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH/:q

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.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\mzzlybai = "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
2928	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\mzzlybai\ImagePath = "C:\\Windows\\SysWOW64\\mzzlybai\\lmkuxqvg.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1652	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2888	lmkuxqvg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2888 set thread context of 1652	2888	lmkuxqvg.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
1668	sc.exe
2220	sc.exe
2812	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lmkuxqvg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.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	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 2404 wrote to memory of 2396	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	31
PID 2404 wrote to memory of 2396	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	31
PID 2404 wrote to memory of 2396	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	31
PID 2404 wrote to memory of 2396	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	31
PID 2404 wrote to memory of 2592	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	33
PID 2404 wrote to memory of 2592	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	33
PID 2404 wrote to memory of 2592	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	33
PID 2404 wrote to memory of 2592	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	33
PID 2404 wrote to memory of 1668	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	35
PID 2404 wrote to memory of 1668	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	35
PID 2404 wrote to memory of 1668	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	35
PID 2404 wrote to memory of 1668	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	35
PID 2404 wrote to memory of 2220	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	37
PID 2404 wrote to memory of 2220	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	37
PID 2404 wrote to memory of 2220	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	37
PID 2404 wrote to memory of 2220	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	37
PID 2404 wrote to memory of 2812	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	39
PID 2404 wrote to memory of 2812	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	39
PID 2404 wrote to memory of 2812	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	39
PID 2404 wrote to memory of 2812	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	39
PID 2404 wrote to memory of 2928	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	42
PID 2404 wrote to memory of 2928	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	42
PID 2404 wrote to memory of 2928	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	42
PID 2404 wrote to memory of 2928	2404	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	42
PID 2888 wrote to memory of 1652	2888	lmkuxqvg.exe	44
PID 2888 wrote to memory of 1652	2888	lmkuxqvg.exe	44
PID 2888 wrote to memory of 1652	2888	lmkuxqvg.exe	44
PID 2888 wrote to memory of 1652	2888	lmkuxqvg.exe	44
PID 2888 wrote to memory of 1652	2888	lmkuxqvg.exe	44
PID 2888 wrote to memory of 1652	2888	lmkuxqvg.exe	44

C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe
"C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mzzlybai\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lmkuxqvg.exe" C:\Windows\SysWOW64\mzzlybai\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2592
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mzzlybai binPath= "C:\Windows\SysWOW64\mzzlybai\lmkuxqvg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mzzlybai "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mzzlybai
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2812
- 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:2928

C:\Windows\SysWOW64\mzzlybai\lmkuxqvg.exe
C:\Windows\SysWOW64\mzzlybai\lmkuxqvg.exe /d"C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2888
- 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:1652

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\lmkuxqvg.exe

Filesize
11.8MB

MD5
a5ce78bd61ddcad82cc427ab9c386298

SHA1
64a3f1225467852a0a5c190cb98222847ea36e0d

SHA256
c66be6acd5904807e89b174072c9d93cf89b8da9a8a8f986784751b9805bb4a7

SHA512
39c347eda7dcf38d25f2519fcf04c34105d929b535501d923872fddb98a030be6281e05df5c68cffb748fd351a544663e2f24895280055b9f169eb0c45e1fcfe

Download Submit
memory/1652-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1652-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1652-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1652-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1652-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2404-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2404-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2404-4-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2404-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2404-9-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2888-15-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads