tofsee | 053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30

Analysis

max time kernel
59s
max time network
64s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
19-12-2024 19:17

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General

Target

053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe
Size

11.9MB
MD5

8d0341e2f29fe413381e62419f0c517d
SHA1

3d245dae612e7854a68ccf35644e2e9009bd31a5
SHA256

053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30
SHA512

9ce23b8d972dcbb8ac6269dee84dbf55281d0abe3bfeb892c05745d18da9cf2a7d21759df50b6e718ccd5833cef94ab29bb3c136c7e5242f80b1da9b93bc5403
SSDEEP

3072:uLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:3OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
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
2932	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\cxwqfqza\ImagePath = "C:\\Windows\\SysWOW64\\cxwqfqza\\inxsmyvx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2752	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2680	inxsmyvx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2680 set thread context of 2752	2680	inxsmyvx.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2828	sc.exe
2836	sc.exe
2704	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	inxsmyvx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2780	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	30
PID 2856 wrote to memory of 2780	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	30
PID 2856 wrote to memory of 2780	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	30
PID 2856 wrote to memory of 2780	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	30
PID 2856 wrote to memory of 2868	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	32
PID 2856 wrote to memory of 2868	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	32
PID 2856 wrote to memory of 2868	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	32
PID 2856 wrote to memory of 2868	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	32
PID 2856 wrote to memory of 2828	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	34
PID 2856 wrote to memory of 2828	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	34
PID 2856 wrote to memory of 2828	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	34
PID 2856 wrote to memory of 2828	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	34
PID 2856 wrote to memory of 2836	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	36
PID 2856 wrote to memory of 2836	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	36
PID 2856 wrote to memory of 2836	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	36
PID 2856 wrote to memory of 2836	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	36
PID 2856 wrote to memory of 2704	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	38
PID 2856 wrote to memory of 2704	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	38
PID 2856 wrote to memory of 2704	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	38
PID 2856 wrote to memory of 2704	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	38
PID 2856 wrote to memory of 2932	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	40
PID 2856 wrote to memory of 2932	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	40
PID 2856 wrote to memory of 2932	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	40
PID 2856 wrote to memory of 2932	2856	053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe	40
PID 2680 wrote to memory of 2752	2680	inxsmyvx.exe	43
PID 2680 wrote to memory of 2752	2680	inxsmyvx.exe	43
PID 2680 wrote to memory of 2752	2680	inxsmyvx.exe	43
PID 2680 wrote to memory of 2752	2680	inxsmyvx.exe	43
PID 2680 wrote to memory of 2752	2680	inxsmyvx.exe	43
PID 2680 wrote to memory of 2752	2680	inxsmyvx.exe	43

C:\Users\Admin\AppData\Local\Temp\053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe
"C:\Users\Admin\AppData\Local\Temp\053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cxwqfqza\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\inxsmyvx.exe" C:\Windows\SysWOW64\cxwqfqza\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cxwqfqza binPath= "C:\Windows\SysWOW64\cxwqfqza\inxsmyvx.exe /d\"C:\Users\Admin\AppData\Local\Temp\053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2828
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cxwqfqza "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cxwqfqza
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2704
- 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:2932

C:\Windows\SysWOW64\cxwqfqza\inxsmyvx.exe
C:\Windows\SysWOW64\cxwqfqza\inxsmyvx.exe /d"C:\Users\Admin\AppData\Local\Temp\053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2752

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

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\inxsmyvx.exe

Filesize
14.1MB

MD5
df0c4fcde03f7e268cc92f26e70f04e7

SHA1
615f0b569b44d5574a990e9760c8509514781dda

SHA256
75ce3eca2df661487943562f6b831488b46e62217f78dea3f3d4b39e08d104c9

SHA512
de09ef1c0364339316c849f8e2f04c534509b0b63185ecace33e24ce0d629909eb8b12e4467fe2395c29ccc831eb0ded1e6782ae79f1fa20bc8ec72d8f328711

Download Submit
memory/2680-15-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2752-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2752-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2752-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2752-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2856-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2856-7-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2856-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2856-6-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2856-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2856-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads