tofsee | 56014682e7b9dbd55ad1fe084c3539d0e38484365326eb4d1980984240c0c987

Analysis

max time kernel
146s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-01-2025 19:48

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General

Target

2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe
Size

10.6MB
MD5

e836dbc909322a908071b5ef1cd29664
SHA1

f09b1592658eaafd025b0e1e9f9c8a0f7f4c78cf
SHA256

56014682e7b9dbd55ad1fe084c3539d0e38484365326eb4d1980984240c0c987
SHA512

167503ea073ae8c7120e8af0dac25e462373d338fe799c8162d07e406b9571e07ad7e6518c7498fc2227badebebf504bb5168828d9199d106350f46fb6f36c20
SSDEEP

49152:qqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:qqtYc3

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\egerrnsc = "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
2912	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\egerrnsc\ImagePath = "C:\\Windows\\SysWOW64\\egerrnsc\\wskkhwvj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
572	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2764	wskkhwvj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2764 set thread context of 572	2764	wskkhwvj.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2892	sc.exe
2752	sc.exe
2828	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wskkhwvj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 3012	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	31
PID 2376 wrote to memory of 3012	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	31
PID 2376 wrote to memory of 3012	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	31
PID 2376 wrote to memory of 3012	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	31
PID 2376 wrote to memory of 320	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	33
PID 2376 wrote to memory of 320	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	33
PID 2376 wrote to memory of 320	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	33
PID 2376 wrote to memory of 320	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	33
PID 2376 wrote to memory of 2892	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	35
PID 2376 wrote to memory of 2892	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	35
PID 2376 wrote to memory of 2892	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	35
PID 2376 wrote to memory of 2892	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	35
PID 2376 wrote to memory of 2752	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	37
PID 2376 wrote to memory of 2752	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	37
PID 2376 wrote to memory of 2752	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	37
PID 2376 wrote to memory of 2752	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	37
PID 2376 wrote to memory of 2828	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	39
PID 2376 wrote to memory of 2828	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	39
PID 2376 wrote to memory of 2828	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	39
PID 2376 wrote to memory of 2828	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	39
PID 2764 wrote to memory of 572	2764	wskkhwvj.exe	42
PID 2764 wrote to memory of 572	2764	wskkhwvj.exe	42
PID 2764 wrote to memory of 572	2764	wskkhwvj.exe	42
PID 2764 wrote to memory of 572	2764	wskkhwvj.exe	42
PID 2764 wrote to memory of 572	2764	wskkhwvj.exe	42
PID 2764 wrote to memory of 572	2764	wskkhwvj.exe	42
PID 2376 wrote to memory of 2912	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	43
PID 2376 wrote to memory of 2912	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	43
PID 2376 wrote to memory of 2912	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	43
PID 2376 wrote to memory of 2912	2376	2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\egerrnsc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wskkhwvj.exe" C:\Windows\SysWOW64\egerrnsc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create egerrnsc binPath= "C:\Windows\SysWOW64\egerrnsc\wskkhwvj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description egerrnsc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start egerrnsc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2828
- 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:2912

C:\Windows\SysWOW64\egerrnsc\wskkhwvj.exe
C:\Windows\SysWOW64\egerrnsc\wskkhwvj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-09_e836dbc909322a908071b5ef1cd29664_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- 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:572

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\wskkhwvj.exe

Filesize
14.2MB

MD5
a41cd4b567d670f140c07e5c7a638785

SHA1
8bbf14e2734ca021971a9e57e8acf30f0344a713

SHA256
24b30fb09381ff684938dafc8235cc8561849a316599a7f512bb000571bb0079

SHA512
2b4f1c782cd646e8445015a082640fe34002bbc66cd6c3e72e7426da2f061cad73f42ce9104eabcb367cffa88087fc9d76a6d5cc54a5504d70fd0a0614c0e85d

Download Submit
memory/572-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/572-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/572-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/572-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/572-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2376-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2376-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2376-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2376-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2376-16-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2376-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2376-14-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2764-12-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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