tofsee | ba13a02f9ea114abf19218e4462e2cac876e3cf111493d70074fcf127cea0480

Analysis

max time kernel
144s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-01-2025 19:03

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General

Target

2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe
Size

12.1MB
MD5

85271b69eb731a256374c604127c5523
SHA1

1da1e2ff84c623c8d9df0e368fb618389ad2a567
SHA256

ba13a02f9ea114abf19218e4462e2cac876e3cf111493d70074fcf127cea0480
SHA512

eb810ee705d67ee7dce3d71bf2097e3de448c3e6ccd2dce61c81f28bcb5bee77f7ed310d18a8bd0daab114662ecd2359547355db42386a814ca7a18fdcdf16b9
SSDEEP

24576:LpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttV:doo

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\bevwcmqz = "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
2976	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\bevwcmqz\ImagePath = "C:\\Windows\\SysWOW64\\bevwcmqz\\sunyfnbr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2888	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2828	sunyfnbr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2828 set thread context of 2888	2828	sunyfnbr.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2764	sc.exe
2708	sc.exe
2832	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	svchost.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	sunyfnbr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 3048	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	30
PID 1200 wrote to memory of 3048	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	30
PID 1200 wrote to memory of 3048	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	30
PID 1200 wrote to memory of 3048	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	30
PID 1200 wrote to memory of 1892	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	32
PID 1200 wrote to memory of 1892	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	32
PID 1200 wrote to memory of 1892	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	32
PID 1200 wrote to memory of 1892	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	32
PID 1200 wrote to memory of 2764	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	34
PID 1200 wrote to memory of 2764	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	34
PID 1200 wrote to memory of 2764	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	34
PID 1200 wrote to memory of 2764	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	34
PID 1200 wrote to memory of 2708	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	36
PID 1200 wrote to memory of 2708	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	36
PID 1200 wrote to memory of 2708	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	36
PID 1200 wrote to memory of 2708	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	36
PID 1200 wrote to memory of 2832	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	38
PID 1200 wrote to memory of 2832	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	38
PID 1200 wrote to memory of 2832	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	38
PID 1200 wrote to memory of 2832	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	38
PID 2828 wrote to memory of 2888	2828	sunyfnbr.exe	41
PID 2828 wrote to memory of 2888	2828	sunyfnbr.exe	41
PID 2828 wrote to memory of 2888	2828	sunyfnbr.exe	41
PID 2828 wrote to memory of 2888	2828	sunyfnbr.exe	41
PID 2828 wrote to memory of 2888	2828	sunyfnbr.exe	41
PID 2828 wrote to memory of 2888	2828	sunyfnbr.exe	41
PID 1200 wrote to memory of 2976	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	42
PID 1200 wrote to memory of 2976	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	42
PID 1200 wrote to memory of 2976	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	42
PID 1200 wrote to memory of 2976	1200	2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bevwcmqz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3048
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sunyfnbr.exe" C:\Windows\SysWOW64\bevwcmqz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bevwcmqz binPath= "C:\Windows\SysWOW64\bevwcmqz\sunyfnbr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bevwcmqz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bevwcmqz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- 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:2976

C:\Windows\SysWOW64\bevwcmqz\sunyfnbr.exe
C:\Windows\SysWOW64\bevwcmqz\sunyfnbr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-17_85271b69eb731a256374c604127c5523_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2828
- 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:2888

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\sunyfnbr.exe

Filesize
10.2MB

MD5
3be38eac37eef838d607ec7d03ca7f8d

SHA1
a47e0bc0ae659f5bdc65b54802c3f3dd57d58f53

SHA256
dea358fd4fdf8a10aaf4f7c89ecd2ffb18fd9d284046cf527971b6901ed44829

SHA512
0080e335632ecdc73b726f009ec71218ded30bb2b66ab8b69edc722758582bbe6e3d1374618515e2131d6eacabae86dbabdc4d9c8198d48c05c3cf07e3d584af

Download Submit
memory/1200-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/1200-3-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1200-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1200-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1200-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2828-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2888-11-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/2888-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2888-8-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/2888-16-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/2888-17-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads