tofsee | 5cef4a944d765e8174b066cf8141284a903cac39f8599c705e3591a5b32822be

Analysis

max time kernel
143s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27/01/2025, 11:07

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General

Target

2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe
Size

12.5MB
MD5

b66d44938c2394f1cb57e53646b2462d
SHA1

e15dfebc9e91b04811f437dc6c794ac95dd138fa
SHA256

5cef4a944d765e8174b066cf8141284a903cac39f8599c705e3591a5b32822be
SHA512

eecdd062db81a76dd728f6fb691ca165e96cd9214db8190b47a1a1048b5991f7aa9e95cf00af7757b140af4d1b0869f305c3a65cfb2fc1055da9b080ed7e1c9c
SSDEEP

393216:RXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXm:0

Score

10^/10

tofsee defense_evasion discovery 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

defense_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\bqdwdkis = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2604	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\bqdwdkis\ImagePath = "C:\\Windows\\SysWOW64\\bqdwdkis\\rmqiyjlj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2340	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2720	rmqiyjlj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 2340	2720	rmqiyjlj.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2572	sc.exe
2556	sc.exe
2820	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.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	rmqiyjlj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 2752	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	30
PID 2644 wrote to memory of 2752	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	30
PID 2644 wrote to memory of 2752	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	30
PID 2644 wrote to memory of 2752	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	30
PID 2644 wrote to memory of 2696	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	32
PID 2644 wrote to memory of 2696	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	32
PID 2644 wrote to memory of 2696	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	32
PID 2644 wrote to memory of 2696	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	32
PID 2644 wrote to memory of 2556	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	34
PID 2644 wrote to memory of 2556	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	34
PID 2644 wrote to memory of 2556	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	34
PID 2644 wrote to memory of 2556	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	34
PID 2644 wrote to memory of 2820	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	36
PID 2644 wrote to memory of 2820	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	36
PID 2644 wrote to memory of 2820	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	36
PID 2644 wrote to memory of 2820	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	36
PID 2644 wrote to memory of 2572	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	38
PID 2644 wrote to memory of 2572	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	38
PID 2644 wrote to memory of 2572	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	38
PID 2644 wrote to memory of 2572	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	38
PID 2644 wrote to memory of 2604	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	41
PID 2644 wrote to memory of 2604	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	41
PID 2644 wrote to memory of 2604	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	41
PID 2644 wrote to memory of 2604	2644	2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe	41
PID 2720 wrote to memory of 2340	2720	rmqiyjlj.exe	43
PID 2720 wrote to memory of 2340	2720	rmqiyjlj.exe	43
PID 2720 wrote to memory of 2340	2720	rmqiyjlj.exe	43
PID 2720 wrote to memory of 2340	2720	rmqiyjlj.exe	43
PID 2720 wrote to memory of 2340	2720	rmqiyjlj.exe	43
PID 2720 wrote to memory of 2340	2720	rmqiyjlj.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bqdwdkis\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rmqiyjlj.exe" C:\Windows\SysWOW64\bqdwdkis\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bqdwdkis binPath= "C:\Windows\SysWOW64\bqdwdkis\rmqiyjlj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bqdwdkis "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bqdwdkis
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- 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:2604

C:\Windows\SysWOW64\bqdwdkis\rmqiyjlj.exe
C:\Windows\SysWOW64\bqdwdkis\rmqiyjlj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_b66d44938c2394f1cb57e53646b2462d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2720
- 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:2340

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\rmqiyjlj.exe

Filesize
10.5MB

MD5
82452d20398b276695b17e2342e084e5

SHA1
ba669e4ae302887d177029c3ba104412cf71ee3c

SHA256
2a8fbd348c55e12602eebdca409072f519e701d39a61a550279df841f7c2dea7

SHA512
c292e645b516cf8326a2b0bd88dd1e3dab2377a11d84e9dd0184ca489327ecade41e920887989ea8d296fdc53e3b0abfbd1d2bee6e1c23014b02ae7dd6817d31

Download Submit
memory/2340-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2340-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2340-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2340-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2340-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2644-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2644-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/2644-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2644-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2644-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2644-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2720-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads