tofsee | 34a9e529ec99ec8b25ca513c855771b748066504d21249f27c10630f6c42ba8b

Analysis

max time kernel
145s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-02-2025 21:35

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General

Target

2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe
Size

14.8MB
MD5

e07e7a0103d4cc93b6abd0a2a53e0d06
SHA1

aed3f747f74bc42fab2cd3aa4031b09607708940
SHA256

34a9e529ec99ec8b25ca513c855771b748066504d21249f27c10630f6c42ba8b
SHA512

fb654f50576e844688139a6f634178df56bcc0be0ffb218ab48259dbb05129464aa1eb70d4cb86d81dabc508e0778f9c5d9ffe0c531d4100b3188fdc4e0e1bf4
SSDEEP

393216:TXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:

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\dywqqftr = "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
696	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\dywqqftr\ImagePath = "C:\\Windows\\SysWOW64\\dywqqftr\\xfuyljss.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
536	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2392	xfuyljss.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2392 set thread context of 536	2392	xfuyljss.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2640	sc.exe
1828	sc.exe
2676	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xfuyljss.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 2744	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	30
PID 2896 wrote to memory of 2744	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	30
PID 2896 wrote to memory of 2744	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	30
PID 2896 wrote to memory of 2744	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	30
PID 2896 wrote to memory of 2648	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	32
PID 2896 wrote to memory of 2648	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	32
PID 2896 wrote to memory of 2648	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	32
PID 2896 wrote to memory of 2648	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	32
PID 2896 wrote to memory of 2676	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	34
PID 2896 wrote to memory of 2676	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	34
PID 2896 wrote to memory of 2676	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	34
PID 2896 wrote to memory of 2676	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	34
PID 2896 wrote to memory of 2640	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	36
PID 2896 wrote to memory of 2640	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	36
PID 2896 wrote to memory of 2640	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	36
PID 2896 wrote to memory of 2640	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	36
PID 2896 wrote to memory of 1828	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	38
PID 2896 wrote to memory of 1828	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	38
PID 2896 wrote to memory of 1828	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	38
PID 2896 wrote to memory of 1828	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	38
PID 2392 wrote to memory of 536	2392	xfuyljss.exe	41
PID 2392 wrote to memory of 536	2392	xfuyljss.exe	41
PID 2392 wrote to memory of 536	2392	xfuyljss.exe	41
PID 2392 wrote to memory of 536	2392	xfuyljss.exe	41
PID 2392 wrote to memory of 536	2392	xfuyljss.exe	41
PID 2392 wrote to memory of 536	2392	xfuyljss.exe	41
PID 2896 wrote to memory of 696	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	42
PID 2896 wrote to memory of 696	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	42
PID 2896 wrote to memory of 696	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	42
PID 2896 wrote to memory of 696	2896	2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dywqqftr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xfuyljss.exe" C:\Windows\SysWOW64\dywqqftr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dywqqftr binPath= "C:\Windows\SysWOW64\dywqqftr\xfuyljss.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dywqqftr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dywqqftr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1828
- 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:696

C:\Windows\SysWOW64\dywqqftr\xfuyljss.exe
C:\Windows\SysWOW64\dywqqftr\xfuyljss.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_e07e7a0103d4cc93b6abd0a2a53e0d06_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2392
- 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:536

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\xfuyljss.exe

Filesize
14.9MB

MD5
babddd831f5ffa88c4892f34523c8f32

SHA1
bb48a8d24f5db36ca4a28670bf9ff1801724ce63

SHA256
fa296145e81441a96972fd9d74c77e5acd95f062bc5a30496c3b5d535675a7e0

SHA512
a0bb92a309d38903b51880d65721d7f7d5009609f1aeda5a7980cbb47ea51d9656f14e1aac962a5e1619d18bc2e6ba318c1385c6aea770fc930bff4fda359549

Download Submit
memory/536-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/536-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/536-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/536-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/536-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2392-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2896-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/2896-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2896-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2896-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2896-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2896-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads