tofsee | 0ce4c0093fe649941ca157dd892d42b0509692bf95956ada81094b17922d30cf

General

Target

2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe
Size

11.7MB
MD5

e83049b18c14959ed27446ef0efceba5
SHA1

283041dc1182663450547935b60ec42709412eda
SHA256

0ce4c0093fe649941ca157dd892d42b0509692bf95956ada81094b17922d30cf
SHA512

c7b8775c66e9bbf9bb0c8e0bb13cd8ffefa49e1649f50714fae6f835bd2a5b0ae3652d430a952625428e6b620371bb99be04319e7f10b1cd840db50be20caaf6
SSDEEP

3072:fLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:WOMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
1628	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\kehyovce\ImagePath = "C:\\Windows\\SysWOW64\\kehyovce\\ykjxisau.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe

Deletes itself 1 IoCs

pid	Process
1660	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1996	ykjxisau.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1996 set thread context of 1660	1996	ykjxisau.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
880	sc.exe
3928	sc.exe
2904	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2020	3336	WerFault.exe	82
5096	1996	WerFault.exe	94

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	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.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	ykjxisau.exe
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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3336 wrote to memory of 2424	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	83
PID 3336 wrote to memory of 2424	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	83
PID 3336 wrote to memory of 2424	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	83
PID 3336 wrote to memory of 4300	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	86
PID 3336 wrote to memory of 4300	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	86
PID 3336 wrote to memory of 4300	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	86
PID 3336 wrote to memory of 880	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	88
PID 3336 wrote to memory of 880	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	88
PID 3336 wrote to memory of 880	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	88
PID 3336 wrote to memory of 3928	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	90
PID 3336 wrote to memory of 3928	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	90
PID 3336 wrote to memory of 3928	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	90
PID 3336 wrote to memory of 2904	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	92
PID 3336 wrote to memory of 2904	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	92
PID 3336 wrote to memory of 2904	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	92
PID 3336 wrote to memory of 1628	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	95
PID 3336 wrote to memory of 1628	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	95
PID 3336 wrote to memory of 1628	3336	2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe	95
PID 1996 wrote to memory of 1660	1996	ykjxisau.exe	101
PID 1996 wrote to memory of 1660	1996	ykjxisau.exe	101
PID 1996 wrote to memory of 1660	1996	ykjxisau.exe	101
PID 1996 wrote to memory of 1660	1996	ykjxisau.exe	101
PID 1996 wrote to memory of 1660	1996	ykjxisau.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kehyovce\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ykjxisau.exe" C:\Windows\SysWOW64\kehyovce\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4300
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kehyovce binPath= "C:\Windows\SysWOW64\kehyovce\ykjxisau.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kehyovce "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kehyovce
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2904
- 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:1628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3336 -s 772
  2⤵
  - Program crash
  PID:2020

C:\Windows\SysWOW64\kehyovce\ykjxisau.exe
C:\Windows\SysWOW64\kehyovce\ykjxisau.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-29_e83049b18c14959ed27446ef0efceba5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1996 -s 512
  2⤵
  - Program crash
  PID:5096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3336 -ip 3336
1⤵
PID:2732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1996 -ip 1996
1⤵
PID:3368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ykjxisau.exe

Filesize
13.8MB

MD5
1df0da4f7ea64cddf69217e79397f049

SHA1
a30f4b2efd7a109dd5ca267acb8793ce7808b3c5

SHA256
91713fcba9dece219eb8dbba69f2340ec2cc0aff4901938ba19b424a35c4f6af

SHA512
627385dc94bfd4eb237b4825b5609645c2bd8fa5c514276898acdd8aaf8c7c1934eaf45707d32d985619d87d5499018411eb783dbbcc997ca78c35445b076988

Download Submit
memory/1660-14-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/1660-17-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/1660-16-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/1996-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1996-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1996-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1996-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3336-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3336-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3336-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/3336-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3336-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3336-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads