tofsee | eed0b339509bc0a1ba496841e9148ce2b01100f39cf4c08568714156d7072e6a

General

Target

2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe
Size

10.7MB
MD5

3233786abe3f10c3b3c7248873abf10a
SHA1

6ed54a117d5f9a237d4d15b5db518dbcaf2ae63a
SHA256

eed0b339509bc0a1ba496841e9148ce2b01100f39cf4c08568714156d7072e6a
SHA512

2b06f09f9a04f1e9e0b8c155772f709297bb83785d052029fa090546857e3265c0dd9e790f6523d3feea5ee5cdef2de62096e54c3ebce02b086315c19e7f76c7
SSDEEP

24576:+pomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttl:Soo

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
4760	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\egkytlsv\ImagePath = "C:\\Windows\\SysWOW64\\egkytlsv\\ctbzjelz.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe

Deletes itself 1 IoCs

pid	Process
3988	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
912	ctbzjelz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 912 set thread context of 3988	912	ctbzjelz.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1312	sc.exe
3676	sc.exe
4052	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
2044	3416	WerFault.exe	81
1596	912	WerFault.exe	92

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	2025-01-15_3233786abe3f10c3b3c7248873abf10a_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ctbzjelz.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3416 wrote to memory of 4396	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	82
PID 3416 wrote to memory of 4396	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	82
PID 3416 wrote to memory of 4396	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	82
PID 3416 wrote to memory of 2584	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	84
PID 3416 wrote to memory of 2584	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	84
PID 3416 wrote to memory of 2584	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	84
PID 3416 wrote to memory of 1312	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	86
PID 3416 wrote to memory of 1312	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	86
PID 3416 wrote to memory of 1312	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	86
PID 3416 wrote to memory of 3676	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	88
PID 3416 wrote to memory of 3676	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	88
PID 3416 wrote to memory of 3676	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	88
PID 3416 wrote to memory of 4052	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	90
PID 3416 wrote to memory of 4052	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	90
PID 3416 wrote to memory of 4052	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	90
PID 3416 wrote to memory of 4760	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	95
PID 3416 wrote to memory of 4760	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	95
PID 3416 wrote to memory of 4760	3416	2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe	95
PID 912 wrote to memory of 3988	912	ctbzjelz.exe	102
PID 912 wrote to memory of 3988	912	ctbzjelz.exe	102
PID 912 wrote to memory of 3988	912	ctbzjelz.exe	102
PID 912 wrote to memory of 3988	912	ctbzjelz.exe	102
PID 912 wrote to memory of 3988	912	ctbzjelz.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3416
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\egkytlsv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ctbzjelz.exe" C:\Windows\SysWOW64\egkytlsv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create egkytlsv binPath= "C:\Windows\SysWOW64\egkytlsv\ctbzjelz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description egkytlsv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start egkytlsv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4052
- 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:4760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3416 -s 1036
  2⤵
  - Program crash
  PID:2044

C:\Windows\SysWOW64\egkytlsv\ctbzjelz.exe
C:\Windows\SysWOW64\egkytlsv\ctbzjelz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-15_3233786abe3f10c3b3c7248873abf10a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:912
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 912 -s 532
  2⤵
  - Program crash
  PID:1596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3416 -ip 3416
1⤵
PID:3380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 912 -ip 912
1⤵
PID:404

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

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Downloads

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

Filesize
11.8MB

MD5
40ec469b08017d523eeda64adae1edfd

SHA1
cc71377c46d5a522d005875e79af26779b4c68c9

SHA256
b718c7bce29412c1a09fca4537a520e29a6292734b49c2c1f84209cfc22206d7

SHA512
60ff666d76c25f6458787b068c67874b65356c80777d6c56df4d7ebc9c0381bcea0df6e7e3f76caefa752351da6fc83d3e736df6b093c93e266ede4d307986a5

Download Submit
memory/912-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/912-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/912-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/912-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3416-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3416-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3416-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3416-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3416-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3416-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/3988-14-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/3988-16-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/3988-17-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads