tofsee | 3bebf0b9182458e3fa0187712d1a4aa1641d6cdab70b1e55420877651c64cfed

General

Target

2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe
Size

13.5MB
MD5

f485164b0b0f223b08773ab16c2e98bf
SHA1

470d66af216b48894fd9697729a45b59b27e4702
SHA256

3bebf0b9182458e3fa0187712d1a4aa1641d6cdab70b1e55420877651c64cfed
SHA512

e9f7b150084a25368b683d4184dbecfbe78f79a1a74530299d674cafa16016139d1f4d9a2eb43cac915b3ea12917dff7b96d0bd03610849d499215846ccacb01
SSDEEP

3072:6LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:jOMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee defense_evasion discovery 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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3992	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\drcaiohy\ImagePath = "C:\\Windows\\SysWOW64\\drcaiohy\\kjxznkld.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-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe

Deletes itself 1 IoCs

pid	Process
1108	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3840	kjxznkld.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3840 set thread context of 1108	3840	kjxznkld.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3460	sc.exe
2184	sc.exe
4816	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
4184	400	WerFault.exe	83
2468	3840	WerFault.exe	96

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_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	kjxznkld.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 220	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	86
PID 400 wrote to memory of 220	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	86
PID 400 wrote to memory of 220	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	86
PID 400 wrote to memory of 1052	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	88
PID 400 wrote to memory of 1052	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	88
PID 400 wrote to memory of 1052	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	88
PID 400 wrote to memory of 2184	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	90
PID 400 wrote to memory of 2184	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	90
PID 400 wrote to memory of 2184	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	90
PID 400 wrote to memory of 4816	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	92
PID 400 wrote to memory of 4816	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	92
PID 400 wrote to memory of 4816	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	92
PID 400 wrote to memory of 3460	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	94
PID 400 wrote to memory of 3460	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	94
PID 400 wrote to memory of 3460	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	94
PID 400 wrote to memory of 3992	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	97
PID 400 wrote to memory of 3992	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	97
PID 400 wrote to memory of 3992	400	2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe	97
PID 3840 wrote to memory of 1108	3840	kjxznkld.exe	102
PID 3840 wrote to memory of 1108	3840	kjxznkld.exe	102
PID 3840 wrote to memory of 1108	3840	kjxznkld.exe	102
PID 3840 wrote to memory of 1108	3840	kjxznkld.exe	102
PID 3840 wrote to memory of 1108	3840	kjxznkld.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\drcaiohy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kjxznkld.exe" C:\Windows\SysWOW64\drcaiohy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create drcaiohy binPath= "C:\Windows\SysWOW64\drcaiohy\kjxznkld.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description drcaiohy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start drcaiohy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3460
- 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:3992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 400 -s 1172
  2⤵
  - Program crash
  PID:4184

C:\Windows\SysWOW64\drcaiohy\kjxznkld.exe
C:\Windows\SysWOW64\drcaiohy\kjxznkld.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_f485164b0b0f223b08773ab16c2e98bf_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3840
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3840 -s 508
  2⤵
  - Program crash
  PID:2468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 400 -ip 400
1⤵
PID:668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3840 -ip 3840
1⤵
PID:4776

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\kjxznkld.exe

Filesize
11.3MB

MD5
2822e858a0b4ba41e931efb4db9c211d

SHA1
d8f819a404bb8a157e630b74d330cf3970ac65c2

SHA256
9b5ce0d81de7a7bd65b13c589a5533988bb031c18efba13b544328a3e5149ef0

SHA512
57d6e79e19d7eac1ffaa6f8adbbc9eeee4945debd1e5d44de4a4d0506a706972990abfcafe5b916f5fa70ce3ba1d5adb078ee729fd615c75a509f32d524bac9f

Download Submit
memory/400-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/400-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/400-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/400-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/400-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/400-1-0x0000000000780000-0x0000000000880000-memory.dmp

Filesize
1024KB

Download
memory/1108-14-0x00000000001E0000-0x00000000001F5000-memory.dmp

Filesize
84KB

Download
memory/1108-16-0x00000000001E0000-0x00000000001F5000-memory.dmp

Filesize
84KB

Download
memory/1108-17-0x00000000001E0000-0x00000000001F5000-memory.dmp

Filesize
84KB

Download
memory/3840-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3840-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3840-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3840-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads