tofsee | 053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30

General

Target

2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe
Size

11.9MB
MD5

8d0341e2f29fe413381e62419f0c517d
SHA1

3d245dae612e7854a68ccf35644e2e9009bd31a5
SHA256

053fabc1ed76327272fb89724448f254a98cd8e62b266e0f70a1747ef8f8cc30
SHA512

9ce23b8d972dcbb8ac6269dee84dbf55281d0abe3bfeb892c05745d18da9cf2a7d21759df50b6e718ccd5833cef94ab29bb3c136c7e5242f80b1da9b93bc5403
SSDEEP

3072:uLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:3OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
3548	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\rldbmuym\ImagePath = "C:\\Windows\\SysWOW64\\rldbmuym\\acxdwjt.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe

Deletes itself 1 IoCs

pid	Process
2144	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
228	acxdwjt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 228 set thread context of 2144	228	acxdwjt.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
400	sc.exe
4604	sc.exe
968	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4900	744	WerFault.exe	82
3104	228	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-19_8d0341e2f29fe413381e62419f0c517d_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	acxdwjt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 744 wrote to memory of 3976	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	84
PID 744 wrote to memory of 3976	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	84
PID 744 wrote to memory of 3976	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	84
PID 744 wrote to memory of 4612	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	86
PID 744 wrote to memory of 4612	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	86
PID 744 wrote to memory of 4612	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	86
PID 744 wrote to memory of 400	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	88
PID 744 wrote to memory of 400	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	88
PID 744 wrote to memory of 400	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	88
PID 744 wrote to memory of 4604	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	90
PID 744 wrote to memory of 4604	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	90
PID 744 wrote to memory of 4604	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	90
PID 744 wrote to memory of 968	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	92
PID 744 wrote to memory of 968	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	92
PID 744 wrote to memory of 968	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	92
PID 744 wrote to memory of 3548	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	95
PID 744 wrote to memory of 3548	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	95
PID 744 wrote to memory of 3548	744	2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe	95
PID 228 wrote to memory of 2144	228	acxdwjt.exe	103
PID 228 wrote to memory of 2144	228	acxdwjt.exe	103
PID 228 wrote to memory of 2144	228	acxdwjt.exe	103
PID 228 wrote to memory of 2144	228	acxdwjt.exe	103
PID 228 wrote to memory of 2144	228	acxdwjt.exe	103

C:\Users\Admin\AppData\Local\Temp\2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rldbmuym\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3976
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\acxdwjt.exe" C:\Windows\SysWOW64\rldbmuym\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rldbmuym binPath= "C:\Windows\SysWOW64\rldbmuym\acxdwjt.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rldbmuym "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rldbmuym
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:968
- 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:3548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 744 -s 1224
  2⤵
  - Program crash
  PID:4900

C:\Windows\SysWOW64\rldbmuym\acxdwjt.exe
C:\Windows\SysWOW64\rldbmuym\acxdwjt.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-19_8d0341e2f29fe413381e62419f0c517d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:228
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2144
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 228 -s 512
  2⤵
  - Program crash
  PID:3104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 744 -ip 744
1⤵
PID:3732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 228 -ip 228
1⤵
PID:4748

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\acxdwjt.exe

Filesize
14.8MB

MD5
1c9239c61bd4b677853c1b44e4d351ad

SHA1
a60b4ea835f3adf25865e94c6ff85f8d06a192af

SHA256
6dce8b7dd5dbd2156ce15960976d842384d2d165ce5cd9f63dcc043abaf20fe2

SHA512
b88f8ede61d1523d4e56e7e79a9bb84be797778002cf584d66048def2934963bfdfd4164a4423a48e55255cb10097f7cce67c710d50e4083cccc4d3effbc87cb

Download Submit
memory/228-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/228-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/228-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/228-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/744-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/744-2-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/744-8-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/744-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/744-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/744-1-0x0000000000480000-0x0000000000580000-memory.dmp

Filesize
1024KB

Download
memory/2144-14-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/2144-16-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/2144-17-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads