tofsee | 7a0d089d8abbfc6489a7ec957a02f9809ea55347ef9a7d67e881df16278f9aec

General

Target

2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe
Size

14.5MB
MD5

1b7b67be0014a6822a1f26889820f99f
SHA1

d01ecab8311fc9567575b568138773c08ccade22
SHA256

7a0d089d8abbfc6489a7ec957a02f9809ea55347ef9a7d67e881df16278f9aec
SHA512

3563b4a21702e43b25d934755f2759ae386bb67de91f1512dc8a99f23e51490cb1068a5a4f876f114d6be29857e3e96f1fad8aac9e47b44c35c04cd74424d6d5
SSDEEP

393216:NXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXL:5

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
656	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\mcsmzlae\ImagePath = "C:\\Windows\\SysWOW64\\mcsmzlae\\dfyjqymc.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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe

Deletes itself 1 IoCs

pid	Process
4172	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4108	dfyjqymc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4108 set thread context of 4172	4108	dfyjqymc.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
2988	sc.exe
1476	sc.exe
4356	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

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-06_1b7b67be0014a6822a1f26889820f99f_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	dfyjqymc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4896 wrote to memory of 3084	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	89
PID 4896 wrote to memory of 3084	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	89
PID 4896 wrote to memory of 3084	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	89
PID 4896 wrote to memory of 832	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	91
PID 4896 wrote to memory of 832	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	91
PID 4896 wrote to memory of 832	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	91
PID 4896 wrote to memory of 2988	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	93
PID 4896 wrote to memory of 2988	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	93
PID 4896 wrote to memory of 2988	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	93
PID 4896 wrote to memory of 1476	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	98
PID 4896 wrote to memory of 1476	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	98
PID 4896 wrote to memory of 1476	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	98
PID 4896 wrote to memory of 4356	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	101
PID 4896 wrote to memory of 4356	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	101
PID 4896 wrote to memory of 4356	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	101
PID 4108 wrote to memory of 4172	4108	dfyjqymc.exe	106
PID 4108 wrote to memory of 4172	4108	dfyjqymc.exe	106
PID 4108 wrote to memory of 4172	4108	dfyjqymc.exe	106
PID 4108 wrote to memory of 4172	4108	dfyjqymc.exe	106
PID 4108 wrote to memory of 4172	4108	dfyjqymc.exe	106
PID 4896 wrote to memory of 656	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	107
PID 4896 wrote to memory of 656	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	107
PID 4896 wrote to memory of 656	4896	2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe	107

C:\Users\Admin\AppData\Local\Temp\2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mcsmzlae\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dfyjqymc.exe" C:\Windows\SysWOW64\mcsmzlae\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mcsmzlae binPath= "C:\Windows\SysWOW64\mcsmzlae\dfyjqymc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mcsmzlae "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mcsmzlae
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4356
- 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:656

C:\Windows\SysWOW64\mcsmzlae\dfyjqymc.exe
C:\Windows\SysWOW64\mcsmzlae\dfyjqymc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-06_1b7b67be0014a6822a1f26889820f99f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4108
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4172

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\dfyjqymc.exe

Filesize
12.6MB

MD5
f459bea29e6b053f0579414f1567e7f5

SHA1
b3c21498ac4bf3e3f92b5b9b8e46abf8d0f8491f

SHA256
07cd63a39bc7e39cc04f8ae3833efba10b921cf741fd1b73ab2fbdd2499a639d

SHA512
40ad31fc9bb62d32b61f9dda1efce44d4194c3c23edfc6bc33798a65f4cfc77015f1b2bfbc660d310d3cbcf8cde9ac6c7fffca02a8db1bb3202dfcb64251f66b

Download Submit
memory/4108-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4108-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4108-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4108-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4172-14-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4172-11-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4172-20-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4172-21-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4172-22-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4896-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4896-1-0x0000000000470000-0x0000000000570000-memory.dmp

Filesize
1024KB

Download
memory/4896-2-0x0000000000890000-0x00000000008A3000-memory.dmp

Filesize
76KB

Download
memory/4896-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4896-18-0x0000000000890000-0x00000000008A3000-memory.dmp

Filesize
76KB

Download
memory/4896-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads