Overview

overview

10

Static

static

3

2025-04-04...er.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    143s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/04/2025, 03:03

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General

  • Target

    2025-04-04_a8433ed2dce68af46d91394a9f3cda7e_black-basta_luca-stealer.exe

  • Size

    12.3MB

  • MD5

    a8433ed2dce68af46d91394a9f3cda7e

  • SHA1

    7cf1a08230c80f3490b35442b02a19bdbc5ba411

  • SHA256

    750e0e46119245d6c6086debf721e333ecf27061bc22a57b3979bf345f57462c

  • SHA512

    184cb61f981338c70aaee3b50370ce65d050f0a260a30f5af74ee5d108a4afa1ef9467a164f7e9e0b57ca3ccd03ca50ced12ef5c0015cca76bff2ceb9cb2c162

  • SSDEEP

    49152:HiSUBoooooooooooooooooooooooooooooooooooooooooooooooooooooooooon:HbU

Score
10/10
tofseedefense_evasiondiscoveryexecutionpersistenceprivilege_escalationtrojan

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.

    trojantofsee
  • Tofsee family
    tofsee
  • Creates new service(s) 2 TTPs
    persistenceexecution
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    defense_evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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.

    persistenceprivilege_escalation
  • 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
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-04-04_a8433ed2dce68af46d91394a9f3cda7e_black-basta_luca-stealer.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-04-04_a8433ed2dce68af46d91394a9f3cda7e_black-basta_luca-stealer.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:6096
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\crtbfquw\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3132
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gxfdnipd.exe" C:\Windows\SysWOW64\crtbfquw\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2164
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create crtbfquw binPath= "C:\Windows\SysWOW64\crtbfquw\gxfdnipd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_a8433ed2dce68af46d91394a9f3cda7e_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3524
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description crtbfquw "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4908
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start crtbfquw
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4932
    • 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:4448
  • C:\Windows\SysWOW64\crtbfquw\gxfdnipd.exe
    C:\Windows\SysWOW64\crtbfquw\gxfdnipd.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_a8433ed2dce68af46d91394a9f3cda7e_black-basta_luca-stealer.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5756
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2100

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

1
T1562.004

Modify Registry

1
T1112

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\gxfdnipd.exe
    Filesize

    12.7MB

    MD5

    14cc576afa2095c422caf7f60bcbb699

    SHA1

    5547ba3d0264ca340236a03bea5ba4c878886c71

    SHA256

    61801bad306dbdcc1f193424b1174451dd05b26938021c5c3f765c64504bb08d

    SHA512

    5510a3aeeffc02c5aca487aaed29e44d219c43f1f9f5504e43cdcd788f599f46196a3268a6e25f34238d09ed2eb5784fdacd4cf0a660f5d6ac949e377faf928e

    Download Submit

  • memory/2100-17-0x0000000000200000-0x0000000000215000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2100-16-0x0000000000200000-0x0000000000215000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2100-9-0x0000000000200000-0x0000000000215000-memory.dmp

    Filesize

    84KB

    Download

  • memory/5756-11-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/5756-18-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/5756-12-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/6096-5-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/6096-13-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/6096-14-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/6096-2-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/6096-4-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/6096-3-0x00000000001C0000-0x00000000001D3000-memory.dmp

    Filesize

    76KB

    Download