Overview

overview

10

Static

static

3

2025-04-04...er.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    143s
  • 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, 02:58

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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:928
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\awuefoyp\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4392
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sedrcmuo.exe" C:\Windows\SysWOW64\awuefoyp\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4816
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create awuefoyp binPath= "C:\Windows\SysWOW64\awuefoyp\sedrcmuo.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:3004
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description awuefoyp "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1488
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start awuefoyp
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3576
    • 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:4332
  • C:\Windows\SysWOW64\awuefoyp\sedrcmuo.exe
    C:\Windows\SysWOW64\awuefoyp\sedrcmuo.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:4888
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:1496

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

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\sedrcmuo.exe
    Filesize

    12.1MB

    MD5

    60c389d3d4095f5b6e07a3771c316b81

    SHA1

    17a0a9cdc0e4c5a2003525aefec89a8e1d17c107

    SHA256

    06a95075f62a9b8a5dc16d19033c3c10a4a9957fed9becc7f03909521aa093ba

    SHA512

    e1e1719fdb09f51e62ba6c89b6fa7cf8a8bdb2a9196e7fb84b5a72e171c5b99d8ea23439eecb5c68c326ea996535e399d210b99e2d3964332b77b4ed4e9defff

    Download Submit

  • memory/928-8-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/928-3-0x00000000001C0000-0x00000000001D3000-memory.dmp

    Filesize

    76KB

    Download

  • memory/928-5-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/928-4-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/928-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/928-2-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/1496-12-0x0000000000170000-0x0000000000185000-memory.dmp

    Filesize

    84KB

    Download

  • memory/1496-14-0x0000000000170000-0x0000000000185000-memory.dmp

    Filesize

    84KB

    Download

  • memory/1496-16-0x0000000000170000-0x0000000000185000-memory.dmp

    Filesize

    84KB

    Download

  • memory/4888-17-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/4888-15-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download

  • memory/4888-18-0x0000000000400000-0x00000000033A1000-memory.dmp

    Filesize

    47.6MB

    Download