Overview

overview

10

Static

static

257bd4c54e...1a.exe

windows7-x64

10

257bd4c54e...1a.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    257bd4c54e39234e1d93a0667f769881ed774f5f9cd5764488fd44c1f1c4ba1a.exe

  • Size

    328KB

  • Sample

    221212-tczshabg52

  • MD5

    3d5327a1d32b49f7c95fb942f007867c

  • SHA1

    5aab2c4e490cea4d7e147cad9e22fcbd05706f01

  • SHA256

    257bd4c54e39234e1d93a0667f769881ed774f5f9cd5764488fd44c1f1c4ba1a

  • SHA512

    5f379784a9d491582103a10dbc90b8c3369b636f6515befc1fc26522a0440b0da142e7e229034332745a82aa5768ae5344bdba5bb2b143f7cdb7d94a83586675

  • SSDEEP

    6144:GyOxz/rLsgWZUlw+aitjS1dDr1mcvnpSYBiaN0eU0ZrrMC7C:GJZIgWZZ+aitjSvDEwprBvN7RQEC

Score
10/10
smokeloadersystembcbackdoortrojan

Malware Config

Extracted

Family

systembc

C2

109.205.214.18:443

Targets

    • Target

      257bd4c54e39234e1d93a0667f769881ed774f5f9cd5764488fd44c1f1c4ba1a.exe

    • Size

      328KB

    • MD5

      3d5327a1d32b49f7c95fb942f007867c

    • SHA1

      5aab2c4e490cea4d7e147cad9e22fcbd05706f01

    • SHA256

      257bd4c54e39234e1d93a0667f769881ed774f5f9cd5764488fd44c1f1c4ba1a

    • SHA512

      5f379784a9d491582103a10dbc90b8c3369b636f6515befc1fc26522a0440b0da142e7e229034332745a82aa5768ae5344bdba5bb2b143f7cdb7d94a83586675

    • SSDEEP

      6144:GyOxz/rLsgWZUlw+aitjS1dDr1mcvnpSYBiaN0eU0ZrrMC7C:GJZIgWZZ+aitjSvDEwprBvN7RQEC

    Score
    10/10
    smokeloaderbackdoortrojansystembc

    • Detects Smokeloader packer

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

      trojanbackdoorsmokeloader

    • SystemBC

      SystemBC is a proxy and remote administration tool first seen in 2019.

      trojansystembc

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks