Resubmissions

20-01-2023 15:48

230120-s8s46aag4s 10

12-01-2023 16:56

230112-vfpblsgg76 10

12-01-2023 16:30

230112-tzrqeagg22 10

General

  • Target

    Barselssengens184.exe

  • Size

    621KB

  • Sample

    230120-s8s46aag4s

  • MD5

    094b94d89541ad1cc14b2815447e6017

  • SHA1

    176cd3a4ceb717cf7aef0ca98739a62a4c04906b

  • SHA256

    b095bf0a700bbc9ec6770a33f3af9d3a173028223d0b9a6af6f80c2096d0be93

  • SHA512

    446b640ee74daf1e3e215a92103102c186a3d752daf9b24594b83f42afe8274fddcd58decd5652afbc3d6aeabee90365f831e9c645d14f0de6624503a696aa73

  • SSDEEP

    12288:zcWJ+6nT8mlKRXGeo2xxyRFVRI6bLg1ADX9rMIbyyjRO:zXBn1lKRWyx8RFVRI6bLgMBxOyjo

Malware Config

Targets

    • Target

      Barselssengens184.exe

    • Size

      621KB

    • MD5

      094b94d89541ad1cc14b2815447e6017

    • SHA1

      176cd3a4ceb717cf7aef0ca98739a62a4c04906b

    • SHA256

      b095bf0a700bbc9ec6770a33f3af9d3a173028223d0b9a6af6f80c2096d0be93

    • SHA512

      446b640ee74daf1e3e215a92103102c186a3d752daf9b24594b83f42afe8274fddcd58decd5652afbc3d6aeabee90365f831e9c645d14f0de6624503a696aa73

    • SSDEEP

      12288:zcWJ+6nT8mlKRXGeo2xxyRFVRI6bLg1ADX9rMIbyyjRO:zXBn1lKRWyx8RFVRI6bLgMBxOyjo

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • Checks QEMU agent file

      Checks presence of QEMU agent, possibly to detect virtualization.

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Command and Control

Web Service

1
T1102

Tasks