Overview

overview

10

Static

static

3

Calyciform.exe

windows7-x64

10

Calyciform.exe

windows10-2004-x64

10

$PLUGINSDI...em.dll

windows7-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

Bluetooth ...UN.chm

windows7-x64

1

Bluetooth ...UN.chm

windows10-2004-x64

1

Sharing

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General

  • Target

    Calyciform.exe

  • Size

    418KB

  • Sample

    241112-hcxscszncm

  • MD5

    0b813c3349387a69277d7f8a0d20fe3d

  • SHA1

    d0c4aa5fffba33d1f7c9c184cd3acb90f6a75650

  • SHA256

    d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad

  • SHA512

    d3b46abc8583f2a12c4e202392e97679147c5d1a691e1525bcf771f89902902740e503f5856574c5e7b8ad1303036485193f48f989201cf25a1ca08c79dc8c34

  • SSDEEP

    12288:F4FAe+jtbt1JcAfGWpfnuayZzCeFPEG6w//j:YAe+jtbt1JcAlnnGC+R/j

Score
10/10
guloaderdiscoverydownloader

Malware Config

Targets

    • Target

      Calyciform.exe

    • Size

      418KB

    • MD5

      0b813c3349387a69277d7f8a0d20fe3d

    • SHA1

      d0c4aa5fffba33d1f7c9c184cd3acb90f6a75650

    • SHA256

      d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad

    • SHA512

      d3b46abc8583f2a12c4e202392e97679147c5d1a691e1525bcf771f89902902740e503f5856574c5e7b8ad1303036485193f48f989201cf25a1ca08c79dc8c34

    • SSDEEP

      12288:F4FAe+jtbt1JcAfGWpfnuayZzCeFPEG6w//j:YAe+jtbt1JcAlnnGC+R/j

    Score
    10/10
    guloaderdiscoverydownloader

    • Guloader family

      guloader

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • 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.

      discovery

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

    • Target

      $PLUGINSDIR/System.dll

    • Size

      11KB

    • MD5

      b0c77267f13b2f87c084fd86ef51ccfc

    • SHA1

      f7543f9e9b4f04386dfbf33c38cbed1bf205afb3

    • SHA256

      a0cac4cf4852895619bc7743ebeb89f9e4927ccdb9e66b1bcd92a4136d0f9c77

    • SHA512

      f2b57a2eea00f52a3c7080f4b5f2bb85a7a9b9f16d12da8f8ff673824556c62a0f742b72be0fd82a2612a4b6dbd7e0fdc27065212da703c2f7e28d199696f66e

    • SSDEEP

      192:4PtkiQJr7jHYT87RfwXQ6YSYtOuVDi7IsFW14Ll8CO:H78TQIgGCDp14LGC

    Score
    3/10
    discovery
    behavioral3behavioral4

    • Target

      Bluetooth Suite help_HUN.chm

    • Size

      63KB

    • MD5

      3051a739bb5569a4740b65aa4fa59f9e

    • SHA1

      4f89dee584612e3cdbbb9d766cbddeca65708058

    • SHA256

      098fce4f92a83a100b0b9b65d2d44d17d2c81ac688bfc5f650e2fdfc61c73d8c

    • SHA512

      7c7d5218d0cacf01defac68c9e66177305533ab269c0aa7a78b561ff1cd81b40f0a2ad91018f6e0b7eaffa7f289ced53ee34a14a8842ec79cb3d9c6501013bb1

    • SSDEEP

      1536:2eV+HBqsKGpvyYsR86GHN2G2LA/He8GayXqH1w6oq3Yo:jgHVIr86uNh22He8GRXS1w6oaYo

    Score
    1/10
    behavioral5behavioral6

MITRE ATT&CK Enterprise v15

Tasks