General

  • Target

    ec9cb018ca2a85fb0199232794cd0f7f_JaffaCakes118

  • Size

    1.0MB

  • Sample

    240920-cbfjsssgrh

  • MD5

    ec9cb018ca2a85fb0199232794cd0f7f

  • SHA1

    3d1b11f24086362987594a9d3ca39cdf95aa83df

  • SHA256

    a91e0d462c3d7ee561707e53ee221532b4a8e189c34ab7e0998768029bc4c07f

  • SHA512

    3ee9f2d9ac97c5bfe66a2c6d1a3dcff4dc6737171bcd22950a4b737736e07c929a1ca2ac9fa907cca8f5d46c7ab6a16c8fa40a1c821adf5c1146ef2c6ca2e0da

  • SSDEEP

    24576:CWAMkkD09Zm+QkM5rBRpemtjK48Q4jNDMOX:TAMkCJaM51umo4ejd3

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

DECIMO

C2

decimoremcdns.duckdns.org:1011

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-EXFS95

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    wikipedia;solitaire;

Targets

    • Target

      IIMG1245950021323IMAGN09756912IMAGENVISTAPREVIA0129100011.exe

    • Size

      1.0MB

    • MD5

      f386cbc90a1eb84a3f6e287911320dfe

    • SHA1

      cabe3ee72469a5cd4b68d3de461bc421082ae297

    • SHA256

      59ccd48279374377ac38f767764df31243b433c33a0df39daf005d950b5efba8

    • SHA512

      f8fd87da4ef78a2738922eb2e7c2b58f19efe3480328a9bd0ec9c1bef638418e15cfc6f5516855be2aef65d0916724ebb975b5fd4646c5b39691a5ec2d93bb69

    • SSDEEP

      24576:LwgszDzEY4Ecy7DbDTafOuDZ/myydIESihr2eOkaHYmwmeBQSTG:u7r97D/TJuFbBN6ckaHYHVQGG

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Loads dropped DLL

    • Target

      $APPDATA/app_browser/25.opends60.dll

    • Size

      44B

    • MD5

      09537416318f379396bddbc18046de39

    • SHA1

      dc6111549ff49afa587425603cc0c545b034b988

    • SHA256

      b407fe7ddcc7303ef167873a6498e8ebd771e9b4b432ad0a458a029574ca6afd

    • SHA512

      20b9ab08d3e940d687404436e2d6c8b4c1a9121987382c6253d7d93fc2b556fb8780742af08d8b73e4d50ea9b23d2e62298669650df60ed38e6f23c5c0155619

    Score
    1/10
    • Target

      $APPDATA/app_browser/40.opends60.dll

    • Size

      46B

    • MD5

      a800e1be610c1fc4412a4557e5654f6d

    • SHA1

      0d5760e3107c174d735e52c9c239e27164df6657

    • SHA256

      c78b52098ab7a63f97cf55a134bceef6cb56412d5e6a6230cf0d666ba1f07cc6

    • SHA512

      3bb1e3b36126396a19f5ba935deda62c3b2695bf3801eb7fd8d54e4bfee604aaa97fc348e94bac970e2c8d5b70cc132a05cedfd447b8558cc494a2557734c9d0

    Score
    1/10
    • Target

      $APPDATA/app_browser/MicrosoftVisualStudioWebUI.dll

    • Size

      2KB

    • MD5

      b1feacfce6eb230192b82d04fd82ad9a

    • SHA1

      930208d7d7a806ed3466150fc34709fb6223896a

    • SHA256

      dfce0c806a64327f03df9b4d55accb008f79ec255e6987d3f12f9791638a4935

    • SHA512

      9e5802c501cc3137fb13b3c2e63d1b33f2d82a8524616972ee1d6a45bad49049363f762fe0444fcd462b4a972d4e94851b4c149b9d697ec727b731971f21309c

    Score
    1/10
    • Target

      $APPDATA/app_browser/VsWebSiteInterop.dll

    • Size

      48KB

    • MD5

      4fb0672d5842ddb98898784461480e8b

    • SHA1

      6a927dd928c29ab1404b4d3c27a204880e0d12e6

    • SHA256

      b7a43778327d9052a0c55e33694c400d3ca7fa5bd40d6b0102918c120d2d5463

    • SHA512

      54a1bd835eaf7785348531b84d5225997f6c4d475357d328d29001c2e4ecb584a7dc0bf0c55399e8e70cbe342dffc18d632d146398bd6231e612761c18f95e4c

    • SSDEEP

      768:MOZO5OU5ngPG1lkA2p60B57KFe27CB4bZt9lytWHPnEUHw73oCADNSxtFA:MOZO5OU5ngPG1lkA2gP02+B4bZt1vEEv

    Score
    1/10
    • Target

      $APPDATA/app_browser/aspnetregbrowsers.exe

    • Size

      13KB

    • MD5

      a394c927a7ad7befdf7136144232a13a

    • SHA1

      cc95d2160686c7d95cfb5334fb83eac5fd176cb4

    • SHA256

      59146d16e5a1b9c2e47eb1447e6ae2fa403c4182107e893a7cf33c81e8023a54

    • SHA512

      4938539bab4e257a57c9b336fae979ce91cf1f30dbfcaae2c164bb44c85a130c7a85ffe19f6007b1c75e6a77e5abb4948e1ca8c2a9817cf8fdafe2ae0bfbf3fc

    • SSDEEP

      192:jowEhZpVUjCZKb338cV/pqlFOxWFlhm4QSXoOx0x6EpWeNHJW/:jowEhdUjtNwEgFrSSXHirpWKHJW

    Score
    3/10
    • Target

      $APPDATA/app_browser/mscortim.dll

    • Size

      10KB

    • MD5

      59d2c93ae3c2c269fc26b3ecf9a0f3af

    • SHA1

      baab6861d2e432509f216878d79a5e58c3d46927

    • SHA256

      6e981ae3c91194fe4d524c8e3f75d34b9b8c980d2edbad2a6d05143e3b62646c

    • SHA512

      2faea31c0c68e94d1976b0e20342f16fa824303a890ce6a15375ea6c5cf26516107980ab8ede521c5bfad03f46422a714daf641aa171f754fe086af4487b3bd8

    • SSDEEP

      192:VmT/J28Hm+Ook7Vm1Nf30FeXXv5/q/5I3XW6Mbrk1UqWBNsoW/q:VmT3m+OokRm1aS5y/WG6MGtWrsoWC

    Score
    3/10
    • Target

      $APPDATA/postinfo/34.opends60.dll

    • Size

      45B

    • MD5

      661924ba77b48f57d874a09d9dc5de6c

    • SHA1

      06ad89e6c1827cc4b0017efb54cfd4b614e4d276

    • SHA256

      6f752eef54d5eb2a9dc50ee5d59d5d0493511a0f2ec6370d1b8bb53b0f604712

    • SHA512

      9f08a50255627b335d8983d782885b0f4ba832e24c8b2ffe9bf32052b2384467282e6be4a88bb920dab95c35a944186fb0fc81384dc8e78af6dfea804bdcfd87

    Score
    1/10
    • Target

      $APPDATA/postinfo/rcxditui.dll

    • Size

      5KB

    • MD5

      cc869c04e8771d08397dc86374fe5a5e

    • SHA1

      d7cd17b9607538dcdd6fc267ee504b37740992ff

    • SHA256

      420007c3e0a76ac880679f323653d3b9321832f578ca4dc1c2a1e5775a0f77dd

    • SHA512

      684114317ab54248d20727058f58e592cffee865e876b8155c4426ee71cf15bfacaee07e2c9ef49c8d3f99cf6f0e20ae8800d2df88f0550e5304ab39ba468ef4

    • SSDEEP

      48:KqiJ6OqhgmLwQpXMbqwcI65y7+OiaC+IZWo6zqhpm3F5WPWghnpgX:jOqhiZF6zSEWEOjWPVn0

    Score
    1/10
    • Target

      $PLUGINSDIR/advsplash.dll

    • Size

      6KB

    • MD5

      aefa9685c635b9568f0490815dac8af6

    • SHA1

      7862e61d8fe5c8a1bf32a8e8f433d5b7bd7928cf

    • SHA256

      528cab75eb926894bf7662819802888cde1e883c9b5d1b3af11ff6ab277381a5

    • SHA512

      928d8374b895b6d396afce0492def1510bab0551232a00d5dbd932d5f7cc25b8f66aa2fe83a446006c2a797879196ee6a9fc6fd27e14f84c10f4e9a83e5c915a

    • SSDEEP

      96:YIUNaXnnXyEIPtXvZhr5RwiULuxDtJD+wolpE:YIx3XyEwXvZh1RwnLUDtt+I

    Score
    3/10
    • Target

      $PLUGINSDIR/nsExec.dll

    • Size

      7KB

    • MD5

      f27689c513e7d12c7c974d5f8ef710d6

    • SHA1

      e305f2a2898d765a64c82c449dfb528665b4a892

    • SHA256

      1f18f4126124b0551f3dbcd0fec7f34026f930ca509f04435657cedc32ae8c47

    • SHA512

      734e9f3989ee47a86bee16838df7a09353c7fe085a09d77e70d281b21c5477b0b061616e72e8ac8fcb3dda1df0d5152f54dcc4c5a77f90fbf0f857557bf02fbc

    • SSDEEP

      96:JpmkmwmHDPVhklfSoRPB+YSvWvZckH69MSz00vQFHhAVvSGYuHnUNy2DCP:J+PVhYfSokvW2CsQFBAVaGdHnUNR

    Score
    3/10
    • Target

      $TEMP/TowbarHamartia.dll

    • Size

      54KB

    • MD5

      d65c8ac05fd814a0327588b6b485c43e

    • SHA1

      5555dc0c343f857c4732683b4018a271b17a6ca0

    • SHA256

      030bcfc5c4629fff97b77925e1650c9bb9b267c1018f2fc754f90afc143522e1

    • SHA512

      a40aa752ba28afb4e4b40ebb551612a819876dde50414c9ff1c0bf6b46618ab9d7b459eca0262fc0b9a13a649123c37fede7b20db4b8f3344c81551041d86fa0

    • SSDEEP

      768:8wOOFDjuI5DU6JztEwaOKH2MBhQztYNUeLu0k1/ni6JULUOlZqSfZT:8wtFuIPJqwa2MBeeK5/ZJULUOPV

    Score
    3/10
    • Target

      $TEMP/gamps.exe

    • Size

      39KB

    • MD5

      f4392de13dfac4aa804152adbd93e793

    • SHA1

      ee90e001945afde21dcd12d542f0eabb9f94f4a6

    • SHA256

      31ae1165f008db6195108f984d3fe495f10c6ac4a5f74bd365102f84b57d9aba

    • SHA512

      40bf82d364c757576c3d7897d6d7413b64089056a8279433b5d5a35ada7a01607754c29678afd9bada5934d49c26f800132d400c864b38234fba4017bcf01de4

    • SSDEEP

      768:5d3r7gefzh645WMbXUcKHBx5BOST/FHPePzaUt8P61t1nVG+:5BrLQeOM2Pgjte+

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

    • Blocklisted process makes network request

MITRE ATT&CK Enterprise v15

Tasks

static1

Score
3/10

behavioral1

remcosdecimodiscoveryrat
Score
10/10

behavioral2

remcosdecimodiscoveryrat
Score
10/10

behavioral3

Score
1/10

behavioral4

Score
1/10

behavioral5

Score
1/10

behavioral6

Score
1/10

behavioral7

Score
1/10

behavioral8

Score
1/10

behavioral9

Score
1/10

behavioral10

Score
1/10

behavioral11

discovery
Score
3/10

behavioral12

discovery
Score
3/10

behavioral13

discovery
Score
3/10

behavioral14

discovery
Score
3/10

behavioral15

Score
1/10

behavioral16

Score
1/10

behavioral17

Score
1/10

behavioral18

Score
1/10

behavioral19

discovery
Score
3/10

behavioral20

discovery
Score
3/10

behavioral21

discovery
Score
3/10

behavioral22

discovery
Score
3/10

behavioral23

discovery
Score
3/10

behavioral24

discovery
Score
3/10

behavioral25

remcosdecimodiscoveryrat
Score
10/10

behavioral26

remcosdecimodiscoveryrat
Score
10/10