General

  • Target

    27bcef83c229a331655d6ed79bfb705976955b27e85e2cdd4dae479cc116d053

  • Size

    2.0MB

  • Sample

    240312-3b77xsea4z

  • MD5

    e047079575fc4b4d0e98bdb8d5e8c67b

  • SHA1

    4ade59737e7270d3bc3b68c62763936069403f81

  • SHA256

    27bcef83c229a331655d6ed79bfb705976955b27e85e2cdd4dae479cc116d053

  • SHA512

    9859d6868232e71b3de2a3b61dc258b86b40460dc42ad38f288dc313bcc0be16e1231abbcaa134f9ffc8e5edf51b5577b31e296f135c35f916efc55ee74a9104

  • SSDEEP

    49152:LXm5ahPlga4jo+WRR0g2OFDcnHaefttJmiNzRsuP:Dm5U9X5TMg2A8BttYi9P

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.145

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Targets

    • Target

      27bcef83c229a331655d6ed79bfb705976955b27e85e2cdd4dae479cc116d053

    • Size

      2.0MB

    • MD5

      e047079575fc4b4d0e98bdb8d5e8c67b

    • SHA1

      4ade59737e7270d3bc3b68c62763936069403f81

    • SHA256

      27bcef83c229a331655d6ed79bfb705976955b27e85e2cdd4dae479cc116d053

    • SHA512

      9859d6868232e71b3de2a3b61dc258b86b40460dc42ad38f288dc313bcc0be16e1231abbcaa134f9ffc8e5edf51b5577b31e296f135c35f916efc55ee74a9104

    • SSDEEP

      49152:LXm5ahPlga4jo+WRR0g2OFDcnHaefttJmiNzRsuP:Dm5U9X5TMg2A8BttYi9P

    • Stealc

      Stealc is an infostealer written in C++.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Target

      $PLUGINSDIR/INetC.dll

    • Size

      21KB

    • MD5

      2b342079303895c50af8040a91f30f71

    • SHA1

      b11335e1cb8356d9c337cb89fe81d669a69de17e

    • SHA256

      2d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f

    • SHA512

      550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47

    • SSDEEP

      384:KOoVVefeWsI7rsIquPLNN546o0Ac9khYLMkIX0+Gzyekv:4VVaeE7wIqyJN5i

    Score
    3/10
    • Target

      $TEMP/BroomSetup.exe

    • Size

      1.7MB

    • MD5

      eee5ddcffbed16222cac0a1b4e2e466e

    • SHA1

      28b40c88b8ea50b0782e2bcbb4cc0f411035f3d5

    • SHA256

      2a40e5dccc7526c4982334941c90f95374460e2a816e84e724e98c4d52ae8c54

    • SHA512

      8f88901f3ebd425818db09f268df19ccf8a755603f04e9481bcf02b112a84393f8a900ead77f8f971bfa33fd9fa5636b7494aaee864a0fb04e3273911a4216dc

    • SSDEEP

      49152:YUnaQiKJ8N+AadA6mICFhNGffVCPi9NUko6jE:ZwKa+u6mICFSwPKDK

    Score
    7/10
    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Target

      $TEMP/syncUpd.exe

    • Size

      200KB

    • MD5

      c722591f624fb69970f246b8c81d830f

    • SHA1

      85516decea5d6987bebe39cbadf36053beaf4bb0

    • SHA256

      13cd1152a19fdac6581cac2bd822f34bd3026ea1783ff231e299b6d28c046a6a

    • SHA512

      822584c5c8a0813af4d845e80919776c71a43464ab719d1c303ebaae6a8ed47763183566bedc9be2e8c44de8ee6fd62d1e12be471e5d5c73ae4b1dcdaa34a908

    • SSDEEP

      3072:8PDOu5suCmavnBRsuP6GTdbB27zP6FtHPUxX1GOL3+:455zaPBRPPj27uPH8jzu

    • Stealc

      Stealc is an infostealer written in C++.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

2
T1053

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Scheduled Task/Job

2
T1053

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Scheduled Task/Job

2
T1053

Defense Evasion

Modify Registry

2
T1112

Credential Access

Unsecured Credentials

6
T1552

Credentials In Files

6
T1552.001

Discovery

Query Registry

6
T1012

System Information Discovery

7
T1082

Remote System Discovery

2
T1018

Collection

Data from Local System

6
T1005

Tasks