Analysis

  • max time kernel
    1799s
  • max time network
    1753s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    02-03-2021 03:18

General

  • Target

    da0921c1e416b3734272dfa619f88c8cd32e9816cdcbeeb81d9e2b2e8a95af4c.dll

  • Size

    3.4MB

  • MD5

    1a3d0fddf65f7cca188499edb6355192

  • SHA1

    1717402591b663767b37b3ce0635d991ace08432

  • SHA256

    da0921c1e416b3734272dfa619f88c8cd32e9816cdcbeeb81d9e2b2e8a95af4c

  • SHA512

    5a46ca0a9079a1ac6c205805a65df737d81fc438b1f6d172aec55f68c1964895d2ad1e41e1d2b309b5ddc7d7cce3d21df932293c25be2aa0fb8ff45b5d26b534

Malware Config

Extracted

Family

icedid

Botnet

1820688957

Campaign

3059128432

C2

timerework.fun

pexxota.space

Attributes
  • auth_var

    6

  • url_path

    /news/

Signatures

  • IcedID, BokBot

    IcedID is a banking trojan capable of stealing credentials.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Blocklisted process makes network request 15 IoCs
  • Downloads MZ/PE file
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Discovers systems in the same network 1 TTPs 2 IoCs
  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Gathers system information 1 TTPs 1 IoCs

    Runs systeminfo.exe.

  • Modifies registry class 2 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\da0921c1e416b3734272dfa619f88c8cd32e9816cdcbeeb81d9e2b2e8a95af4c.dll
    1⤵
    • Checks BIOS information in registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1968
    • C:\Windows\system32\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Local\Temp\vessel-64.dat",update /i:"VisitLeader\license.dat"
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Modifies registry class
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1764
      • C:\Windows\system32\cmd.exe
        cmd.exe /c chcp >&2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1164
        • C:\Windows\system32\chcp.com
          chcp
          4⤵
            PID:920
        • C:\Windows\System32\Wbem\WMIC.exe
          WMIC /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get * /Format:List
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1064
        • C:\Windows\system32\ipconfig.exe
          ipconfig /all
          3⤵
          • Gathers network information
          PID:1240
        • C:\Windows\system32\systeminfo.exe
          systeminfo
          3⤵
          • Gathers system information
          PID:272
        • C:\Windows\system32\net.exe
          net config workstation
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1180
          • C:\Windows\system32\net1.exe
            C:\Windows\system32\net1 config workstation
            4⤵
              PID:1284
          • C:\Windows\system32\nltest.exe
            nltest /domain_trusts
            3⤵
              PID:1484
            • C:\Windows\system32\nltest.exe
              nltest /domain_trusts /all_trusts
              3⤵
                PID:820
              • C:\Windows\system32\net.exe
                net view /all /domain
                3⤵
                • Discovers systems in the same network
                PID:1980
              • C:\Windows\system32\net.exe
                net view /all
                3⤵
                • Discovers systems in the same network
                PID:964
              • C:\Windows\system32\net.exe
                net group "Domain Admins" /domain
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:1372
                • C:\Windows\system32\net1.exe
                  C:\Windows\system32\net1 group "Domain Admins" /domain
                  4⤵
                    PID:1500

            Network

            MITRE ATT&CK Matrix ATT&CK v6

            Execution

            Command-Line Interface

            1
            T1059

            Defense Evasion

            Virtualization/Sandbox Evasion

            1
            T1497

            Install Root Certificate

            1
            T1130

            Modify Registry

            1
            T1112

            Credential Access

            Credentials in Files

            1
            T1081

            Discovery

            Query Registry

            2
            T1012

            Virtualization/Sandbox Evasion

            1
            T1497

            System Information Discovery

            4
            T1082

            Remote System Discovery

            1
            T1018

            Collection

            Data from Local System

            1
            T1005

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
              MD5

              e92176b0889cc1bb97114beb2f3c1728

              SHA1

              ad1459d390ec23ab1c3da73ff2fbec7fa3a7f443

              SHA256

              58a4f38ba43f115ba3f465c311eaaf67f43d92e580f7f153de3ab605fc9900f3

              SHA512

              cd2267ba2f08d2f87538f5b4f8d3032638542ac3476863a35f0df491eb3a84458ce36c06e8c1bd84219f5297b6f386748e817945a406082fa8e77244ec229d8f

            • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
              MD5

              218d8eb98e9a7b4f91fa4e556ac5d6b1

              SHA1

              f061eeaa1d85a6dec6cf86cac484493a5e164c52

              SHA256

              a35b7f97981d8a58f7dc96119cf289150bd50e9115b7869a1b9cef541ef167b6

              SHA512

              d713e21fb27c139633c9b73fa357733b0f12433a859651a7dee928103fbc4683b3d8987eb00a6996f49cf6fe5bf366394b2740605d5f0115b4037628e5046305

            • C:\Users\Admin\AppData\Local\Temp\vessel-64.dat
              MD5

              6d912f3cb045cfce88c96f0da2addf3b

              SHA1

              52286ca71ac4239c5e2faad25e569f83ca4b35ee

              SHA256

              7051f30a6b9c7826f017faf69fe52c6e28c71af1ef5e1dbaae9c6f8a885019a7

              SHA512

              e22e4b89a9f7f659d89949b18df93c24087eaffe7e1399d8ca9eaff3a941fa3e2c4945dea03ffa3fb087ffcaa30c9d16bd29ecc7e158b9e5e4c5eccd530312cd

            • C:\Users\Admin\AppData\Roaming\VisitLeader\license.dat
              MD5

              6f208841cfd819c29a7cbc0a202bd7a3

              SHA1

              0febc376cc066bb668f1a80b969ed112da8e871c

              SHA256

              45b6349ee9d53278f350b59d4a2a28890bbe9f9de6565453db4c085bb5875865

              SHA512

              bc18daf5d6d1eed1091432ca3ea4c050803a74e3ee484c655457d995e82e150be085f748eeeffa80dd6130c1aadb0f789e1e73ffd7eb72f4d7e4fd4c84a00c68

            • \Users\Admin\AppData\Local\Temp\sqlite64.dll
              MD5

              26d773a69f6fad3200d49a7aaa77752b

              SHA1

              3970ffe8aefe0c30daaec65b85fb103c0fc0f2a7

              SHA256

              fca6b7fe66ad9973f18f407e83b56dacd04197cbd35efc498a342d73d6a113e5

              SHA512

              0041b52514460dda19dd065fc46393f6fbe248a4c62fce28e0819abd952756996b34fdea286eb7814a7c868a12656a065278932760e61e53f7102b0dba324e4f

            • \Users\Admin\AppData\Local\Temp\vessel-64.dat
              MD5

              6d912f3cb045cfce88c96f0da2addf3b

              SHA1

              52286ca71ac4239c5e2faad25e569f83ca4b35ee

              SHA256

              7051f30a6b9c7826f017faf69fe52c6e28c71af1ef5e1dbaae9c6f8a885019a7

              SHA512

              e22e4b89a9f7f659d89949b18df93c24087eaffe7e1399d8ca9eaff3a941fa3e2c4945dea03ffa3fb087ffcaa30c9d16bd29ecc7e158b9e5e4c5eccd530312cd

            • memory/272-16-0x0000000000000000-mapping.dmp
            • memory/616-18-0x000007FEF5DB0000-0x000007FEF602A000-memory.dmp
              Filesize

              2.5MB

            • memory/820-22-0x0000000000000000-mapping.dmp
            • memory/920-13-0x0000000000000000-mapping.dmp
            • memory/964-24-0x0000000000000000-mapping.dmp
            • memory/1064-14-0x0000000000000000-mapping.dmp
            • memory/1164-12-0x0000000000000000-mapping.dmp
            • memory/1180-19-0x0000000000000000-mapping.dmp
            • memory/1240-15-0x0000000000000000-mapping.dmp
            • memory/1284-20-0x0000000000000000-mapping.dmp
            • memory/1372-25-0x0000000000000000-mapping.dmp
            • memory/1484-21-0x0000000000000000-mapping.dmp
            • memory/1500-26-0x0000000000000000-mapping.dmp
            • memory/1764-6-0x0000000000000000-mapping.dmp
            • memory/1968-4-0x000007FEF54D0000-0x000007FEF5CE3000-memory.dmp
              Filesize

              8.1MB

            • memory/1968-3-0x000007FEF54D0000-0x000007FEF5CE3000-memory.dmp
              Filesize

              8.1MB

            • memory/1968-5-0x000007FEF54D1000-0x000007FEF54D3000-memory.dmp
              Filesize

              8KB

            • memory/1968-2-0x000007FEFB831000-0x000007FEFB833000-memory.dmp
              Filesize

              8KB

            • memory/1980-23-0x0000000000000000-mapping.dmp