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Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2024, 05:41 UTC

General

  • Target

    2024-01-24_1eeafc1260cb8462a2ac70e02f0195c6_cryptolocker.exe

  • Size

    94KB

  • MD5

    1eeafc1260cb8462a2ac70e02f0195c6

  • SHA1

    f9b72c480bc386c481ad3a8c69ccd14adfcb54ee

  • SHA256

    ed7504ecf2fc57070f7f55422ce4727babb7abe297dac633bdb16d82f7cb9949

  • SHA512

    bff6bd86f3eaaa5fddfbd12430b081c14f505ef169b04b18c1b963bcaebd27d28768db6718ef6a4c5d63485f607b9360eb50b8effa6664f821ef51fec95a294b

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp01U:AnBdOOtEvwDpj6zC

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-24_1eeafc1260cb8462a2ac70e02f0195c6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_1eeafc1260cb8462a2ac70e02f0195c6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4448
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3928

Network

  • flag-us
    DNS
    emrlogistics.com
    asih.exe
    Remote address:
    8.8.8.8:53
    Request
    emrlogistics.com
    IN A
    Response
    emrlogistics.com
    IN CNAME
    traff-3.hugedomains.com
    traff-3.hugedomains.com
    IN CNAME
    hdr-nlb4-0bbd2e21834cb637.elb.us-east-2.amazonaws.com
    hdr-nlb4-0bbd2e21834cb637.elb.us-east-2.amazonaws.com
    IN A
    3.18.7.81
    hdr-nlb4-0bbd2e21834cb637.elb.us-east-2.amazonaws.com
    IN A
    3.19.116.195
  • flag-us
    DNS
    183.142.211.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    183.142.211.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    173.178.17.96.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    173.178.17.96.in-addr.arpa
    IN PTR
    Response
    173.178.17.96.in-addr.arpa
    IN PTR
    a96-17-178-173deploystaticakamaitechnologiescom
  • flag-us
    DNS
    68.159.190.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    68.159.190.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    95.221.229.192.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    95.221.229.192.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    196.249.167.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    196.249.167.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    183.59.114.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    183.59.114.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    171.39.242.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    171.39.242.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    18.134.221.88.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    18.134.221.88.in-addr.arpa
    IN PTR
    Response
    18.134.221.88.in-addr.arpa
    IN PTR
    a88-221-134-18deploystaticakamaitechnologiescom
  • flag-us
    DNS
    81.171.91.138.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    81.171.91.138.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    240.221.184.93.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    240.221.184.93.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    14.227.111.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    14.227.111.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    194.178.17.96.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    194.178.17.96.in-addr.arpa
    IN PTR
    Response
    194.178.17.96.in-addr.arpa
    IN PTR
    a96-17-178-194deploystaticakamaitechnologiescom
  • flag-us
    DNS
    28.73.42.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    28.73.42.20.in-addr.arpa
    IN PTR
    Response
  • 3.18.7.81:443
    emrlogistics.com
    asih.exe
    260 B
    5
  • 3.19.116.195:443
    emrlogistics.com
    asih.exe
    260 B
    5
  • 3.18.7.81:443
    emrlogistics.com
    asih.exe
    260 B
    5
  • 3.19.116.195:443
    emrlogistics.com
    asih.exe
    260 B
    5
  • 3.18.7.81:443
    emrlogistics.com
    asih.exe
    260 B
    5
  • 3.19.116.195:443
    emrlogistics.com
    asih.exe
    260 B
    5
  • 3.18.7.81:443
    emrlogistics.com
    asih.exe
    260 B
    5
  • 3.19.116.195:443
    emrlogistics.com
    asih.exe
    104 B
    2
  • 8.8.8.8:53
    emrlogistics.com
    dns
    asih.exe
    62 B
    192 B
    1
    1

    DNS Request

    emrlogistics.com

    DNS Response

    3.18.7.81
    3.19.116.195

  • 8.8.8.8:53
    183.142.211.20.in-addr.arpa
    dns
    73 B
    159 B
    1
    1

    DNS Request

    183.142.211.20.in-addr.arpa

  • 8.8.8.8:53
    173.178.17.96.in-addr.arpa
    dns
    72 B
    137 B
    1
    1

    DNS Request

    173.178.17.96.in-addr.arpa

  • 8.8.8.8:53
    68.159.190.20.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    68.159.190.20.in-addr.arpa

  • 8.8.8.8:53
    95.221.229.192.in-addr.arpa
    dns
    73 B
    144 B
    1
    1

    DNS Request

    95.221.229.192.in-addr.arpa

  • 8.8.8.8:53
    196.249.167.52.in-addr.arpa
    dns
    73 B
    147 B
    1
    1

    DNS Request

    196.249.167.52.in-addr.arpa

  • 8.8.8.8:53
    183.59.114.20.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    183.59.114.20.in-addr.arpa

  • 8.8.8.8:53
    171.39.242.20.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    171.39.242.20.in-addr.arpa

  • 8.8.8.8:53
    18.134.221.88.in-addr.arpa
    dns
    72 B
    137 B
    1
    1

    DNS Request

    18.134.221.88.in-addr.arpa

  • 8.8.8.8:53
    81.171.91.138.in-addr.arpa
    dns
    72 B
    146 B
    1
    1

    DNS Request

    81.171.91.138.in-addr.arpa

  • 8.8.8.8:53
    240.221.184.93.in-addr.arpa
    dns
    73 B
    144 B
    1
    1

    DNS Request

    240.221.184.93.in-addr.arpa

  • 8.8.8.8:53
    14.227.111.52.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    14.227.111.52.in-addr.arpa

  • 8.8.8.8:53
    194.178.17.96.in-addr.arpa
    dns
    72 B
    137 B
    1
    1

    DNS Request

    194.178.17.96.in-addr.arpa

  • 8.8.8.8:53
    28.73.42.20.in-addr.arpa
    dns
    70 B
    156 B
    1
    1

    DNS Request

    28.73.42.20.in-addr.arpa

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\asih.exe

    Filesize

    94KB

    MD5

    a8593b03e665aae07b9db5add6f58e2d

    SHA1

    e41f9ab7c5f4b6a40a813533650fb63f8772b179

    SHA256

    336e9b5d1c96fb31055f57db96e82b6b213fcd689c47847e4bbdb47a52501a1a

    SHA512

    59be86c045fe33e51c4ad59f893f912fb4a60ae9ff90543df6f459dd9db8dc93b21decfc3618443124f5064802d58cf15ded99dc87f4d10a0286058f6399e045

  • memory/3928-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3928-20-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/3928-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4448-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4448-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4448-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4448-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/4448-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

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