Analysis

  • max time kernel
    199s
  • max time network
    198s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    07-05-2024 13:32

General

  • Target

    krampus (1).zip

  • Size

    2.4MB

  • MD5

    a6ff8476134d69ac2805e9fe6fc8a00d

  • SHA1

    474821d771064683c3fb243b4ab36b3907b3d423

  • SHA256

    d3b861fab82e305bc0ed504731aa44fbe4717ef1536c7e7a3049b722d95e4c12

  • SHA512

    90f3070e11432194661fffb566526c5bd02d6dfa5daefd8e9f23b5d8ea46fb5e2a06d60385edcd4f93fe401d696f642dea21fb5686e426b37aff44ede417192d

  • SSDEEP

    49152:yWRN8FlMWhpRkI91qIQ855/rMIzpwpibr5K6Rb2zAlosZ3QQw0Nlzwpp:yWRmFlMELkI3FzMIzpwpiRKQbjG0r5Ns

Score
4/10

Malware Config

Signatures

  • Drops file in Windows directory 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: LoadsDriver 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 46 IoCs
  • Suspicious use of SendNotifyMessage 36 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe /idlist,,"C:\Users\Admin\AppData\Local\Temp\krampus (1).zip"
    1⤵
      PID:3120
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      1⤵
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2772
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xcc,0xd0,0xd4,0xa8,0xd8,0x7ffbc4c59758,0x7ffbc4c59768,0x7ffbc4c59778
        2⤵
          PID:2780
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1672 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:2
          2⤵
            PID:3764
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2028 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:8
            2⤵
              PID:1904
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2052 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:8
              2⤵
                PID:2620
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2888 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:1
                2⤵
                  PID:1616
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2896 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:1
                  2⤵
                    PID:1380
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --mojo-platform-channel-handle=4496 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:1
                    2⤵
                      PID:2656
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4680 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:8
                      2⤵
                        PID:2616
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4804 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:8
                        2⤵
                          PID:3580
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4664 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:8
                          2⤵
                            PID:2640
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5032 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:8
                            2⤵
                              PID:2644
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4912 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:8
                              2⤵
                                PID:4936
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --mojo-platform-channel-handle=5004 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:1
                                2⤵
                                  PID:2756
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2936 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:8
                                  2⤵
                                    PID:3836
                                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5020 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:8
                                    2⤵
                                      PID:4376
                                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5024 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:8
                                      2⤵
                                        PID:4296
                                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.15063.0 --gpu-preferences=UAAAAAAAAADoAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAACQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2432 --field-trial-handle=1756,i,18354513212229191407,11454081465146550571,131072 /prefetch:2
                                        2⤵
                                        • Suspicious behavior: EnumeratesProcesses
                                        PID:2536
                                    • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                                      "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                                      1⤵
                                        PID:4376
                                      • C:\Windows\System32\rundll32.exe
                                        C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                        1⤵
                                          PID:4392
                                        • C:\Windows\System32\SystemSettingsBroker.exe
                                          C:\Windows\System32\SystemSettingsBroker.exe -Embedding
                                          1⤵
                                            PID:876
                                          • \??\c:\windows\system32\svchost.exe
                                            c:\windows\system32\svchost.exe -k localservicenetworkrestricted -s RmSvc
                                            1⤵
                                              PID:2644
                                            • \??\c:\windows\system32\svchost.exe
                                              c:\windows\system32\svchost.exe -k localservice -s SstpSvc
                                              1⤵
                                                PID:4212
                                              • \??\c:\windows\system32\svchost.exe
                                                c:\windows\system32\svchost.exe -k netsvcs -s NetSetupSvc
                                                1⤵
                                                • Drops file in Windows directory
                                                PID:4636
                                              • \??\c:\windows\system32\svchost.exe
                                                c:\windows\system32\svchost.exe -k netsvcs -s RasMan
                                                1⤵
                                                  PID:5076

                                                Network

                                                MITRE ATT&CK Enterprise v15

                                                Replay Monitor

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                                                Downloads

                                                • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506

                                                  Filesize

                                                  330B

                                                  MD5

                                                  36e82df51e0038a44284fcb1268f695f

                                                  SHA1

                                                  658a4cc9e5e971de3cb837b0d17b79b138243f94

                                                  SHA256

                                                  432c136e201ad76296eae7ce299cb4da8b236dff3ebc1c44f16c28d88cdd32dc

                                                  SHA512

                                                  ca1f467f44b4c161f639f29079aadfd4b95ebf540283e6957520f4664d5b6bedb0d1b7f0347532f7c011c0f0a34116febc15fc5c5c8922245bad762fcc288d57

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Code Cache\js\index-dir\the-real-index

                                                  Filesize

                                                  96B

                                                  MD5

                                                  eb29e68a2927e75d136d4e1b68eb6cb7

                                                  SHA1

                                                  464c66de51a99bb2a7642e55f66df3f86f11f874

                                                  SHA256

                                                  74298e0e45101a3d4248f84b571c42e602bf04f626e1796d7f7ef81ed15d5104

                                                  SHA512

                                                  e3ae9d00687ed1499f4f03b06a1cad0ad098016a0b7a92ad1f5420933b095a27f7fd7aef1608114482b88f23b35a8b9c22bd68fb030a514cebff08192769636d

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State

                                                  Filesize

                                                  1KB

                                                  MD5

                                                  108fb8327873016853b875702ba688f1

                                                  SHA1

                                                  6621dfe7e246d4342dd672e78a46a51bbc06dce0

                                                  SHA256

                                                  c3739666f151e834a3bd31c6e2607a0871a0a84acbdad50d962b45098ff09d34

                                                  SHA512

                                                  4371d26bf4d778ea4e28c96e0a40a49069f4549d677b5e16ca1231f57a33926102640e6e1d06e7a481c8edf2cba8a849a88f77909dfe33f085863cfaa73dbed3

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                                                  Filesize

                                                  538B

                                                  MD5

                                                  633a2780af6093e405639e82817437b9

                                                  SHA1

                                                  940f4e28b01fa42c8688213631266a13874ac721

                                                  SHA256

                                                  8aabfc92ec87040f4bd2387f1933047ec270f1f022de5fdd6f81c36159bd4c70

                                                  SHA512

                                                  13cb0dcbec14f406abcbdbf7e91bcea3f1abb630666e9a69b3692340e388abf2035a61be5e3c9c6d9bf273b82c16d94855eba7ab61945892df02fe3ebfb8db00

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                                                  Filesize

                                                  371B

                                                  MD5

                                                  a7ae529c629ddb279f913da5698ec180

                                                  SHA1

                                                  5469dc9fe9dc43f4dcd7b2934ba098e8248cd4e5

                                                  SHA256

                                                  65ac1c42c924afcfbe4981bbdf87da00c48f070c3c97929f98ceaed56005f7e6

                                                  SHA512

                                                  bd16545a6c2349ac01b3645797c4b88ce47bd5f8ed37d193a0d8fdd33cebd912a92e4f46f1ef2a74201193ae6ff1e03abfaeee50b5255b164c3efdbf332e2562

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                                  Filesize

                                                  6KB

                                                  MD5

                                                  d2fa569e45ad9d0ccf7ab77a650cf85b

                                                  SHA1

                                                  0348ab90293fa04e1602a5f41bfbcce37f6092f0

                                                  SHA256

                                                  4cb0a677ce74cfc90d7f7c19fe38690da636f6a08b4c91cbf1e9da11b59a97bf

                                                  SHA512

                                                  1380da01439822521e496f3d8e5a43cda68cedeaa96b7a884b23c06ee960de3810e9ef64a7434a41ba8de42bf84392f63732c06d58aa842f683519050b14d12d

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                                  Filesize

                                                  6KB

                                                  MD5

                                                  20c29938c41441d68bf793ccd944bf72

                                                  SHA1

                                                  cbbd9bdb099aedc1e8be695a150260fa675d4a24

                                                  SHA256

                                                  9587f71f0466e2cf26e419869165ab22da3f377bceaafb82a9d820f4a110ab81

                                                  SHA512

                                                  e2c9fbccef2bdcc293787fcc0e2cc9addc52ff93d1af1e447fbd50331b07aea81e5208049e2598449028feabba7dc096d6e9dfeeeb043387c714f98aa79e1f80

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                                  Filesize

                                                  6KB

                                                  MD5

                                                  790c17eac5737fd4cd9347664aee951b

                                                  SHA1

                                                  8ecffa0db45b723d81dd73928254768664b727b4

                                                  SHA256

                                                  6acca787673ff69e41e482f8397504495be9281452f6d3f52cdb281114832538

                                                  SHA512

                                                  85626c24aaab2fca7e3d58cb0b682d516daea3842f36d29fc505629a172d959961c6d8dad95cb82fca63a9e56cb4b157fa697e49b44055bf52cef727dc71b516

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                                  Filesize

                                                  5KB

                                                  MD5

                                                  c385849e333476c8541d57643c4a3e0b

                                                  SHA1

                                                  ba2a5cf2e2932e330f557294969490b5c0fd9492

                                                  SHA256

                                                  c826e52341cb1845d5b3b645718eefedce5189dc15aff1d5893020b0ee389500

                                                  SHA512

                                                  4035aca9749e6544b9cf9eaf0360bf9d73ea91b25bce97a9fef0f8e0293def976eb550d73fc92c6b0666f459bcb9fae121c4c02b2dc9ccf33c67f4793d29e797

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences

                                                  Filesize

                                                  12KB

                                                  MD5

                                                  10ec67d82d140818309ccba261fd7092

                                                  SHA1

                                                  ed06029b60c4af275841d0bb6cfa3264b0ccd8b7

                                                  SHA256

                                                  a0ddc566eea3d939d87e275d25aa05fa123f98f7bbc1d5f089c2f49fcf8a933c

                                                  SHA512

                                                  b790b64d89c956bc8377a6d04b648f4050a86efb3f01c85afad8e2234e2db2aa6755c849c07776e9cf857d3eafa4fdc555d515232901875bcd8907f412672a32

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                                                  Filesize

                                                  272KB

                                                  MD5

                                                  d2a46f7c24ff4f203dcf1910ff0c20d4

                                                  SHA1

                                                  64be2463793858c4ee293657d8027f46f7da4a95

                                                  SHA256

                                                  7c480aaee0a7cffef630fd86c234e55fec55aefc8dbf8692027d3c07a205bb47

                                                  SHA512

                                                  d40ab17c3dbc74e580e6436ec5a0b09e6bc6e53201739dcc37f76a8034763b8002eca3b1609c26e414cf842e0efaa6f6aea8fbbe815220a60655b43a940b50f5

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache

                                                  Filesize

                                                  108KB

                                                  MD5

                                                  b54422dfad84545990fefc9a25cc8f59

                                                  SHA1

                                                  9311b1b9b5e5d3a97e17b237105fb90f6db05163

                                                  SHA256

                                                  38df983089d64d57fd08f2202308bdbdc661b75d8cfe8101ed28c0b570c2cdd9

                                                  SHA512

                                                  a330f30cc38d663aefe5ef6b00358c5178e6965dc3208fd453affbdffd417ecee3dfd805a0c3c317adb42b9a31e1b4797762f8594d3e6e8ca4bd1fc66f375b66

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache~RFe587990.TMP

                                                  Filesize

                                                  92KB

                                                  MD5

                                                  346351d9e209bed45acac376d9ab2136

                                                  SHA1

                                                  124373c9563cb0376ffc511fe185379b336da1f9

                                                  SHA256

                                                  a7c91d418728d642549e8b15738b9efb5d2b77e410d8fe0ff54bb11dd193fe59

                                                  SHA512

                                                  03717e9e5eec9a2c2a33ecc47b8e277279968961a025d48adec23b9a186bcc7f8b3cd95d3a6fff4a88bf90fe3c628dbc5b3b5886135b00577c4c85e917e19b96

                                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\persisted_first_party_sets.json

                                                  Filesize

                                                  2B

                                                  MD5

                                                  99914b932bd37a50b983c5e7c90ae93b

                                                  SHA1

                                                  bf21a9e8fbc5a3846fb05b4fa0859e0917b2202f

                                                  SHA256

                                                  44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a

                                                  SHA512

                                                  27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd

                                                • C:\Users\Admin\Downloads\krampus.zip

                                                  Filesize

                                                  2.4MB

                                                  MD5

                                                  a6ff8476134d69ac2805e9fe6fc8a00d

                                                  SHA1

                                                  474821d771064683c3fb243b4ab36b3907b3d423

                                                  SHA256

                                                  d3b861fab82e305bc0ed504731aa44fbe4717ef1536c7e7a3049b722d95e4c12

                                                  SHA512

                                                  90f3070e11432194661fffb566526c5bd02d6dfa5daefd8e9f23b5d8ea46fb5e2a06d60385edcd4f93fe401d696f642dea21fb5686e426b37aff44ede417192d

                                                • C:\Windows\INF\netrasa.PNF

                                                  Filesize

                                                  22KB

                                                  MD5

                                                  80648b43d233468718d717d10187b68d

                                                  SHA1

                                                  a1736e8f0e408ce705722ce097d1adb24ebffc45

                                                  SHA256

                                                  8ab9a39457507e405ade5ef9d723e0f89bc46d8d8b33d354b00d95847f098380

                                                  SHA512

                                                  eec0ac7e7abcf87b3f0f4522b0dd95c658327afb866ceecff3c9ff0812a521201d729dd71d43f3ac46536f8435d4a49ac157b6282077c7c1940a6668f3b3aea9