Analysis

  • max time kernel
    65s
  • max time network
    57s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    03-08-2024 11:38

General

  • Target

    quantum.exe

  • Size

    417KB

  • MD5

    3dc9bad7720a01598aa14e55baca7413

  • SHA1

    99668a82a34ec17340fccecbc2ef0985b84704a0

  • SHA256

    a54a38a9aab0bde31b2065d8b88a8e6569cc66c3f6137379b6b5a62361c319f0

  • SHA512

    567581747132d56595c719e4d454bf6e73ba941581701b28287559f899ea5813a0abb7ff2df25cb3d7c99d3203c8a8ab361ea37b3b8e8392748fb855ee4cbaba

  • SSDEEP

    6144:Jr9Zzp4MmFrxodIFRfiM6baHcgrRS8gPFYTdOjbGXypU5:Jp4MmxxhfiMzcyRQFYTdqTa

Malware Config

Extracted

Path

C:\Users\Admin\Documents\welp.txt

Ransom Note
Hello there! All your files are encrypted, but do not worry, if you're not poor that is. If you send us 50$ worth of Bitcoin, you will get a key that will decrypt all your files! Yipeeeee! Contact us at [email protected] After you send the $50 worth of BTC to the wallet, you will receive the key. Don't try to use any third party software to decrypt your files if you don't want to lose all your data.

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 IoCs
  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 35 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\quantum.exe
    "C:\Users\Admin\AppData\Local\Temp\quantum.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3612
    • C:\Users\Admin\AppData\Roaming\quantum.exe
      "C:\Users\Admin\AppData\Roaming\quantum.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3484
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\welp.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:2888
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --single-argument C:\Users\Admin\Desktop\BackupGrant.shtml
    1⤵
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3552
    • 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,0xd0,0xd4,0xa8,0xd8,0x7ff8b7d39758,0x7ff8b7d39768,0x7ff8b7d39778
      2⤵
        PID:2348
      • 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=1548 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:2
        2⤵
          PID:2948
        • 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=1844 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:8
          2⤵
            PID:2904
          • 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=2140 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:8
            2⤵
              PID:3640
            • 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=2872 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:1
              2⤵
                PID:4492
              • 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=2904 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:1
                2⤵
                  PID:5072
                • 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=4588 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:1
                  2⤵
                    PID:2796
                  • 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=8 --mojo-platform-channel-handle=4660 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:1
                    2⤵
                      PID:4440
                    • 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=5100 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:8
                      2⤵
                        PID:1832
                      • 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=5184 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:8
                        2⤵
                          PID:4852
                        • 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=5088 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:8
                          2⤵
                            PID:3616
                          • 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=12 --mojo-platform-channel-handle=3756 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:1
                            2⤵
                              PID:2172
                            • 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=5436 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:8
                              2⤵
                                PID:236
                              • 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=5484 --field-trial-handle=1720,i,9677004928805898833,9435236942668007698,131072 /prefetch:8
                                2⤵
                                  PID:4876
                              • 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:2524

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_000001

                                  Filesize

                                  209KB

                                  MD5

                                  3e552d017d45f8fd93b94cfc86f842f2

                                  SHA1

                                  dbeebe83854328e2575ff67259e3fb6704b17a47

                                  SHA256

                                  27d9c4613df7a3c04da0b79c13217aa69992b441acb7e44bf2a7578ca87d97d6

                                  SHA512

                                  e616436f2f15615429c7c5c37de3990c3e86c5e1da7d75a0f524fc458b75d44a5be1a3648a628d63e1cf8aa062e08b538f2f2bc9c6a0b42157beb24f82c571d9

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

                                  Filesize

                                  371B

                                  MD5

                                  59673b63e86bb36943dda42e3045e967

                                  SHA1

                                  a8718aa7bd8da18273cae806f70fa0e6c000f87d

                                  SHA256

                                  02a6574dea73bd3ba1b9d8834f9c8ca45e16fc610d9765a614bb118b7a5f8100

                                  SHA512

                                  d4e248c23203a8f35dcc8fbc7b2a7999bd0db942738d9f1fe8503fb43c19f3d8f8ab118ad7d3c355cf6d536207f365a9bc9e79d3dc8528033ba4db5af13cdfa1

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

                                  Filesize

                                  371B

                                  MD5

                                  1b492140c3434e156da42de1fe0ef592

                                  SHA1

                                  f0d7aa7de8ab0acb0bbf91d18c553e75579eec80

                                  SHA256

                                  18533311cc968d46b23cb71d95805a46d60f4117f3096121aaa455550996d28a

                                  SHA512

                                  0cf0c5050dc40f9d3c3fffc5887e584c62ff1130ad92c62d4ae06c750293aa7c08c2f772782dd9d25472efbfb839cdc0388b6ebf8db2ae89f343f7de21544541

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

                                  Filesize

                                  6KB

                                  MD5

                                  fd5ce9aba48280860d2931489824f948

                                  SHA1

                                  9b30ac8a2264bf84904ce42379677c7079c053e4

                                  SHA256

                                  c8661f5bf54f07e095fa81abc6cb98ccd96c79c4c1a4afede807c373f103e294

                                  SHA512

                                  a7ad65b158f7f38ccecb14867fb7094bd336e6e8eaafaf94eb0ab443752d1da00c294cff3e01191b27425de92c6514b74feb6b0f010d7381fcf05c51d46fd8bd

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

                                  Filesize

                                  6KB

                                  MD5

                                  0bafdae949d725e6c1213e597ce06bc3

                                  SHA1

                                  97dd2ea4ab91416454b8c0db2e1dfffa5bab4468

                                  SHA256

                                  4f1283e648f2ffb2fd279ca64e7eaeb47a5d6232df2838558a496f9d3c088c00

                                  SHA512

                                  2f3f290c177490eb68c4fbdccf2fa48f6633a720a6fb9b60e97f7f773db55dce09a30ac5250aee204f36a2b2ab9d66a015f25b8698d6203b6c0d67c581c74194

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

                                  Filesize

                                  15KB

                                  MD5

                                  c67c3ad32280b4470dd344afa7cd380d

                                  SHA1

                                  d92f62c2b1496c583dbb67cea45207d635ddb395

                                  SHA256

                                  5e108db0fa441fa67deb59ce47492d520e8e40a670b74154e7351bff757c1a11

                                  SHA512

                                  00a9ef4d629c2de0055fb12f5375025fbb2562d458019bb439ec8d58ef143acaf961572e889c9a6bfed9bd11f53c38425d0d275ddc7345f45e5515fe865d14a3

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

                                  Filesize

                                  295KB

                                  MD5

                                  69fba6617376a1f9267aba6539884c36

                                  SHA1

                                  4db85ff0326934776420508cb1712ef1320f815b

                                  SHA256

                                  dae5bf14100a15e4e10e09acb26ed5a2d43d56af019e936c1e5ae8117df68935

                                  SHA512

                                  9e3e590db162cb54c43e40d0d3aa7024722de3e35d6402e2eb8aa92e10118bdc0f0a061856900e64088eac1ae7a898e7c5a74f894a0af86e05870342beb93159

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

                                  Filesize

                                  137KB

                                  MD5

                                  183b089114b06ccdcc01d980c3c3b5c4

                                  SHA1

                                  577f3e4dac0f8d26ede39cdb2934a98cfeab0422

                                  SHA256

                                  748994573aab534fa25bc46ba87e627a1a9d8113e398f8b8312095fe1cca97a6

                                  SHA512

                                  f7b8d4be68bdd359615efcdc6c3f5f7ddf4ab4c907ae439988071fefcf930e8b85baaf6dccce5bfda5f9d63929f6548bdb716b2ee314187006d206daf70fd9d6

                                • 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\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\quantum.exe.log

                                  Filesize

                                  226B

                                  MD5

                                  d78293ab15ad25b5d6e8740fe5fd3872

                                  SHA1

                                  51b70837f90f2bff910daee706e6be8d62a3550e

                                  SHA256

                                  4d64746f8d24ec321b1a6c3a743946b66d8317cbc6bac6fed675a4bf6fa181f3

                                  SHA512

                                  1127435ef462f52677e1ef4d3b8cfdf9f5d95c832b4c9f41526b7448d315f25d96d3d5454108569b76d66d78d07ea5ba4a1ba8baee108e8c1b452ba19cc04925

                                • C:\Users\Admin\AppData\Roaming\quantum.exe

                                  Filesize

                                  417KB

                                  MD5

                                  3dc9bad7720a01598aa14e55baca7413

                                  SHA1

                                  99668a82a34ec17340fccecbc2ef0985b84704a0

                                  SHA256

                                  a54a38a9aab0bde31b2065d8b88a8e6569cc66c3f6137379b6b5a62361c319f0

                                  SHA512

                                  567581747132d56595c719e4d454bf6e73ba941581701b28287559f899ea5813a0abb7ff2df25cb3d7c99d3203c8a8ab361ea37b3b8e8392748fb855ee4cbaba

                                • C:\Users\Admin\Documents\welp.txt

                                  Filesize

                                  427B

                                  MD5

                                  025e685a33afef1bb7772b41f46d5700

                                  SHA1

                                  39c246daf9003a7a38cfb2edb5f66b2766c65c39

                                  SHA256

                                  fc4d2fe0b5c84f7ffa475e1cf9da6185e8bb162a03899bcfe015df64778cc380

                                  SHA512

                                  1d3d29da8bb4390ebe563e046d382ced7e1d4abb7870f4a7bee64683d3ae236375492b7ad7fb3e64c800859cf80da43406243f2e5bd36bc262e7bff1e5168b29

                                • memory/3484-10-0x00007FF8D8220000-0x00007FF8D83FB000-memory.dmp

                                  Filesize

                                  1.9MB

                                • memory/3484-434-0x00007FF8D8220000-0x00007FF8D83FB000-memory.dmp

                                  Filesize

                                  1.9MB

                                • memory/3484-13-0x00007FF8D8220000-0x00007FF8D83FB000-memory.dmp

                                  Filesize

                                  1.9MB

                                • memory/3612-0-0x00000000002B0000-0x000000000031E000-memory.dmp

                                  Filesize

                                  440KB

                                • memory/3612-9-0x00007FF8D8220000-0x00007FF8D83FB000-memory.dmp

                                  Filesize

                                  1.9MB

                                • memory/3612-1-0x00007FF8D8220000-0x00007FF8D83FB000-memory.dmp

                                  Filesize

                                  1.9MB