Analysis

  • max time kernel
    95s
  • max time network
    96s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    02-08-2024 16:37

General

  • Target

    SolaraBootstrapper.exe

  • Size

    303KB

  • MD5

    7553c649cdd15e01bc47cfa2dc88fdae

  • SHA1

    1ad33f546146e52d05e667f0907262c1e55cb958

  • SHA256

    12a8d265fe2c0fb139d2dc9994ebdfaf7aea93a2ecc18dc4e132f1a04d36eda6

  • SHA512

    b40c066725b3f9ece6f75dd11598ad73f702b608253a4fa990774d2a61433b7a8218e19c3f5b348b62d18f533069f0cb228bcd5904497e98cd8f77d94a9d1849

  • SSDEEP

    6144:k1E0T6MDdbICydeB1MnyCvG/9GzC6jmA1D0Kzp:k1z6yCvGFG+Y1Dtp

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1256365156401680444/Q4ybvTW8-P8cHM7v5CKOThKUJqTZ4f03jPUNC4To8TouPRnWl442RcsKLBOptm6uvg63

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of FindShellTrayWindow 51 IoCs
  • Suspicious use of SendNotifyMessage 48 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
    "C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:288
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 288 -s 1056
      2⤵
        PID:2968
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      1⤵
        PID:2960
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x4f8
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2736
      • C:\Windows\explorer.exe
        "C:\Windows\explorer.exe"
        1⤵
          PID:2668
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe"
          1⤵
          • Enumerates system info in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:1460
          • 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=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6cd9758,0x7fef6cd9768,0x7fef6cd9778
            2⤵
              PID:620
            • 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=1112 --field-trial-handle=1412,i,11431968620446289180,11003293425382803037,131072 /prefetch:2
              2⤵
                PID:2180
              • 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=1036 --field-trial-handle=1412,i,11431968620446289180,11003293425382803037,131072 /prefetch:8
                2⤵
                  PID:2116
                • 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=1624 --field-trial-handle=1412,i,11431968620446289180,11003293425382803037,131072 /prefetch:8
                  2⤵
                    PID:1408
                  • 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=2296 --field-trial-handle=1412,i,11431968620446289180,11003293425382803037,131072 /prefetch:1
                    2⤵
                      PID:1128
                    • 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=2328 --field-trial-handle=1412,i,11431968620446289180,11003293425382803037,131072 /prefetch:1
                      2⤵
                        PID:2408
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=3196 --field-trial-handle=1412,i,11431968620446289180,11003293425382803037,131072 /prefetch:2
                        2⤵
                          PID:2560
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1508 --field-trial-handle=1412,i,11431968620446289180,11003293425382803037,131072 /prefetch:1
                          2⤵
                            PID:2320
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --mojo-platform-channel-handle=3828 --field-trial-handle=1412,i,11431968620446289180,11003293425382803037,131072 /prefetch:1
                            2⤵
                              PID:2968
                            • 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=2272 --field-trial-handle=1412,i,11431968620446289180,11003293425382803037,131072 /prefetch:8
                              2⤵
                                PID:1740
                            • 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:1940

                              Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

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

                                Filesize

                                342B

                                MD5

                                7c1af2b44a20801170ed41f48d9263eb

                                SHA1

                                f2d89fae70540c0b6e421d7547eea588315ed7d2

                                SHA256

                                30c33f9a030316e5303311c13321fbba2653d5300d00fb5bbc147b9d18cb70e4

                                SHA512

                                22c01d816e5653a27ed10db78abd9a6adbd4d01e7382654781731f5e29d87791c927f27584fabcc15622075df0e8642b16e7e51c05fa430c302a355710beaa1d

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\8f9b9d5c-9f97-4fed-a0dc-92ae43ea4f96.tmp

                                Filesize

                                319KB

                                MD5

                                03c230ec0deb1f8362cc5b505d8aa40f

                                SHA1

                                c091146e74c55597271f544e79393099bb97529e

                                SHA256

                                f38a0fde396afd0e8774e0bda4a70cd20590cd064f54f1b46b8cf17f700e4eb4

                                SHA512

                                88871f83a58298624b5c26bcb9d19ec18a295c5555aa56be320787aa9fdc2ec27c1d2e889dce4d4205e02a61b9931249a2341847524f980b9e61caccf42b9e55

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

                                Filesize

                                264KB

                                MD5

                                f50f89a0a91564d0b8a211f8921aa7de

                                SHA1

                                112403a17dd69d5b9018b8cede023cb3b54eab7d

                                SHA256

                                b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                SHA512

                                bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

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

                                Filesize

                                363B

                                MD5

                                8a54f8a3f34c1775d643d1206b7374de

                                SHA1

                                2d8a1e0074bf055ecb992f06c391284ee1311182

                                SHA256

                                69b868d2ef11e2239c961ec39425319da3826e3e094d25b05f65045d387202c4

                                SHA512

                                7b991d21af1c713ee203246275f826c7e095bea26a1a13ca0d57e653787b805d90c53f85d763c0a9e7de23d9465ec8525606bf81d872651f80f02b0a5ec389ae

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

                                Filesize

                                5KB

                                MD5

                                5113ca8b60e9ffa821fb47c401f34b11

                                SHA1

                                9fa1c8e621fd91b9b1acc203ee6961e3430d0ba5

                                SHA256

                                31f1744557eb242cc21e7209655d57fc98c40d5cfe395b9c809a573950949f31

                                SHA512

                                a198a954c5a11bbebebb33fc71d36168d9ea47b089f0864e858919072ef1cc2e4af64d5cdd09730a433c3b6dd53553771e0dc083643b9c735ade45a111038792

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp

                                Filesize

                                16B

                                MD5

                                18e723571b00fb1694a3bad6c78e4054

                                SHA1

                                afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                                SHA256

                                8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                                SHA512

                                43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

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

                                Filesize

                                319KB

                                MD5

                                5c56ec9aacdfcf9676d6a39b84e6c9d0

                                SHA1

                                459387d8ba0acc9db779bb91d6fffc0eff771682

                                SHA256

                                7549ac77e0502f98a85868380917b16d878e793718961e028a177a74f77ac73f

                                SHA512

                                5a6d7248d0680c9e9e46aae1eebd351932216cfc0f75edab0cc3f3efb5f8878751052e736299771a87d872f6bf0714132631df65b672c6d9dc2c560dde45a75c

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

                                Filesize

                                319KB

                                MD5

                                27a4e09f2b620a55f82854a1a51e2f35

                                SHA1

                                18b5d8f313679d0ed57fec1bbc4aac0f20f450ec

                                SHA256

                                97ee82953d7f64bdad977ef64d46a12c1723e7c320cb0cd8a144173ee61ea6ce

                                SHA512

                                89922f00f3fb0d7929a3a467a63b15634cc7d8cf42ad5b136ffc75f21724d7645fc72d023babf18c197240dd80e719f8cc70d9031bc0aa72baa8eda49b1b5fc0

                              • C:\Users\Admin\AppData\Local\Temp\CabF855.tmp

                                Filesize

                                70KB

                                MD5

                                49aebf8cbd62d92ac215b2923fb1b9f5

                                SHA1

                                1723be06719828dda65ad804298d0431f6aff976

                                SHA256

                                b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

                                SHA512

                                bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

                              • C:\Users\Admin\AppData\Local\Temp\TarF868.tmp

                                Filesize

                                181KB

                                MD5

                                4ea6026cf93ec6338144661bf1202cd1

                                SHA1

                                a1dec9044f750ad887935a01430bf49322fbdcb7

                                SHA256

                                8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

                                SHA512

                                6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

                              • \??\pipe\crashpad_1460_DAOBPRWDLETICCIQ

                                MD5

                                d41d8cd98f00b204e9800998ecf8427e

                                SHA1

                                da39a3ee5e6b4b0d3255bfef95601890afd80709

                                SHA256

                                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                SHA512

                                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                              • memory/288-0-0x000007FEF6013000-0x000007FEF6014000-memory.dmp

                                Filesize

                                4KB

                              • memory/288-21-0x000007FEF6010000-0x000007FEF69FC000-memory.dmp

                                Filesize

                                9.9MB

                              • memory/288-20-0x000007FEF6010000-0x000007FEF69FC000-memory.dmp

                                Filesize

                                9.9MB

                              • memory/288-1-0x00000000000D0000-0x0000000000122000-memory.dmp

                                Filesize

                                328KB