Analysis

  • max time kernel
    146s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    27-06-2024 20:54

General

  • Target

    3f8c834a6f95f5128aa4c916bbb51afcfe7d1c6e79e93b9c750862fbacf8d657.exe

  • Size

    3.4MB

  • MD5

    5c48167b9b7f4ca64ec8ffc3dac52f4f

  • SHA1

    798c3b6432e0a6c7ca3565847f2ae6132ce273e2

  • SHA256

    3f8c834a6f95f5128aa4c916bbb51afcfe7d1c6e79e93b9c750862fbacf8d657

  • SHA512

    41d9dfe7e15f372e271b87bb1c28a16af7259d5dd76fe9e1d936de8ef34200504afb4a505d6c96722fc2c29c6a032fa81f094ae1969d13f4f55bdcf8ed2faace

  • SSDEEP

    98304:U3GZi+althnATSq/Mr0E6QpT3WF/zYpDLGf8xV3XVV4l94e/YjW:U3G0+althATSCil3acME/6L/T

Score
10/10

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1250616070168121415/5zPJF3YAMfzIYMNhBy0XbjWdMsVRmd5PNYzbuTK55XQkKeKyHmQ5hnEfKgffl6GKC84q

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs
  • Detects executables Discord URL observed in first stage droppers 2 IoCs
  • Detects executables packed with ConfuserEx Mod 2 IoCs
  • Detects executables referencing Discord tokens regular expressions 2 IoCs
  • Detects executables referencing credit card regular expressions 2 IoCs
  • Detects executables referencing many VPN software clients. Observed in infosteslers 2 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3f8c834a6f95f5128aa4c916bbb51afcfe7d1c6e79e93b9c750862fbacf8d657.exe
    "C:\Users\Admin\AppData\Local\Temp\3f8c834a6f95f5128aa4c916bbb51afcfe7d1c6e79e93b9c750862fbacf8d657.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2112
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Loader.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Loader.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2668

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Cab192E.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Loader.exe

    Filesize

    1.8MB

    MD5

    bb9840f7382dd86e6b528da7eca4282e

    SHA1

    312520506e7444ca7952fca5473b61ca18ea3a94

    SHA256

    38c69a36a8add6d7f523719ec0909867e0a4f2df0041c0f654cdb49c6b716e3b

    SHA512

    8018b864da28b383e127d209c458281eca62ddb6c74a97f9c225938f21f87a2833c9fc828123c8014b9b7b5b576fc7c9e827f1d873e511722876ee559e6ee1e7

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Newtonsoft.Json.dll

    Filesize

    695KB

    MD5

    195ffb7167db3219b217c4fd439eedd6

    SHA1

    1e76e6099570ede620b76ed47cf8d03a936d49f8

    SHA256

    e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d

    SHA512

    56eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Siticone.Desktop.UI.dll

    Filesize

    4.0MB

    MD5

    1582aa45d981e0e569c6e05698642b30

    SHA1

    763506f312a186c55a04ef6a16ad7e867c394097

    SHA256

    21eecaf504b7fe787a45f4aa8f8f36dacfc3ab1d75624dfb41827cdef2a9a589

    SHA512

    278a7a4e2b9d82528200b9f92244db3f228187d15c36fd169deb927e343bc4d0bb29c9dba496f86558aea4f4deb44d1e47a41d5598c0b375d99ad9fbe99cec34

  • C:\Users\Admin\AppData\Local\Temp\Tar1A0F.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/2668-27-0x0000000004A80000-0x0000000004E86000-memory.dmp

    Filesize

    4.0MB

  • memory/2668-30-0x0000000074840000-0x0000000074F2E000-memory.dmp

    Filesize

    6.9MB

  • memory/2668-31-0x0000000074840000-0x0000000074F2E000-memory.dmp

    Filesize

    6.9MB

  • memory/2668-29-0x0000000074840000-0x0000000074F2E000-memory.dmp

    Filesize

    6.9MB

  • memory/2668-28-0x0000000074840000-0x0000000074F2E000-memory.dmp

    Filesize

    6.9MB

  • memory/2668-23-0x0000000000F80000-0x000000000115C000-memory.dmp

    Filesize

    1.9MB

  • memory/2668-22-0x000000007484E000-0x000000007484F000-memory.dmp

    Filesize

    4KB

  • memory/2668-112-0x0000000008F10000-0x0000000008FC2000-memory.dmp

    Filesize

    712KB

  • memory/2668-116-0x000000007484E000-0x000000007484F000-memory.dmp

    Filesize

    4KB

  • memory/2668-117-0x0000000074840000-0x0000000074F2E000-memory.dmp

    Filesize

    6.9MB

  • memory/2668-118-0x0000000074840000-0x0000000074F2E000-memory.dmp

    Filesize

    6.9MB

  • memory/2668-119-0x0000000074840000-0x0000000074F2E000-memory.dmp

    Filesize

    6.9MB