Analysis

  • max time kernel
    2s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-12-2023 04:59

General

  • Target

    6bd2d0c64ce33ca5522c34a8927db8dd.exe

  • Size

    274KB

  • MD5

    6bd2d0c64ce33ca5522c34a8927db8dd

  • SHA1

    370a93b652c6d566c5921d727e298adf9640aa87

  • SHA256

    d17470457a84cb120cf0fde0c405ae82a954c39534368e2cb9c6798823c69fe3

  • SHA512

    3275e4de111ff3da91b5c53c1d4124bf536f436c763b072f574d19f8f43c88e95d614915ebb73876d68086b3bc4eddc60fabd1e5ca428f56e3e37d922b3ff3f4

  • SSDEEP

    6144:Mf+BLtABPD9NF/DVGK7zeNL+wN41V6GIeyXGRA1D0nmG:KNKK7zeNLXY69eyXL1DdG

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/882980614087794780/2EXTWMBoMH9DQog67zK2ten38diDtxtqRM8VZIXtVQBTQ1ytliHQMSQQ6ozPiihxhSIW

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • 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 2 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6bd2d0c64ce33ca5522c34a8927db8dd.exe
    "C:\Users\Admin\AppData\Local\Temp\6bd2d0c64ce33ca5522c34a8927db8dd.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4404

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\44\Process.txt

    Filesize

    1KB

    MD5

    b3264905f38044773241b55057fd03f6

    SHA1

    abba2a74d422500f9e92a2b712f8da71a703904a

    SHA256

    cb2522ef494e18138f4cf0e4b7ec3e91162bbe5a46a06cc22411269359edb713

    SHA512

    c6467fb11826aa704d53e8f7864bf06c98f282a523db3e4fa2a307b4e24fd5503da55a624b141d64aca3123e953ea486953c6c37a38bf08e3cc5ef9b116c3722

  • C:\Users\Admin\AppData\Roaming\44\Process.txt

    Filesize

    646B

    MD5

    33ba04d0d766bda9094961b559f9667d

    SHA1

    830a420aa5ec63f96b3c7ebf738471831e93a7eb

    SHA256

    238ac299b4f3cc50763a4827e1976eac3bd25c601364fbc2a6c9676318962b5a

    SHA512

    4ceb39b740bb42c8c7400193fce1599225bdad57a79ab31311e18cd12853531843315c64e4f5097174a327f43f1ff1238f13551a4a07291a82251f8a40a4dfdf

  • C:\Users\Admin\AppData\Roaming\44\Process.txt

    Filesize

    806B

    MD5

    e268066ba1d3d9d8d6376c7c5f8fe470

    SHA1

    eb238e85a23a604b3a08184971855eba52d69001

    SHA256

    ac326198ca79b1313dfc5d7cff36421f601397ac63aa5ea2e542c86bec2a6f3c

    SHA512

    2cf32a212d035d1c7d6efe905b1277e80f936677801caa55329cd56eb572d078b2c965aa193cecd31c78d12b33395356e9848b2329848fb17768aa364ffb478a

  • C:\Users\Admin\AppData\Roaming\44\Process.txt

    Filesize

    915B

    MD5

    3e978b69b1422bccb9bc7ef535ebb66e

    SHA1

    8c20dd2828ebe1c38f42b53561b9c22d155458f9

    SHA256

    2590ac6715155a8274d32059bd32e4270007a1a0a9b37075e6bf74a1183ff1c7

    SHA512

    e87c4579640d463ad90fd2fca86e829cb1e43c714da3cbf1c7a6e1059d29cead8dafa176cf93109bf44d24642afd3a099e68708378723691859e1979c6d0ddc7

  • memory/4404-0-0x0000000000BB0000-0x0000000000BFA000-memory.dmp

    Filesize

    296KB

  • memory/4404-32-0x000000001B850000-0x000000001B860000-memory.dmp

    Filesize

    64KB

  • memory/4404-29-0x00007FFB60B90000-0x00007FFB61651000-memory.dmp

    Filesize

    10.8MB

  • memory/4404-124-0x00007FFB60B90000-0x00007FFB61651000-memory.dmp

    Filesize

    10.8MB