Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-01-2023 18:19

General

  • Target

    file.exe

  • Size

    211KB

  • MD5

    02f3b25318b1cc3c6a24ad7a1738eede

  • SHA1

    43182925664314e2fea57cc3daf719568385e6e0

  • SHA256

    987fed2dae35dedc1c52230b9938c2a351164d84e8874c8314957812ad641bdb

  • SHA512

    356f503151db78a98a2d309b1636693d71e814b3bd4c9ba3b4e6d8955ab6afede0e39c2517e9da03cd2047bdab046a4fdb5b49548f36a160030953e97f20e94c

  • SSDEEP

    3072:CXjrZwbg56Ks5RIZEyS5VDnrqKxyeqLzy5mi:C6yZHSDnuKcn

Malware Config

Extracted

Family

lumma

C2

77.73.134.68

Signatures

  • Detects Smokeloader packer 1 IoCs
  • Lumma Stealer

    An infostealer written in C++ first seen in August 2022.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4612
  • C:\Users\Admin\AppData\Roaming\ucvrieb
    C:\Users\Admin\AppData\Roaming\ucvrieb
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:4768
  • C:\Users\Admin\AppData\Local\Temp\BACF.exe
    C:\Users\Admin\AppData\Local\Temp\BACF.exe
    1⤵
    • Executes dropped EXE
    PID:2832

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\BACF.exe

    Filesize

    248KB

    MD5

    8fb1199711c3b6afd7aa7b8595929e7f

    SHA1

    ff8f1814fff095fa7cfd6c2bb07a1595b83c89c0

    SHA256

    f30ab3c5c9a72ef605d9e171dc9d22e39d1f1114c36d87c24a16b8ccb4a5f749

    SHA512

    dbd8765a9fcebee920335e41da43fc1b025460e3c1293a803be4f440a3cd6c0823f1f3bcd618a49ac8c7d07c29876ec8e2023e11c491f32faf16401a60821926

  • C:\Users\Admin\AppData\Local\Temp\BACF.exe

    Filesize

    248KB

    MD5

    8fb1199711c3b6afd7aa7b8595929e7f

    SHA1

    ff8f1814fff095fa7cfd6c2bb07a1595b83c89c0

    SHA256

    f30ab3c5c9a72ef605d9e171dc9d22e39d1f1114c36d87c24a16b8ccb4a5f749

    SHA512

    dbd8765a9fcebee920335e41da43fc1b025460e3c1293a803be4f440a3cd6c0823f1f3bcd618a49ac8c7d07c29876ec8e2023e11c491f32faf16401a60821926

  • C:\Users\Admin\AppData\Roaming\ucvrieb

    Filesize

    211KB

    MD5

    02f3b25318b1cc3c6a24ad7a1738eede

    SHA1

    43182925664314e2fea57cc3daf719568385e6e0

    SHA256

    987fed2dae35dedc1c52230b9938c2a351164d84e8874c8314957812ad641bdb

    SHA512

    356f503151db78a98a2d309b1636693d71e814b3bd4c9ba3b4e6d8955ab6afede0e39c2517e9da03cd2047bdab046a4fdb5b49548f36a160030953e97f20e94c

  • C:\Users\Admin\AppData\Roaming\ucvrieb

    Filesize

    211KB

    MD5

    02f3b25318b1cc3c6a24ad7a1738eede

    SHA1

    43182925664314e2fea57cc3daf719568385e6e0

    SHA256

    987fed2dae35dedc1c52230b9938c2a351164d84e8874c8314957812ad641bdb

    SHA512

    356f503151db78a98a2d309b1636693d71e814b3bd4c9ba3b4e6d8955ab6afede0e39c2517e9da03cd2047bdab046a4fdb5b49548f36a160030953e97f20e94c

  • memory/2832-141-0x0000000000000000-mapping.dmp

  • memory/2832-146-0x0000000000400000-0x0000000002BA6000-memory.dmp

    Filesize

    39.6MB

  • memory/2832-145-0x0000000002E00000-0x0000000002E2A000-memory.dmp

    Filesize

    168KB

  • memory/2832-144-0x0000000002F39000-0x0000000002F53000-memory.dmp

    Filesize

    104KB

  • memory/4612-135-0x0000000000400000-0x0000000002B9D000-memory.dmp

    Filesize

    39.6MB

  • memory/4612-132-0x0000000002C79000-0x0000000002C89000-memory.dmp

    Filesize

    64KB

  • memory/4612-134-0x0000000000400000-0x0000000002B9D000-memory.dmp

    Filesize

    39.6MB

  • memory/4612-133-0x0000000002C30000-0x0000000002C39000-memory.dmp

    Filesize

    36KB

  • memory/4768-140-0x0000000000400000-0x0000000002B9D000-memory.dmp

    Filesize

    39.6MB

  • memory/4768-139-0x0000000000400000-0x0000000002B9D000-memory.dmp

    Filesize

    39.6MB

  • memory/4768-138-0x0000000002D98000-0x0000000002DA9000-memory.dmp

    Filesize

    68KB