Analysis

  • max time kernel
    28s
  • max time network
    27s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    15-02-2021 07:10

General

  • Target

    075917b90acfcbedbd9b5a96c25fccfc.exe

  • Size

    512KB

  • MD5

    075917b90acfcbedbd9b5a96c25fccfc

  • SHA1

    5528b58600c878c476697756fbc2055b660f3b48

  • SHA256

    435893fea822f63cc3bd3f725acd416dff2d1bd8838bf80318d195864a44de09

  • SHA512

    02a68401c35ee6ec848573b399a710003db754514dfde20e762645e265c3836c5888f2ccd4114f6f4e75639604c67101cfa69d1ff58758fac93bddc3aed8f0b2

Malware Config

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\075917b90acfcbedbd9b5a96c25fccfc.exe
    "C:\Users\Admin\AppData\Local\Temp\075917b90acfcbedbd9b5a96c25fccfc.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1856
    • C:\Users\Admin\AppData\Roaming\paperships\noabu.exe
      noabu.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1504

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\paperships\noabu.exe

    MD5

    e9f2ded2b4be33b68f4d84e93df358bd

    SHA1

    a8f8dce913a1ea9c34d6325b9cc855a6d94e4d10

    SHA256

    e99ab798099b3c352427b7808b0a2c7e73854aaeb34001f17852e288af321f6c

    SHA512

    6b228430c543064062a40fd89a7cff6864394a49dc62d37ab5e67a2d8f44d4253377be695b786e60e771b7fb5c19fb867a7c942b664a8effbd985ef01652ddf8

  • \Users\Admin\AppData\Roaming\paperships\noabu.exe

    MD5

    e9f2ded2b4be33b68f4d84e93df358bd

    SHA1

    a8f8dce913a1ea9c34d6325b9cc855a6d94e4d10

    SHA256

    e99ab798099b3c352427b7808b0a2c7e73854aaeb34001f17852e288af321f6c

    SHA512

    6b228430c543064062a40fd89a7cff6864394a49dc62d37ab5e67a2d8f44d4253377be695b786e60e771b7fb5c19fb867a7c942b664a8effbd985ef01652ddf8

  • memory/308-6-0x000007FEF67C0000-0x000007FEF6A3A000-memory.dmp

    Filesize

    2.5MB

  • memory/1504-10-0x0000000002C30000-0x0000000002C41000-memory.dmp

    Filesize

    68KB

  • memory/1504-15-0x0000000004790000-0x00000000047BC000-memory.dmp

    Filesize

    176KB

  • memory/1504-20-0x0000000006EA4000-0x0000000006EA6000-memory.dmp

    Filesize

    8KB

  • memory/1504-8-0x0000000000000000-mapping.dmp

  • memory/1504-19-0x0000000006EE0000-0x0000000006F0A000-memory.dmp

    Filesize

    168KB

  • memory/1504-18-0x0000000006EA3000-0x0000000006EA4000-memory.dmp

    Filesize

    4KB

  • memory/1504-11-0x0000000004640000-0x0000000004651000-memory.dmp

    Filesize

    68KB

  • memory/1504-12-0x00000000003A0000-0x00000000003D6000-memory.dmp

    Filesize

    216KB

  • memory/1504-13-0x0000000000400000-0x0000000000439000-memory.dmp

    Filesize

    228KB

  • memory/1504-14-0x0000000074410000-0x0000000074AFE000-memory.dmp

    Filesize

    6.9MB

  • memory/1504-17-0x0000000006EA2000-0x0000000006EA3000-memory.dmp

    Filesize

    4KB

  • memory/1504-16-0x0000000006EA1000-0x0000000006EA2000-memory.dmp

    Filesize

    4KB

  • memory/1856-5-0x0000000000400000-0x00000000004D5000-memory.dmp

    Filesize

    852KB

  • memory/1856-2-0x0000000002EB0000-0x0000000002EC1000-memory.dmp

    Filesize

    68KB

  • memory/1856-3-0x00000000767E1000-0x00000000767E3000-memory.dmp

    Filesize

    8KB

  • memory/1856-4-0x0000000002C00000-0x0000000002CCF000-memory.dmp

    Filesize

    828KB