Analysis

  • max time kernel
    19s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    12-02-2021 19:17

General

  • Target

    e0b201e817b42e1efcc57aae3a3d4b94.exe

  • Size

    654KB

  • MD5

    e0b201e817b42e1efcc57aae3a3d4b94

  • SHA1

    49946500104cd9ae82cd2f54563c75d23f6304c5

  • SHA256

    6f3f902d2c797c2a9eef8bea492ec2e5c2cccdf3b9e93c7d2d56c4094f02daec

  • SHA512

    42666e63468e19842bda39e3f2af0b6b512e272907704f2ee32401a395e78527630089f239343a12fbbb1447583bd4cbbb5cbce7b4b191c479a6aa4d44dbb271

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\e0b201e817b42e1efcc57aae3a3d4b94.exe
    "C:\Users\Admin\AppData\Local\Temp\e0b201e817b42e1efcc57aae3a3d4b94.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1012
    • 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:268

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    b193f6ad44a0e3a55782e365ad1b0082

    SHA1

    a3187be12fe673b70640096db4a62a52923a5dbb

    SHA256

    1ad35ecffd662312ffa048ae8b85344267ebdd6d5c3be375c99b84c57d3ef117

    SHA512

    59722aafb85543225a17743cefaec55128813569cf898554ce8b9ef818a3eba564248184e656db4d7333a5923e6c5bed56da6eb6626ecc31a9d66dbb0b2a4820

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

    MD5

    b193f6ad44a0e3a55782e365ad1b0082

    SHA1

    a3187be12fe673b70640096db4a62a52923a5dbb

    SHA256

    1ad35ecffd662312ffa048ae8b85344267ebdd6d5c3be375c99b84c57d3ef117

    SHA512

    59722aafb85543225a17743cefaec55128813569cf898554ce8b9ef818a3eba564248184e656db4d7333a5923e6c5bed56da6eb6626ecc31a9d66dbb0b2a4820

  • memory/268-15-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/268-17-0x00000000048E2000-0x00000000048E3000-memory.dmp

    Filesize

    4KB

  • memory/268-20-0x00000000048E4000-0x00000000048E6000-memory.dmp

    Filesize

    8KB

  • memory/268-19-0x00000000048E3000-0x00000000048E4000-memory.dmp

    Filesize

    4KB

  • memory/268-8-0x0000000000000000-mapping.dmp

  • memory/268-18-0x0000000001ED0000-0x0000000001EFC000-memory.dmp

    Filesize

    176KB

  • memory/268-10-0x0000000001DF0000-0x0000000001E01000-memory.dmp

    Filesize

    68KB

  • memory/268-11-0x0000000001F40000-0x0000000001F51000-memory.dmp

    Filesize

    68KB

  • memory/268-12-0x0000000074590000-0x0000000074C7E000-memory.dmp

    Filesize

    6.9MB

  • memory/268-13-0x0000000000560000-0x000000000058E000-memory.dmp

    Filesize

    184KB

  • memory/268-14-0x0000000000230000-0x0000000000267000-memory.dmp

    Filesize

    220KB

  • memory/268-16-0x00000000048E1000-0x00000000048E2000-memory.dmp

    Filesize

    4KB

  • memory/904-6-0x000007FEF7D90000-0x000007FEF800A000-memory.dmp

    Filesize

    2.5MB

  • memory/1012-2-0x0000000001D30000-0x0000000001D41000-memory.dmp

    Filesize

    68KB

  • memory/1012-5-0x0000000000400000-0x00000000004D5000-memory.dmp

    Filesize

    852KB

  • memory/1012-3-0x00000000761E1000-0x00000000761E3000-memory.dmp

    Filesize

    8KB

  • memory/1012-4-0x00000000002A0000-0x000000000036F000-memory.dmp

    Filesize

    828KB