Analysis

  • max time kernel
    122s
  • max time network
    74s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    22-07-2021 10:03

General

  • Target

    a4f4b5daa83bb6dc85ede588ffbfdb34.exe

  • Size

    212KB

  • MD5

    a4f4b5daa83bb6dc85ede588ffbfdb34

  • SHA1

    9bbaac140fa643d30bf25af71561f5ee35874898

  • SHA256

    f61201b7b85a410a62c1f1946095b3feabb6e672fb8ddc0c64789a02ae9a06f4

  • SHA512

    b4f436bd64384d767109d04eea6f3f5ad192c4f1e71cc31a88ba4ac78ef97da3ef1aaade388dfc9240c38e386993e9dc21803554db8513f0ed7ebe00ee248624

Malware Config

Signatures

  • RedLine

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

  • RedLine Payload 1 IoCs
  • 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.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a4f4b5daa83bb6dc85ede588ffbfdb34.exe
    "C:\Users\Admin\AppData\Local\Temp\a4f4b5daa83bb6dc85ede588ffbfdb34.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:336
    • C:\Users\Admin\AppData\Roaming\7695522.exe
      "C:\Users\Admin\AppData\Roaming\7695522.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1580
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 1580 -s 1936
        3⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:1104
    • C:\Users\Admin\AppData\Roaming\3237188.exe
      "C:\Users\Admin\AppData\Roaming\3237188.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:632

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\3237188.exe

    MD5

    52be91bb8576b57551f38cf98bd984cc

    SHA1

    d4b25085ae85e7b4edc2db2f77e4108fd7345fc1

    SHA256

    2eff8b37b39a5384bf9a3732bd7395af3430bd36eafdad4ba5cec6f707cdd680

    SHA512

    f648be8d881ba47b87544327843add140cc4142ab7fac89cd87d3c79bed23524d7b40e35fd0c65a8c50a62c4e4f32d9a1681b3e043ea882bbfc46425891011b1

  • C:\Users\Admin\AppData\Roaming\3237188.exe

    MD5

    52be91bb8576b57551f38cf98bd984cc

    SHA1

    d4b25085ae85e7b4edc2db2f77e4108fd7345fc1

    SHA256

    2eff8b37b39a5384bf9a3732bd7395af3430bd36eafdad4ba5cec6f707cdd680

    SHA512

    f648be8d881ba47b87544327843add140cc4142ab7fac89cd87d3c79bed23524d7b40e35fd0c65a8c50a62c4e4f32d9a1681b3e043ea882bbfc46425891011b1

  • C:\Users\Admin\AppData\Roaming\7695522.exe

    MD5

    a37b1548c0985ae8a2763cf6d1b39c80

    SHA1

    02fc37e10be4d933c05ee52d5363bee65fb914a6

    SHA256

    8c31f3d89d2123272c1167ad1e929aa685d4065a5f334f651d4c09c0e291e986

    SHA512

    89f7b6b7a8f6136854bd217ac6d9170575621a66bf42f51105354ab2419ed4a4df041e94eab64ec171b2c5bbb5dbe13f5f52cb137c38c6c1758508a3fc347bb9

  • C:\Users\Admin\AppData\Roaming\7695522.exe

    MD5

    a37b1548c0985ae8a2763cf6d1b39c80

    SHA1

    02fc37e10be4d933c05ee52d5363bee65fb914a6

    SHA256

    8c31f3d89d2123272c1167ad1e929aa685d4065a5f334f651d4c09c0e291e986

    SHA512

    89f7b6b7a8f6136854bd217ac6d9170575621a66bf42f51105354ab2419ed4a4df041e94eab64ec171b2c5bbb5dbe13f5f52cb137c38c6c1758508a3fc347bb9

  • memory/336-64-0x000000001B060000-0x000000001B062000-memory.dmp

    Filesize

    8KB

  • memory/336-0-0x0000000000C00000-0x0000000000C01000-memory.dmp

    Filesize

    4KB

  • memory/336-63-0x0000000000300000-0x0000000000301000-memory.dmp

    Filesize

    4KB

  • memory/336-62-0x0000000000250000-0x0000000000273000-memory.dmp

    Filesize

    140KB

  • memory/336-2-0x0000000000240000-0x0000000000241000-memory.dmp

    Filesize

    4KB

  • memory/632-77-0x00000000003E0000-0x00000000003E1000-memory.dmp

    Filesize

    4KB

  • memory/632-71-0x0000000000000000-mapping.dmp

  • memory/632-80-0x0000000004A50000-0x0000000004A51000-memory.dmp

    Filesize

    4KB

  • memory/632-79-0x0000000000370000-0x00000000003A2000-memory.dmp

    Filesize

    200KB

  • memory/1104-83-0x0000000000210000-0x0000000000211000-memory.dmp

    Filesize

    4KB

  • memory/1104-82-0x000007FEFC251000-0x000007FEFC253000-memory.dmp

    Filesize

    8KB

  • memory/1104-81-0x0000000000000000-mapping.dmp

  • memory/1580-65-0x0000000000000000-mapping.dmp

  • memory/1580-76-0x000000001AE00000-0x000000001AE02000-memory.dmp

    Filesize

    8KB

  • memory/1580-75-0x00000000004A0000-0x00000000004A1000-memory.dmp

    Filesize

    4KB

  • memory/1580-74-0x00000000003D0000-0x0000000000420000-memory.dmp

    Filesize

    320KB

  • memory/1580-70-0x0000000000240000-0x0000000000241000-memory.dmp

    Filesize

    4KB

  • memory/1580-68-0x0000000000AC0000-0x0000000000AC1000-memory.dmp

    Filesize

    4KB