Analysis

  • max time kernel
    45s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    11-07-2022 02:56

General

  • Target

    131a32033cf88976a8df48361b90207d.exe

  • Size

    586KB

  • MD5

    131a32033cf88976a8df48361b90207d

  • SHA1

    ce260393460fa5d4cbfa17d3329fd33594810add

  • SHA256

    d75d7b0534ff648f16f5751be79a2c23158b6412a780180aec78c77c7e95071d

  • SHA512

    120a4ef120c7b2d4c07af7e6418eaf83d7f3d41ba13f41ce2e494f76182c4b07fd16ec2ceaf1937ba3e76ecb9149cc42edba315e818dad09882cf77a62f6c708

Malware Config

Extracted

Family

arkei

Botnet

Default

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • Raccoon

    Raccoon is an infostealer written in C++ and first seen in 2019.

  • suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4

    suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4

  • suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil

    suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\131a32033cf88976a8df48361b90207d.exe
    "C:\Users\Admin\AppData\Local\Temp\131a32033cf88976a8df48361b90207d.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1452
    • C:\Users\Admin\AppData\Local\Temp\Mccegjkqnoydj.exe
      "C:\Users\Admin\AppData\Local\Temp\Mccegjkqnoydj.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1036
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        3⤵
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious use of WriteProcessMemory
        PID:316
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe" & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1944
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 5
            5⤵
            • Delays execution with timeout.exe
            PID:1244
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      2⤵
      • Loads dropped DLL
      PID:744
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 744 -s 772
        3⤵
        • Program crash
        PID:776

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Mccegjkqnoydj.exe
    Filesize

    341KB

    MD5

    e96634c20057c1643a303d6266321035

    SHA1

    5f074a2f48911fa04995ab2bad95f6e66f228ebe

    SHA256

    58ca86e49e4dea36ec81072c6e63fb8d6b465447d3c1fc1443d15e897c13d27c

    SHA512

    0d927b650ef8029636681a4ba16637bda30336756586038818c0b75c2fddba0d83b6e4a51ece8a8c05a4deb13dc93e5bd23ae36024349a901c27909144725ebb

  • C:\Users\Admin\AppData\Local\Temp\Mccegjkqnoydj.exe
    Filesize

    341KB

    MD5

    e96634c20057c1643a303d6266321035

    SHA1

    5f074a2f48911fa04995ab2bad95f6e66f228ebe

    SHA256

    58ca86e49e4dea36ec81072c6e63fb8d6b465447d3c1fc1443d15e897c13d27c

    SHA512

    0d927b650ef8029636681a4ba16637bda30336756586038818c0b75c2fddba0d83b6e4a51ece8a8c05a4deb13dc93e5bd23ae36024349a901c27909144725ebb

  • \ProgramData\mozglue.dll
    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll
    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • \Users\Admin\AppData\LocalLow\mozglue.dll
    Filesize

    612KB

    MD5

    f07d9977430e762b563eaadc2b94bbfa

    SHA1

    da0a05b2b8d269fb73558dfcf0ed5c167f6d3877

    SHA256

    4191faf7e5eb105a0f4c5c6ed3e9e9c71014e8aa39bbee313bc92d1411e9e862

    SHA512

    6afd512e4099643bba3fc7700dd72744156b78b7bda10263ba1f8571d1e282133a433215a9222a7799f9824f244a2bc80c2816a62de1497017a4b26d562b7eaf

  • \Users\Admin\AppData\LocalLow\nss3.dll
    Filesize

    1.9MB

    MD5

    f67d08e8c02574cbc2f1122c53bfb976

    SHA1

    6522992957e7e4d074947cad63189f308a80fcf2

    SHA256

    c65b7afb05ee2b2687e6280594019068c3d3829182dfe8604ce4adf2116cc46e

    SHA512

    2e9d0a211d2b085514f181852fae6e7ca6aed4d29f396348bedb59c556e39621810a9a74671566a49e126ec73a60d0f781fa9085eb407df1eefd942c18853be5

  • \Users\Admin\AppData\LocalLow\sqlite3.dll
    Filesize

    1.0MB

    MD5

    dbf4f8dcefb8056dc6bae4b67ff810ce

    SHA1

    bbac1dd8a07c6069415c04b62747d794736d0689

    SHA256

    47b64311719000fa8c432165a0fdcdfed735d5b54977b052de915b1cbbbf9d68

    SHA512

    b572ca2f2e4a5cc93e4fcc7a18c0ae6df888aa4c55bc7da591e316927a4b5cfcbdda6e60018950be891ff3b26f470cc5cce34d217c2d35074322ab84c32a25d1

  • \Users\Admin\AppData\Local\Temp\Mccegjkqnoydj.exe
    Filesize

    341KB

    MD5

    e96634c20057c1643a303d6266321035

    SHA1

    5f074a2f48911fa04995ab2bad95f6e66f228ebe

    SHA256

    58ca86e49e4dea36ec81072c6e63fb8d6b465447d3c1fc1443d15e897c13d27c

    SHA512

    0d927b650ef8029636681a4ba16637bda30336756586038818c0b75c2fddba0d83b6e4a51ece8a8c05a4deb13dc93e5bd23ae36024349a901c27909144725ebb

  • memory/316-81-0x0000000000400000-0x000000000043D000-memory.dmp
    Filesize

    244KB

  • memory/316-83-0x0000000000400000-0x000000000043D000-memory.dmp
    Filesize

    244KB

  • memory/316-120-0x0000000000400000-0x000000000043D000-memory.dmp
    Filesize

    244KB

  • memory/316-97-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB

  • memory/316-67-0x0000000000400000-0x000000000043D000-memory.dmp
    Filesize

    244KB

  • memory/316-69-0x0000000000400000-0x000000000043D000-memory.dmp
    Filesize

    244KB

  • memory/316-92-0x0000000000400000-0x000000000043D000-memory.dmp
    Filesize

    244KB

  • memory/316-73-0x0000000000400000-0x000000000043D000-memory.dmp
    Filesize

    244KB

  • memory/316-77-0x0000000000400000-0x000000000043D000-memory.dmp
    Filesize

    244KB

  • memory/316-79-0x0000000000400000-0x000000000043D000-memory.dmp
    Filesize

    244KB

  • memory/316-89-0x0000000000400000-0x000000000043D000-memory.dmp
    Filesize

    244KB

  • memory/316-85-0x000000000043C0B2-mapping.dmp
  • memory/744-84-0x0000000000406BEA-mapping.dmp
  • memory/744-116-0x0000000000400000-0x0000000000411000-memory.dmp
    Filesize

    68KB

  • memory/744-74-0x0000000000400000-0x0000000000411000-memory.dmp
    Filesize

    68KB

  • memory/744-122-0x0000000000400000-0x0000000000411000-memory.dmp
    Filesize

    68KB

  • memory/744-82-0x0000000000400000-0x0000000000411000-memory.dmp
    Filesize

    68KB

  • memory/744-88-0x0000000000400000-0x0000000000411000-memory.dmp
    Filesize

    68KB

  • memory/744-76-0x0000000000400000-0x0000000000411000-memory.dmp
    Filesize

    68KB

  • memory/744-91-0x0000000000400000-0x0000000000411000-memory.dmp
    Filesize

    68KB

  • memory/744-70-0x0000000000400000-0x0000000000411000-memory.dmp
    Filesize

    68KB

  • memory/744-65-0x0000000000400000-0x0000000000411000-memory.dmp
    Filesize

    68KB

  • memory/744-66-0x0000000000400000-0x0000000000411000-memory.dmp
    Filesize

    68KB

  • memory/1036-59-0x0000000000000000-mapping.dmp
  • memory/1036-62-0x0000000001180000-0x00000000011DC000-memory.dmp
    Filesize

    368KB

  • memory/1036-64-0x0000000004710000-0x0000000004776000-memory.dmp
    Filesize

    408KB

  • memory/1244-121-0x0000000000000000-mapping.dmp
  • memory/1452-57-0x0000000000580000-0x00000000005CC000-memory.dmp
    Filesize

    304KB

  • memory/1452-54-0x0000000000FA0000-0x0000000001038000-memory.dmp
    Filesize

    608KB

  • memory/1452-56-0x0000000004B10000-0x0000000004BB4000-memory.dmp
    Filesize

    656KB

  • memory/1452-55-0x0000000075EF1000-0x0000000075EF3000-memory.dmp
    Filesize

    8KB

  • memory/1944-119-0x0000000000000000-mapping.dmp