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Analysis

  • max time kernel
    155s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    21/03/2023, 14:46

General

  • Target

    15539a353d5b7e18b87b30f717454dc25c4261954d97af791596ea49acb1fa92.exe

  • Size

    291KB

  • MD5

    8cca6d631010620a368ddc7925c0649c

  • SHA1

    cbac7cdb0b393a64a25726c09c718616e83ffa8f

  • SHA256

    15539a353d5b7e18b87b30f717454dc25c4261954d97af791596ea49acb1fa92

  • SHA512

    4c38a618668d2fe78ee950aaadd4f32d7f4ff3130039efefb1e039bc79aeedb2e065141fdd96d4255735ffb68a991b83e0d4609e02a76a958c99feda4f24135c

  • SSDEEP

    3072:2D2H6X9LmnZiTw5aX/ifwSYt3pkki/c9yEh+vp5nbrSLJhCe:MX9LmnMTlX/iYSYPkR/cWvzvohC

Malware Config

Extracted

Family

stealc

C2

http://45.87.154.30

Extracted

Family

laplas

C2

http://45.87.154.105

Attributes
  • api_key

    1c630872d348a77d04368d542fde4663bc2bcb96f1b909554db3472c08df2767

Signatures

  • Detects Stealc stealer 1 IoCs
  • Laplas Clipper

    Laplas is a crypto wallet stealer with three variants written in Golang, C#, and C++.

  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 6 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\15539a353d5b7e18b87b30f717454dc25c4261954d97af791596ea49acb1fa92.exe
    "C:\Users\Admin\AppData\Local\Temp\15539a353d5b7e18b87b30f717454dc25c4261954d97af791596ea49acb1fa92.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1532
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\AFIDGDBGCA.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:848
      • C:\Users\Admin\AppData\Local\Temp\AFIDGDBGCA.exe
        "C:\Users\Admin\AppData\Local\Temp\AFIDGDBGCA.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:1720
        • C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
          C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
          4⤵
          • Executes dropped EXE
          PID:1548
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\15539a353d5b7e18b87b30f717454dc25c4261954d97af791596ea49acb1fa92.exe" & del "C:\ProgramData\*.dll"" & exit
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1644
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        3⤵
        • Delays execution with timeout.exe
        PID:1428

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    1.9MB

    MD5

    9e02c05696e63e53f6f7a8fc7bf9e5ca

    SHA1

    83d17724e64973eb938926e8ccce0fa4911fafb8

    SHA256

    727ab7ab3fbcea9b9ace8552393f06ca837c9b1905772de1be3a263149f55210

    SHA512

    767596c377a656b326bf922cb2fdb96d675590b4974c654fc5b501924b035638d07124224fcdba00a4f7671917918abb216a4d8c5e2bc566a1578c21bc694bb0

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

    Filesize

    1.9MB

    MD5

    9e02c05696e63e53f6f7a8fc7bf9e5ca

    SHA1

    83d17724e64973eb938926e8ccce0fa4911fafb8

    SHA256

    727ab7ab3fbcea9b9ace8552393f06ca837c9b1905772de1be3a263149f55210

    SHA512

    767596c377a656b326bf922cb2fdb96d675590b4974c654fc5b501924b035638d07124224fcdba00a4f7671917918abb216a4d8c5e2bc566a1578c21bc694bb0

  • C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe

    Filesize

    80.5MB

    MD5

    b90cf0aec9dd6f7bac1434a22de80dbe

    SHA1

    e23a6504cfbbf731a69704a53d8e6ed2e687ae59

    SHA256

    13c674e6544150579205812c811fda3af318998a41d57105b4ef97239cee9fe2

    SHA512

    9db34d5b7939f26e3f9f6788d4beb7a2513708b53af8a6d7ee64a6cceb71f42d855c0c596ad9a294f31ea15b0647597bd457ef76a40d0c20aa23f55ac3478e92

  • C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe

    Filesize

    78.6MB

    MD5

    b30f2e908939be8f175baac1d4fc9c2c

    SHA1

    86e17cca9ca915279db0257a460c7d0279fa3290

    SHA256

    dd373c8087a2f6ec56b58ba92af2164ebd94057880aa4bc1690861166f63a6cf

    SHA512

    cc4cf3d9ced52112d8e4e389b55541eb3425e5d7fa54c6fd59d64e445f408e7aed86944258475e2f94db159a2557d59581b41ea3465f2ba89fd2defff1586053

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • \Users\Admin\AppData\Local\Temp\AFIDGDBGCA.exe

    Filesize

    1.9MB

    MD5

    9e02c05696e63e53f6f7a8fc7bf9e5ca

    SHA1

    83d17724e64973eb938926e8ccce0fa4911fafb8

    SHA256

    727ab7ab3fbcea9b9ace8552393f06ca837c9b1905772de1be3a263149f55210

    SHA512

    767596c377a656b326bf922cb2fdb96d675590b4974c654fc5b501924b035638d07124224fcdba00a4f7671917918abb216a4d8c5e2bc566a1578c21bc694bb0

  • \Users\Admin\AppData\Local\Temp\AFIDGDBGCA.exe

    Filesize

    1.9MB

    MD5

    9e02c05696e63e53f6f7a8fc7bf9e5ca

    SHA1

    83d17724e64973eb938926e8ccce0fa4911fafb8

    SHA256

    727ab7ab3fbcea9b9ace8552393f06ca837c9b1905772de1be3a263149f55210

    SHA512

    767596c377a656b326bf922cb2fdb96d675590b4974c654fc5b501924b035638d07124224fcdba00a4f7671917918abb216a4d8c5e2bc566a1578c21bc694bb0

  • \Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe

    Filesize

    82.9MB

    MD5

    75f5de471c4215daac8cf53df7f4b64e

    SHA1

    97ec9feb9908b4e8f988a17776fa8d8c47984911

    SHA256

    36de1c04f083d67021e574c1c996ea4e63d4b1ecbd3bae4cfd14dea7b0040ebc

    SHA512

    19f2933b0b6e447d066880c3804b60abc7fde1cc5a4ef815c9f6cb439c53f6cb11bd747668962bb537e9c37530002fd77eac7d07098d0640b45822b056f69ec0

  • \Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe

    Filesize

    82.2MB

    MD5

    eb8b86a83e23166b808715954480eae1

    SHA1

    05b772624ddac4f35fa52ec1d5bca50a3a6b3ec8

    SHA256

    aa254f4aa4b3917f8489526c5fe2fabee17e9fc4ade143656ea3035204a272ea

    SHA512

    d67c1ee5690e2e0ae043b6180e3040a9d33b73fa329a284b7b6d7f2e8a965e0cbdc3d5fb43ffbc75b34fecc8603e8d24fa27d120b5fc12cdc51be9ca4cab574e

  • memory/1532-111-0x0000000000400000-0x0000000002AF9000-memory.dmp

    Filesize

    39.0MB

  • memory/1532-87-0x0000000000400000-0x0000000002AF9000-memory.dmp

    Filesize

    39.0MB

  • memory/1532-55-0x0000000000220000-0x0000000000235000-memory.dmp

    Filesize

    84KB

  • memory/1532-118-0x0000000000400000-0x0000000002AF9000-memory.dmp

    Filesize

    39.0MB

  • memory/1532-56-0x0000000000400000-0x0000000002AF9000-memory.dmp

    Filesize

    39.0MB

  • memory/1532-58-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/1532-76-0x0000000000400000-0x0000000002AF9000-memory.dmp

    Filesize

    39.0MB

  • memory/1548-138-0x00000000020D0000-0x000000000227A000-memory.dmp

    Filesize

    1.7MB

  • memory/1548-139-0x0000000000400000-0x00000000008A8000-memory.dmp

    Filesize

    4.7MB

  • memory/1548-140-0x0000000000400000-0x00000000008A8000-memory.dmp

    Filesize

    4.7MB

  • memory/1548-141-0x0000000000400000-0x00000000008A8000-memory.dmp

    Filesize

    4.7MB

  • memory/1548-142-0x0000000000400000-0x00000000008A8000-memory.dmp

    Filesize

    4.7MB

  • memory/1548-143-0x0000000000400000-0x00000000008A8000-memory.dmp

    Filesize

    4.7MB

  • memory/1720-128-0x0000000000400000-0x00000000008A8000-memory.dmp

    Filesize

    4.7MB

  • memory/1720-127-0x0000000000400000-0x00000000008A8000-memory.dmp

    Filesize

    4.7MB

  • memory/1720-126-0x0000000000400000-0x00000000008A8000-memory.dmp

    Filesize

    4.7MB

  • memory/1720-125-0x00000000023A0000-0x0000000002770000-memory.dmp

    Filesize

    3.8MB

  • memory/1720-137-0x0000000000400000-0x00000000008A8000-memory.dmp

    Filesize

    4.7MB

  • memory/1720-124-0x00000000021F0000-0x000000000239A000-memory.dmp

    Filesize

    1.7MB