Analysis

  • max time kernel
    151s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25-06-2022 23:10

General

  • Target

    377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37.exe

  • Size

    4.4MB

  • MD5

    f928736eeb374926b60aa36b64b80746

  • SHA1

    ff479c35c28dc942b0319acdbfa09db9b1f07f75

  • SHA256

    377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37

  • SHA512

    d361722daca8e21601a4267eae03152d147ec657332c396eec2d6ef268fa54b3da9eec736e3539774dacc608c5e395a251d48c263ce853b518b1fdcf722e075d

Malware Config

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • NirSoft MailPassView 11 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 10 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 15 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37.exe
    "C:\Users\Admin\AppData\Local\Temp\377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1504
    • C:\Users\Admin\AppData\Roaming\tni.exe
      "C:\Users\Admin\AppData\Roaming\tni.exe"
      2⤵
      • Executes dropped EXE
      PID:2044
    • C:\Windows\wlrmdr.exe
      "C:\Windows\wlrmdr.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:1916
      • C:\Windows\wlrmdr.exe
        "C:\Windows\wlrmdr.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1992
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
          4⤵
          • Accesses Microsoft Outlook accounts
          PID:1672
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
          4⤵
            PID:1620
        • C:\Users\Admin\AppData\Roaming\csrss.exe
          "C:\Users\Admin\AppData\Roaming\csrss.exe" -keyhide -prochide 1992 -reg C:\Windows\wlrmdr.exe -proc 1992 C:\Windows\wlrmdr.exe
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1428

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Scripting

    1
    T1064

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\holderwb.txt
      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Roaming\csrss.exe
      Filesize

      4.4MB

      MD5

      f928736eeb374926b60aa36b64b80746

      SHA1

      ff479c35c28dc942b0319acdbfa09db9b1f07f75

      SHA256

      377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37

      SHA512

      d361722daca8e21601a4267eae03152d147ec657332c396eec2d6ef268fa54b3da9eec736e3539774dacc608c5e395a251d48c263ce853b518b1fdcf722e075d

    • C:\Users\Admin\AppData\Roaming\csrss.exe
      Filesize

      4.4MB

      MD5

      f928736eeb374926b60aa36b64b80746

      SHA1

      ff479c35c28dc942b0319acdbfa09db9b1f07f75

      SHA256

      377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37

      SHA512

      d361722daca8e21601a4267eae03152d147ec657332c396eec2d6ef268fa54b3da9eec736e3539774dacc608c5e395a251d48c263ce853b518b1fdcf722e075d

    • C:\Users\Admin\AppData\Roaming\tni.exe
      Filesize

      4.0MB

      MD5

      f1b0754b98de84caa935d559a5e1de0e

      SHA1

      bc781f71922fe03416a045980991e7806a412542

      SHA256

      a1c6e7db9375bd95104d6b7056350c75fea9c73ed1acd458269deb86fb7cf993

      SHA512

      245bfe6bb18d5ba244013a66d643430469115ce065354dc0c3b3144c11b3d1f89efc4bae9946732bbf065ef255b96ccdf3ab0c6eec8ff494c4794c7e8a91d65d

    • C:\Windows\wlrmdr.exe
      Filesize

      4.4MB

      MD5

      f928736eeb374926b60aa36b64b80746

      SHA1

      ff479c35c28dc942b0319acdbfa09db9b1f07f75

      SHA256

      377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37

      SHA512

      d361722daca8e21601a4267eae03152d147ec657332c396eec2d6ef268fa54b3da9eec736e3539774dacc608c5e395a251d48c263ce853b518b1fdcf722e075d

    • C:\Windows\wlrmdr.exe
      Filesize

      4.4MB

      MD5

      f928736eeb374926b60aa36b64b80746

      SHA1

      ff479c35c28dc942b0319acdbfa09db9b1f07f75

      SHA256

      377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37

      SHA512

      d361722daca8e21601a4267eae03152d147ec657332c396eec2d6ef268fa54b3da9eec736e3539774dacc608c5e395a251d48c263ce853b518b1fdcf722e075d

    • C:\Windows\wlrmdr.exe
      Filesize

      4.4MB

      MD5

      f928736eeb374926b60aa36b64b80746

      SHA1

      ff479c35c28dc942b0319acdbfa09db9b1f07f75

      SHA256

      377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37

      SHA512

      d361722daca8e21601a4267eae03152d147ec657332c396eec2d6ef268fa54b3da9eec736e3539774dacc608c5e395a251d48c263ce853b518b1fdcf722e075d

    • \Users\Admin\AppData\Roaming\csrss.exe
      Filesize

      4.4MB

      MD5

      f928736eeb374926b60aa36b64b80746

      SHA1

      ff479c35c28dc942b0319acdbfa09db9b1f07f75

      SHA256

      377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37

      SHA512

      d361722daca8e21601a4267eae03152d147ec657332c396eec2d6ef268fa54b3da9eec736e3539774dacc608c5e395a251d48c263ce853b518b1fdcf722e075d

    • \Users\Admin\AppData\Roaming\csrss.exe
      Filesize

      4.4MB

      MD5

      f928736eeb374926b60aa36b64b80746

      SHA1

      ff479c35c28dc942b0319acdbfa09db9b1f07f75

      SHA256

      377c0e0f9495b4204ad0d4081f6d9c38a261ba7b2573ca06cb8460c19f5dbf37

      SHA512

      d361722daca8e21601a4267eae03152d147ec657332c396eec2d6ef268fa54b3da9eec736e3539774dacc608c5e395a251d48c263ce853b518b1fdcf722e075d

    • \Users\Admin\AppData\Roaming\tni.exe
      Filesize

      4.0MB

      MD5

      f1b0754b98de84caa935d559a5e1de0e

      SHA1

      bc781f71922fe03416a045980991e7806a412542

      SHA256

      a1c6e7db9375bd95104d6b7056350c75fea9c73ed1acd458269deb86fb7cf993

      SHA512

      245bfe6bb18d5ba244013a66d643430469115ce065354dc0c3b3144c11b3d1f89efc4bae9946732bbf065ef255b96ccdf3ab0c6eec8ff494c4794c7e8a91d65d

    • memory/1428-101-0x0000000074BD0000-0x000000007517B000-memory.dmp
      Filesize

      5.7MB

    • memory/1428-91-0x0000000074BD0000-0x000000007517B000-memory.dmp
      Filesize

      5.7MB

    • memory/1428-86-0x0000000000000000-mapping.dmp
    • memory/1504-64-0x0000000074BD0000-0x000000007517B000-memory.dmp
      Filesize

      5.7MB

    • memory/1504-54-0x0000000076561000-0x0000000076563000-memory.dmp
      Filesize

      8KB

    • memory/1504-55-0x0000000074BD0000-0x000000007517B000-memory.dmp
      Filesize

      5.7MB

    • memory/1504-59-0x0000000009280000-0x000000000B060000-memory.dmp
      Filesize

      29.9MB

    • memory/1620-102-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1620-103-0x0000000000442628-mapping.dmp
    • memory/1620-106-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1620-108-0x0000000000400000-0x0000000000458000-memory.dmp
      Filesize

      352KB

    • memory/1672-93-0x0000000000411654-mapping.dmp
    • memory/1672-92-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1672-96-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1672-98-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1672-100-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1916-82-0x0000000074BD0000-0x000000007517B000-memory.dmp
      Filesize

      5.7MB

    • memory/1916-90-0x0000000074BD0000-0x000000007517B000-memory.dmp
      Filesize

      5.7MB

    • memory/1916-60-0x0000000000000000-mapping.dmp
    • memory/1992-72-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1992-70-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1992-74-0x000000000047FDAE-mapping.dmp
    • memory/1992-97-0x0000000000C55000-0x0000000000C66000-memory.dmp
      Filesize

      68KB

    • memory/1992-77-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1992-99-0x0000000074BD0000-0x000000007517B000-memory.dmp
      Filesize

      5.7MB

    • memory/1992-109-0x0000000000C55000-0x0000000000C66000-memory.dmp
      Filesize

      68KB

    • memory/1992-79-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1992-68-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1992-66-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1992-65-0x0000000000400000-0x0000000000484000-memory.dmp
      Filesize

      528KB

    • memory/1992-83-0x0000000074BD0000-0x000000007517B000-memory.dmp
      Filesize

      5.7MB

    • memory/2044-57-0x0000000000000000-mapping.dmp
    • memory/2044-81-0x0000000000400000-0x00000000021DF180-memory.dmp
      Filesize

      29.9MB