Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-10-2024 17:14

General

  • Target

    e2667a1769bd8eafb36bc395744f55d16aeaa68f2f3a16ae861d28a39f1f0670N.exe

  • Size

    1.2MB

  • MD5

    a5b8ec0001c189730d9512322f2df970

  • SHA1

    22f22f8fcbee6f659e0f4c5b0945435a3961dd28

  • SHA256

    e2667a1769bd8eafb36bc395744f55d16aeaa68f2f3a16ae861d28a39f1f0670

  • SHA512

    81ddd3300625c00c3394498a4d7827a4c4880e1792c7d1f2257bae8e20b4d6265b25fd0b21a045adaf11e6408623053ae4a7620b4431df9f4806ed134d11aa90

  • SSDEEP

    24576:D9rCMNQ/IrLGNu0WjT9tT392gLoB8Duqs6MxYBe:D8SPGu0W1tT392gLoJ+B

Malware Config

Signatures

  • Detects Renamer worm. 2 IoCs

    Renamer aka Grename is worm written in Delphi.

  • Renamer, Grenam

    Renamer aka Grenam is a worm written in Delphi.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Drops autorun.inf file 1 TTPs 2 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e2667a1769bd8eafb36bc395744f55d16aeaa68f2f3a16ae861d28a39f1f0670N.exe
    "C:\Users\Admin\AppData\Local\Temp\e2667a1769bd8eafb36bc395744f55d16aeaa68f2f3a16ae861d28a39f1f0670N.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2236
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\e2667a1769bd8eafb36bc395744f55d16aeaa68f2f3a16ae861d28a39f1f0670N.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2212
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ULtRwSVtKnVk.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4616
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ULtRwSVtKnVk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp32D3.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4668
    • C:\Users\Admin\AppData\Local\Temp\e2667a1769bd8eafb36bc395744f55d16aeaa68f2f3a16ae861d28a39f1f0670N.exe
      "C:\Users\Admin\AppData\Local\Temp\e2667a1769bd8eafb36bc395744f55d16aeaa68f2f3a16ae861d28a39f1f0670N.exe"
      2⤵
      • Drops startup file
      • Drops autorun.inf file
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      PID:2756

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files\Java\jdk-1.8\bin\vjavaws.ico

    Filesize

    4KB

    MD5

    38b41d03e9dfcbbd08210c5f0b50ba71

    SHA1

    2fbfde75ce9fe8423d8e7720bf7408cedcb57a70

    SHA256

    611f2cb2e03bd8dbcb584cd0a1c48accfba072dd3fc4e6d3144e2062553637f5

    SHA512

    ec97556b6ff6023d9e6302ba586ef27b1b54fbf7e8ac04ff318aa4694f13ad343049210ef17b7b603963984c1340589665d67d9c65fec0f91053ff43b1401ba9

  • C:\Program Files\Microsoft Office 15\ClientX64\vIntegratedOffice.ico

    Filesize

    4KB

    MD5

    3ea9bcbc01e1a652de5a6fc291a66d1a

    SHA1

    aee490d53ee201879dff37503a0796c77642a792

    SHA256

    a058bfd185fe714927e15642004866449bce425d34292a08af56d66cf03ebe6c

    SHA512

    7c740132f026341770b6a20575786da581d8a31850d0d680978a00cc4dfca1e848ef9cdc32e51bae680ea13f6cc0d7324c38765cb4e26dcb2e423aced7da0501

  • C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-001F-0C0A-1000-0000000FF1CE}\vmisc.ico

    Filesize

    4KB

    MD5

    fc27f73816c9f640d800cdc1c9294751

    SHA1

    e6c3d8835d1de4e9606e5588e741cd1be27398f6

    SHA256

    3cc5043caa157e5f9b1870527b8c323850bdae1e58d6760e4e895d2ab8a35a05

    SHA512

    9e36b96acc97bc7cd45e67a47f1ae7ab7d3818cc2fdaad147524ce9e4baedfaac9cd012923ec65db763bfd850c65b497376bb0694508bee59747f97bf1591fd4

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_j2pglrrz.xta.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp32D3.tmp

    Filesize

    1KB

    MD5

    d2b867b5e4f7f6c31e4794c612d0374e

    SHA1

    6a7456cdfb05b7cb8c9fdc9cb86cedb633f8c959

    SHA256

    5648be74ea12ad00d113b086d6ad0fb450f9416ec6edb4c0b9493f33f0a78d44

    SHA512

    47b155d69ec0372f7b1819481dd19a481308359cd0791e4f43b125eff69d83b542f3b17aaf529d9c90969b128cc61dc2966ce0e39d81c5ceba986d76b014f365

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

    Filesize

    1.2MB

    MD5

    a5b8ec0001c189730d9512322f2df970

    SHA1

    22f22f8fcbee6f659e0f4c5b0945435a3961dd28

    SHA256

    e2667a1769bd8eafb36bc395744f55d16aeaa68f2f3a16ae861d28a39f1f0670

    SHA512

    81ddd3300625c00c3394498a4d7827a4c4880e1792c7d1f2257bae8e20b4d6265b25fd0b21a045adaf11e6408623053ae4a7620b4431df9f4806ed134d11aa90

  • F:\autorun.inf

    Filesize

    102B

    MD5

    5513829683bff23161ca7d8595c25c72

    SHA1

    9961b65bbd3bac109dddd3a161fc30650e8a7096

    SHA256

    94e323bd9071db7369ade16f45454e7a0dbfb6a39efddc1234c4719d1f7ee4c2

    SHA512

    308c84446106cda0a71e37b0de46aaf4b7361f9ddcc3c4c29f8e87da8acb606525dce8a42caf9d74e708c56b31c524f9535a2f5f4757c6c357401da1c495ddb6

  • memory/2212-36-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB

  • memory/2212-72-0x000000006FB80000-0x000000006FBCC000-memory.dmp

    Filesize

    304KB

  • memory/2212-52-0x00000000067B0000-0x00000000067FC000-memory.dmp

    Filesize

    304KB

  • memory/2212-22-0x0000000005760000-0x0000000005782000-memory.dmp

    Filesize

    136KB

  • memory/2212-23-0x0000000005F80000-0x0000000005FE6000-memory.dmp

    Filesize

    408KB

  • memory/2212-17-0x0000000005170000-0x00000000051A6000-memory.dmp

    Filesize

    216KB

  • memory/2212-18-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB

  • memory/2212-19-0x00000000057E0000-0x0000000005E08000-memory.dmp

    Filesize

    6.2MB

  • memory/2212-20-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB

  • memory/2212-51-0x0000000006720000-0x000000000673E000-memory.dmp

    Filesize

    120KB

  • memory/2212-295-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB

  • memory/2212-25-0x0000000005FF0000-0x0000000006056000-memory.dmp

    Filesize

    408KB

  • memory/2212-117-0x0000000007CC0000-0x0000000007D56000-memory.dmp

    Filesize

    600KB

  • memory/2236-9-0x0000000005920000-0x000000000592A000-memory.dmp

    Filesize

    40KB

  • memory/2236-12-0x0000000009930000-0x0000000009C84000-memory.dmp

    Filesize

    3.3MB

  • memory/2236-11-0x0000000007030000-0x00000000070CC000-memory.dmp

    Filesize

    624KB

  • memory/2236-10-0x0000000006E80000-0x0000000006F86000-memory.dmp

    Filesize

    1.0MB

  • memory/2236-8-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB

  • memory/2236-47-0x0000000006760000-0x0000000006836000-memory.dmp

    Filesize

    856KB

  • memory/2236-0-0x00000000748EE000-0x00000000748EF000-memory.dmp

    Filesize

    4KB

  • memory/2236-7-0x00000000748EE000-0x00000000748EF000-memory.dmp

    Filesize

    4KB

  • memory/2236-6-0x0000000005900000-0x0000000005912000-memory.dmp

    Filesize

    72KB

  • memory/2236-53-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB

  • memory/2236-5-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB

  • memory/2236-4-0x0000000005530000-0x000000000553A000-memory.dmp

    Filesize

    40KB

  • memory/2236-3-0x00000000055A0000-0x0000000005632000-memory.dmp

    Filesize

    584KB

  • memory/2236-2-0x0000000005AB0000-0x0000000006054000-memory.dmp

    Filesize

    5.6MB

  • memory/2236-1-0x00000000009E0000-0x0000000000B1A000-memory.dmp

    Filesize

    1.2MB

  • memory/2756-48-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/2756-50-0x0000000000400000-0x00000000004DB000-memory.dmp

    Filesize

    876KB

  • memory/4616-223-0x0000000007700000-0x000000000771A000-memory.dmp

    Filesize

    104KB

  • memory/4616-218-0x0000000007600000-0x0000000007614000-memory.dmp

    Filesize

    80KB

  • memory/4616-84-0x0000000007430000-0x000000000743A000-memory.dmp

    Filesize

    40KB

  • memory/4616-60-0x000000006FB80000-0x000000006FBCC000-memory.dmp

    Filesize

    304KB

  • memory/4616-234-0x00000000076E0000-0x00000000076E8000-memory.dmp

    Filesize

    32KB

  • memory/4616-215-0x00000000075F0000-0x00000000075FE000-memory.dmp

    Filesize

    56KB

  • memory/4616-83-0x00000000073C0000-0x00000000073DA000-memory.dmp

    Filesize

    104KB

  • memory/4616-71-0x0000000007270000-0x0000000007313000-memory.dmp

    Filesize

    652KB

  • memory/4616-140-0x00000000075C0000-0x00000000075D1000-memory.dmp

    Filesize

    68KB

  • memory/4616-70-0x0000000006FF0000-0x000000000700E000-memory.dmp

    Filesize

    120KB

  • memory/4616-59-0x0000000007030000-0x0000000007062000-memory.dmp

    Filesize

    200KB

  • memory/4616-300-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB

  • memory/4616-82-0x0000000007A00000-0x000000000807A000-memory.dmp

    Filesize

    6.5MB

  • memory/4616-37-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB

  • memory/4616-31-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB

  • memory/4616-21-0x00000000748E0000-0x0000000075090000-memory.dmp

    Filesize

    7.7MB