Resubmissions

26/03/2024, 10:33

240326-ml1b3aba8y 10

26/03/2024, 10:30

240326-mjtrhagb54 10

Analysis

  • max time kernel
    115s
  • max time network
    121s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/03/2024, 10:30

General

  • Target

    kYyBuIFRcL6U7Fl.exe

  • Size

    604KB

  • MD5

    dc6c813e0b5c0adab63e8f6e47d3fb76

  • SHA1

    c9979e87cf35d8563a16bf52ad762c04c89badc9

  • SHA256

    3d6012eb13b5a891571ea2d7c7bf120b9c12d479e5cb2c6ffc7e515e14c46866

  • SHA512

    c3e83b275c6aedbf56fe581b6e5f5b7f9ec33573c460eca63590a33326c08378dd7ea04b1d80807fdfc74738d432adb9b37892a0655aff8611d2e30f4d9f9ef3

  • SSDEEP

    12288:z+E26ddIYd1x66+9GreDc4bRbOpPE6/5kqRQeB0QzauW2a5W:aOwO1mQreDc4lypPp+kQelzauWS

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\kYyBuIFRcL6U7Fl.exe
    "C:\Users\Admin\AppData\Local\Temp\kYyBuIFRcL6U7Fl.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:436
    • 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\kYyBuIFRcL6U7Fl.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:452
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UoqhCzdpcgs.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4036
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UoqhCzdpcgs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp72FD.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4340
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2860

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • 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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    1538960cbc4608606d9f16e2f2101d96

    SHA1

    c37faea70aab7ccba3dea0410878d1e9c1a889be

    SHA256

    b66f3f87d74a3be2825c056f4f066f06e904dcf0fc17d2dca12ac7a67de53cde

    SHA512

    82aabe2f4578ac4aaed906eabc9b225a98af41a5807a9d87eee7bb3532d82544a0e3c4411bcc1b2569374b3b911c857607ce2af42447bb57da13413241fd8972

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ie2jw4md.tqy.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp72FD.tmp

    Filesize

    1KB

    MD5

    be8f93de5f1d1839387007ab939d0230

    SHA1

    3e6243566e045e7fe44ad8604208ad32507d658d

    SHA256

    b8d975d50a0a4ec0bea2d730b1f47d483f53f512d83fb17c7b0bd315e0a761a6

    SHA512

    d24fe1bc34c2611eeedacfcb422b91e601e9dda89b4f744e63dabb5f7e2869e1a0e485d033676b33d0026cb553cf7c1394362a9c4b47d87bd09158a3a6e4a072

  • memory/436-7-0x0000000005C20000-0x0000000005C2C000-memory.dmp

    Filesize

    48KB

  • memory/436-3-0x0000000005AB0000-0x0000000005B42000-memory.dmp

    Filesize

    584KB

  • memory/436-6-0x0000000005C00000-0x0000000005C12000-memory.dmp

    Filesize

    72KB

  • memory/436-0-0x0000000000FF0000-0x000000000108E000-memory.dmp

    Filesize

    632KB

  • memory/436-8-0x0000000007450000-0x00000000074D2000-memory.dmp

    Filesize

    520KB

  • memory/436-9-0x0000000009AC0000-0x0000000009B5C000-memory.dmp

    Filesize

    624KB

  • memory/436-48-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/436-5-0x0000000005A80000-0x0000000005A8A000-memory.dmp

    Filesize

    40KB

  • memory/436-1-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/436-2-0x0000000006060000-0x0000000006604000-memory.dmp

    Filesize

    5.6MB

  • memory/436-4-0x0000000005C30000-0x0000000005C40000-memory.dmp

    Filesize

    64KB

  • memory/452-15-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/452-86-0x0000000007710000-0x000000000772A000-memory.dmp

    Filesize

    104KB

  • memory/452-93-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/452-22-0x0000000005A50000-0x0000000005AB6000-memory.dmp

    Filesize

    408KB

  • memory/452-17-0x0000000004C80000-0x0000000004C90000-memory.dmp

    Filesize

    64KB

  • memory/452-30-0x0000000005AC0000-0x0000000005E14000-memory.dmp

    Filesize

    3.3MB

  • memory/452-87-0x00000000076F0000-0x00000000076F8000-memory.dmp

    Filesize

    32KB

  • memory/452-20-0x00000000058F0000-0x0000000005956000-memory.dmp

    Filesize

    408KB

  • memory/452-29-0x0000000004C80000-0x0000000004C90000-memory.dmp

    Filesize

    64KB

  • memory/452-16-0x00000000052C0000-0x00000000058E8000-memory.dmp

    Filesize

    6.2MB

  • memory/452-14-0x0000000002790000-0x00000000027C6000-memory.dmp

    Filesize

    216KB

  • memory/452-78-0x0000000004C80000-0x0000000004C90000-memory.dmp

    Filesize

    64KB

  • memory/452-85-0x0000000007610000-0x0000000007624000-memory.dmp

    Filesize

    80KB

  • memory/452-82-0x0000000007650000-0x00000000076E6000-memory.dmp

    Filesize

    600KB

  • memory/452-67-0x0000000070E00000-0x0000000070E4C000-memory.dmp

    Filesize

    304KB

  • memory/452-68-0x000000007F870000-0x000000007F880000-memory.dmp

    Filesize

    64KB

  • memory/2860-47-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/2860-49-0x0000000004F60000-0x0000000004F70000-memory.dmp

    Filesize

    64KB

  • memory/2860-96-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/2860-95-0x0000000006490000-0x00000000064E0000-memory.dmp

    Filesize

    320KB

  • memory/2860-31-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/4036-50-0x0000000006310000-0x000000000632E000-memory.dmp

    Filesize

    120KB

  • memory/4036-53-0x000000007FBB0000-0x000000007FBC0000-memory.dmp

    Filesize

    64KB

  • memory/4036-51-0x0000000006340000-0x000000000638C000-memory.dmp

    Filesize

    304KB

  • memory/4036-79-0x0000000007C70000-0x00000000082EA000-memory.dmp

    Filesize

    6.5MB

  • memory/4036-80-0x0000000007630000-0x000000000764A000-memory.dmp

    Filesize

    104KB

  • memory/4036-81-0x00000000076A0000-0x00000000076AA000-memory.dmp

    Filesize

    40KB

  • memory/4036-54-0x0000000070E00000-0x0000000070E4C000-memory.dmp

    Filesize

    304KB

  • memory/4036-83-0x0000000007830000-0x0000000007841000-memory.dmp

    Filesize

    68KB

  • memory/4036-84-0x0000000007860000-0x000000000786E000-memory.dmp

    Filesize

    56KB

  • memory/4036-52-0x00000000068C0000-0x00000000068F2000-memory.dmp

    Filesize

    200KB

  • memory/4036-65-0x00000000028D0000-0x00000000028E0000-memory.dmp

    Filesize

    64KB

  • memory/4036-32-0x00000000028D0000-0x00000000028E0000-memory.dmp

    Filesize

    64KB

  • memory/4036-23-0x00000000028D0000-0x00000000028E0000-memory.dmp

    Filesize

    64KB

  • memory/4036-19-0x0000000005330000-0x0000000005352000-memory.dmp

    Filesize

    136KB

  • memory/4036-21-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/4036-94-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/4036-66-0x0000000007510000-0x00000000075B3000-memory.dmp

    Filesize

    652KB

  • memory/4036-64-0x00000000068A0000-0x00000000068BE000-memory.dmp

    Filesize

    120KB