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Analysis

  • max time kernel
    148s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/02/2024, 01:29

General

  • Target

    PO 20078990017432988476.exe

  • Size

    722KB

  • MD5

    31bd10b45a914ae0a1970a09841ca2d9

  • SHA1

    179a360096552c8940107052bb5d1aa216f36f72

  • SHA256

    698fe043efc551bc9c522c8fbc38de3faeefa94a5ce5592863bacbda611f04e0

  • SHA512

    db8cad54866691607c9f47432aaaf6aa97faa1894a7b5bca623c7991c8a021971766302d731df3a090768e96a946a336805af3a5102f16e4237e48a38d650207

  • SSDEEP

    12288:flW3YDmzBh35cqFnG0/D0HPddOBQEYrDTm60aa3C7X/SpIkR:KBvZb0HlsBQXPi60N3C7i

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.flecon.com.sg
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    8CJN6A87XUIU

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.

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Looks up external IP address via web service 1 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\PO 20078990017432988476.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 20078990017432988476.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3588
    • 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\PO 20078990017432988476.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2040
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\IqTgicbK.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:568
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IqTgicbK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp975E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1168
    • C:\Users\Admin\AppData\Local\Temp\PO 20078990017432988476.exe
      "C:\Users\Admin\AppData\Local\Temp\PO 20078990017432988476.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2180

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

    07fae0ec9b20e141bf5af9aef87e7e9d

    SHA1

    64bba83b743d944117c0367ea5b4e9a7d0128954

    SHA256

    a73c170361aa8623d22b87d06190f577b6a096de10981432d321bee6411a499a

    SHA512

    39175fe0b6c67aab278b3ab3c0355e8d62948914c2920c7a287fa2ab130618bfc26b9300e207930fe27702bcea6ef070bb1578a1f1a7d129396b238105d0fadc

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xvlbjalt.mrh.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp975E.tmp

    Filesize

    1KB

    MD5

    b0986a194ec027462fa944826f2085b2

    SHA1

    9933ba5fbddbd629415ec7b867fd2b3357bf60f2

    SHA256

    c699e8461e29a2b289754af722f30a4855dfd54301330e9542fed4fddc63d346

    SHA512

    8a91f683e2257fe4a8de370ec76e68fe3d25cf068f14b95cf34e556ad15f51e1cccb49456af779af8037a0b30b6c7940af79551026e40e679355da0e1cce4c73

  • memory/568-89-0x0000000007DB0000-0x0000000007DC4000-memory.dmp

    Filesize

    80KB

  • memory/568-90-0x0000000007EB0000-0x0000000007ECA000-memory.dmp

    Filesize

    104KB

  • memory/568-91-0x0000000007E90000-0x0000000007E98000-memory.dmp

    Filesize

    32KB

  • memory/568-85-0x0000000007BE0000-0x0000000007BEA000-memory.dmp

    Filesize

    40KB

  • memory/568-81-0x000000007F8E0000-0x000000007F8F0000-memory.dmp

    Filesize

    64KB

  • memory/568-60-0x0000000073050000-0x000000007309C000-memory.dmp

    Filesize

    304KB

  • memory/568-56-0x00000000052B0000-0x00000000052C0000-memory.dmp

    Filesize

    64KB

  • memory/568-99-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/568-26-0x00000000052B0000-0x00000000052C0000-memory.dmp

    Filesize

    64KB

  • memory/568-22-0x00000000052B0000-0x00000000052C0000-memory.dmp

    Filesize

    64KB

  • memory/568-21-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2040-70-0x0000000006100000-0x000000000611E000-memory.dmp

    Filesize

    120KB

  • memory/2040-86-0x00000000070E0000-0x0000000007176000-memory.dmp

    Filesize

    600KB

  • memory/2040-19-0x00000000022F0000-0x0000000002300000-memory.dmp

    Filesize

    64KB

  • memory/2040-17-0x00000000022F0000-0x0000000002300000-memory.dmp

    Filesize

    64KB

  • memory/2040-24-0x00000000053F0000-0x0000000005456000-memory.dmp

    Filesize

    408KB

  • memory/2040-95-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2040-16-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2040-28-0x0000000005510000-0x0000000005576000-memory.dmp

    Filesize

    408KB

  • memory/2040-88-0x0000000007090000-0x000000000709E000-memory.dmp

    Filesize

    56KB

  • memory/2040-45-0x0000000005580000-0x00000000058D4000-memory.dmp

    Filesize

    3.3MB

  • memory/2040-15-0x0000000002250000-0x0000000002286000-memory.dmp

    Filesize

    216KB

  • memory/2040-87-0x0000000007060000-0x0000000007071000-memory.dmp

    Filesize

    68KB

  • memory/2040-23-0x0000000004C80000-0x0000000004CA2000-memory.dmp

    Filesize

    136KB

  • memory/2040-18-0x0000000004D50000-0x0000000005378000-memory.dmp

    Filesize

    6.2MB

  • memory/2040-84-0x0000000006E60000-0x0000000006E7A000-memory.dmp

    Filesize

    104KB

  • memory/2040-83-0x00000000074A0000-0x0000000007B1A000-memory.dmp

    Filesize

    6.5MB

  • memory/2040-53-0x0000000005B30000-0x0000000005B4E000-memory.dmp

    Filesize

    120KB

  • memory/2040-54-0x0000000006070000-0x00000000060BC000-memory.dmp

    Filesize

    304KB

  • memory/2040-55-0x00000000022F0000-0x0000000002300000-memory.dmp

    Filesize

    64KB

  • memory/2040-82-0x0000000006D20000-0x0000000006DC3000-memory.dmp

    Filesize

    652KB

  • memory/2040-58-0x0000000006AE0000-0x0000000006B12000-memory.dmp

    Filesize

    200KB

  • memory/2040-59-0x0000000073050000-0x000000007309C000-memory.dmp

    Filesize

    304KB

  • memory/2040-57-0x000000007EE20000-0x000000007EE30000-memory.dmp

    Filesize

    64KB

  • memory/2040-71-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2180-47-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2180-101-0x0000000005180000-0x0000000005190000-memory.dmp

    Filesize

    64KB

  • memory/2180-100-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2180-92-0x00000000069E0000-0x0000000006A30000-memory.dmp

    Filesize

    320KB

  • memory/2180-52-0x0000000005180000-0x0000000005190000-memory.dmp

    Filesize

    64KB

  • memory/2180-27-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/3588-6-0x0000000006C20000-0x0000000006CBC000-memory.dmp

    Filesize

    624KB

  • memory/3588-0-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3588-48-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3588-34-0x0000000005640000-0x0000000005650000-memory.dmp

    Filesize

    64KB

  • memory/3588-9-0x0000000006BD0000-0x0000000006BE2000-memory.dmp

    Filesize

    72KB

  • memory/3588-5-0x0000000005990000-0x000000000599A000-memory.dmp

    Filesize

    40KB

  • memory/3588-4-0x0000000005640000-0x0000000005650000-memory.dmp

    Filesize

    64KB

  • memory/3588-7-0x0000000005CC0000-0x0000000005CE0000-memory.dmp

    Filesize

    128KB

  • memory/3588-25-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3588-3-0x0000000005730000-0x00000000057C2000-memory.dmp

    Filesize

    584KB

  • memory/3588-2-0x0000000005CE0000-0x0000000006284000-memory.dmp

    Filesize

    5.6MB

  • memory/3588-1-0x0000000000C10000-0x0000000000CC8000-memory.dmp

    Filesize

    736KB

  • memory/3588-8-0x0000000006BC0000-0x0000000006BCE000-memory.dmp

    Filesize

    56KB

  • memory/3588-10-0x0000000006FB0000-0x0000000007034000-memory.dmp

    Filesize

    528KB