Analysis

  • max time kernel
    66s
  • max time network
    53s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-04-2024 10:58

General

  • Target

    cXPFfk0pBp7bEsb.exe

  • Size

    666KB

  • MD5

    3e142ca68f08905cab743c39bf7f53ba

  • SHA1

    65ff38bc2e98f89f01088e77f921230c02ed870d

  • SHA256

    18f44886b9280533487b58a1feab7a3ebb463718417109643467315250b460b3

  • SHA512

    afd533e46aa2cdc398d11c7422d7aff25dcafadcaf1b15084b5bec0c5890de2634ad09b8cca37d56e2692dfc63c5a96ad493fc719104fa610f2f36c3968df164

  • SSDEEP

    12288:W4OB778QbN5vI3vIXpeFIJMTzfSmzQy3kymdJTRD1iKNDsreh5DSqiUNeGSggAU:TOBNN5QAZHJozSyC9PDX5WaXVU

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.

  • 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 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).

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cXPFfk0pBp7bEsb.exe
    "C:\Users\Admin\AppData\Local\Temp\cXPFfk0pBp7bEsb.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3416
    • 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\cXPFfk0pBp7bEsb.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3476
    • C:\Users\Admin\AppData\Local\Temp\cXPFfk0pBp7bEsb.exe
      "C:\Users\Admin\AppData\Local\Temp\cXPFfk0pBp7bEsb.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5036

Network

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fpmlxquh.cbb.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/3416-6-0x0000000005970000-0x0000000005988000-memory.dmp
    Filesize

    96KB

  • memory/3416-2-0x0000000005C10000-0x00000000061B4000-memory.dmp
    Filesize

    5.6MB

  • memory/3416-3-0x0000000005700000-0x0000000005792000-memory.dmp
    Filesize

    584KB

  • memory/3416-4-0x0000000005990000-0x00000000059A0000-memory.dmp
    Filesize

    64KB

  • memory/3416-5-0x00000000057A0000-0x00000000057AA000-memory.dmp
    Filesize

    40KB

  • memory/3416-13-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/3416-7-0x0000000005AC0000-0x0000000005ACE000-memory.dmp
    Filesize

    56KB

  • memory/3416-8-0x0000000005AD0000-0x0000000005AE6000-memory.dmp
    Filesize

    88KB

  • memory/3416-9-0x00000000068D0000-0x0000000006954000-memory.dmp
    Filesize

    528KB

  • memory/3416-10-0x00000000091C0000-0x000000000925C000-memory.dmp
    Filesize

    624KB

  • memory/3416-0-0x0000000000C60000-0x0000000000D0C000-memory.dmp
    Filesize

    688KB

  • memory/3416-1-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/3476-51-0x0000000006F30000-0x0000000006F3A000-memory.dmp
    Filesize

    40KB

  • memory/3476-37-0x0000000070610000-0x000000007065C000-memory.dmp
    Filesize

    304KB

  • memory/3476-16-0x00000000045D0000-0x0000000004606000-memory.dmp
    Filesize

    216KB

  • memory/3476-19-0x0000000004730000-0x0000000004740000-memory.dmp
    Filesize

    64KB

  • memory/3476-21-0x0000000004D70000-0x0000000005398000-memory.dmp
    Filesize

    6.2MB

  • memory/3476-60-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/3476-18-0x0000000004730000-0x0000000004740000-memory.dmp
    Filesize

    64KB

  • memory/3476-57-0x00000000071E0000-0x00000000071E8000-memory.dmp
    Filesize

    32KB

  • memory/3476-22-0x0000000004BC0000-0x0000000004BE2000-memory.dmp
    Filesize

    136KB

  • memory/3476-23-0x0000000004C60000-0x0000000004CC6000-memory.dmp
    Filesize

    408KB

  • memory/3476-56-0x0000000007200000-0x000000000721A000-memory.dmp
    Filesize

    104KB

  • memory/3476-33-0x0000000005560000-0x00000000058B4000-memory.dmp
    Filesize

    3.3MB

  • memory/3476-34-0x0000000005B90000-0x0000000005BAE000-memory.dmp
    Filesize

    120KB

  • memory/3476-35-0x0000000005C30000-0x0000000005C7C000-memory.dmp
    Filesize

    304KB

  • memory/3476-36-0x0000000006160000-0x0000000006192000-memory.dmp
    Filesize

    200KB

  • memory/3476-17-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/3476-47-0x00000000061A0000-0x00000000061BE000-memory.dmp
    Filesize

    120KB

  • memory/3476-48-0x0000000006DC0000-0x0000000006E63000-memory.dmp
    Filesize

    652KB

  • memory/3476-50-0x0000000006EC0000-0x0000000006EDA000-memory.dmp
    Filesize

    104KB

  • memory/3476-49-0x0000000007500000-0x0000000007B7A000-memory.dmp
    Filesize

    6.5MB

  • memory/3476-55-0x0000000007100000-0x0000000007114000-memory.dmp
    Filesize

    80KB

  • memory/3476-52-0x0000000007140000-0x00000000071D6000-memory.dmp
    Filesize

    600KB

  • memory/3476-53-0x00000000070C0000-0x00000000070D1000-memory.dmp
    Filesize

    68KB

  • memory/3476-54-0x00000000070F0000-0x00000000070FE000-memory.dmp
    Filesize

    56KB

  • memory/5036-11-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/5036-14-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/5036-15-0x00000000054C0000-0x00000000054D0000-memory.dmp
    Filesize

    64KB

  • memory/5036-20-0x0000000005540000-0x00000000055A6000-memory.dmp
    Filesize

    408KB

  • memory/5036-61-0x00000000749B0000-0x0000000075160000-memory.dmp
    Filesize

    7.7MB

  • memory/5036-62-0x0000000006D70000-0x0000000006DC0000-memory.dmp
    Filesize

    320KB

  • memory/5036-63-0x00000000054C0000-0x00000000054D0000-memory.dmp
    Filesize

    64KB