Analysis

  • max time kernel
    67s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-04-2024 01:40

General

  • Target

    BL copy PDF.exe

  • Size

    822KB

  • MD5

    5a12438b3b4c926c12a9376c7bf13426

  • SHA1

    c3185c6a5e5f07a5befbe4af7131d05634f5d1a3

  • SHA256

    1a794211deaa0ecb6abc6101d7c1bd61111b4dd2d895ee7ecf78fbf17f4c9ab3

  • SHA512

    16c1e0e18eb8b3345b8b05443b782cb1dd35492ac986811c39f3cdce8dfe85b003aba029ffca0e38aa33c951d0d08281825152b0e239471eac3de18ac67864d0

  • SSDEEP

    12288:tEqnHvjNIrpf9rN/mc/CaBmIwsyaPSIir97G6NLOZCGKEgbjuPBB5uO12rq:txPjKr5BNDWVxcSIiRG6atlB5N

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.fascia-arch.com
  • Port:
    587
  • Username:
    brian@fascia-arch.com
  • Password:
    HERbertstown1987
  • Email To:
    donj5425@gmail.com

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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BL copy PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\BL copy PDF.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2228
    • 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\BL copy PDF.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4016
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CmxzrHBB.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2376
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CmxzrHBB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7407.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4080
    • C:\Users\Admin\AppData\Local\Temp\BL copy PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\BL copy PDF.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2512

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

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\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

    49371bc3e8479b14c6b168dbdf6f397b

    SHA1

    79c0c2fd79125fea1968b0d62fcea265f629fb99

    SHA256

    efdb77135f8a630baabf950f8e41ae249f75fb45533b5576d64a346ee7ef7316

    SHA512

    5d2e11d1137ead3c2bb4d3eada14d26448091945dd4f37278618bef4e9ed5f510526621d9a12c61f951aa3afbe9c61995b72cf5f82e5d4d4f05bb95b6529e0a1

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h0pi4lz4.jpm.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp7407.tmp
    Filesize

    1KB

    MD5

    e7e4de112faf4ec2130f5a2b198c6724

    SHA1

    1052a51fb995f41373d0749d259dd55c7e4f083a

    SHA256

    e3d76ce643d9a814531a4ff079ffacd97b430598036bcc7de359de3fe29806d4

    SHA512

    e6c9173142e50237111b6c467a82f2c093c20cf114ac0fcde566f627f3ef7b265298de56adadfb5b7a6d45e7e35c4ea4b4d1dda1394261c2ed72be174faaa80b

  • memory/2228-6-0x0000000005430000-0x0000000005450000-memory.dmp
    Filesize

    128KB

  • memory/2228-5-0x0000000005190000-0x000000000519A000-memory.dmp
    Filesize

    40KB

  • memory/2228-4-0x0000000005450000-0x0000000005460000-memory.dmp
    Filesize

    64KB

  • memory/2228-7-0x0000000006330000-0x0000000006344000-memory.dmp
    Filesize

    80KB

  • memory/2228-8-0x0000000009090000-0x0000000009114000-memory.dmp
    Filesize

    528KB

  • memory/2228-9-0x000000000C1B0000-0x000000000C24C000-memory.dmp
    Filesize

    624KB

  • memory/2228-38-0x0000000074CF0000-0x00000000754A0000-memory.dmp
    Filesize

    7.7MB

  • memory/2228-3-0x00000000051D0000-0x0000000005262000-memory.dmp
    Filesize

    584KB

  • memory/2228-2-0x0000000005780000-0x0000000005D24000-memory.dmp
    Filesize

    5.6MB

  • memory/2228-0-0x0000000000800000-0x00000000008D4000-memory.dmp
    Filesize

    848KB

  • memory/2228-1-0x0000000074CF0000-0x00000000754A0000-memory.dmp
    Filesize

    7.7MB

  • memory/2376-87-0x0000000074CF0000-0x00000000754A0000-memory.dmp
    Filesize

    7.7MB

  • memory/2376-18-0x00000000025C0000-0x00000000025D0000-memory.dmp
    Filesize

    64KB

  • memory/2376-81-0x0000000007560000-0x0000000007568000-memory.dmp
    Filesize

    32KB

  • memory/2376-62-0x0000000075550000-0x000000007559C000-memory.dmp
    Filesize

    304KB

  • memory/2376-80-0x0000000007580000-0x000000000759A000-memory.dmp
    Filesize

    104KB

  • memory/2376-72-0x00000000070F0000-0x0000000007193000-memory.dmp
    Filesize

    652KB

  • memory/2376-79-0x0000000007480000-0x0000000007494000-memory.dmp
    Filesize

    80KB

  • memory/2376-20-0x0000000074CF0000-0x00000000754A0000-memory.dmp
    Filesize

    7.7MB

  • memory/2376-19-0x00000000025C0000-0x00000000025D0000-memory.dmp
    Filesize

    64KB

  • memory/2376-73-0x0000000007880000-0x0000000007EFA000-memory.dmp
    Filesize

    6.5MB

  • memory/2376-76-0x00000000074C0000-0x0000000007556000-memory.dmp
    Filesize

    600KB

  • memory/2376-48-0x0000000005F00000-0x0000000005F1E000-memory.dmp
    Filesize

    120KB

  • memory/2376-49-0x0000000005F30000-0x0000000005F7C000-memory.dmp
    Filesize

    304KB

  • memory/2376-75-0x00000000072B0000-0x00000000072BA000-memory.dmp
    Filesize

    40KB

  • memory/2512-90-0x0000000006920000-0x0000000006970000-memory.dmp
    Filesize

    320KB

  • memory/2512-23-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/4016-25-0x00000000058A0000-0x0000000005906000-memory.dmp
    Filesize

    408KB

  • memory/4016-50-0x00000000078A0000-0x00000000078D2000-memory.dmp
    Filesize

    200KB

  • memory/4016-74-0x0000000007BF0000-0x0000000007C0A000-memory.dmp
    Filesize

    104KB

  • memory/4016-61-0x0000000006E70000-0x0000000006E8E000-memory.dmp
    Filesize

    120KB

  • memory/4016-51-0x0000000075550000-0x000000007559C000-memory.dmp
    Filesize

    304KB

  • memory/4016-28-0x0000000006310000-0x0000000006664000-memory.dmp
    Filesize

    3.3MB

  • memory/4016-77-0x0000000007DF0000-0x0000000007E01000-memory.dmp
    Filesize

    68KB

  • memory/4016-78-0x0000000007E20000-0x0000000007E2E000-memory.dmp
    Filesize

    56KB

  • memory/4016-26-0x00000000061A0000-0x0000000006206000-memory.dmp
    Filesize

    408KB

  • memory/4016-24-0x0000000005800000-0x0000000005822000-memory.dmp
    Filesize

    136KB

  • memory/4016-22-0x0000000005AC0000-0x00000000060E8000-memory.dmp
    Filesize

    6.2MB

  • memory/4016-15-0x0000000005310000-0x0000000005346000-memory.dmp
    Filesize

    216KB

  • memory/4016-16-0x0000000005480000-0x0000000005490000-memory.dmp
    Filesize

    64KB

  • memory/4016-17-0x0000000005480000-0x0000000005490000-memory.dmp
    Filesize

    64KB

  • memory/4016-88-0x0000000074CF0000-0x00000000754A0000-memory.dmp
    Filesize

    7.7MB

  • memory/4016-14-0x0000000074CF0000-0x00000000754A0000-memory.dmp
    Filesize

    7.7MB