Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    05-05-2021 10:02

General

  • Target

    PO#KV18RE001_A5491NGOCQUANGTRADEPRODUCTIONSERVICE8.exe

  • Size

    1.0MB

  • MD5

    2b739afb6a131a507cbd4ec0d429a538

  • SHA1

    e0a89c765a173021b67be6b5e8b67ec9075651a9

  • SHA256

    cac57f9210fa4d8fb970249750db6886d99f31e503cdeb6e4641bf1c0055afe7

  • SHA512

    2145bb3c430abcadd26edf4f552643f7ffa6c98d3410cf641a48aa67b4ba36cbe80037056fbfbc3829bccf8619a6fe0c17f4a1267b7a8044b5dec3c389adf993

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    aammorris@askoblue.com
  • Password:
    hbqtHu^3

Extracted

Family

nanocore

Version

1.2.2.0

C2

79.134.225.91:4488

Mutex

098e4f4f-7679-4607-961c-79d0e06713b4

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-02-05T09:58:00.832696536Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4488

  • default_group

    NEW

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    098e4f4f-7679-4607-961c-79d0e06713b4

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    79.134.225.91

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • AgentTesla

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

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • AgentTesla Payload 3 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO#KV18RE001_A5491NGOCQUANGTRADEPRODUCTIONSERVICE8.exe
    "C:\Users\Admin\AppData\Local\Temp\PO#KV18RE001_A5491NGOCQUANGTRADEPRODUCTIONSERVICE8.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1084
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "explorers" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\explorers.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:752
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "explorers" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\explorers.exe"
        3⤵
        • Adds Run key to start application
        PID:292
    • C:\Users\Admin\AppData\Roaming\explorers.exe
      "C:\Users\Admin\AppData\Roaming\explorers.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:728
      • C:\Users\Admin\AppData\Roaming\AMRAW.exe
        "C:\Users\Admin\AppData\Roaming\AMRAW.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1476
      • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
        "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1248
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "LAN Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFE2D.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:1216
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "LAN Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFF37.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:1768

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\tmpFE2D.tmp
    MD5

    f7eb19c49b51cdff67a25c6876a78241

    SHA1

    6d86be501c2fb57b50292a55d3983b7eee8a688d

    SHA256

    c9dab73a0044021d2acbc3952b19dea98cdfd838afc633197bd1bd12d2562fba

    SHA512

    1e94e363f9d4d0dcdfe0a8457642fcfe4f81dff0b39f1d1f00deab9291e133cd40b48c097dfe52c356d4a15c383e0aa08fae28b136937bcc57d5e01861716740

  • C:\Users\Admin\AppData\Local\Temp\tmpFF37.tmp
    MD5

    54865f98871478b2b88b7f8aa6100915

    SHA1

    6f8667f1ce25cebee2a7b460668736ff6bcfac54

    SHA256

    287f7b4372926ff59bb9a14bdfc00ad63f92af8efdb2e14f6f6baf31878fd44e

    SHA512

    caba0bd0cb0eda0710291f9754cfdef1a3d8fdb8b6d07f5d3e4d1e7b09c87f37032287ddef0a75485d6e685afa3510ee64453662e6c8d223ae171b392b58e493

  • C:\Users\Admin\AppData\Roaming\AMRAW.exe
    MD5

    9dd5e6b584f3af71756de02f45b4e0c8

    SHA1

    defec0d8908d24390bc8b39534c208cbd5702c84

    SHA256

    9490e210852a6e7f07b822a4dcd5bd8b2b4bbddb8933226e7730778757a0bcd2

    SHA512

    caf3d94c9be9486c634c544b67eeae8a019dcad1c778202889184c46c07e66297c8ec88b8b8fbfc1051815f70144b0d837f2110ea8c3cf8a1579de79b619c5ff

  • C:\Users\Admin\AppData\Roaming\AMRAW.exe
    MD5

    9dd5e6b584f3af71756de02f45b4e0c8

    SHA1

    defec0d8908d24390bc8b39534c208cbd5702c84

    SHA256

    9490e210852a6e7f07b822a4dcd5bd8b2b4bbddb8933226e7730778757a0bcd2

    SHA512

    caf3d94c9be9486c634c544b67eeae8a019dcad1c778202889184c46c07e66297c8ec88b8b8fbfc1051815f70144b0d837f2110ea8c3cf8a1579de79b619c5ff

  • C:\Users\Admin\AppData\Roaming\explorers.exe
    MD5

    2b739afb6a131a507cbd4ec0d429a538

    SHA1

    e0a89c765a173021b67be6b5e8b67ec9075651a9

    SHA256

    cac57f9210fa4d8fb970249750db6886d99f31e503cdeb6e4641bf1c0055afe7

    SHA512

    2145bb3c430abcadd26edf4f552643f7ffa6c98d3410cf641a48aa67b4ba36cbe80037056fbfbc3829bccf8619a6fe0c17f4a1267b7a8044b5dec3c389adf993

  • C:\Users\Admin\AppData\Roaming\explorers.exe
    MD5

    2b739afb6a131a507cbd4ec0d429a538

    SHA1

    e0a89c765a173021b67be6b5e8b67ec9075651a9

    SHA256

    cac57f9210fa4d8fb970249750db6886d99f31e503cdeb6e4641bf1c0055afe7

    SHA512

    2145bb3c430abcadd26edf4f552643f7ffa6c98d3410cf641a48aa67b4ba36cbe80037056fbfbc3829bccf8619a6fe0c17f4a1267b7a8044b5dec3c389adf993

  • \Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • \Users\Admin\AppData\Roaming\AMRAW.exe
    MD5

    9dd5e6b584f3af71756de02f45b4e0c8

    SHA1

    defec0d8908d24390bc8b39534c208cbd5702c84

    SHA256

    9490e210852a6e7f07b822a4dcd5bd8b2b4bbddb8933226e7730778757a0bcd2

    SHA512

    caf3d94c9be9486c634c544b67eeae8a019dcad1c778202889184c46c07e66297c8ec88b8b8fbfc1051815f70144b0d837f2110ea8c3cf8a1579de79b619c5ff

  • \Users\Admin\AppData\Roaming\explorers.exe
    MD5

    2b739afb6a131a507cbd4ec0d429a538

    SHA1

    e0a89c765a173021b67be6b5e8b67ec9075651a9

    SHA256

    cac57f9210fa4d8fb970249750db6886d99f31e503cdeb6e4641bf1c0055afe7

    SHA512

    2145bb3c430abcadd26edf4f552643f7ffa6c98d3410cf641a48aa67b4ba36cbe80037056fbfbc3829bccf8619a6fe0c17f4a1267b7a8044b5dec3c389adf993

  • \Users\Admin\AppData\Roaming\explorers.exe
    MD5

    2b739afb6a131a507cbd4ec0d429a538

    SHA1

    e0a89c765a173021b67be6b5e8b67ec9075651a9

    SHA256

    cac57f9210fa4d8fb970249750db6886d99f31e503cdeb6e4641bf1c0055afe7

    SHA512

    2145bb3c430abcadd26edf4f552643f7ffa6c98d3410cf641a48aa67b4ba36cbe80037056fbfbc3829bccf8619a6fe0c17f4a1267b7a8044b5dec3c389adf993

  • memory/292-65-0x0000000000000000-mapping.dmp
  • memory/728-77-0x00000000049B1000-0x00000000049B2000-memory.dmp
    Filesize

    4KB

  • memory/728-69-0x0000000000000000-mapping.dmp
  • memory/728-74-0x00000000049B0000-0x00000000049B1000-memory.dmp
    Filesize

    4KB

  • memory/728-80-0x0000000004DC0000-0x0000000004DCB000-memory.dmp
    Filesize

    44KB

  • memory/728-85-0x0000000005030000-0x0000000005031000-memory.dmp
    Filesize

    4KB

  • memory/728-72-0x00000000003E0000-0x00000000003E1000-memory.dmp
    Filesize

    4KB

  • memory/752-64-0x0000000000000000-mapping.dmp
  • memory/1084-66-0x0000000004C31000-0x0000000004C32000-memory.dmp
    Filesize

    4KB

  • memory/1084-61-0x0000000004C30000-0x0000000004C31000-memory.dmp
    Filesize

    4KB

  • memory/1084-59-0x0000000000B50000-0x0000000000B51000-memory.dmp
    Filesize

    4KB

  • memory/1084-63-0x00000000021D0000-0x00000000021F1000-memory.dmp
    Filesize

    132KB

  • memory/1216-95-0x0000000000000000-mapping.dmp
  • memory/1248-101-0x00000000006E0000-0x00000000006E3000-memory.dmp
    Filesize

    12KB

  • memory/1248-90-0x000000000041E792-mapping.dmp
  • memory/1248-92-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1248-94-0x0000000000700000-0x0000000000701000-memory.dmp
    Filesize

    4KB

  • memory/1248-89-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1248-99-0x0000000000630000-0x0000000000635000-memory.dmp
    Filesize

    20KB

  • memory/1248-100-0x0000000000640000-0x0000000000659000-memory.dmp
    Filesize

    100KB

  • memory/1476-88-0x0000000004B50000-0x0000000004B51000-memory.dmp
    Filesize

    4KB

  • memory/1476-83-0x00000000008C0000-0x00000000008C1000-memory.dmp
    Filesize

    4KB

  • memory/1476-79-0x0000000000000000-mapping.dmp
  • memory/1768-97-0x0000000000000000-mapping.dmp