Analysis

  • max time kernel
    129s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    08-04-2021 07:04

General

  • Target

    Outstanding invoices.exe

  • Size

    528KB

  • MD5

    95df4d14a28e363ce70d5d7962427c24

  • SHA1

    ffcdfb4eb40d64eb13e50ee13c0ae9a73a9ee8ee

  • SHA256

    e9573722d616d444c71e82f1ac6973921f3c942af4403760e0292b3ebf9159b0

  • SHA512

    983c7bb6d01ac1729c86fc994ebbb9bb40b1dd1bd27b2ff96d8a32a3b1b547d1fb2fd3e2f24d2b8b5cedb1e10dbb666a6ced71b8d89c94595ed3b46cc8df16e6

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.babcockvalve.com
  • Port:
    587
  • Username:
    ziara.landa@babcockvalve.com
  • Password:
    hA$ks@%9

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • Nirsoft 5 IoCs
  • Executes dropped EXE 4 IoCs
  • 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.

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

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

  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Outstanding invoices.exe
    "C:\Users\Admin\AppData\Local\Temp\Outstanding invoices.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:744
    • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /EXEFilename "C:\Windows\System32\sc.exe" /WindowState 0 /CommandLine "stop WinDefend" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3140
      • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /SpecialRun 4101d8 3140
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4004
    • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
      "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /EXEFilename "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" /WindowState 0 /CommandLine "rmdir 'C:\ProgramData\Microsoft\Windows Defender' -Recurse" /StartDirectory "" /RunAs 8 /Run
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2836
      • C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
        "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /SpecialRun 4101d8 2836
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:940
    • C:\Users\Admin\AppData\Local\Temp\Outstanding invoices.exe
      "C:\Users\Admin\AppData\Local\Temp\Outstanding invoices.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2140

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Outstanding invoices.exe.log
    MD5

    4f9330dcb7e8730af9341cfdf0d8030f

    SHA1

    67daaf17560b15fe1d861139bce85a3ff6dbed23

    SHA256

    1c25f424605d0e3ccf1ec077c36b3d2c89aa628521d10df851c2ff7689ad4617

    SHA512

    e3becfad18409be0797d172e8b1364775726f9d33d8f125c87656a829b0c0c86fcec433db4446371e68530c0d7cb594fdcf28bb75e1f5d4fba64fe38329d9a40

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

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

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

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

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

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

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

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

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

    17fc12902f4769af3a9271eb4e2dacce

    SHA1

    9a4a1581cc3971579574f837e110f3bd6d529dab

    SHA256

    29ae7b30ed8394c509c561f6117ea671ec412da50d435099756bbb257fafb10b

    SHA512

    036e0d62490c26dee27ef54e514302e1cc8a14de8ce3b9703bf7caf79cfae237e442c27a0edcf2c4fd41af4195ba9ed7e32e894767ce04467e79110e89522e4a

  • memory/744-8-0x00000000062B0000-0x00000000062B1000-memory.dmp
    Filesize

    4KB

  • memory/744-11-0x0000000005A30000-0x0000000005A31000-memory.dmp
    Filesize

    4KB

  • memory/744-3-0x0000000000FE0000-0x0000000000FE1000-memory.dmp
    Filesize

    4KB

  • memory/744-5-0x00000000018F0000-0x00000000018F2000-memory.dmp
    Filesize

    8KB

  • memory/744-7-0x0000000005950000-0x0000000005951000-memory.dmp
    Filesize

    4KB

  • memory/744-2-0x0000000073A20000-0x000000007410E000-memory.dmp
    Filesize

    6.9MB

  • memory/744-6-0x0000000005870000-0x00000000058C4000-memory.dmp
    Filesize

    336KB

  • memory/940-17-0x0000000000000000-mapping.dmp
  • memory/2140-30-0x0000000006550000-0x0000000006551000-memory.dmp
    Filesize

    4KB

  • memory/2140-31-0x0000000005EB0000-0x0000000005EB1000-memory.dmp
    Filesize

    4KB

  • memory/2140-19-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/2140-20-0x00000000004375FE-mapping.dmp
  • memory/2140-28-0x0000000005730000-0x0000000005731000-memory.dmp
    Filesize

    4KB

  • memory/2140-22-0x0000000073A30000-0x000000007411E000-memory.dmp
    Filesize

    6.9MB

  • memory/2140-26-0x00000000051B0000-0x00000000051B1000-memory.dmp
    Filesize

    4KB

  • memory/2140-27-0x0000000005350000-0x0000000005351000-memory.dmp
    Filesize

    4KB

  • memory/2836-15-0x0000000000000000-mapping.dmp
  • memory/3140-9-0x0000000000000000-mapping.dmp
  • memory/4004-13-0x0000000000000000-mapping.dmp