Analysis

  • max time kernel
    43s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    27-07-2021 23:03

General

  • Target

    bank account details.exe

  • Size

    1.1MB

  • MD5

    6fa33275b4f3de73faabdd5dc084f0c9

  • SHA1

    8b624a452820e2949eec05c2e16c6cb0cd685c12

  • SHA256

    54997c9767d784fc3d566238940f84541c4b614ec794aceeb84d2bb8a4104bf5

  • SHA512

    3854b0e82dae57b39d4cdbe4f82b044b08c618975878f68e2371e8de7df20c274a67187d1b02b1fcfe0153a195e6884bdba1bd23f55a0f315fe6823bb68cccbf

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.tejoofashions.com
  • Port:
    587
  • Username:
    it@tejoofashions.com
  • Password:
    OmiCron#2019

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bank account details.exe
    "C:\Users\Admin\AppData\Local\Temp\bank account details.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3904
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ArWDYnLWLZTNbv" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAF8F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2100
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:504

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

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpAF8F.tmp
    MD5

    c8a410ca267af65ef7ec13ae23514f9f

    SHA1

    d0f9753741489bba5d54e752c6f796a036c75e74

    SHA256

    47b5b87e96ef37fd991798da6cbd4e686b392bef1e2fcccf9e3f40a015560250

    SHA512

    5e8f210ae9a31387bd2ebf6354b57358f0d914301a5c766fba13ecf44753373ef34e8117c0ff70fb4baff4b66360410b87c9d9eec3d214a57b6a8b94d49b1a3e

  • memory/504-137-0x0000000005051000-0x0000000005052000-memory.dmp
    Filesize

    4KB

  • memory/504-134-0x00000000052F0000-0x00000000052F1000-memory.dmp
    Filesize

    4KB

  • memory/504-133-0x00000000051B0000-0x00000000051B1000-memory.dmp
    Filesize

    4KB

  • memory/504-132-0x0000000005050000-0x0000000005051000-memory.dmp
    Filesize

    4KB

  • memory/504-127-0x00000000004618AE-mapping.dmp
  • memory/504-126-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/2100-124-0x0000000000000000-mapping.dmp
  • memory/3904-119-0x0000000004B60000-0x000000000505E000-memory.dmp
    Filesize

    5.0MB

  • memory/3904-123-0x00000000082F0000-0x0000000008393000-memory.dmp
    Filesize

    652KB

  • memory/3904-122-0x0000000008210000-0x00000000082EF000-memory.dmp
    Filesize

    892KB

  • memory/3904-121-0x0000000006600000-0x0000000006601000-memory.dmp
    Filesize

    4KB

  • memory/3904-120-0x0000000005050000-0x0000000005052000-memory.dmp
    Filesize

    8KB

  • memory/3904-114-0x0000000000120000-0x0000000000121000-memory.dmp
    Filesize

    4KB

  • memory/3904-118-0x0000000004A70000-0x0000000004A71000-memory.dmp
    Filesize

    4KB

  • memory/3904-117-0x0000000004A90000-0x0000000004A91000-memory.dmp
    Filesize

    4KB

  • memory/3904-116-0x0000000005060000-0x0000000005061000-memory.dmp
    Filesize

    4KB