Analysis

  • max time kernel
    122s
  • max time network
    111s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    23-02-2021 12:52

General

  • Target

    Product List.exe

  • Size

    564KB

  • MD5

    df1a8e7ffa630db4a9fa38abaec4c0d2

  • SHA1

    19077607d6f6951499783faec6f1722cb9b2c077

  • SHA256

    8174806d6bbe5f5c713a2a860c36b22d3efe8c7effeb0284bb23de5a9fe68d26

  • SHA512

    7e7c2e8d94afae614291a9add08ee21ec1d0045ed30f0912a1572aa0d4090a214de0ac669cdb0f87a7bba35e9ca82fd5aaabe88871c1f5567ba2c3fb26262973

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    at.engineering
  • Port:
    587
  • Username:
    kristle@at.engineering
  • Password:
    ATE@2019

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Product List.exe
    "C:\Users\Admin\AppData\Local\Temp\Product List.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oObXLwwKgq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1E13.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2540
    • C:\Users\Admin\AppData\Local\Temp\Product List.exe
      "C:\Users\Admin\AppData\Local\Temp\Product List.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3524

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Replay Monitor

Loading Replay Monitor...

Downloads

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

    5ce36f0c4d9568839c224ffaa10d5441

    SHA1

    69c0cdded0b415091641c3fbf64b7fbd7e285e47

    SHA256

    c93c5a9fdaa44aeb7f25c89abed40a1ca6432bf3ea840e2820388bef68cd116a

    SHA512

    a6ef350d4f36f35b42ce0b8a4df83f17fb0a4f66dcfa32617b22e642168291bede3b612969e0eec293d7ca1ba0aef7a05c31823bd41821e0880b609f280b0b83

  • C:\Users\Admin\AppData\Local\Temp\tmp1E13.tmp
    MD5

    b6cc8304cce487b99c9bd95886f9a6d3

    SHA1

    6edce2f5f9e27d002ade410d02916abd78234f41

    SHA256

    4ddd66f7648206b177c5d34156d9e1590a2a77088607756061fa02f2d2d5a716

    SHA512

    c8250aa6bc61caf4536f90482d2f8ca57f51469704187ff58ab5f61fdcce8eab19ea4594f2ebd701979dadbefd86fc8a7c21ae130049a4e288c031efaac2a9a4

  • memory/1628-7-0x00000000059A0000-0x00000000059A1000-memory.dmp
    Filesize

    4KB

  • memory/1628-3-0x0000000000F50000-0x0000000000F51000-memory.dmp
    Filesize

    4KB

  • memory/1628-2-0x0000000073840000-0x0000000073F2E000-memory.dmp
    Filesize

    6.9MB

  • memory/1628-8-0x0000000005B90000-0x0000000005B91000-memory.dmp
    Filesize

    4KB

  • memory/1628-9-0x00000000058B0000-0x00000000058B1000-memory.dmp
    Filesize

    4KB

  • memory/1628-10-0x0000000005A40000-0x0000000005A41000-memory.dmp
    Filesize

    4KB

  • memory/1628-11-0x0000000005B00000-0x0000000005B03000-memory.dmp
    Filesize

    12KB

  • memory/1628-12-0x00000000017C0000-0x000000000181E000-memory.dmp
    Filesize

    376KB

  • memory/1628-13-0x0000000007700000-0x0000000007701000-memory.dmp
    Filesize

    4KB

  • memory/1628-6-0x0000000005E00000-0x0000000005E01000-memory.dmp
    Filesize

    4KB

  • memory/1628-5-0x00000000057C0000-0x00000000057C1000-memory.dmp
    Filesize

    4KB

  • memory/2540-14-0x0000000000000000-mapping.dmp
  • memory/3524-16-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/3524-17-0x00000000004375EE-mapping.dmp
  • memory/3524-19-0x0000000073840000-0x0000000073F2E000-memory.dmp
    Filesize

    6.9MB

  • memory/3524-24-0x00000000057B0000-0x00000000057B1000-memory.dmp
    Filesize

    4KB

  • memory/3524-25-0x0000000005B10000-0x0000000005B11000-memory.dmp
    Filesize

    4KB