Analysis

  • max time kernel
    148s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    23-04-2021 10:19

General

  • Target

    Halkbank.exe

  • Size

    847KB

  • MD5

    2c68eca81ac03f1877bdcc6140893046

  • SHA1

    2be88a2102e51dec6441f68d0f1a16b8fe5400f9

  • SHA256

    512294ae476d17262a6fb911548683e8cacc6d30fd8bb9eea1e7c78412e51e35

  • SHA512

    85e6d10c0e56215980ee9b002d918e5db85054bef4bf444602a4c9c0877098e4f6e2042ed5855add79bbe50a39c383c4084209955f113238d35dda40adcccd53

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.ugurlumakina.com.tr
  • Port:
    587
  • Username:
    ugurlumakina@ugurlumakina.com.tr
  • Password:
    uGUR54257!

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Halkbank.exe
    "C:\Users\Admin\AppData\Local\Temp\Halkbank.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3492
    • C:\Users\Admin\AppData\Local\Temp\Halkbank.exe
      "C:\Users\Admin\AppData\Local\Temp\Halkbank.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2988

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

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

    90acfd72f14a512712b1a7380c0faf60

    SHA1

    40ba4accb8faa75887e84fb8e38d598dc8cf0f12

    SHA256

    20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

    SHA512

    29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

  • memory/2988-125-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/2988-134-0x0000000006440000-0x0000000006441000-memory.dmp
    Filesize

    4KB

  • memory/2988-133-0x0000000005BA0000-0x0000000005BA1000-memory.dmp
    Filesize

    4KB

  • memory/2988-132-0x00000000056E0000-0x0000000005BDE000-memory.dmp
    Filesize

    5.0MB

  • memory/2988-126-0x000000000043762E-mapping.dmp
  • memory/3492-119-0x0000000004D10000-0x0000000004D11000-memory.dmp
    Filesize

    4KB

  • memory/3492-122-0x00000000050A0000-0x00000000050A9000-memory.dmp
    Filesize

    36KB

  • memory/3492-123-0x0000000000B70000-0x0000000000BE8000-memory.dmp
    Filesize

    480KB

  • memory/3492-124-0x00000000098F0000-0x0000000009933000-memory.dmp
    Filesize

    268KB

  • memory/3492-121-0x0000000004E20000-0x000000000531E000-memory.dmp
    Filesize

    5.0MB

  • memory/3492-120-0x0000000005030000-0x0000000005031000-memory.dmp
    Filesize

    4KB

  • memory/3492-114-0x0000000000420000-0x0000000000421000-memory.dmp
    Filesize

    4KB

  • memory/3492-118-0x0000000004E20000-0x0000000004E21000-memory.dmp
    Filesize

    4KB

  • memory/3492-117-0x0000000005320000-0x0000000005321000-memory.dmp
    Filesize

    4KB

  • memory/3492-116-0x0000000004D80000-0x0000000004D81000-memory.dmp
    Filesize

    4KB