Resubmissions

02-04-2021 10:13

210402-qmk84q731a 5

01-04-2021 07:23

210401-qmxmygyems 10

Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    01-04-2021 07:23

General

  • Target

    QFSN0331PDF.exe

  • Size

    519KB

  • MD5

    18377afa571a27e3d67024934eb425fc

  • SHA1

    72e4b926dcf352558304f42fac331b2dda61049e

  • SHA256

    edbc5c4578e139f3194afcb1ccd8627f8f966bfda05e4574d0e8dcc65b8a4dcb

  • SHA512

    7ea97d9f6bfe31288d8487386ec5d92ea9d9d7832813d40f20c49cc345c03b4caec4c2558258c7f5d895663a38aff1afe8edd70bf49ebed4dfbcb5b8a0542475

Malware Config

Extracted

Family

redline

C2

mhuncho.duckdns.org:3214

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\QFSN0331PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\QFSN0331PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:880
    • C:\Users\Admin\AppData\Local\Temp\QFSN0331PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\QFSN0331PDF.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3772

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\QFSN0331PDF.exe.log

    MD5

    90acfd72f14a512712b1a7380c0faf60

    SHA1

    40ba4accb8faa75887e84fb8e38d598dc8cf0f12

    SHA256

    20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

    SHA512

    29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

  • memory/880-9-0x0000000004D60000-0x0000000004D61000-memory.dmp

    Filesize

    4KB

  • memory/880-3-0x0000000000040000-0x0000000000041000-memory.dmp

    Filesize

    4KB

  • memory/880-11-0x0000000004A60000-0x0000000004A69000-memory.dmp

    Filesize

    36KB

  • memory/880-7-0x0000000004B50000-0x0000000004B51000-memory.dmp

    Filesize

    4KB

  • memory/880-8-0x0000000004A20000-0x0000000004A21000-memory.dmp

    Filesize

    4KB

  • memory/880-2-0x0000000073460000-0x0000000073B4E000-memory.dmp

    Filesize

    6.9MB

  • memory/880-10-0x0000000004D50000-0x0000000004D51000-memory.dmp

    Filesize

    4KB

  • memory/880-5-0x0000000004AB0000-0x0000000004AB1000-memory.dmp

    Filesize

    4KB

  • memory/880-12-0x0000000005550000-0x00000000055A8000-memory.dmp

    Filesize

    352KB

  • memory/880-6-0x0000000005050000-0x0000000005051000-memory.dmp

    Filesize

    4KB

  • memory/3772-20-0x0000000005660000-0x0000000005661000-memory.dmp

    Filesize

    4KB

  • memory/3772-23-0x0000000005CB0000-0x0000000005CB1000-memory.dmp

    Filesize

    4KB

  • memory/3772-13-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/3772-19-0x0000000005560000-0x0000000005561000-memory.dmp

    Filesize

    4KB

  • memory/3772-16-0x0000000073460000-0x0000000073B4E000-memory.dmp

    Filesize

    6.9MB

  • memory/3772-21-0x0000000005640000-0x0000000005641000-memory.dmp

    Filesize

    4KB

  • memory/3772-22-0x0000000006220000-0x0000000006221000-memory.dmp

    Filesize

    4KB

  • memory/3772-14-0x00000000004296EE-mapping.dmp

  • memory/3772-24-0x0000000005D10000-0x0000000005D11000-memory.dmp

    Filesize

    4KB

  • memory/3772-25-0x0000000005D50000-0x0000000005D51000-memory.dmp

    Filesize

    4KB

  • memory/3772-26-0x0000000005FB0000-0x0000000005FB1000-memory.dmp

    Filesize

    4KB

  • memory/3772-27-0x0000000006D40000-0x0000000006D41000-memory.dmp

    Filesize

    4KB

  • memory/3772-28-0x0000000007440000-0x0000000007441000-memory.dmp

    Filesize

    4KB

  • memory/3772-31-0x0000000007250000-0x0000000007251000-memory.dmp

    Filesize

    4KB

  • memory/3772-32-0x0000000005B00000-0x0000000005B01000-memory.dmp

    Filesize

    4KB