Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-08-2024 08:13

General

  • Target

    screensaver.exe

  • Size

    40KB

  • MD5

    532f554a589dcb3b7adbfb1f2792ff35

  • SHA1

    0bc817dc4f4f7350afc7b66e87d72f8376e3af58

  • SHA256

    1c8cc063b64f9c4f5beb55f64cf19efb96e2e9d592c221366ec9ceafc4f9c545

  • SHA512

    d513e4d630cd81e0bc22f8131d4cbe521847845e2f129ba961b1f83e97216af5a21a0e8a77c27fdfe115104901a06b7b56294f7fe52f1f6854e8e1dc3c57c5b1

  • SSDEEP

    768:v9aG+ZAGcowW/A1rAmhNdATtF5PG9IhoOwhk3IEJ:vwAL0A1MEApFo9IGOwahJ

Malware Config

Extracted

Family

xworm

Version

5.0

C2

memorialwords.xyz:4444

Mutex

0FDfqtSCPc6omfwK

Attributes
  • Install_directory

    %AppData%

  • install_file

    Adobe\Reader\updater.exe

aes.plain

Extracted

Family

redline

Botnet

xclient

C2

memorialwords.xyz:6666

Signatures

  • Detect Xworm Payload 2 IoCs
  • RedLine

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

  • RedLine payload 2 IoCs
  • SectopRAT

    SectopRAT is a remote access trojan first seen in November 2019.

  • SectopRAT payload 2 IoCs
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 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 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\screensaver.exe
    "C:\Users\Admin\AppData\Local\Temp\screensaver.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3432
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "updater" /tr "C:\Users\Admin\AppData\Roaming\Adobe\Reader\updater.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1820
    • C:\Users\Admin\AppData\Local\Temp\ejzkxl.exe
      "C:\Users\Admin\AppData\Local\Temp\ejzkxl.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3472
  • C:\Users\Admin\AppData\Roaming\Adobe\Reader\updater.exe
    C:\Users\Admin\AppData\Roaming\Adobe\Reader\updater.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1108
  • C:\Users\Admin\AppData\Roaming\Adobe\Reader\updater.exe
    C:\Users\Admin\AppData\Roaming\Adobe\Reader\updater.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:980
  • C:\Users\Admin\AppData\Roaming\Adobe\Reader\updater.exe
    C:\Users\Admin\AppData\Roaming\Adobe\Reader\updater.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

  • C:\Users\Admin\AppData\Local\Temp\ejzkxl.exe

    Filesize

    95KB

    MD5

    efbdc64139ab0861a5714b87bec21240

    SHA1

    e68e6811f863e493c2a7104f50513fb0665737ea

    SHA256

    47198e417630b385a84105464bc155cc8596318a4f4c6c169347f1f28098a8e7

    SHA512

    6c1229324b3aca049d5167490348bdb83d59759ceee8678ef88735829e0d861bb552addcada1ddf1368f325d06d6db91dd13e61d05531cc4e09a292068ad066c

  • C:\Users\Admin\AppData\Local\Temp\tmp148E.tmp

    Filesize

    40KB

    MD5

    a182561a527f929489bf4b8f74f65cd7

    SHA1

    8cd6866594759711ea1836e86a5b7ca64ee8911f

    SHA256

    42aad7886965428a941508b776a666a4450eb658cb90e80fae1e7457fc71f914

    SHA512

    9bc3bf5a82f6f057e873adebd5b7a4c64adef966537ab9c565fe7c4bb3582e2e485ff993d5ab8a6002363231958fabd0933b48811371b8c155eaa74592b66558

  • C:\Users\Admin\AppData\Local\Temp\tmp14E2.tmp

    Filesize

    114KB

    MD5

    35fb57f056b0f47185c5dfb9a0939dba

    SHA1

    7c1b0bbbb77dbe46286078bca427202d494a5d36

    SHA256

    1dc436687ed65d9f2fcda9a68a812346f56f566f7671cbe1be0beaa157045294

    SHA512

    531351adffddc5a9c8c9d1fcba531d85747be0927156bae79106114b4bdc3f2fd2570c97bbfcec09265dcc87ed286655f2ab15fb3c7af0ad638a67a738f504c7

  • C:\Users\Admin\AppData\Local\Temp\tmp150D.tmp

    Filesize

    48KB

    MD5

    349e6eb110e34a08924d92f6b334801d

    SHA1

    bdfb289daff51890cc71697b6322aa4b35ec9169

    SHA256

    c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

    SHA512

    2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

  • C:\Users\Admin\AppData\Local\Temp\tmp1513.tmp

    Filesize

    20KB

    MD5

    49693267e0adbcd119f9f5e02adf3a80

    SHA1

    3ba3d7f89b8ad195ca82c92737e960e1f2b349df

    SHA256

    d76e7512e496b7c8d9fcd3010a55e2e566881dc6dacaf0343652a4915d47829f

    SHA512

    b4b9fcecf8d277bb0ccbb25e08f3559e3fc519d85d8761d8ad5bca983d04eb55a20d3b742b15b9b31a7c9187da40ad5c48baa7a54664cae4c40aa253165cbaa2

  • C:\Users\Admin\AppData\Local\Temp\tmp1529.tmp

    Filesize

    116KB

    MD5

    f70aa3fa04f0536280f872ad17973c3d

    SHA1

    50a7b889329a92de1b272d0ecf5fce87395d3123

    SHA256

    8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

    SHA512

    30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84

  • C:\Users\Admin\AppData\Local\Temp\tmp1544.tmp

    Filesize

    96KB

    MD5

    40f3eb83cc9d4cdb0ad82bd5ff2fb824

    SHA1

    d6582ba879235049134fa9a351ca8f0f785d8835

    SHA256

    cdd772b00ae53d4050150552b67028b7344bb1d345bceb495151cc969c27a0a0

    SHA512

    cdd4dbf0b1ba73464cd7c5008dc05458862e5f608e336b53638a14965becd4781cdea595fd6bd18d0bf402dccffd719da292a6ce67d359527b4691dc6d6d4cc2

  • C:\Users\Admin\AppData\Roaming\Adobe\Reader\updater.exe

    Filesize

    40KB

    MD5

    532f554a589dcb3b7adbfb1f2792ff35

    SHA1

    0bc817dc4f4f7350afc7b66e87d72f8376e3af58

    SHA256

    1c8cc063b64f9c4f5beb55f64cf19efb96e2e9d592c221366ec9ceafc4f9c545

    SHA512

    d513e4d630cd81e0bc22f8131d4cbe521847845e2f129ba961b1f83e97216af5a21a0e8a77c27fdfe115104901a06b7b56294f7fe52f1f6854e8e1dc3c57c5b1

  • memory/3432-267-0x000000001E420000-0x000000001E442000-memory.dmp

    Filesize

    136KB

  • memory/3432-228-0x000000001E2D0000-0x000000001E3EE000-memory.dmp

    Filesize

    1.1MB

  • memory/3432-0-0x00007FF82AA93000-0x00007FF82AA95000-memory.dmp

    Filesize

    8KB

  • memory/3432-22-0x00007FF82AA90000-0x00007FF82B551000-memory.dmp

    Filesize

    10.8MB

  • memory/3432-5-0x00007FF82AA93000-0x00007FF82AA95000-memory.dmp

    Filesize

    8KB

  • memory/3432-2-0x00007FF82AA90000-0x00007FF82B551000-memory.dmp

    Filesize

    10.8MB

  • memory/3432-1-0x0000000000A50000-0x0000000000A60000-memory.dmp

    Filesize

    64KB

  • memory/3472-19-0x0000000005490000-0x00000000054A2000-memory.dmp

    Filesize

    72KB

  • memory/3472-186-0x0000000006D70000-0x0000000006DD6000-memory.dmp

    Filesize

    408KB

  • memory/3472-31-0x0000000006CD0000-0x0000000006D62000-memory.dmp

    Filesize

    584KB

  • memory/3472-29-0x0000000007160000-0x000000000768C000-memory.dmp

    Filesize

    5.2MB

  • memory/3472-28-0x0000000006A60000-0x0000000006C22000-memory.dmp

    Filesize

    1.8MB

  • memory/3472-24-0x0000000005780000-0x000000000588A000-memory.dmp

    Filesize

    1.0MB

  • memory/3472-23-0x0000000075230000-0x00000000759E0000-memory.dmp

    Filesize

    7.7MB

  • memory/3472-21-0x0000000005530000-0x000000000557C000-memory.dmp

    Filesize

    304KB

  • memory/3472-20-0x00000000054F0000-0x000000000552C000-memory.dmp

    Filesize

    240KB

  • memory/3472-30-0x0000000007C40000-0x00000000081E4000-memory.dmp

    Filesize

    5.6MB

  • memory/3472-226-0x0000000007810000-0x0000000007886000-memory.dmp

    Filesize

    472KB

  • memory/3472-227-0x0000000007890000-0x00000000078AE000-memory.dmp

    Filesize

    120KB

  • memory/3472-18-0x0000000005A90000-0x00000000060A8000-memory.dmp

    Filesize

    6.1MB

  • memory/3472-17-0x0000000000AB0000-0x0000000000ACE000-memory.dmp

    Filesize

    120KB

  • memory/3472-268-0x000000007523E000-0x000000007523F000-memory.dmp

    Filesize

    4KB

  • memory/3472-269-0x0000000075230000-0x00000000759E0000-memory.dmp

    Filesize

    7.7MB

  • memory/3472-16-0x000000007523E000-0x000000007523F000-memory.dmp

    Filesize

    4KB