General

  • Target
    Batch_9.zip
  • Size 11.5MB
  • Sample241122-d54ddstney
  • SHA256 c96b41fac848211321861fcf957e5f475a950c56f9024f792e5c9584f1fbd3ef
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\#DECRYPT_MY_FILES#.html

Ransom Note
  • <html> <title>S A T U R N</title> <center> <body> <h1>S A T U R N</h1> <h4>Your documents, photos, databases, and other important files have been encrypted!</h4> <br /> To Decrypt your files follow these instructions: <br /> <div> <h4>1. Download and Install Tor Browser from <a href=https://www.torproject.org/>https://www.torproject.org/</a></h4> <br /> <h4>2. Run the browser</h4> <br /> <h4>3. In the Tor Browser, open website:</h3> <div style="background-color: #d9d9d9; margin-left: 20px; margin-right: 20px; padding-bottom: 8px; padding-left: 8px; padding-right: 8px; padding-top: 8px;"> </a><b>http://su34pwhpcafeiztt.onion</b><br/> </div> <h4>4. Follow the instructions at this website</h4> </div> </body> </center> </html> <style> html { background-color: white; font-family: Helvetica, sans-serif; } div { background-color: #f2f2f2; width: 80: %; padding: 25px; margin: 25px; overflow:hidden; } </style>

Extracted

Path
  • C:\Program Files (x86)\Common Files\Services\ReadMe.html

Ransom Note
  • <html> <head> <meta content="text/html; charset=UTF-8" http-equiv="content-type"> <title>jaff decryptor system</title> </head> <body style="background-color: rgb(102, 204, 204); color: rgb(0, 0, 0);" alink="#ee0000" link="#0000ee" vlink="#551a8b"> <div style="position: absolute; top:0; text-align:center; width:100%" > <h1 style="font-family: System; color: rgb(102, 102, 102);"><big>jaff decryptor system</big></h1> </div> <style> .center { width: 1000px; padding: 10px; margin: auto; background: #fc0; } </style> <div style="position: absolute; top:15%; left: 30%;" > <p style="border: 3px solid rgb(255, 255, 10); padding: 10px; background-color: rgb(223, 213, 209); text-align: left;"><big><big>Files are encrypted!</big></big><br> <br> <big><big>To decrypt flies you need to obtain the private key.<br> The only copy of the private key, which will allow you to decrypt your files, is located on a secret server in the Internet<br> <br> </big></big>&#10102;<big><big> You must install Tor Browser: https://www.torproject.org/download/download-easy.html.en<br> <br> </big></big>&#10103;<big><big> After instalation, run the Tor Browser and enter address: http://rktazuzi7hbln7sy.onion/<br> <br> Follow the instruction on the web-site.</big></big><br> </p> <br> <br> <center><h1><big>Your decrypt ID: 4010832920</big></h1></center> </div> </div> </body> </html>
URLs
  • http-equiv="content-type">

  • http://rktazuzi7hbln7sy.onion/<br>

Extracted

Path
  • C:\Program Files (x86)\Common Files\Services\ReadMe.txt

Ransom Note
  • jaff decryptor system Files are encrypted! To decrypt flies you need to obtain the private key. The only copy of the private key, which will allow you to decrypt your files, is located on a secret server in the Internet You must install Tor Browser: https://www.torproject.org/download/download-easy.html.en After instalation,run the Tor Browser and enter address: http://rktazuzi7hbln7sy.onion/ Follow the instruction on the web-site. Your decrypt ID: 4010832920
URLs
  • http://rktazuzi7hbln7sy.onion/

Targets

    • Target
      IQHGV07FDyQ5u7bmNAvn (2).exe
    • Size 357KB
    • SHA256 48aa0a8be374691641742a5d81503f127e9dfdc6bbb717bb1c8479a0071486d0
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      IQHGV07FDyQ5u7bmNAvn.exe
    • Size 357KB
    • SHA256 48aa0a8be374691641742a5d81503f127e9dfdc6bbb717bb1c8479a0071486d0
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      Junk)2345.eml.ViR.exe
    • Size 9KB
    • SHA256 df8b9e5d4104604e0fa339e6ff704e2957e2dc20d90c111010e67586317337aa
    • MD5 SHA1 SHA512 SSDEEP
    Score
    5/10
    • Drops file in System32 directory

    • Target
      PC Cleaner.exe
    • Size 4.4MB
    • SHA256 b46940adcfefac96db737aa663f44e31e071fb7bffc757f98d811c2d82f1d3b8
    • MD5 SHA1 SHA512 SSDEEP
    • Modifies visiblity of hidden/system files in Explorer

    • Looks for VirtualBox Guest Additions in registry

    • Adds policy Run key to start application

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Blocklisted process makes network request

    • Suspicious use of SetThreadContext

    • Target
      PC_cleaner-cleaned.exe
    • Size 337KB
    • SHA256 7de4bf9af4e80cf93c1058ebae1fadf69c9a271a44338888b7388744205e3725
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      PC_cleaner_database-cleaned.exe
    • Size 20KB
    • SHA256 3d494740cdd42d9c0a4feb3bea6e3cbc2e05affe412feab469eeebc8853332b1
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      Pizzacrypts.exe
    • Size 168KB
    • SHA256 d6818864dc9e10b15c88aca4d1e8fd971eff43572beba3001fd6c96028afd9f3
    • MD5 SHA1 SHA512 SSDEEP
    • Renames multiple (451) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Deletes itself

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Target
      Ponmsiyyks.exe
    • Size 9.5MB
    • SHA256 b05e06ab6e885de6f8646d6b9ffc8cc4aa8f285e656fd0738bb7cffb5c9d4f21
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      Rlesvxamvenagx @ZL@0ECpw@ZL@ .xml.zyklon.exe
    • Size 99KB
    • SHA256 705eb586d4296b742dfb239d508894876c207806c2f126eafec206d2d0cd3e8c
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      SATURN_RANSOM.exe
    • Size 338KB
    • SHA256 9e87f069de22ceac029a4ac56e6305d2df54227e6b0f0b3ecad52a01fbade021
    • MD5 SHA1 SHA512 SSDEEP
    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Enumerates VirtualBox registry keys

    • Looks for VirtualBox Guest Additions in registry

    • Renames multiple (155) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Checks BIOS information in registry

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

    • Deletes itself

    • Drops startup file

    • Reads user/profile data of web browsers

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

    • Sets desktop wallpaper using registry

    • Target
      ScreenCapture_Win8.MalwareScanner.exe
    • Size 137KB
    • SHA256 f9d9b397488e1bf5c37320a4bccd015fa48495fa15f5c5ce14cb65366cc2526a
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      license key.exe
    • Size 270KB
    • SHA256 c57040c2af2735aed3f84dbe838f6e142ad80631f50811c0b265bf0a5e3af91d
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    • Target
      malware.exe
    • Size 53KB
    • SHA256 e79f164ccc75a5d5c032b4c5a96d6ad7604faffb28afe77bc29b9173fa3543e4
    • MD5 SHA1 SHA512 SSDEEP
    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Adds Run key to start application

    • Modifies WinLogon

    • Target
      mamba_141.exe_.exe
    • Size 2.3MB
    • SHA256 0fa05cbe58b253b09afbb79be27953ddfd36852d0a5fb5010dfb419d7705abb5
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      mamba_152.exe_.exe
    • Size 2.3MB
    • SHA256 74336da7eb463092a5f1bca3071f96b005f52e6df5826f8b0351e10537ba0459
    • MD5 SHA1 SHA512 SSDEEP
    Score
    5/10
    • Suspicious use of SetThreadContext

    • Target
      microsoft-cleaned.exe
    • Size 337KB
    • SHA256 03f1e07d8b2eddac94f0de473100dd8f33183c0030dd275a9dfb467d99af97b7
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      msiexec.exe
    • Size 401KB
    • SHA256 f5096a51fdc054c4a217966b22f827a921d50a12436aa995d6f4180bdc4ba420
    • MD5 SHA1 SHA512 SSDEEP
    • Modifies visiblity of hidden/system files in Explorer

    • Looks for VirtualBox Guest Additions in registry

    • Adds policy Run key to start application

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

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

    • Deletes itself

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

    • Target
      nc.exe
    • Size 60KB
    • SHA256 f89ae8d431706d82bfb965b0b8f393f99aae897460ba473529256186693c2bd0
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      nd2vj1ux.exe
    • Size 140KB
    • SHA256 5a1d1e5aa09e1eff12365374044b8fc6c1da1024cdf9cc87efdef314ddd6857a
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      notes.exe
    • Size 1KB
    • SHA256 15e726d9eb37e96f5a34d910702c59e6b98eecca957292cbb0e8f2e746ccdd6e
    • MD5 SHA1 SHA512
    Score
    1/10
    • Target
      nzpuHohZGP2RNfMTp0sr (2).exe
    • Size 357KB
    • SHA256 9336c8dbbdd65d18cee1de53ee153aeeb2fd9fcf3ceafb9f251ffcc21bf7211f
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      nzpuHohZGP2RNfMTp0sr.exe
    • Size 357KB
    • SHA256 9336c8dbbdd65d18cee1de53ee153aeeb2fd9fcf3ceafb9f251ffcc21bf7211f
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      old_14b68cb9f911ce937f52ed8282ef4395f2291c0a23f14d33f731a15572834b0d.exe
    • Size 84KB
    • SHA256 14b68cb9f911ce937f52ed8282ef4395f2291c0a23f14d33f731a15572834b0d
    • MD5 SHA1 SHA512 SSDEEP
    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Looks up external IP address via web service

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

    • Target
      patched.exe
    • Size 1.3MB
    • SHA256 eaac4bcbf42384c31cc4f1e217e7becd9217647aa693e93488d2d9559127dc3f
    • MD5 SHA1 SHA512 SSDEEP
    • Renames multiple (2223) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Drops file in Drivers directory

    • Drops startup file

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

    • Target
      pclock.exe
    • Size 239KB
    • SHA256 302b437cf639368e85af4d16b2ba11707f5e94d257e5718be7f913c7162bf954
    • MD5 SHA1 SHA512 SSDEEP
    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Target
      pclock_unpack.exe
    • Size 419KB
    • SHA256 05fab5797ed3fa8ba1fbe0e0de14e5284f84506c1b5bb386638e49c3f027e75d
    • MD5 SHA1 SHA512 SSDEEP
    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Target
      pitupi20.exe
    • Size 152KB
    • SHA256 1be07198c324c9732d4e2676945ec021eeacd78775aea2100f49ca0483d3f901
    • MD5 SHA1 SHA512 SSDEEP
    • Renames multiple (4039) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Drops file in Drivers directory

    • Deletes itself

    • Reads user/profile data of web browsers

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

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

    • Target
      pozhehgxmlhobpvwlqco.exe
    • Size 56KB
    • SHA256 d2164cdbc9c78db0115f382a139ccd758f8a25ebfc5ab3e0034e7aef0fe0b6b4
    • MD5 SHA1 SHA512 SSDEEP
    Score
    7/10
    • Checks computer location settings

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

    • Target
      ransom_50.00_dol_df410f19157f591860e1633b85dfb50b.scr
    • Size 621KB
    • SHA256 f1384ff19a870f5aa718486666a14e88873d79eaea5725e3a2097b2d9fd9a320
    • MD5 SHA1 SHA512 SSDEEP
    • Renames multiple (109) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Drops startup file

    • Reads user/profile data of web browsers

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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Target
      ransomware1061911a3e0a74827a76bbd7bfe16d20.exe
    • Size 195KB
    • SHA256 74456d286d471069dee7171ce654f910722ef0ddf42e701337c2b4a1e0f5c36c
    • MD5 SHA1 SHA512 SSDEEP
    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

    • Target
      safeinf.dll
    • Size 702KB
    • SHA256 add92cb6047f2fb412dcbcb5a2d8ee7fad56091ccd6667105d977b010a33b561
    • MD5 SHA1 SHA512 SSDEEP
    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Suspicious use of SetThreadContext

    • Target
      schet1074.15.03.16.doc
    • Size 1.1MB
    • SHA256 72b14306c9f95536d03d88cf63204f70630dd9cd00664ad7f86c1d774c8508e9
    • MD5 SHA1 SHA512 SSDEEP
    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks

static1

upxxorist
Score
10/10

behavioral1

discovery
Score
3/10

behavioral2

discovery
Score
3/10

behavioral3

discovery
Score
5/10

behavioral4

discoveryevasionpersistence
Score
10/10

behavioral5

discovery
Score
3/10

behavioral6

discovery
Score
3/10

behavioral7

discoverypersistenceransomwarespywarestealerupx
Score
9/10

behavioral8

discovery
Score
3/10

behavioral9

Score
1/10

behavioral10

defense_evasiondiscoveryevasionexecutionimpactransomwarespywarestealer
Score
10/10

behavioral11

Score
1/10

behavioral12

discoverypersistence
Score
10/10

behavioral13

discoveryevasionpersistence
Score
8/10

behavioral14

Score
1/10

behavioral15

discovery
Score
5/10

behavioral16

discovery
Score
3/10

behavioral17

discoveryevasionpersistence
Score
10/10

behavioral18

Score
1/10

behavioral19

Score
1/10

behavioral20

Score
1/10

behavioral21

discovery
Score
3/10

behavioral22

discovery
Score
3/10

behavioral23

discoverypersistence
Score
7/10

behavioral24

discoverypersistenceransomwarespywarestealer
Score
9/10

behavioral25

discoverypersistenceupx
Score
7/10

behavioral26

discoverypersistence
Score
7/10

behavioral27

defense_evasiondiscoveryransomwarespywarestealer
Score
10/10

behavioral28

discovery
Score
7/10

behavioral29

discoveryransomwarespywarestealerupx
Score
9/10

behavioral30

defense_evasiondiscoveryexecutionimpactpersistenceransomware
Score
9/10

behavioral31

discoverypersistence
Score
7/10

behavioral32

discoverypersistenceupx
Score
10/10