Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
31/07/2026, 16:02
General
- Target ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe
- Size 721KB
- Sample260731-tgxtpswang
- SHA256 ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d
Malware Config
Extracted
-
djvu
-
http://zexeq.com/test2/get.php
-
extension
.jzie
-
offline_id
4FMaMDK6uqPZOxJj64677pqiSGF54A1Dam9zfUt1
- payload_url
-
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-TAbs6oTGSU Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0822ASdw
Signatures
- Family: Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Detected Djvu ransomware 23 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Modifies file permissions 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 1 TTPs 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of WriteProcessMemory 23 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe"C:\Users\Admin\AppData\Local\Temp\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe"C:\Users\Admin\AppData\Local\Temp\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\91a33006-beb8-47c0-85ba-c472fbcdb711" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe"C:\Users\Admin\AppData\Local\Temp\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe"C:\Users\Admin\AppData\Local\Temp\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
-
-
-
C:\Users\Admin\AppData\Local\91a33006-beb8-47c0-85ba-c472fbcdb711\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exeC:\Users\Admin\AppData\Local\91a33006-beb8-47c0-85ba-c472fbcdb711\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\91a33006-beb8-47c0-85ba-c472fbcdb711\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exeC:\Users\Admin\AppData\Local\91a33006-beb8-47c0-85ba-c472fbcdb711\ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
70825F0EABF2526E540CA0F7C268D189
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
70825F0EABF2526E540CA0F7C268D189
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d.exe
bowsakkdestx.txt
memory/840-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/840-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/840-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/840-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/840-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1096-1-0x00000000021B0000-0x0000000002252000-memory.dmp
memory/1096-2-0x0000000002260000-0x000000000237B000-memory.dmp
memory/5728-30-0x0000000000400000-0x0000000000568000-memory.dmp
memory/5728-24-0x0000000000400000-0x0000000000568000-memory.dmp
memory/5792-35-0x0000000000400000-0x0000000000568000-memory.dmp
memory/5792-31-0x0000000000400000-0x0000000000568000-memory.dmp
memory/5908-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5908-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5908-46-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-50-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-52-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-51-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-53-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-57-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-26-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-64-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-65-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-67-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-68-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-69-0x0000000000400000-0x0000000000537000-memory.dmp
memory/6104-70-0x0000000000400000-0x0000000000537000-memory.dmp