Analysis
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max time kernel
146s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
21-05-2024 23:21
Static task
static1
Behavioral task
behavioral1
Sample
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
Resource
win11-20240508-en
General
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Target
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
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Size
806KB
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MD5
f47c11ca7e97297d5bdbb85910a2f9f2
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SHA1
8d5d7e9d38bf7dc9c1510aa656a9468e289a80ba
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SHA256
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4
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SHA512
5954c8ebc830da9e2f83830ec991d4118de2e5c03287b4e4c7cf536932fc5385cd2ffa963c95c033cf88addcdf77a941b87e234fb7be496ffb5f435d01a026dc
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SSDEEP
12288:qaCXOY0rS3t0QWRQdxyj+pqi3PwzAFrag+5bOm5KiNUJpTZ:9C+YeSvIQdtRPvNagA/FNGt
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.vepi
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
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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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0871PsawqS
Signatures
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Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral2/memory/760-2-0x0000000004290000-0x00000000043AB000-memory.dmp family_djvu behavioral2/memory/2464-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2464-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2464-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2464-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2464-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3392-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3392-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3392-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3392-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3392-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3392-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3392-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3392-40-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3392-41-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f4aacaef-38c3-462b-b575-fc68d4f06b00\\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe\" --AutoStart" 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 2 api.2ip.ua 6 api.2ip.ua 1 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exedescription pid process target process PID 760 set thread context of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 set thread context of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exepid process 2464 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 2464 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 3392 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 3392 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exedescription pid process target process PID 760 wrote to memory of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 760 wrote to memory of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 760 wrote to memory of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 760 wrote to memory of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 760 wrote to memory of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 760 wrote to memory of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 760 wrote to memory of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 760 wrote to memory of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 760 wrote to memory of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 760 wrote to memory of 2464 760 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2464 wrote to memory of 5044 2464 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe icacls.exe PID 2464 wrote to memory of 5044 2464 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe icacls.exe PID 2464 wrote to memory of 5044 2464 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe icacls.exe PID 2464 wrote to memory of 2296 2464 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2464 wrote to memory of 2296 2464 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2464 wrote to memory of 2296 2464 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 wrote to memory of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 wrote to memory of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 wrote to memory of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 wrote to memory of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 wrote to memory of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 wrote to memory of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 wrote to memory of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 wrote to memory of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 wrote to memory of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2296 wrote to memory of 3392 2296 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:760 -
C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2464 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\f4aacaef-38c3-462b-b575-fc68d4f06b00" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:5044 -
C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2296 -
C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3392
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5a1d955617a4d146e70544d0d9a0390ca
SHA15ffdc4453b23e24a7cb0e634b26864c169f5257b
SHA2568dbff2c0018158256912d87dd495a68c351303a319f50f204a930317e867aeb3
SHA5120bffbc27638b12cc04f335de8c4f3c74df01ae55b56f389f8d046d797b4c62d31bbff057ea75ce32f67cdd3b878fd0aad3eb62e983f814296e1b94de3c6ba810
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD5b083b6155ba664106a544a7b97589fbc
SHA13dfe36da7c4befa1707c5d92014d3b89f4690c0d
SHA25613f4acfb454144dcc5ef9f61db3710b22fec54c071a1ddd7fbc7e68264851c59
SHA5128bfb7d2ed3e92009f292c6f5a2cd8bf9264eba3280b1e7d0477495a4b435785335f4f02034671aafd190590e90455a71ca65983fefd83d5055be56791d2fee65
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5b7857e37b7600fe6b4d458ad10556918
SHA1830a3fb30dc3bec25c33d62b792e1f2fd817f844
SHA256eb5e0e20f7f5ecdba741bd7710bd152c4e31dd0948cf320174f8fb028161342b
SHA512518da64c33882496e97eff6c1b0b351cad011880d7421f437a664b6307aa9faf106cc77816458da0ec728378d61b3d21363772936ca324651cc9ac0d71dceafb
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C:\Users\Admin\AppData\Local\f4aacaef-38c3-462b-b575-fc68d4f06b00\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
Filesize806KB
MD5f47c11ca7e97297d5bdbb85910a2f9f2
SHA18d5d7e9d38bf7dc9c1510aa656a9468e289a80ba
SHA2561e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4
SHA5125954c8ebc830da9e2f83830ec991d4118de2e5c03287b4e4c7cf536932fc5385cd2ffa963c95c033cf88addcdf77a941b87e234fb7be496ffb5f435d01a026dc