Analysis
-
max time kernel
144s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
25/01/2024, 04:39
Static task
static1
Behavioral task
behavioral1
Sample
73c1f532fb36af32c4bf0396e36a046c.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
73c1f532fb36af32c4bf0396e36a046c.exe
Resource
win10v2004-20231215-en
General
-
Target
73c1f532fb36af32c4bf0396e36a046c.exe
-
Size
787KB
-
MD5
73c1f532fb36af32c4bf0396e36a046c
-
SHA1
50d79516412f9f40ce0c65fef0bacc99ed16361f
-
SHA256
219371ac3b82f569f98a692a680f54aad32a7932e7f94da9d51c6a2738d59c94
-
SHA512
96d97622ae4ab607423fb7c0e9e2ed8a6f39ac4b5933cbde84d91b6a235fc291d8ff0fcf67d4a2dc1d38203432b32a226baf63832ab38c6a9ad02f53be033979
-
SSDEEP
12288:hksmHsAz1XoTtgdGigT84EbBfo2YRJ2zVGGDMgjT7BX9aokgDHkwB7yBPAi:hk9MtgdGieEbfi4JGQUokgDEwIBPA
Malware Config
Extracted
djvu
http://astdg.top/nddddhsspen6/get.php
-
extension
.moqs
-
offline_id
CatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1
-
payload_url
http://securebiz.org/dl/build2.exe
-
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-N3p42CffoV 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: 0318ewgfDd
Signatures
-
Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/384-2-0x0000000002820000-0x000000000293B000-memory.dmp family_djvu behavioral2/memory/4464-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4464-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4464-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4464-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4464-16-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5104-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
-
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation 73c1f532fb36af32c4bf0396e36a046c.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 2252 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7216289e-a0b9-4a19-bc74-ce457b88119a\\73c1f532fb36af32c4bf0396e36a046c.exe\" --AutoStart" 73c1f532fb36af32c4bf0396e36a046c.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.
flow ioc 12 api.2ip.ua 13 api.2ip.ua 20 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 384 set thread context of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 2508 set thread context of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4464 73c1f532fb36af32c4bf0396e36a046c.exe 4464 73c1f532fb36af32c4bf0396e36a046c.exe 5104 73c1f532fb36af32c4bf0396e36a046c.exe 5104 73c1f532fb36af32c4bf0396e36a046c.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 384 wrote to memory of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 384 wrote to memory of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 384 wrote to memory of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 384 wrote to memory of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 384 wrote to memory of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 384 wrote to memory of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 384 wrote to memory of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 384 wrote to memory of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 384 wrote to memory of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 384 wrote to memory of 4464 384 73c1f532fb36af32c4bf0396e36a046c.exe 89 PID 4464 wrote to memory of 2252 4464 73c1f532fb36af32c4bf0396e36a046c.exe 92 PID 4464 wrote to memory of 2252 4464 73c1f532fb36af32c4bf0396e36a046c.exe 92 PID 4464 wrote to memory of 2252 4464 73c1f532fb36af32c4bf0396e36a046c.exe 92 PID 4464 wrote to memory of 2508 4464 73c1f532fb36af32c4bf0396e36a046c.exe 94 PID 4464 wrote to memory of 2508 4464 73c1f532fb36af32c4bf0396e36a046c.exe 94 PID 4464 wrote to memory of 2508 4464 73c1f532fb36af32c4bf0396e36a046c.exe 94 PID 2508 wrote to memory of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97 PID 2508 wrote to memory of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97 PID 2508 wrote to memory of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97 PID 2508 wrote to memory of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97 PID 2508 wrote to memory of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97 PID 2508 wrote to memory of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97 PID 2508 wrote to memory of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97 PID 2508 wrote to memory of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97 PID 2508 wrote to memory of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97 PID 2508 wrote to memory of 5104 2508 73c1f532fb36af32c4bf0396e36a046c.exe 97
Processes
-
C:\Users\Admin\AppData\Local\Temp\73c1f532fb36af32c4bf0396e36a046c.exe"C:\Users\Admin\AppData\Local\Temp\73c1f532fb36af32c4bf0396e36a046c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:384 -
C:\Users\Admin\AppData\Local\Temp\73c1f532fb36af32c4bf0396e36a046c.exe"C:\Users\Admin\AppData\Local\Temp\73c1f532fb36af32c4bf0396e36a046c.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4464 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\7216289e-a0b9-4a19-bc74-ce457b88119a" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2252
-
-
C:\Users\Admin\AppData\Local\Temp\73c1f532fb36af32c4bf0396e36a046c.exe"C:\Users\Admin\AppData\Local\Temp\73c1f532fb36af32c4bf0396e36a046c.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2508 -
C:\Users\Admin\AppData\Local\Temp\73c1f532fb36af32c4bf0396e36a046c.exe"C:\Users\Admin\AppData\Local\Temp\73c1f532fb36af32c4bf0396e36a046c.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:5104
-
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5819d2f6d228f94bfebac03edbfa4bc64
SHA1257acbdf2270c5285962d10460a77f422143cc8d
SHA256e8b016b694a9c3224b6a405cf52010c03b7bc6c8948ecc8a3d9aaa39a18f6d47
SHA512b81c03ca94d21cdb106281fa478dccd390e07bd0a03d0077952041f3d1d41a671ac9a3d4c97d41d9c8f74b14214abfcaff696a10d0615b603a7a9b1a67adde67
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD5c9941d5cf26c534c228d97f0c01de1e9
SHA14548882d5a3fcaccd82656bff3234e3899dbf64f
SHA256de166b42230ec87ed09d1bdd5c4626cb2853050483bbf4a9ed094223e7a451a8
SHA512d33f57520432ad70381dfe93c129e0429e8af4845164b46aa3e51a58b23dc0b477998e9fb5d8ce6d111f983a63f185fff7573b0b3d878afbc1d35457a77261e1
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD58564bd6cfd3892d143e10503757a7bd4
SHA131a33abc47656e7a056e24d4117513332a897292
SHA256c67261ea5850439b7421d1a50ba59aae4ddc474fedfb24f0535d94c14405ca27
SHA512c85ea1ef86a36f724b2df071ad3ea025216b000be07269c89f4bf2c31a681fc92d4ad818ab8c1a43d58181ec0d2fadb3b6c0d1ac60ff7b5479a098ad9dbdf20d
-
C:\Users\Admin\AppData\Local\7216289e-a0b9-4a19-bc74-ce457b88119a\73c1f532fb36af32c4bf0396e36a046c.exe
Filesize787KB
MD573c1f532fb36af32c4bf0396e36a046c
SHA150d79516412f9f40ce0c65fef0bacc99ed16361f
SHA256219371ac3b82f569f98a692a680f54aad32a7932e7f94da9d51c6a2738d59c94
SHA51296d97622ae4ab607423fb7c0e9e2ed8a6f39ac4b5933cbde84d91b6a235fc291d8ff0fcf67d4a2dc1d38203432b32a226baf63832ab38c6a9ad02f53be033979