Resubmissions
12/05/2024, 21:30
240512-1cjvlsbc691012/05/2024, 21:24
240512-z9hs5sgb3t1012/05/2024, 19:58
240512-yqasragh2410Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
12/05/2024, 21:30
Static task
static1
Behavioral task
behavioral1
Sample
2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
Resource
win10v2004-20240508-en
General
- Target 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
- Size 732KB
- Sample240512-1cjvlsbc69
- SHA256 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff
- MD5 cc552b395d413f2aa065846c3e01fa9c
- SHA1 eaea89d0ee044e537e224c6e128e54ca4447e7a2
- SHA512 55435dcc2813f6242cca6c444c2288676de691c31f89c4f6bb01775e5f8edd91d848d359054eff5d37e7bd96eb1679c74f9be3b7503e20e6f7b670ca7059a348
- SSDEEP 12288:9GBVPi9/6zy/CfGymlA8oCrFgAW/7pI1fLd7HAdf5RT0IyD:9G+6z8VFr+Aq78fROw
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
djvu
-
http://cajgtus.com/raud/get.php
-
extension
.paaa
-
offline_id
QpSpHegISEXzDsMT78wU4MUmX8Ptl2rkBOQjG2t1
- payload_url
-
ransomnote
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Signatures
- Detected Djvu ransomware 21 IoCs
resource yara_rule behavioral1/memory/4724-2-0x0000000002500000-0x000000000261B000-memory.dmp family_djvu behavioral1/memory/2908-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2908-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2908-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2908-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2908-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4528-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4528-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-41-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-43-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-44-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-45-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-345-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2868-346-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu - Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Renames multiple (149) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
- 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe - Executes dropped EXE 2 IoCs
pid Process 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 4528 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 1532 icacls.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d7913726-afed-42a8-b1eb-94f490c5eb8f\\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe\" --AutoStart" 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe - Looks up external IP address via web service 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 13 api.2ip.ua 14 api.2ip.ua 19 api.2ip.ua 25 api.2ip.ua - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4724 set thread context of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 908 set thread context of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 2572 set thread context of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 2908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 2908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 2868 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 2868 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 4528 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 4528 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 2868 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 2868 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe - Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 4724 wrote to memory of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 4724 wrote to memory of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 4724 wrote to memory of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 4724 wrote to memory of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 4724 wrote to memory of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 4724 wrote to memory of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 4724 wrote to memory of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 4724 wrote to memory of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 4724 wrote to memory of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 4724 wrote to memory of 2908 4724 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 87 PID 2908 wrote to memory of 1532 2908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 2908 wrote to memory of 1532 2908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 2908 wrote to memory of 1532 2908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 2908 wrote to memory of 908 2908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 89 PID 2908 wrote to memory of 908 2908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 89 PID 2908 wrote to memory of 908 2908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 89 PID 908 wrote to memory of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 908 wrote to memory of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 908 wrote to memory of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 908 wrote to memory of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 908 wrote to memory of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 908 wrote to memory of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 908 wrote to memory of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 908 wrote to memory of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 908 wrote to memory of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 908 wrote to memory of 2868 908 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 2572 wrote to memory of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93 PID 2572 wrote to memory of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93 PID 2572 wrote to memory of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93 PID 2572 wrote to memory of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93 PID 2572 wrote to memory of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93 PID 2572 wrote to memory of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93 PID 2572 wrote to memory of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93 PID 2572 wrote to memory of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93 PID 2572 wrote to memory of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93 PID 2572 wrote to memory of 4528 2572 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 93
Processes
-
C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4724 -
C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2908 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\d7913726-afed-42a8-b1eb-94f490c5eb8f" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1532
-
-
C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:908 -
C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2868
-
-
-
-
C:\Users\Admin\AppData\Local\d7913726-afed-42a8-b1eb-94f490c5eb8f\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exeC:\Users\Admin\AppData\Local\d7913726-afed-42a8-b1eb-94f490c5eb8f\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe --Task1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2572 -
C:\Users\Admin\AppData\Local\d7913726-afed-42a8-b1eb-94f490c5eb8f\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exeC:\Users\Admin\AppData\Local\d7913726-afed-42a8-b1eb-94f490c5eb8f\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe --Task2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4528
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
- Size 1KB
- SHA256 bf8250097eb58e963c7cd636093d2a332647af517ad22ddebe1765703b8dd199
- MD5 84721cd35068ddfc92aa0a4c829fbd2a
- SHA1 71d7e227e0f3fcbb585598d0f3757a8935b748ce
- SHA512 f08b89715c28ae36927316d6fca1716dbd9e935edf9d7e979586c4e4610fc29c83514e2385dbf43e7227f8275603c5cbd85c2a098be6ada95aee1a24c5e23dfc
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
- Size 724B
- SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
- MD5 8202a1cd02e7d69597995cabbe881a12
- SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
- SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
- Size 410B
- SHA256 68ad5b77ade91213e76a14c5b4680aa73c49708b3567ee82788f558a94bbe5b4
- MD5 bc189ed1c612f162f7af12368898aae9
- SHA1 1d553416d4e4fe2dc844f573ee3fa06feed413e0
- SHA512 a5f903909fec07fd2ea671addcc374c8a56a996aa79b161ff530039be32e04dfa343f3fe727c405388801ca5de3d8225b1e889308ebf885227c43d82dbee920e
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
- Size 392B
- SHA256 def77efe8d2c37ba3d4932ebedc5db15ff1b80cd056025e53ca7e0a366b52410
- MD5 130244916cb07e2559f328e24593ad12
- SHA1 567c49dff7aa73ef4c3a1a3d23095541f9e4c3f1
- SHA512 1a9da49853352235940ba58b323e1499b17ead34f4f8cb4eb7ad6e694ee5c3274b84ee58a18a79a64105b42b6612456403979c211dcc040841b4ecb0eabd0a81
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\d7913726-afed-42a8-b1eb-94f490c5eb8f\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
- Size 732KB
- SHA256 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff
- MD5 cc552b395d413f2aa065846c3e01fa9c
- SHA1 eaea89d0ee044e537e224c6e128e54ca4447e7a2
- SHA512 55435dcc2813f6242cca6c444c2288676de691c31f89c4f6bb01775e5f8edd91d848d359054eff5d37e7bd96eb1679c74f9be3b7503e20e6f7b670ca7059a348
- SSDEEP 12288:9GBVPi9/6zy/CfGymlA8oCrFgAW/7pI1fLd7HAdf5RT0IyD:9G+6z8VFr+Aq78fROw
- MD5 SHA1 SHA512 SSDEEP