Analysis
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max time kernel
143s -
max time network
125s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
15/04/2024, 15:31
Static task
static1
Behavioral task
behavioral1
Sample
2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe
Resource
win11-20240412-en
General
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Target
2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe
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Size
803KB
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MD5
db5427457fb2592b4b7b630ceae0193e
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SHA1
8a8a4506975b1f11bf2047cc9d43c72370e7fb28
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SHA256
2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38
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SHA512
a686d28e056f831042ffa906e4882107d2f5b170b61d00fc2e1f39cac4ab51cf4c7645f340bfb622d28ae934a8aed366ef715f5b07143acf846d9a5639cb57b8
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SSDEEP
12288:AhqOckzti/cE1G+ikn/YB13h732Zwx2kkOIeSbRm/o0g6cbJNQZFl:Ahq1G+PnQBHnx2kc3bR2y6szQZF
Malware Config
Extracted
djvu
http://sajdfue.com/test1/get.php
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extension
.uajs
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offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/2412-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2412-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2412-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1148-2-0x0000000004C90000-0x0000000004DAB000-memory.dmp family_djvu behavioral2/memory/2412-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2412-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2848-39-0x0000000000400000-0x0000000000537000-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
pid Process 4980 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-834482027-582050234-2368284635-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7c547e90-b8cc-49aa-b57e-068db3f191b5\\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe\" --AutoStart" 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.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 1 api.2ip.ua 2 api.2ip.ua 8 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1148 set thread context of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 3368 set thread context of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2412 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 2412 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 2848 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 2848 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 1148 wrote to memory of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 1148 wrote to memory of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 1148 wrote to memory of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 1148 wrote to memory of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 1148 wrote to memory of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 1148 wrote to memory of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 1148 wrote to memory of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 1148 wrote to memory of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 1148 wrote to memory of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 1148 wrote to memory of 2412 1148 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 77 PID 2412 wrote to memory of 4980 2412 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 78 PID 2412 wrote to memory of 4980 2412 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 78 PID 2412 wrote to memory of 4980 2412 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 78 PID 2412 wrote to memory of 3368 2412 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 79 PID 2412 wrote to memory of 3368 2412 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 79 PID 2412 wrote to memory of 3368 2412 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 79 PID 3368 wrote to memory of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82 PID 3368 wrote to memory of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82 PID 3368 wrote to memory of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82 PID 3368 wrote to memory of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82 PID 3368 wrote to memory of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82 PID 3368 wrote to memory of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82 PID 3368 wrote to memory of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82 PID 3368 wrote to memory of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82 PID 3368 wrote to memory of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82 PID 3368 wrote to memory of 2848 3368 2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe"C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1148 -
C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe"C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2412 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\7c547e90-b8cc-49aa-b57e-068db3f191b5" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4980
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C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe"C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3368 -
C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe"C:\Users\Admin\AppData\Local\Temp\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2848
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5f741810cb830974aebab5f43eb80bc43
SHA11019ffd11ba07f662659b7f244d2743b4b1562c3
SHA25620c4d592f763227cd6ed7fc812ae9d65edd6e046c30a70e7c694c579d9f1580a
SHA512607ca542510b2a90fbade08569e449fdf35673dc4f045c4ca61982666fe2dd694d265835ebe2d90146dfcecedc7f229804c8e235d8eb9ca36f761064522539f4
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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
MD5af20bb94195d3d72ac5c6b441950a756
SHA1d88f37de509a4d6cdd50053f5f7f3961041fa0f7
SHA256c1529d29dda5c9ab6f68c35a798d5b6ed0c711e95f9427a4cf244777bcd97801
SHA5127233356267e1015cab202ad4e494e124237efb2d19d16c1525ec7bbcca43304b95114fee2d8418163e20af34364e89e8804a4bb4f20afd4c79bb386f6fb0164e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5027e8f427685e557dbe3456b2bb17fe0
SHA1c838921bfe16abcf76de697d880ac06f570ff2fd
SHA2567d6dc26ef572bb17204d1cd5259621ceee7006f84822aeacf20da2147297bef3
SHA5121caef596a26b6c1d672a2431282eab9f2919b33ce8dca96e992e852cb77f0f93f928c2ff76e233c969a459df5f42a4af43c84ed50f0b5b3fffaed9315a7919b7
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C:\Users\Admin\AppData\Local\7c547e90-b8cc-49aa-b57e-068db3f191b5\2ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38.exe
Filesize803KB
MD5db5427457fb2592b4b7b630ceae0193e
SHA18a8a4506975b1f11bf2047cc9d43c72370e7fb28
SHA2562ee7942af6d8e33fee4035fa4348f83303f31ab58f71d621889fa2bc2e724f38
SHA512a686d28e056f831042ffa906e4882107d2f5b170b61d00fc2e1f39cac4ab51cf4c7645f340bfb622d28ae934a8aed366ef715f5b07143acf846d9a5639cb57b8