Resubmissions
12/05/2024, 21:30
240512-1cjvlsbc69 1012/05/2024, 21:24
240512-z9hs5sgb3t 1012/05/2024, 19:58
240512-yqasragh24 10Analysis
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max time kernel
147s -
max time network
126s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
12/05/2024, 19:58
Static task
static1
Behavioral task
behavioral1
Sample
2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
Resource
win11-20240426-en
General
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Target
2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
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Size
732KB
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MD5
cc552b395d413f2aa065846c3e01fa9c
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SHA1
eaea89d0ee044e537e224c6e128e54ca4447e7a2
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SHA256
2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff
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SHA512
55435dcc2813f6242cca6c444c2288676de691c31f89c4f6bb01775e5f8edd91d848d359054eff5d37e7bd96eb1679c74f9be3b7503e20e6f7b670ca7059a348
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SSDEEP
12288:9GBVPi9/6zy/CfGymlA8oCrFgAW/7pI1fLd7HAdf5RT0IyD:9G+6z8VFr+Aq78fROw
Malware Config
Extracted
djvu
http://cajgtus.com/raud/get.php
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extension
.paaa
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offline_id
QpSpHegISEXzDsMT78wU4MUmX8Ptl2rkBOQjG2t1
- payload_url
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ransomnote
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Signatures
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Detected Djvu ransomware 21 IoCs
resource yara_rule behavioral2/memory/1808-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1808-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4152-4-0x00000000025B0000-0x00000000026CB000-memory.dmp family_djvu behavioral2/memory/1808-2-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1808-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1808-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-26-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1380-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1380-40-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-43-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-45-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-47-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-367-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2024-368-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Renames multiple (159) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE 2 IoCs
pid Process 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 1380 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1636 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1f09a217-c941-40ae-bbce-f097b1003618\\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 1 api.2ip.ua 2 api.2ip.ua 8 api.2ip.ua 12 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4152 set thread context of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 1096 set thread context of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 3008 set thread context of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 1808 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 1808 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 2024 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 2024 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 1380 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 1380 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 2024 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 2024 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe -
Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 4152 wrote to memory of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 4152 wrote to memory of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 4152 wrote to memory of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 4152 wrote to memory of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 4152 wrote to memory of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 4152 wrote to memory of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 4152 wrote to memory of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 4152 wrote to memory of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 4152 wrote to memory of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 4152 wrote to memory of 1808 4152 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 81 PID 1808 wrote to memory of 1636 1808 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 82 PID 1808 wrote to memory of 1636 1808 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 82 PID 1808 wrote to memory of 1636 1808 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 82 PID 1808 wrote to memory of 1096 1808 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 83 PID 1808 wrote to memory of 1096 1808 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 83 PID 1808 wrote to memory of 1096 1808 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 83 PID 1096 wrote to memory of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 1096 wrote to memory of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 1096 wrote to memory of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 1096 wrote to memory of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 1096 wrote to memory of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 1096 wrote to memory of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 1096 wrote to memory of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 1096 wrote to memory of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 1096 wrote to memory of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 1096 wrote to memory of 2024 1096 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 86 PID 3008 wrote to memory of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 3008 wrote to memory of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 3008 wrote to memory of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 3008 wrote to memory of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 3008 wrote to memory of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 3008 wrote to memory of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 3008 wrote to memory of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 3008 wrote to memory of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 3008 wrote to memory of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88 PID 3008 wrote to memory of 1380 3008 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 88
Processes
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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:4152 -
C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1808 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1636
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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:1096 -
C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2024
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C:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exeC:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe --Task1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3008 -
C:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exeC:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe --Task2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1380
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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
MD584721cd35068ddfc92aa0a4c829fbd2a
SHA171d7e227e0f3fcbb585598d0f3757a8935b748ce
SHA256bf8250097eb58e963c7cd636093d2a332647af517ad22ddebe1765703b8dd199
SHA512f08b89715c28ae36927316d6fca1716dbd9e935edf9d7e979586c4e4610fc29c83514e2385dbf43e7227f8275603c5cbd85c2a098be6ada95aee1a24c5e23dfc
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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
MD562625d7e9e73d1876539722e5f4234c9
SHA1fe3626e4831d5335e0a190e3aba17a50eb56df87
SHA2563735590445920e20ce6ba95f2c3ffd8a856afc2485eba3ec0d46122ae96ddf91
SHA512bb7b685f59af6b0ababd83decfbc9a771efa6ec2fad65312b5c9311ea7727dd9a9fa391f31c0409ae63584d69887d186c7a57e04abaab7420076650e2b04f5aa
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD52998971f6d94aa0786b268a35d0ce451
SHA18bc0c7e3f7f9e9ba5d134abe90cbcc30362d9a80
SHA2568811180e4da8fe188b3b1e9b8ec9ae6ddcd07d7a9175e490afde51aa6107bd4a
SHA512eb4dcdcf1f6ff95b0a201bcd36fb7446ec7221bc43a7323aa210fbacb3db01698eed1c18fbe4cc1d79dd68995e3718c6789597610ccb7010222d2592de80ca5b
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C:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
Filesize732KB
MD5cc552b395d413f2aa065846c3e01fa9c
SHA1eaea89d0ee044e537e224c6e128e54ca4447e7a2
SHA2562bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff
SHA51255435dcc2813f6242cca6c444c2288676de691c31f89c4f6bb01775e5f8edd91d848d359054eff5d37e7bd96eb1679c74f9be3b7503e20e6f7b670ca7059a348