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
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-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 behavioral1/memory/1936-2-0x00000000024C0000-0x00000000025DB000-memory.dmp family_djvu behavioral1/memory/4540-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4540-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4540-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4540-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4540-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4552-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4552-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-43-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-44-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-41-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-45-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-319-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3240-320-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Renames multiple (136) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe -
Executes dropped EXE 2 IoCs
pid Process 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 4552 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3460 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\310c874e-be70-40b1-9692-254dd439bc62\\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 22 api.2ip.ua 23 api.2ip.ua 33 api.2ip.ua 45 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1936 set thread context of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 4940 set thread context of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4072 set thread context of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101 -
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 4540 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 4540 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 3240 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 3240 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 4552 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 4552 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 3240 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 3240 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe -
Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 1936 wrote to memory of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 1936 wrote to memory of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 1936 wrote to memory of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 1936 wrote to memory of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 1936 wrote to memory of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 1936 wrote to memory of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 1936 wrote to memory of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 1936 wrote to memory of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 1936 wrote to memory of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 1936 wrote to memory of 4540 1936 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 85 PID 4540 wrote to memory of 3460 4540 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 90 PID 4540 wrote to memory of 3460 4540 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 90 PID 4540 wrote to memory of 3460 4540 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 90 PID 4540 wrote to memory of 4940 4540 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 4540 wrote to memory of 4940 4540 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 4540 wrote to memory of 4940 4540 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 91 PID 4940 wrote to memory of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4940 wrote to memory of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4940 wrote to memory of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4940 wrote to memory of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4940 wrote to memory of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4940 wrote to memory of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4940 wrote to memory of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4940 wrote to memory of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4940 wrote to memory of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4940 wrote to memory of 3240 4940 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 96 PID 4072 wrote to memory of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101 PID 4072 wrote to memory of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101 PID 4072 wrote to memory of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101 PID 4072 wrote to memory of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101 PID 4072 wrote to memory of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101 PID 4072 wrote to memory of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101 PID 4072 wrote to memory of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101 PID 4072 wrote to memory of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101 PID 4072 wrote to memory of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101 PID 4072 wrote to memory of 4552 4072 2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe 101
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:1936 -
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:4540 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\310c874e-be70-40b1-9692-254dd439bc62" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3460
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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:4940 -
C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3240
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C:\Users\Admin\AppData\Local\310c874e-be70-40b1-9692-254dd439bc62\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exeC:\Users\Admin\AppData\Local\310c874e-be70-40b1-9692-254dd439bc62\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe --Task1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4072 -
C:\Users\Admin\AppData\Local\310c874e-be70-40b1-9692-254dd439bc62\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exeC:\Users\Admin\AppData\Local\310c874e-be70-40b1-9692-254dd439bc62\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe --Task2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4552
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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
MD542371dc795e5a5e1fb69536879ae68b7
SHA1028a8b465a389bc22de95e69248b46fbf36d6918
SHA256f5ff2c19facb0b3998af801657e563bcd5ae4361f9682b644daef9c6a0468bc9
SHA512cf7d0e2c82a656a7a62400a8bd1e180bb7839fc061dd3dcab8a750632fad2152aaddfc04a627661936a0f9a39f3f628d0cea06c629fc4d6f17d848114485a483
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5f9df384b8938e2996707b46f6b748053
SHA17511ffda61be7e665719ee9921728bc6aa252901
SHA256b05627452469c6ba22eca9065cbb79f9dfef2dfead9912133205dcaac21f4e8d
SHA512fa8e551dc40be30cb267b77d934721170f94552d63a030f7a22fb2dfcdc5363a8075a5a16cefb23fb92bcfc2c8b1281cff18510747e791c0c24651b6e9cfec3e
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C:\Users\Admin\AppData\Local\310c874e-be70-40b1-9692-254dd439bc62\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
Filesize732KB
MD5cc552b395d413f2aa065846c3e01fa9c
SHA1eaea89d0ee044e537e224c6e128e54ca4447e7a2
SHA2562bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff
SHA51255435dcc2813f6242cca6c444c2288676de691c31f89c4f6bb01775e5f8edd91d848d359054eff5d37e7bd96eb1679c74f9be3b7503e20e6f7b670ca7059a348