Analysis
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max time kernel
146s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
22-05-2024 07:20
Static task
static1
Behavioral task
behavioral1
Sample
2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe
Resource
win11-20240508-en
General
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Target
2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe
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Size
702KB
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MD5
e6ef999725d74157da2a50696d30db78
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SHA1
1c87613f9d25fc1d2cb1c53c2149c032c8622436
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SHA256
2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d
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SHA512
0219f8c142821d06cea4b717d387a3c2b84c1da1f2161bd8bcbb16ef5b79e77b9bdb3fc9d527a639d601c6aedc9ff6e1aad664bfb9e9757081958811a5ee2e11
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SSDEEP
12288:1cmDl3iejbr5hDAUM84iv4whKNjaXJXqdILvyc6J9v2Tu46uJ3/sw:1cY3Nl5XPxJKNjAcIJCv2Tu41Jj
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.vepi
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral2/memory/5008-2-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3056-4-0x0000000004AF0000-0x0000000004C0B000-memory.dmp family_djvu behavioral2/memory/5008-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5008-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5008-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5008-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/412-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/412-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/412-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/412-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/412-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/412-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/412-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/412-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/412-37-0x0000000000400000-0x0000000000537000-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
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3107365284-1576850094-161165143-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b6b277c1-fb4b-4ed4-8f0b-137351a49816\\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe\" --AutoStart" 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.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.
Processes:
flow ioc 2 api.2ip.ua 8 api.2ip.ua 1 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exedescription pid process target process PID 3056 set thread context of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 set thread context of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exepid process 5008 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 5008 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 412 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 412 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exedescription pid process target process PID 3056 wrote to memory of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3056 wrote to memory of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3056 wrote to memory of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3056 wrote to memory of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3056 wrote to memory of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3056 wrote to memory of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3056 wrote to memory of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3056 wrote to memory of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3056 wrote to memory of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3056 wrote to memory of 5008 3056 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 5008 wrote to memory of 4052 5008 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe icacls.exe PID 5008 wrote to memory of 4052 5008 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe icacls.exe PID 5008 wrote to memory of 4052 5008 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe icacls.exe PID 5008 wrote to memory of 3932 5008 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 5008 wrote to memory of 3932 5008 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 5008 wrote to memory of 3932 5008 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 wrote to memory of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 wrote to memory of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 wrote to memory of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 wrote to memory of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 wrote to memory of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 wrote to memory of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 wrote to memory of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 wrote to memory of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 wrote to memory of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe PID 3932 wrote to memory of 412 3932 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe 2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe"C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3056 -
C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe"C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5008 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\b6b277c1-fb4b-4ed4-8f0b-137351a49816" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4052 -
C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe"C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3932 -
C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe"C:\Users\Admin\AppData\Local\Temp\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:412
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
MD5195fc28150bef9b30510eed36fb325af
SHA11ea8a314d8af1d431b77d5280d1782e9a8e867c6
SHA2565c2e51ccf5767f80257a0a0bb66dee40957e5379431e15a118e7f1343ad1f6e0
SHA512537da7e46d8b5afc796c1908042088c583c5380fb729f3665845fe36286b3efeaec9fa26475e9c2263f55b1eca04bd7ae26088a9a85950b2b7f750fd24eadcfc
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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
MD55e30e3a98c4e4f9e402fb647a18fffac
SHA1dcfcfbc61ab903a524b2a127b9ba4ff54cf8b37a
SHA25687dfeeb139de09ff4f4179e48d75a50cd2196c6172e69f64eb95bd5437b4cfcc
SHA5126a5138a939d6f5f475dd2f8d0c1bc3ba58a63e2528b4281bfc1aa614f7060e34c273c77661b33fd1a58b1fd44d5510dc63ed392363612d9f2dbc8c483f07d35f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5fa048d5434a6be56d4634500edbc5d97
SHA1fcc1e949151529dd63905d4413ca541405894823
SHA256ead252dc91d567e145974bac45078cf5124cf72642fa97b27d8d9f4bbf68bb36
SHA512551afaf80a721a1d45b6c7e94bdd0c1ba08f4958cb8d6985998feb975cd5dc57d08577a0e451b71a40eea48447025781e72a0470f658e29a6e940595b1566472
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C:\Users\Admin\AppData\Local\b6b277c1-fb4b-4ed4-8f0b-137351a49816\2c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d.exe
Filesize702KB
MD5e6ef999725d74157da2a50696d30db78
SHA11c87613f9d25fc1d2cb1c53c2149c032c8622436
SHA2562c01d80246365b0edf490a8417303cb4263a2ddf10830a2a26a7455ce4ba1e8d
SHA5120219f8c142821d06cea4b717d387a3c2b84c1da1f2161bd8bcbb16ef5b79e77b9bdb3fc9d527a639d601c6aedc9ff6e1aad664bfb9e9757081958811a5ee2e11