Analysis
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max time kernel
148s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
22-05-2024 18:59
Static task
static1
Behavioral task
behavioral1
Sample
3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
Resource
win10v2004-20240226-en
General
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Target
3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
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Size
710KB
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MD5
f47cff4805227d54842556b0bddaaf7e
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SHA1
f734391825c9028127d49fd00dcfcc24aa801eaa
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SHA256
3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19
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SHA512
369af8e8e589126accc108c5e86484ce71d57646b2a7ee436cc2a1a0d71ca57422681590300215b4606306d5f9df6e1264c7ec8d87da8ccf12f8054a67f8964b
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SSDEEP
12288:BidJzy+JS1wz8BcokecNRgMjBoVvS27EjYkWTa5310Wh44Zh3Pfp6/yA2m:Bid1vJS1xcokeUsvS27wG4nfB6KA2m
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 13 IoCs
Processes:
resource yara_rule behavioral1/memory/1936-7-0x0000000003020000-0x000000000313B000-memory.dmp family_djvu behavioral1/memory/2668-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2668-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2668-9-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2668-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2436-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2436-45-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2436-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2436-47-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2436-50-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2436-53-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2436-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2436-54-0x0000000000400000-0x0000000000537000-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:
3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b6a2d9ff-688c-4b01-8b31-8e5c8dabff9b\\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe\" --AutoStart" 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.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 3 api.2ip.ua 4 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exedescription pid process target process PID 1936 set thread context of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 set thread context of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exepid process 2668 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 2436 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 2436 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exedescription pid process target process PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 1936 wrote to memory of 2668 1936 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2668 wrote to memory of 2724 2668 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe icacls.exe PID 2668 wrote to memory of 2724 2668 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe icacls.exe PID 2668 wrote to memory of 2724 2668 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe icacls.exe PID 2668 wrote to memory of 2724 2668 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe icacls.exe PID 2668 wrote to memory of 2664 2668 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2668 wrote to memory of 2664 2668 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2668 wrote to memory of 2664 2668 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2668 wrote to memory of 2664 2668 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe PID 2664 wrote to memory of 2436 2664 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe 3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe"C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1936 -
C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe"C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2668 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\b6a2d9ff-688c-4b01-8b31-8e5c8dabff9b" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2724
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C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe"C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2664 -
C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe"C:\Users\Admin\AppData\Local\Temp\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2436
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD56728aea2631b86a76c237508d8ba9b55
SHA17a670f95cac088313f7558869162fe01c6dc0ec9
SHA256e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b
SHA512533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5
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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
MD5b849f836a255d4267d28a7c94e3bfa5b
SHA1fe722a0e03c09f0120b90f4454218098d39d2b9b
SHA256da11366492df0442f2d5a0bd4e70cb95c914b61cb76aa6cee21f9b2b4e773a91
SHA5126d1f4be85160c7fa8cb5457cc3b8565b0a50247189c71fafc55daf0ab0ee146721091d6895c8cb5e46332e94e622da72e9fdb05e01c67b2b4fd58de1f301a5ec
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5595580f3abd0271f733a4c8a787e7b67
SHA115b94fa1ddb8605ce4171336d8cdf4d4bfcfb019
SHA256588d7fd9f3cd707ad7e9b116664730cbcff0ebeb0867fe5ee2d0bc1d55b0bed1
SHA512c59e77bcb1270d0faad9535a37380c9771ac95a429fb2431166d331100efffba7954f4d290e509200b549751f0bd14bd3b2eb6dd218d5b67b4c3108f971ee270
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD55915a2800fff1a1bcb3079a5bf33ec0a
SHA1bd33173569875967675864cd077dabad73b8d5a0
SHA2562c8de4f7f2f355b099baaa19ebe92e58821669cf6c6a0604936fa20b4462fe3a
SHA512f1872b26ae0bc58d3d2cf7fc7165e43399912d5e9e74061a083c9c99c4ad39190b98ddc3f056af544f1167f8762fd9b3d66f9f13b25845eca94673a12610ad25
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Filesize
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
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C:\Users\Admin\AppData\Local\b6a2d9ff-688c-4b01-8b31-8e5c8dabff9b\3a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19.exe
Filesize710KB
MD5f47cff4805227d54842556b0bddaaf7e
SHA1f734391825c9028127d49fd00dcfcc24aa801eaa
SHA2563a2093b715f42abed73e4fa37d3c58d1bb0cd6f4767ae096f43518e1b168cb19
SHA512369af8e8e589126accc108c5e86484ce71d57646b2a7ee436cc2a1a0d71ca57422681590300215b4606306d5f9df6e1264c7ec8d87da8ccf12f8054a67f8964b