Analysis
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max time kernel
22s -
max time network
23s -
platform
windows7_x64 -
resource
win7-20240221-de -
resource tags
arch:x64arch:x86image:win7-20240221-delocale:de-deos:windows7-x64systemwindows -
submitted
22-06-2024 19:48
Static task
static1
Behavioral task
behavioral1
Sample
78E.tmp.exe
Resource
win7-20240221-de
General
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Target
78E.tmp.exe
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Size
466KB
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MD5
246d6fa957bd9bd9bd444ba8a6c38457
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SHA1
fb90a2e9e3f3d4bf350a5c8d475c843f072bc1f5
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SHA256
9c17cc38feddc8aec42f4d7e84ff85260e0e5d955c38e42573a21c18836c7a59
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SHA512
95e3135f417fdfd91c8e57545c246c5a0f5efc40fe1e3ef745b8283c35b156d7814934be5983dd5532b7fb789a4032a3e1d619281d0e4e1b465b86f2a036e3bb
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SSDEEP
6144:agBl9KO2wSlnYlm8px3b3RY+F2q9QgW6jw5oJ48ph1nt2EuqAs00:aEKOZSlnbE3b3RiqW6jw5o6831/A
Malware Config
Extracted
djvu
http://root.ug/Asjdhfiughdhhjbdfh45687husdfhipenelop8/Asdhuage7386/get.php
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extension
.sarut
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offline_id
pQseAIqgTVhPujMMiqH1ILPNUg3soGVim0NAnkt1
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payload_url
http://pool.ug/tesptc/penelop/updatewin1.exe
http://pool.ug/tesptc/penelop/updatewin2.exe
http://pool.ug/tesptc/penelop/updatewin.exe
http://pool.ug/tesptc/penelop/3.exe
http://pool.ug/tesptc/penelop/4.exe
http://pool.ug/tesptc/penelop/5.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 7 IoCs
Processes:
resource yara_rule behavioral1/memory/2116-2-0x0000000000400000-0x000000000047A000-memory.dmp family_djvu behavioral1/memory/2116-24-0x0000000000400000-0x000000000047A000-memory.dmp family_djvu behavioral1/memory/2116-22-0x0000000000400000-0x00000000004BC000-memory.dmp family_djvu behavioral1/memory/2348-26-0x0000000000400000-0x00000000004BC000-memory.dmp family_djvu behavioral1/memory/2348-27-0x0000000000400000-0x00000000004BC000-memory.dmp family_djvu behavioral1/memory/2348-42-0x0000000000400000-0x00000000004BC000-memory.dmp family_djvu behavioral1/memory/2348-43-0x0000000000400000-0x00000000004BC000-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:
78E.tmp.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3e418653-e1f0-48be-a1df-7230853ea3d1\\78E.tmp.exe\" --AutoStart" 78E.tmp.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 4 api.2ip.ua 9 api.2ip.ua 3 api.2ip.ua -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
78E.tmp.exe78E.tmp.exepid process 2116 78E.tmp.exe 2348 78E.tmp.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
78E.tmp.exedescription pid process target process PID 2116 wrote to memory of 2752 2116 78E.tmp.exe icacls.exe PID 2116 wrote to memory of 2752 2116 78E.tmp.exe icacls.exe PID 2116 wrote to memory of 2752 2116 78E.tmp.exe icacls.exe PID 2116 wrote to memory of 2752 2116 78E.tmp.exe icacls.exe PID 2116 wrote to memory of 2348 2116 78E.tmp.exe 78E.tmp.exe PID 2116 wrote to memory of 2348 2116 78E.tmp.exe 78E.tmp.exe PID 2116 wrote to memory of 2348 2116 78E.tmp.exe 78E.tmp.exe PID 2116 wrote to memory of 2348 2116 78E.tmp.exe 78E.tmp.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\78E.tmp.exe"C:\Users\Admin\AppData\Local\Temp\78E.tmp.exe"1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\3e418653-e1f0-48be-a1df-7230853ea3d1" /deny *S-1-1-0:(OI)(CI)(DE,DC)2⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\78E.tmp.exe"C:\Users\Admin\AppData\Local\Temp\78E.tmp.exe" --Admin IsNotAutoStart IsNotTask2⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12Filesize
1KB
MD52365869258df7a66a2121b802ca4afd9
SHA173acc30a2edeb9d6830de559bb8a74f35168135d
SHA256d6b1932822bbd72a8e78c771717d992142348f67d625a42393719fefbe59b0ed
SHA512795004bab536e128dbd81c188976d37c7b650efbfa5a80374df4c65a1049c27658f4620b7605583928eb167fcb69b4c99e4c8730c507b824a7bde9c7fb0e21f4
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8Filesize
436B
MD51bfe0a81db078ea084ff82fe545176fe
SHA150b116f578bd272922fa8eae94f7b02fd3b88384
SHA2565ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f
SHA51237c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12Filesize
174B
MD513ea9494d86bc5b0fce86b479dae647f
SHA15ae5df08cbb170a5ee0ad01fc0a661a554bc9eda
SHA256ce4e94a26559a49927308d1de4a501383ebda2c1665ffc1b0c88c8822e053763
SHA512d30fedbb7a028ecf5c14a8b0894b99a55f0c4ff8f430bde82053dd293fad6e05b8f6d6edfbb85801b4f879e5fb87b258966c0ecd340339e4fac1639f2c986552
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015Filesize
344B
MD59ae2a669097c28cd4cae69aee1fda526
SHA1e9e66f8dbc4fbf51f0cde652a0f036df9ce3811d
SHA2563a984f4c65f873d435cddfc29aba6522bd29c0efcda5f0f65228dfb33a2978b8
SHA512ba363f798c8be259b9dee82b16473308644d423ac9c993ff6e58c1b8a83a4b6f094e76405522153af0ccaa3a4088e20c625cf2c802927ababc69a12cc511dbdb
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8Filesize
170B
MD543d3b4218bc2c62f3ddf4affcd1807e1
SHA12c78e0fbbf83e5311e4a7b4d9ead5d93438dbbfa
SHA256cbc17bc86ab1dadba75129c635b1297c1fcb2955c95486e7272c34692061cd34
SHA512b7c31556d4c509d134e4bfa34a1a2b0d82c835468f32e193cb4b7c7c9360f1a2a165fe7b1c44dedbbb14017829fafd35392bbd33a15df9df43f7641e8e8891c3
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C:\Users\Admin\AppData\Local\3e418653-e1f0-48be-a1df-7230853ea3d1\78E.tmp.exeFilesize
466KB
MD5246d6fa957bd9bd9bd444ba8a6c38457
SHA1fb90a2e9e3f3d4bf350a5c8d475c843f072bc1f5
SHA2569c17cc38feddc8aec42f4d7e84ff85260e0e5d955c38e42573a21c18836c7a59
SHA51295e3135f417fdfd91c8e57545c246c5a0f5efc40fe1e3ef745b8283c35b156d7814934be5983dd5532b7fb789a4032a3e1d619281d0e4e1b465b86f2a036e3bb
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C:\Users\Admin\AppData\Local\Temp\Cab454A.tmpFilesize
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
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memory/2116-23-0x0000000000250000-0x0000000000350000-memory.dmpFilesize
1024KB
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memory/2116-22-0x0000000000400000-0x00000000004BC000-memory.dmpFilesize
752KB
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memory/2116-24-0x0000000000400000-0x000000000047A000-memory.dmpFilesize
488KB
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memory/2116-2-0x0000000000400000-0x000000000047A000-memory.dmpFilesize
488KB
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memory/2116-1-0x0000000000250000-0x0000000000350000-memory.dmpFilesize
1024KB
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memory/2348-26-0x0000000000400000-0x00000000004BC000-memory.dmpFilesize
752KB
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memory/2348-27-0x0000000000400000-0x00000000004BC000-memory.dmpFilesize
752KB
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memory/2348-42-0x0000000000400000-0x00000000004BC000-memory.dmpFilesize
752KB
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memory/2348-43-0x0000000000400000-0x00000000004BC000-memory.dmpFilesize
752KB