Analysis
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max time kernel
143s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
22-05-2024 18:25
Static task
static1
Behavioral task
behavioral1
Sample
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
Resource
win10v2004-20240508-en
General
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Target
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
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Size
738KB
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MD5
05567327c48b4b2af47574295ee9748b
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SHA1
7595f946efc74526f2b989413e73e3f37c4b4765
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SHA256
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925
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SHA512
293c0df46670b450a5a840a424ef1848a2dd8634a5e837b1ace4196ba76ba040dcb12a8a0397a4c1583af3d1b63227653999b64247f6b593ef5c1cf2ec33fdea
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SSDEEP
12288:xIArWcHGmhaQSRJSYXYDNV+VA6Sy7ng50CgH969W6Cw:xo1JSrDNV7y7n1ldK
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/2020-5-0x00000000023E0000-0x00000000024FB000-memory.dmp family_djvu behavioral1/memory/1808-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1808-7-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1808-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1808-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2776-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2776-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2776-45-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2776-47-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2776-53-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2776-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2776-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2776-55-0x0000000000400000-0x0000000000537000-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:
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ff12ad45-d01d-4ed4-8db0-61cb70754f97\\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe\" --AutoStart" 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.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:
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exedescription pid process target process PID 2020 set thread context of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 set thread context of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe -
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:
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exepid process 1808 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 2776 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exedescription pid process target process PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 2020 wrote to memory of 1808 2020 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1808 wrote to memory of 2672 1808 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe icacls.exe PID 1808 wrote to memory of 2672 1808 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe icacls.exe PID 1808 wrote to memory of 2672 1808 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe icacls.exe PID 1808 wrote to memory of 2672 1808 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe icacls.exe PID 1808 wrote to memory of 3048 1808 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1808 wrote to memory of 3048 1808 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1808 wrote to memory of 3048 1808 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1808 wrote to memory of 3048 1808 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 3048 wrote to memory of 2776 3048 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2020 -
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.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\ff12ad45-d01d-4ed4-8db0-61cb70754f97" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2672 -
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3048 -
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2776
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
MD5a97661ea82df9457de6e42b0eae25bc4
SHA1faff1318303c561752949cea0813db9479c39ac3
SHA2564d18d46a639e0899812ce81b647c2ae6969aa68598015568ed6cf83a763602e9
SHA512acaa6d907e578ec63043704f8cbdb2082f4b940eae128068edbd3b7d8051278fe8a505256261fc7697c8879a0715c16950f1d81c2fe61ce27ad1fa7e89f12e3a
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD569fe966b7a876086497de3f2be45762a
SHA1c58f805947816980095e8e24a6f3fe66fcae9048
SHA256a1b7da3dc73254d5e13e1f782cadb4f77f77599a86f0aacd9fca1c98b5ed70c8
SHA5120579e22d5b449bf140a4fdd6dc60068a578b495a74537e99ad4627a8bb13b1016d78edcde3a810e4bbb9abfc0df295355b2d1a8513f169243c4c9846e03ced9d
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5fc473cf2643629a54c08d1e2174b949d
SHA11d4633bb5b80a23be2a03c660a230571f7bdc772
SHA2564c65535ecd8fc5c14280ce2a0164f676a3e321ef0b5c239abda2abcf3e05255d
SHA5124755f92ad1b839f876cb9afb0dd6539ddee701697e189f79ff7dbb09ecfe4ae7a80426e778b1eb898d3bd64deae7e186fd82d8c1ff3430c972c5d5f5cec2acbe
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Filesize
68KB
MD529f65ba8e88c063813cc50a4ea544e93
SHA105a7040d5c127e68c25d81cc51271ffb8bef3568
SHA2561ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa
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C:\Users\Admin\AppData\Local\ff12ad45-d01d-4ed4-8db0-61cb70754f97\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
Filesize738KB
MD505567327c48b4b2af47574295ee9748b
SHA17595f946efc74526f2b989413e73e3f37c4b4765
SHA25641414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925
SHA512293c0df46670b450a5a840a424ef1848a2dd8634a5e837b1ace4196ba76ba040dcb12a8a0397a4c1583af3d1b63227653999b64247f6b593ef5c1cf2ec33fdea