Analysis
- max time kernel
147s - max time network
139s - platform
windows10-1703_x64 - resource
win10-20230703-en - resource tags
arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system - submitted
26/07/2023, 09:40
Static task
static1
Behavioral task
behavioral1
Sample
e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe
Resource
win10-20230703-en
General
- Target e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe
- Size 852KB
- Sample230726-lng3tsaf75
- SHA256 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c
- MD5 5d166a4a02e9171036403ac55a524c55
- SHA1 a41b406cd89f0690b746c018c0ad7e70c72be734
- SHA512 13a7c91163768c3fcae21cceefd71fb74e98371409573c8135cf20093c9da0b41c053ed346d6a6319656e98a8bb325e96cb2873d1589837a87e87853423aa9da
- SSDEEP 12288:idpN4ffBNd8S82fNcQsV5VWhXbH7QyKGU1V4WNcqclVUnTO2vE+BynowjPjmz:U6rd8XwWKXbbtK5TcSTO2v9kPjmz
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
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djvu
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http://zexeq.com/raud/get.php
-
extension
.wsuu
-
offline_id
7X6susBgNzwvmNWz9bMuyhXEUD44D10UNodg0Zt1
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payload_url
http://colisumy.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
-
ransomnote
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Signatures
- Detected Djvu ransomware 16 IoCs
resource yara_rule behavioral1/memory/352-122-0x0000000004190000-0x00000000042AB000-memory.dmp family_djvu behavioral1/memory/2716-123-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2716-124-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2716-125-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2716-126-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2716-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4796-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4796-143-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4796-144-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4796-149-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4796-150-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4796-154-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4796-156-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4796-157-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4796-158-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4796-167-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu - Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Downloads MZ/PE file
- Executes dropped EXE 2 IoCs
pid Process 2316 build3.exe 4488 mstsca.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 4640 icacls.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c198e5db-4807-4575-ba29-18aaa3b3adf3\\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe\" --AutoStart" e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.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.
flow ioc 1 api.2ip.ua 2 api.2ip.ua 11 api.2ip.ua - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 352 set thread context of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 1348 set thread context of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 3808 schtasks.exe 3900 schtasks.exe - Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2716 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 2716 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 4796 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 4796 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe - Suspicious use of WriteProcessMemory 35 IoCs
description pid Process procid_target PID 352 wrote to memory of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 352 wrote to memory of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 352 wrote to memory of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 352 wrote to memory of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 352 wrote to memory of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 352 wrote to memory of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 352 wrote to memory of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 352 wrote to memory of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 352 wrote to memory of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 352 wrote to memory of 2716 352 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 70 PID 2716 wrote to memory of 4640 2716 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 71 PID 2716 wrote to memory of 4640 2716 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 71 PID 2716 wrote to memory of 4640 2716 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 71 PID 2716 wrote to memory of 1348 2716 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 72 PID 2716 wrote to memory of 1348 2716 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 72 PID 2716 wrote to memory of 1348 2716 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 72 PID 1348 wrote to memory of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 PID 1348 wrote to memory of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 PID 1348 wrote to memory of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 PID 1348 wrote to memory of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 PID 1348 wrote to memory of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 PID 1348 wrote to memory of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 PID 1348 wrote to memory of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 PID 1348 wrote to memory of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 PID 1348 wrote to memory of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 PID 1348 wrote to memory of 4796 1348 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 74 PID 4796 wrote to memory of 2316 4796 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 75 PID 4796 wrote to memory of 2316 4796 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 75 PID 4796 wrote to memory of 2316 4796 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe 75 PID 2316 wrote to memory of 3808 2316 build3.exe 76 PID 2316 wrote to memory of 3808 2316 build3.exe 76 PID 2316 wrote to memory of 3808 2316 build3.exe 76 PID 4488 wrote to memory of 3900 4488 mstsca.exe 79 PID 4488 wrote to memory of 3900 4488 mstsca.exe 79 PID 4488 wrote to memory of 3900 4488 mstsca.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe"C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:352 -
C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe"C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2716 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\c198e5db-4807-4575-ba29-18aaa3b3adf3" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4640
-
-
C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe"C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1348 -
C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe"C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4796 -
C:\Users\Admin\AppData\Local\1657eb73-4ec0-42d1-a5c5-001b09ff1fce\build3.exe"C:\Users\Admin\AppData\Local\1657eb73-4ec0-42d1-a5c5-001b09ff1fce\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2316 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"6⤵
- Creates scheduled task(s)
PID:3808
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-
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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exeC:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4488 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"2⤵
- Creates scheduled task(s)
PID:3900
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
- Size 2KB
- SHA256 d62934313eec30d6276854f81ed0ad0fa455c13032f23c49dc5e931e53aa24fd
- MD5 debbf14f3483068c85dbb41089275387
- SHA1 53c67f0496489a8bf83e645035b9e030fe22f052
- SHA512 ef0f3231d777612c12fa32f6d9fd8c24f3147ab0d44e660ceb86d6cd43120be1396ae351d14305ad41d10799cb1fba9ae7626e6970ec840f4e30b4934a49971d
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
- Size 1KB
- SHA256 f29be229662b3201af3c58d4fcccb93da75f9cc44a2b7c2e3086302bb2bc1425
- MD5 9f4dbb9c92a85c4ef5093a2df64ac230
- SHA1 83acdef3b775ddcea8a50a04e8f1e8afaa6e0d22
- SHA512 25a85055583e7d008a25add9d4976e8255b01e2dce1a90b75c63c8eff8ee56a94ef35852210cbec1298fc905325d295c73a78f9a8e85ffdfc98d8a2b0896150b
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
- Size 488B
- SHA256 d0641d1cc7f27bc8de4387be0a52fc1992610a2a61b47fd07d455c921d92ef36
- MD5 b2f468b5d166e27fe74001958325a68a
- SHA1 3209c0c8f3d0a9f71714b530c62be041d81d57a1
- SHA512 5c00518baeb1a5c5960b3408d9f182e4dc09e074efccbb2bc71e97640dccc4d80294387a8afbfc7d15106fc772fede0293fa7a4eb2c2e05204d92fa8f60e8b39
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
- Size 482B
- SHA256 42c6fefedf185f8507eb178ebae3a69f40019e4f31586444ed58c44b82af4754
- MD5 82eceb941d12ff1e9d46367c0abb77f3
- SHA1 eeb97cc46c429b29bec5677ac536f6380688932f
- SHA512 00314f62da3b5267f031aab701c034977e146f5d67022601e1edbea5f91fe1da718c6d79474a53b37e11ed4e4574affd33e8543a74d93c65236d203aa08246f9
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\1657eb73-4ec0-42d1-a5c5-001b09ff1fce\build3.exe
- Size 9KB
- SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
- MD5 9ead10c08e72ae41921191f8db39bc16
- SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
- SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
- SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\1657eb73-4ec0-42d1-a5c5-001b09ff1fce\build3.exe
- Size 9KB
- SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
- MD5 9ead10c08e72ae41921191f8db39bc16
- SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
- SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
- SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\c198e5db-4807-4575-ba29-18aaa3b3adf3\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe
- Size 852KB
- SHA256 e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c
- MD5 5d166a4a02e9171036403ac55a524c55
- SHA1 a41b406cd89f0690b746c018c0ad7e70c72be734
- SHA512 13a7c91163768c3fcae21cceefd71fb74e98371409573c8135cf20093c9da0b41c053ed346d6a6319656e98a8bb325e96cb2873d1589837a87e87853423aa9da
- SSDEEP 12288:idpN4ffBNd8S82fNcQsV5VWhXbH7QyKGU1V4WNcqclVUnTO2vE+BynowjPjmz:U6rd8XwWKXbbtK5TcSTO2v9kPjmz
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
- Size 9KB
- SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
- MD5 9ead10c08e72ae41921191f8db39bc16
- SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
- SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
- SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
- Size 9KB
- SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
- MD5 9ead10c08e72ae41921191f8db39bc16
- SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
- SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
- SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
- Size 9KB
- SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
- MD5 9ead10c08e72ae41921191f8db39bc16
- SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
- SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
- SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
- MD5 SHA1 SHA512 SSDEEP