Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
21-05-2024 12:57
Static task
static1
Behavioral task
behavioral1
Sample
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
Resource
win11-20240426-en
General
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Target
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
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Size
709KB
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MD5
93c4185d6bd7d35620815e99aa6d9f2b
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SHA1
01c3bfaffb1496d0b4b2d52e21db58dc76d2dd39
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SHA256
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697
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SHA512
8f21de65cc56a4c20a3211b6d598b748c1115d08cb44d2f086c6b5e5c26b3e572b956a361d05e8c2495a8e43097ba79b1f49c73e097f4f9d8a65664ef95722f0
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SSDEEP
12288:w/JSh8Uu2rB9DIuiqetcEFT39g+0qzyvbtvQRXUyfZwj:wBShZrTDIsmFD9FWvsvBs
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 behavioral1/memory/712-2-0x0000000004110000-0x000000000422B000-memory.dmp family_djvu behavioral1/memory/4532-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4280-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4280-26-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4280-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4280-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4280-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4280-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4280-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4280-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4280-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\61e90a1c-ce1a-412b-9a07-2a04475cd375\\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe\" --AutoStart" d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.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 6 api.2ip.ua 14 api.2ip.ua 5 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exed90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exedescription pid process target process PID 712 set thread context of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 set thread context of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.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:
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exed90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exepid process 4532 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe 4532 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe 4280 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe 4280 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exed90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exed90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exedescription pid process target process PID 712 wrote to memory of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 712 wrote to memory of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 712 wrote to memory of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 712 wrote to memory of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 712 wrote to memory of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 712 wrote to memory of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 712 wrote to memory of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 712 wrote to memory of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 712 wrote to memory of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 712 wrote to memory of 4532 712 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4532 wrote to memory of 1532 4532 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe icacls.exe PID 4532 wrote to memory of 1532 4532 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe icacls.exe PID 4532 wrote to memory of 1532 4532 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe icacls.exe PID 4532 wrote to memory of 4316 4532 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4532 wrote to memory of 4316 4532 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4532 wrote to memory of 4316 4532 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 wrote to memory of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 wrote to memory of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 wrote to memory of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 wrote to memory of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 wrote to memory of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 wrote to memory of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 wrote to memory of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 wrote to memory of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 wrote to memory of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 4316 wrote to memory of 4280 4316 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:712 -
C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4532 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\61e90a1c-ce1a-412b-9a07-2a04475cd375" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1532 -
C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4316 -
C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4280
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
MD5df80f9ba75076db634761b6132e0d4e3
SHA107983946fb660752c7cccb2ef82d01ec4c9ecc5d
SHA256d5ff96fd8b416de93a85783192206224cf8821c240cd8ff755f2e8270153dd99
SHA5124ec734c5d29e9ce00b00e42b627253195e8c7a158433fedfcee428e692a6501981c33d7c8a39235f8b691f087145cdbe660b430493edbeedb12588c5cdd5a66a
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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
MD5570cbe925b75ee7d442f54410c36fb24
SHA19563946019cacfcec9d7eaeca642381f12d4b660
SHA256e145bd4fe6d1b6cdc438e24beda744e1fd24dcf7fbb6932f152e9aaf0edb855b
SHA512b53970e6c64d8de1887d2a150cbc2cb79b27ee30f434e91481d5a16cd3d6ff3decf09063d6123a2f149d80a3f750bc1805d50beb226e97b81e2f18ff0bd21064
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD54394fb21dc453052a86831f1fed996db
SHA115111a498f1a2dbe7ce0881f18d17eb42fee1067
SHA256396dbb4e24085f93fd15672647d489550b047faffe0af9190a3b0cf91178d417
SHA51251ad74fd36d072d8d4eec8d93af25548a55fc45c92a85607cc1290f02c393c8f142d3cc2aa34f73a31f881511b692c9e28620b6929e46d3aaf1661ed04a36eba
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C:\Users\Admin\AppData\Local\61e90a1c-ce1a-412b-9a07-2a04475cd375\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
Filesize709KB
MD593c4185d6bd7d35620815e99aa6d9f2b
SHA101c3bfaffb1496d0b4b2d52e21db58dc76d2dd39
SHA256d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697
SHA5128f21de65cc56a4c20a3211b6d598b748c1115d08cb44d2f086c6b5e5c26b3e572b956a361d05e8c2495a8e43097ba79b1f49c73e097f4f9d8a65664ef95722f0