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Analysis
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max time kernel
145s -
max time network
134s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
29/12/2024, 08:57
Static task
static1
Behavioral task
behavioral1
Sample
299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Resource
win10v2004-20241007-en
General
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Target
299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
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Size
814KB
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MD5
8db858c113bf9da58fa9a7524c7023e9
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SHA1
d2a8dad63d4c66d3ac446c64f7c682584ab8b069
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SHA256
299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0
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SHA512
6336cd7afa29d5b8e36fb2279af3aa3e2da9f657a1769bf7dc6b6d60cff2e785f092fba3434af39abffe45cb9215bf7b852ced79d612f53c1b819f037042606f
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SSDEEP
24576:QEDLISgyeNv0em9UBCV44ecLfN2LiktuUcrwwN:QQeaeE44BULikBi3
Malware Config
Extracted
djvu
http://acacaca.org/test1/get.php
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extension
.vvew
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offline_id
rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1
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payload_url
http://rgyui.top/dl/build2.exe
http://acacaca.org/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
resource yara_rule behavioral1/memory/784-2-0x00000000004E0000-0x00000000005FB000-memory.dmp family_djvu behavioral1/memory/2096-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2096-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2096-9-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2096-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2888-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2888-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2888-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2888-49-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2888-50-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2888-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2888-63-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2888-66-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2888-65-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2888-67-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Djvu family
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Modifies file permissions 1 TTPs 1 IoCs
pid Process 2700 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4ad6388c-ea18-43de-8a5e-d85d4abda12a\\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe\" --AutoStart" 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.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 4 api.2ip.ua 5 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 784 set thread context of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 2748 set thread context of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2096 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 2096 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 2888 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 2888 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 784 wrote to memory of 2096 784 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 31 PID 2096 wrote to memory of 2700 2096 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 33 PID 2096 wrote to memory of 2700 2096 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 33 PID 2096 wrote to memory of 2700 2096 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 33 PID 2096 wrote to memory of 2700 2096 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 33 PID 2096 wrote to memory of 2748 2096 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 34 PID 2096 wrote to memory of 2748 2096 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 34 PID 2096 wrote to memory of 2748 2096 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 34 PID 2096 wrote to memory of 2748 2096 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 34 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35 PID 2748 wrote to memory of 2888 2748 299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:784 -
C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2096 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\4ad6388c-ea18-43de-8a5e-d85d4abda12a" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2700
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C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748 -
C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2888
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD567e486b2f148a3fca863728242b6273e
SHA1452a84c183d7ea5b7c015b597e94af8eef66d44a
SHA256facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb
SHA512d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e
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Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD5eafc3a8f47cfb8ea52072e96296f128b
SHA137d82f44029c58befad2d1056839b4dba2ec27ac
SHA256e78a16f4aed2b5faf925559929539e1ef9c6730bd06bf1fa9de35fe2576e6740
SHA512b317e8e94dd457c6c62d95d1dd0fb03da76f4584cbfe83188c63c429aa8dfbc642715f7ff4bb86b2198af343cc20b41db036a5a458a902052764010a2ce6eff7
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD57781bf187a457f67c27e06acdec78e1c
SHA1345b5712028bf9c262cb0e03a9540d72c4515031
SHA25618de3322ecc791e3e4156a1a274d16a06b68d34a62372c5b8abe41ad9d573699
SHA512ce5a83f8565eeac4295c65f999fd5e7462362940c60a53acdc665f30f5b29c2928b42b9a65efc038af0df251a1261806b67ef58baf3ec9738872c9d9cb77d63f
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C:\Users\Admin\AppData\Local\4ad6388c-ea18-43de-8a5e-d85d4abda12a\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
Filesize814KB
MD58db858c113bf9da58fa9a7524c7023e9
SHA1d2a8dad63d4c66d3ac446c64f7c682584ab8b069
SHA256299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0
SHA5126336cd7afa29d5b8e36fb2279af3aa3e2da9f657a1769bf7dc6b6d60cff2e785f092fba3434af39abffe45cb9215bf7b852ced79d612f53c1b819f037042606f
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b