Analysis
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max time kernel
298s -
max time network
246s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
25-07-2024 22:53
Static task
static1
Behavioral task
behavioral1
Sample
f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
Resource
win10-20240404-en
General
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Target
f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
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Size
790KB
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MD5
4b53133b0e11c01f58a1ad4eb69fa0ce
-
SHA1
00a3b78374a127bcb3c944f4a65ff0fe5ba04d37
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SHA256
f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01
-
SHA512
95d6245010d4784c2bc8e06965d097997f5c70af6f57e8a5c89845920641db493ca2a659ff3b93bcfac2d927434d4589b37de1364d919947a5c687f3f89fcab1
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SSDEEP
12288:Ex+HVyVS7kcMhsF6OwUdqSBnqQhDB2TMoWP6LxghFyjmHlYaOLUX:HEVSoTs8ShqwDBLMLihkjkWdLe
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
-
extension
.watz
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offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
- payload_url
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ransomnote
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Signatures
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Detected Djvu ransomware 14 IoCs
Processes:
resource yara_rule behavioral1/memory/2552-5-0x0000000003D40000-0x0000000003E5B000-memory.dmp family_djvu behavioral1/memory/2712-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2712-7-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2712-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2712-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2928-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2928-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2928-49-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2928-47-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2928-50-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2928-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2928-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2928-55-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2928-56-0x0000000000400000-0x0000000000537000-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:
f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b36f53cc-f14b-4a91-8a32-fa2cdeafa5e1\\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe\" --AutoStart" f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.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 -
Suspicious use of SetThreadContext 2 IoCs
Processes:
f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exef874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exedescription pid process target process PID 2552 set thread context of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 set thread context of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe -
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.
Processes:
icacls.exef874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exef874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exef874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exef874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exef874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exepid process 2712 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe 2712 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe 2928 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe 2928 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exef874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exef874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exedescription pid process target process PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2552 wrote to memory of 2712 2552 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2712 wrote to memory of 2844 2712 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe icacls.exe PID 2712 wrote to memory of 2844 2712 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe icacls.exe PID 2712 wrote to memory of 2844 2712 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe icacls.exe PID 2712 wrote to memory of 2844 2712 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe icacls.exe PID 2712 wrote to memory of 2752 2712 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2712 wrote to memory of 2752 2712 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2712 wrote to memory of 2752 2712 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2712 wrote to memory of 2752 2712 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe PID 2752 wrote to memory of 2928 2752 f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2552 -
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2712 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\b36f53cc-f14b-4a91-8a32-fa2cdeafa5e1" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2844 -
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2752 -
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2928
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD57fb5fa1534dcf77f2125b2403b30a0ee
SHA1365d96812a69ac0a4611ea4b70a3f306576cc3ea
SHA25633a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
SHA512a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e
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Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD5139d8702db8d2fb180c4bedf1a17ab4c
SHA122cf299152feea8024d4eb6bde05b960b911bcb9
SHA256c001f28c543a4dac7a1fc56edd19a5b8f117d88c5ce1b6059308f916f14baf9f
SHA512b77f004f99fbf1976dc2b440c637070184d74fb2315a926a51fe5fbff4768397306c145a91fe5918fd51a03cb38471852dd398aeff40505f9e8868fb3aafaf9c
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD576d650bc1058ee2e24c19f662b76f57b
SHA16ec42bd6162db2bfaf755c310bfebffac7c6b4bb
SHA2569300b0b8017279e3866c144618331064be49046e7568fafe78ac02f3ff59724d
SHA512d96fd121fe62e600fa7185fc27e117aecb811b8559d8781fe0fc148fc6ff39b09578f8a0e2c891552ded94fe434c5a8daea15d053479d6ace5febb3f5d09e17e
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
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C:\Users\Admin\AppData\Local\b36f53cc-f14b-4a91-8a32-fa2cdeafa5e1\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
Filesize790KB
MD54b53133b0e11c01f58a1ad4eb69fa0ce
SHA100a3b78374a127bcb3c944f4a65ff0fe5ba04d37
SHA256f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01
SHA51295d6245010d4784c2bc8e06965d097997f5c70af6f57e8a5c89845920641db493ca2a659ff3b93bcfac2d927434d4589b37de1364d919947a5c687f3f89fcab1