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Analysis
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max time kernel
116s -
max time network
71s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
07/01/2025, 23:01
Static task
static1
Behavioral task
behavioral1
Sample
be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe
Resource
win10v2004-20241007-en
General
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Target
be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe
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Size
766KB
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MD5
a0218a67b0d9faf2721cae2bde1d1a10
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SHA1
6ca3ebd170d21e6e9b572f2386bb828d0afcba4a
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SHA256
be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4b
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SHA512
d7ce12cee7d3eb85e09139741d77b5a2a3d203d1a10aa620d3b4a17668317dc28248a84f0c0a20ce165c1f32804e6b6b2cde90e59e8ccb3ee8e3f9b5d3d7fdd9
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SSDEEP
12288:nKDiXNmHNpcGWH69SIW5JBvOwcMBl4tT5jVXctOpctHni7LEwv:nMiXNKNpM6jW5JDcIit+OpAHUEw
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.held
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offline_id
vyhLHcV0DMKjS0CgDoJGF0yJ299laBK7lZQM9Tt1
- payload_url
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ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
resource yara_rule behavioral1/memory/300-2-0x00000000020C0000-0x00000000021DB000-memory.dmp family_djvu behavioral1/memory/3068-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3068-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3068-9-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3068-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2708-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2708-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2708-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2708-53-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2708-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2708-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2708-60-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2708-62-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2708-63-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2708-64-0x0000000000400000-0x0000000000537000-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 2776 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6dac367a-9e5d-472f-90ce-cff091d8cfff\\be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe\" --AutoStart" be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.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 300 set thread context of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 2812 set thread context of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.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 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3068 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 3068 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 2708 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 2708 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 300 wrote to memory of 3068 300 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 30 PID 3068 wrote to memory of 2776 3068 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 33 PID 3068 wrote to memory of 2776 3068 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 33 PID 3068 wrote to memory of 2776 3068 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 33 PID 3068 wrote to memory of 2776 3068 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 33 PID 3068 wrote to memory of 2812 3068 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 34 PID 3068 wrote to memory of 2812 3068 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 34 PID 3068 wrote to memory of 2812 3068 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 34 PID 3068 wrote to memory of 2812 3068 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 34 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35 PID 2812 wrote to memory of 2708 2812 be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe"C:\Users\Admin\AppData\Local\Temp\be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:300 -
C:\Users\Admin\AppData\Local\Temp\be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe"C:\Users\Admin\AppData\Local\Temp\be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3068 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\6dac367a-9e5d-472f-90ce-cff091d8cfff" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2776
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C:\Users\Admin\AppData\Local\Temp\be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe"C:\Users\Admin\AppData\Local\Temp\be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812 -
C:\Users\Admin\AppData\Local\Temp\be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe"C:\Users\Admin\AppData\Local\Temp\be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2708
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5c9be626e9715952e9b70f92f912b9787
SHA1aa2e946d9ad9027172d0d321917942b7562d6abe
SHA256c13e8d22800c200915f87f71c31185053e4e60ca25de2e41e160e09cd2d815d4
SHA5127581b7c593785380e9db3ae760af85c1a889f607a3cd2aa5a2695a0e5a0fe8ee751578e88f7d8c997faeda804e2fc2655d859bee2832eace526ed4379edaa3f5
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Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD5a58b2188b49e4377088e2bbe0155d856
SHA11e9a562f7e779dad200761d7dc60a327506eede7
SHA256e93af54f67285d81d068760532812f52b1a90623b4c621f3429a20a4704a6f4b
SHA51298a90febb8f017e7b4688873bcb2eeb8243eb3050b9c66440c9e516a70ad0abeec4ef135f71d36eb0cd30fe33cb1cda6da03e60774ae997006bbbd92fa2d943e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5437193b6cdd12b02e6732684d98df6ba
SHA10acc560272e3a71f141a2984cd3a56de63159977
SHA256c9bfb97d2867a2c897e6b0c065346d923c126ee72d27af43db28d65115e6b124
SHA51296fc6f09d6f0b17a38ba57dc7f49dc849629082fb1fb2eb4d88f4fb3ee2c610d7f8c958720783083714bf0eaf5343ca2f500ab969f0a911aabf136795eb57d44
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C:\Users\Admin\AppData\Local\6dac367a-9e5d-472f-90ce-cff091d8cfff\be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4bN.exe
Filesize766KB
MD5a0218a67b0d9faf2721cae2bde1d1a10
SHA16ca3ebd170d21e6e9b572f2386bb828d0afcba4a
SHA256be3d44217a6e68c19c91cf9bc4eefb6ec537a0e70fe3d3095519fd3dec9f9b4b
SHA512d7ce12cee7d3eb85e09139741d77b5a2a3d203d1a10aa620d3b4a17668317dc28248a84f0c0a20ce165c1f32804e6b6b2cde90e59e8ccb3ee8e3f9b5d3d7fdd9
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b