Analysis
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max time kernel
147s -
max time network
128s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
21-10-2024 13:03
Static task
static1
Behavioral task
behavioral1
Sample
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
Resource
win10v2004-20241007-en
General
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Target
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
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Size
754KB
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MD5
51cdffb93a6be165bbf7657410530d0d
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SHA1
a479e69408af50ad5b5e12539fad8a98316f8fd0
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SHA256
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70
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SHA512
1e6135c8399ab9289fa97afbf87a73b87a8d4850d73bffa67c41d38137723a0dcacc32c91340c260bf49bd2e2116d559fba218152d8ad6ab4e20ea0d6ea0d49c
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SSDEEP
12288:46bRBPCVNzRrurNBVORUzCpdMtyfwbqBS9H4Tk53eiYaNLNvR:lbiVNpuFORu8dMMfbU7Yap
Malware Config
Extracted
djvu
http://sajdfue.com/test2/get.php
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extension
.looy
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offline_id
1eSPzWRaNslCgtjBZfL5pzvovoiaVI4IZSnvAwt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 16 IoCs
Processes:
resource yara_rule behavioral1/memory/3064-2-0x0000000001DA0000-0x0000000001EBB000-memory.dmp family_djvu behavioral1/memory/2140-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2140-7-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2140-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2140-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-53-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-56-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-59-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-58-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-60-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2836-61-0x0000000000400000-0x0000000000537000-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:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\828c72a5-521d-4104-850c-86e1322c9dc2\\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe\" --AutoStart" b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.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 5 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exedescription pid process target process PID 3064 set thread context of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 set thread context of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.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:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeicacls.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exepid process 2140 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe 2140 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe 2836 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe 2836 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exeb43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exedescription pid process target process PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 3064 wrote to memory of 2140 3064 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2140 wrote to memory of 2856 2140 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe icacls.exe PID 2140 wrote to memory of 2856 2140 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe icacls.exe PID 2140 wrote to memory of 2856 2140 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe icacls.exe PID 2140 wrote to memory of 2856 2140 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe icacls.exe PID 2140 wrote to memory of 2832 2140 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2140 wrote to memory of 2832 2140 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2140 wrote to memory of 2832 2140 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2140 wrote to memory of 2832 2140 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe PID 2832 wrote to memory of 2836 2832 b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3064 -
C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2140 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\828c72a5-521d-4104-850c-86e1322c9dc2" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2856 -
C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2832 -
C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe"C:\Users\Admin\AppData\Local\Temp\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2836
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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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
MD520e57091fe292b75e25bd45d9bef4881
SHA198e80cc0f78adb9fb0a4c468b03b15a972d0bd9b
SHA2566e15450fb66189a11912bf06f21a827b6544fe9b8a3460fef0d0274400606b07
SHA512979ff87b4bc09dc7e9d6360db2a1e011ae75d7e7f9365f647807c503eca58c4d166c4c34d002ef257b2797cb9bc46dd4ab00897bb60e5ecc2ddce765fa557902
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5a5f3be61233f799393e751ea3101d738
SHA1bab732d8cfefe804738c2130b67ec0b7e499c263
SHA256aaeb44931ee4672e22cfb9cbba8ad0c999aef8901b702e03858958fa45fb12c0
SHA512e3366ab10dbbc66118051d0824aaf1138994737845bfb3346f13708f5c580cb9419028da1a930103614bc246a0c8f9b07ff64628c92d1d5c69d6dd3eb07ad36d
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C:\Users\Admin\AppData\Local\828c72a5-521d-4104-850c-86e1322c9dc2\b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70.exe
Filesize754KB
MD551cdffb93a6be165bbf7657410530d0d
SHA1a479e69408af50ad5b5e12539fad8a98316f8fd0
SHA256b43118f2550262e243a70fe40572428e3921f5e6c6a53c3c4c85e5cbd4325d70
SHA5121e6135c8399ab9289fa97afbf87a73b87a8d4850d73bffa67c41d38137723a0dcacc32c91340c260bf49bd2e2116d559fba218152d8ad6ab4e20ea0d6ea0d49c
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b