Analysis
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max time kernel
154s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
09/04/2024, 02:44
Static task
static1
Behavioral task
behavioral1
Sample
03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
Resource
win11-20240319-en
General
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Target
03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
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Size
771KB
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MD5
a911c76f3695c14585bc205d9201804d
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SHA1
c8422674f6541052f5b40bc0b0b106b57839581c
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SHA256
03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800
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SHA512
decf1357c7207e89912b33f6d0071d2112fe01d7612f8002035f0cdeb6e0a19dd3e72d5f63937ab3d54ebe46a5c4f5e2516b0a052d38c079724beb777cdaea79
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SSDEEP
12288:xJHZKiK+XbETiv41h3z3oouI5RJMcX6MUy7W3KxCaaUQEyVWeX4FnVq83K/qH46h:fKiqJzYGbhwuW3KrayziaVi
Malware Config
Extracted
djvu
http://sajdfue.com/test2/get.php
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extension
.uazq
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offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
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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 9 IoCs
resource yara_rule behavioral1/memory/464-2-0x0000000004A60000-0x0000000004B7B000-memory.dmp family_djvu behavioral1/memory/3768-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3768-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3768-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3768-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3768-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3456-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3456-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3456-25-0x0000000000400000-0x0000000000537000-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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1684 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\61d139fb-ca56-408d-a06e-df6d64877503\\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe\" --AutoStart" 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 1 api.2ip.ua 2 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 464 set thread context of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 2924 set thread context of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 4664 3456 WerFault.exe 98 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3768 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 3768 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 464 wrote to memory of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 464 wrote to memory of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 464 wrote to memory of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 464 wrote to memory of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 464 wrote to memory of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 464 wrote to memory of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 464 wrote to memory of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 464 wrote to memory of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 464 wrote to memory of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 464 wrote to memory of 3768 464 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 94 PID 3768 wrote to memory of 1684 3768 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 95 PID 3768 wrote to memory of 1684 3768 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 95 PID 3768 wrote to memory of 1684 3768 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 95 PID 3768 wrote to memory of 2924 3768 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 96 PID 3768 wrote to memory of 2924 3768 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 96 PID 3768 wrote to memory of 2924 3768 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 96 PID 2924 wrote to memory of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98 PID 2924 wrote to memory of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98 PID 2924 wrote to memory of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98 PID 2924 wrote to memory of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98 PID 2924 wrote to memory of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98 PID 2924 wrote to memory of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98 PID 2924 wrote to memory of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98 PID 2924 wrote to memory of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98 PID 2924 wrote to memory of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98 PID 2924 wrote to memory of 3456 2924 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:464 -
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3768 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\61d139fb-ca56-408d-a06e-df6d64877503" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1684
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C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2924 -
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe" --Admin IsNotAutoStart IsNotTask4⤵PID:3456
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3456 -s 5685⤵
- Program crash
PID:4664
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3456 -ip 34561⤵PID:4120
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4088 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:81⤵PID:2648
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\61d139fb-ca56-408d-a06e-df6d64877503\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
Filesize771KB
MD5a911c76f3695c14585bc205d9201804d
SHA1c8422674f6541052f5b40bc0b0b106b57839581c
SHA25603e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800
SHA512decf1357c7207e89912b33f6d0071d2112fe01d7612f8002035f0cdeb6e0a19dd3e72d5f63937ab3d54ebe46a5c4f5e2516b0a052d38c079724beb777cdaea79