Analysis
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max time kernel
143s -
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
17/04/2024, 10:40
Static task
static1
Behavioral task
behavioral1
Sample
294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
Resource
win11-20240412-en
General
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Target
294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
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Size
804KB
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MD5
f1cfe760eb1c2a1b4c59558871649106
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SHA1
e073e09713891f07988b3f1292df22e41753c412
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SHA256
294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b
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SHA512
7821f46cdf3b514365ea195051d3788cfd8e95c493528b5073a4eae2c5bbe37c79b1d30db99eab95f4331a3590fad7529926acf1f711fc3cf724d01a40ac9f9a
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SSDEEP
12288:dVB9zimo85giLd/aCLQpbZjI5bMyyGb6hew00iQTI1kxOk1T39gyneL9:dTGod6wMyVb6Qw0EI1Fk3oh
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/1844-2-0x0000000004BB0000-0x0000000004CCB000-memory.dmp family_djvu behavioral1/memory/32-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/32-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/32-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/32-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/32-16-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4084-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4084-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4084-23-0x0000000000400000-0x0000000000537000-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 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 4928 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\\4fecf919-6600-4481-a645-0e96ffb38cad\\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe\" --AutoStart" 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.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 7 api.2ip.ua 8 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1844 set thread context of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 2500 set thread context of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97 -
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 2204 4084 WerFault.exe 97 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 32 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 32 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 1844 wrote to memory of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 1844 wrote to memory of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 1844 wrote to memory of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 1844 wrote to memory of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 1844 wrote to memory of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 1844 wrote to memory of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 1844 wrote to memory of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 1844 wrote to memory of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 1844 wrote to memory of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 1844 wrote to memory of 32 1844 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 91 PID 32 wrote to memory of 4928 32 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 94 PID 32 wrote to memory of 4928 32 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 94 PID 32 wrote to memory of 4928 32 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 94 PID 32 wrote to memory of 2500 32 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 95 PID 32 wrote to memory of 2500 32 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 95 PID 32 wrote to memory of 2500 32 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 95 PID 2500 wrote to memory of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97 PID 2500 wrote to memory of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97 PID 2500 wrote to memory of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97 PID 2500 wrote to memory of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97 PID 2500 wrote to memory of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97 PID 2500 wrote to memory of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97 PID 2500 wrote to memory of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97 PID 2500 wrote to memory of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97 PID 2500 wrote to memory of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97 PID 2500 wrote to memory of 4084 2500 294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe 97
Processes
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C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1844 -
C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:32 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\4fecf919-6600-4481-a645-0e96ffb38cad" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4928
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C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2500 -
C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe"C:\Users\Admin\AppData\Local\Temp\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe" --Admin IsNotAutoStart IsNotTask4⤵PID:4084
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4084 -s 5685⤵
- Program crash
PID:2204
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4084 -ip 40841⤵PID:1164
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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=4076 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:81⤵PID:1512
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\4fecf919-6600-4481-a645-0e96ffb38cad\294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b.exe
Filesize804KB
MD5f1cfe760eb1c2a1b4c59558871649106
SHA1e073e09713891f07988b3f1292df22e41753c412
SHA256294ad75f41aedb3c48eaf9d6358fa780920d5270a9d45151ceda767b7ee9600b
SHA5127821f46cdf3b514365ea195051d3788cfd8e95c493528b5073a4eae2c5bbe37c79b1d30db99eab95f4331a3590fad7529926acf1f711fc3cf724d01a40ac9f9a