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Analysis
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max time kernel
175s -
max time network
177s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
03/12/2022, 09:07
Static task
static1
Behavioral task
behavioral1
Sample
1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe
Resource
win10v2004-20220812-en
General
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Target
1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe
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Size
296KB
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MD5
5ca14e99d748f71d726d813bf574b11e
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SHA1
fb3eb15fb5d97236625591fd6511459019b8214f
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SHA256
1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38
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SHA512
be208be98964ee7b2ece5c0a2e5207b7e34406b4b23638168e6185a32dd2f6cf437bc908f39e15c81921174e14e4cc52969e3004ceabb458787eec38faa1a947
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SSDEEP
6144:IoOeH4vkd5jIxRFKA5tl1mnLZrWz3ZnnW/Mq3gg+FGtFrKs0MjDTQP/6oHp:IfeH4K5jal4yW/MMnwGtFmsy3P
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 4888 iryn.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run iryn.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Iryn = "C:\\Users\\Admin\\AppData\\Roaming\\Yrxae\\iryn.exe" iryn.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 440 set thread context of 2288 440 1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe 82 -
Suspicious behavior: EnumeratesProcesses 50 IoCs
pid Process 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe 4888 iryn.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 440 wrote to memory of 4888 440 1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe 81 PID 440 wrote to memory of 4888 440 1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe 81 PID 440 wrote to memory of 4888 440 1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe 81 PID 4888 wrote to memory of 2384 4888 iryn.exe 43 PID 4888 wrote to memory of 2384 4888 iryn.exe 43 PID 4888 wrote to memory of 2384 4888 iryn.exe 43 PID 4888 wrote to memory of 2384 4888 iryn.exe 43 PID 4888 wrote to memory of 2384 4888 iryn.exe 43 PID 4888 wrote to memory of 2456 4888 iryn.exe 44 PID 4888 wrote to memory of 2456 4888 iryn.exe 44 PID 4888 wrote to memory of 2456 4888 iryn.exe 44 PID 4888 wrote to memory of 2456 4888 iryn.exe 44 PID 4888 wrote to memory of 2456 4888 iryn.exe 44 PID 4888 wrote to memory of 2756 4888 iryn.exe 77 PID 4888 wrote to memory of 2756 4888 iryn.exe 77 PID 4888 wrote to memory of 2756 4888 iryn.exe 77 PID 4888 wrote to memory of 2756 4888 iryn.exe 77 PID 4888 wrote to memory of 2756 4888 iryn.exe 77 PID 4888 wrote to memory of 2484 4888 iryn.exe 76 PID 4888 wrote to memory of 2484 4888 iryn.exe 76 PID 4888 wrote to memory of 2484 4888 iryn.exe 76 PID 4888 wrote to memory of 2484 4888 iryn.exe 76 PID 4888 wrote to memory of 2484 4888 iryn.exe 76 PID 4888 wrote to memory of 2780 4888 iryn.exe 75 PID 4888 wrote to memory of 2780 4888 iryn.exe 75 PID 4888 wrote to memory of 2780 4888 iryn.exe 75 PID 4888 wrote to memory of 2780 4888 iryn.exe 75 PID 4888 wrote to memory of 2780 4888 iryn.exe 75 PID 4888 wrote to memory of 3272 4888 iryn.exe 74 PID 4888 wrote to memory of 3272 4888 iryn.exe 74 PID 4888 wrote to memory of 3272 4888 iryn.exe 74 PID 4888 wrote to memory of 3272 4888 iryn.exe 74 PID 4888 wrote to memory of 3272 4888 iryn.exe 74 PID 4888 wrote to memory of 3364 4888 iryn.exe 73 PID 4888 wrote to memory of 3364 4888 iryn.exe 73 PID 4888 wrote to memory of 3364 4888 iryn.exe 73 PID 4888 wrote to memory of 3364 4888 iryn.exe 73 PID 4888 wrote to memory of 3364 4888 iryn.exe 73 PID 4888 wrote to memory of 3424 4888 iryn.exe 53 PID 4888 wrote to memory of 3424 4888 iryn.exe 53 PID 4888 wrote to memory of 3424 4888 iryn.exe 53 PID 4888 wrote to memory of 3424 4888 iryn.exe 53 PID 4888 wrote to memory of 3424 4888 iryn.exe 53 PID 4888 wrote to memory of 3516 4888 iryn.exe 72 PID 4888 wrote to memory of 3516 4888 iryn.exe 72 PID 4888 wrote to memory of 3516 4888 iryn.exe 72 PID 4888 wrote to memory of 3516 4888 iryn.exe 72 PID 4888 wrote to memory of 3516 4888 iryn.exe 72 PID 4888 wrote to memory of 3696 4888 iryn.exe 71 PID 4888 wrote to memory of 3696 4888 iryn.exe 71 PID 4888 wrote to memory of 3696 4888 iryn.exe 71 PID 4888 wrote to memory of 3696 4888 iryn.exe 71 PID 4888 wrote to memory of 3696 4888 iryn.exe 71 PID 4888 wrote to memory of 4648 4888 iryn.exe 68 PID 4888 wrote to memory of 4648 4888 iryn.exe 68 PID 4888 wrote to memory of 4648 4888 iryn.exe 68 PID 4888 wrote to memory of 4648 4888 iryn.exe 68 PID 4888 wrote to memory of 4648 4888 iryn.exe 68 PID 4888 wrote to memory of 440 4888 iryn.exe 78 PID 4888 wrote to memory of 440 4888 iryn.exe 78 PID 4888 wrote to memory of 440 4888 iryn.exe 78 PID 4888 wrote to memory of 440 4888 iryn.exe 78 PID 4888 wrote to memory of 440 4888 iryn.exe 78 PID 440 wrote to memory of 2288 440 1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe 82
Processes
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C:\Windows\system32\sihost.exesihost.exe1⤵PID:2384
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc1⤵PID:2456
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵PID:3424
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵PID:4648
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵PID:3696
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C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca1⤵PID:3516
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵PID:3364
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}1⤵PID:3272
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc1⤵PID:2780
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:2484
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C:\Users\Admin\AppData\Local\Temp\1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe"C:\Users\Admin\AppData\Local\Temp\1a252aca8dd53842529529aff8eafa6ccb495a7c7efd0ef7b421bb8d34261b38.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:440 -
C:\Users\Admin\AppData\Roaming\Yrxae\iryn.exe"C:\Users\Admin\AppData\Roaming\Yrxae\iryn.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4888
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\LEO34A7.bat"3⤵PID:2288
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C:\Windows\system32\taskhostw.exetaskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}1⤵PID:2756
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
303B
MD57daa21406a05f4f0bac259152c29299d
SHA15c5e61ee71bdfaff34dfd116001894bd307b5073
SHA256674e52e892302c608159467017741a9996cd8af55396e08277f86e5f62a73985
SHA5128b52dbae03c8cb653b844126aad2687fffdd26a6561934d73bea4bfa302a04be705e0a2da019796dbd3638d9fe9f833eeb0c2628539403d775ddbaed7944d29e
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Filesize
296KB
MD5103661c12a3edea200cdb39a93baa7a8
SHA15d00165b7dd962c6b60b075c2072571eb9c068ee
SHA256f678f6c34cdd23baec1cfeffe4c64ebfbe169b6cec746797a9c4040e75f2f6a7
SHA512c673dfcadfd9fdf49ae5b9f778d169f44154a6953208581b60798723434f74dd581f81da7d4087c00496c5342f5c4dcf621db94d2e7185c130ac54edb48cee44
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Filesize
296KB
MD5103661c12a3edea200cdb39a93baa7a8
SHA15d00165b7dd962c6b60b075c2072571eb9c068ee
SHA256f678f6c34cdd23baec1cfeffe4c64ebfbe169b6cec746797a9c4040e75f2f6a7
SHA512c673dfcadfd9fdf49ae5b9f778d169f44154a6953208581b60798723434f74dd581f81da7d4087c00496c5342f5c4dcf621db94d2e7185c130ac54edb48cee44