Analysis
- max time kernel
149s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
22/05/2026, 12:36
Behavioral task
behavioral1
Sample
tmp_rhyxrc1.exe
Resource
win10v2004-20260513-en
11 signatures
150 seconds
General
- Target tmp_rhyxrc1.exe
- Size 110KB
- Sample260522-psy4pabs5p
- SHA256 97a27c6c74e5f04ec9733cd68687328865a926c7495da87b88b56d8e5590822a
- MD5 e5c6aa63c7e23f8825ce3443d9e29677
- SHA1 6b118bd26d0ae30fd1bbe1e4d1aadca4ca2d0ece
- SHA512 dd09efa55b2d82b411ab443d2b6eb6d91ecc20ec3569ea0e66e6b4aa5d7269391710c1e344c510e89fb6fb6a72f019a11f02a460bc690b5faa5babe2d199ee56
- SSDEEP 1536:XiLOvRmmQegJfBbmAQ256/ZrwWnwqjhurmKFcxL8JQ2r0Ew:XiyvRmDLs/ZrwWJjAqGcRJ2hw
- TLSH T1B7B34B62F204E88BE817D8F69919CD3168A33DBD4890855E32D9BF6D58B3AD30459F0F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3340 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7393EF66 = "C:\\Users\\Admin\\AppData\\Roaming\\7393EF66\\bin.exe" winver.exe -
resource yara_rule behavioral1/memory/1988-0-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral1/files/0x000700000002456e-18.dat upx behavioral1/memory/3340-20-0x0000000000400000-0x000000000041E000-memory.dmp upx - Program crash 1 IoCs
pid pid_target Process procid_target 4460 4884 WerFault.exe 90 - System Location Discovery: System Language Discovery 1 TTPs 3 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 tmp_rhyxrc1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winver.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language bin.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4884 winver.exe 4884 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3212 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 28 IoCs
description pid Process Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE Token: SeShutdownPrivilege 3212 Explorer.EXE Token: SeCreatePagefilePrivilege 3212 Explorer.EXE - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4884 winver.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1988 wrote to memory of 4884 1988 tmp_rhyxrc1.exe 90 PID 4884 wrote to memory of 3212 4884 winver.exe 55 PID 3212 wrote to memory of 1680 3212 Explorer.EXE PID 3212 wrote to memory of 1680 3212 Explorer.EXE PID 1680 wrote to memory of 3340 1680 Process not Found 93 PID 1680 wrote to memory of 3340 1680 Process not Found 93 PID 4884 wrote to memory of 3060 4884 winver.exe 51
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:3060
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3212 -
C:\Users\Admin\AppData\Local\Temp\tmp_rhyxrc1.exe"C:\Users\Admin\AppData\Local\Temp\tmp_rhyxrc1.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1988 -
C:\Windows\SysWOW64\winver.exewinver3⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4884 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4884 -s 3524⤵
- Program crash
PID:4460
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C:\Users\Admin\AppData\Roaming\7393EF66\bin.exeC:\Users\Admin\AppData\Roaming\7393EF66\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3340
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4884 -ip 48841⤵PID:216
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\7393EF66\bin.exe
- Size 110KB
- SHA256 bbfc05b9c2aa77cb49dba084c0bc76c2d1cb85418e35f727f7f4c0ec78f1da1d
- MD5 435eab7ce4cbddfc62df16aa04874d8b
- SHA1 569600db3a0e984381b1df4d1bb5f65c39515541
- SHA512 431e5d4362be5e5ecdf26a5663bb72cb673a7c634b27d849a1fd229b533648fb11deb1a5e0cd3cb0575348432e7dc8c4cca8655dab6bbd3ccd0bdf5593aba468
- SSDEEP 1536:4iLOvRmmQegJfBbmAQ256/ZrwWnwqjhurmKFcxL8JQ2r0Ew:4iyvRmDLs/ZrwWJjAqGcRJ2hw
- TLSH T102B34B62F204E88BE817D8F69919CD3168A33DBD4890855E32D9BF6D58B3AD30459F0F
- MD5 SHA1 SHA512 SSDEEP TLSH