Analysis
- max time kernel
149s - max time network
95s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
01/06/2026, 12:17
Behavioral task
behavioral1
Sample
update4_21[F].exe
Resource
win10v2004-20260513-en
4 signatures
150 seconds
General
- Target update4_21[F].exe
- Size 1.4MB
- Sample260601-pgcfjsdt4r
- SHA256 da0d3c11ade5c1d86284a1056e593dc1e0aa8ab11aa9a032ed8448c5218e15a4
- MD5 30584f45fe6749a3fd24d3ae23e79400
- SHA1 5576cecbc06e300e76d6b287dde606e4bd5014a8
- SHA512 db31f6406fe94a53d3f4c69cb4efe5e57ae55a2f6d23307e541fd218d3ea70edb6c41a3f0c18e589b7687fe6300cde2ae40cfa470ff298b3b273091ea635af60
- SSDEEP 24576:5nabI9NOWf71a2PDdmYzfcnvXiqj/BtPT2MB2z+0ewWDR1heekxqvkS3rJQBtUkq:5ak9Xj4cDUYbc/FzSzcZfinXBgJ
- TLSH T1AD653303D6EA513DF4B3A6704D7FC104497B766A543E2058A2AF294C1F76AF1B10BBA3
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4140 update4_21[F].tmp - System Location Discovery: System Language Discovery 1 TTPs 2 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 update4_21[F].exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language update4_21[F].tmp - Inno Setup is an open-source installation builder for Windows applications. 2 IoCs
Inno Setup installer
resource yara_rule behavioral2/memory/2532-1-0x0000000000400000-0x0000000000414000-memory.dmp innosetup behavioral2/memory/2532-15-0x0000000000400000-0x0000000000414000-memory.dmp innosetup - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2532 wrote to memory of 4140 2532 update4_21[F].exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\update4_21[F].exe"C:\Users\Admin\AppData\Local\Temp\update4_21[F].exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2532 -
C:\Users\Admin\AppData\Local\Temp\is-D6U4C.tmp\update4_21[F].tmp"C:\Users\Admin\AppData\Local\Temp\is-D6U4C.tmp\update4_21[F].tmp" /SL5="$90056,1269402,54272,C:\Users\Admin\AppData\Local\Temp\update4_21[F].exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4140
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\is-D6U4C.tmp\update4_21[F].tmp
- Size 688KB
- SHA256 c5177fdc6031728e10141745cd69edbc91c92d14411a2dec6e8e8caa4f74ab28
- MD5 c765336f0dcf4efdcc2101eed67cd30c
- SHA1 fa0279f59738c5aa3b6b20106e109ccd77f895a7
- SHA512 06a67ac37c20897967e2cad453793a6ef1c7804d4c578404f845daa88c859b15b0acb51642e6ad23ca6ba6549b02d5f6c98b1fa402004bdbf9d646abab7ec891
- SSDEEP 12288:YRObekMtkfohrPUs37uzHnA6zg5cIsalHERjUrNN/RQ9wgUT5EDExyc:yObekYkfohrP337uzHnA6cHswHE/6gU3
- TLSH T130E47C32F2A08837D1B31E789D1B86955936BE103E38A59737E81F4C4F796817A273D2
- MD5 SHA1 SHA512 SSDEEP TLSH