Analysis
- max time kernel
150s - max time network
115s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
31/08/2026, 13:13
Behavioral task
behavioral1
Sample
Followupsheet Setup.exe
Resource
win10v2004-20260513-en
4 signatures
150 seconds
General
- Target Followupsheet Setup.exe
- Size 5.6MB
- Sample260831-qgh4rsseqc
- SHA256 d0798a989bbd25d302543c65bffdeb7442a858234e6df2e96d12effa05602cb8
- MD5 7b3458b0c8244717a0dee57098c90c74
- SHA1 21a8b921058e072a0245b20e3c706b27c382bf36
- SHA512 3223160ff3399a72eb2afe4a7aba4741158358f55cb2ca6b7f4a9ce05bd63d1f13d177f6110a7fc007f83d9d16689406327e02e33bd6d779d627fc0e1564be8b
- SSDEEP 98304:p5OPNLocmalLhdmkoN5YpKwl1DGFytzDjvjvfayKMuyHOftu5zrr60A:jdyLh3a5CKkgwb3I1s20A
- TLSH T15A46123BB28B653EE06E0A367A77E110183B7661A4178C46A6F4C85CCF561701E3F79B
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3436 Followupsheet Setup.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 Followupsheet Setup.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Followupsheet Setup.tmp - Inno Setup is an open-source installation builder for Windows applications. 2 IoCs
Inno Setup installer
resource yara_rule behavioral2/memory/1060-1-0x0000000000E50000-0x0000000000F53000-memory.dmp innosetup behavioral2/memory/1060-8-0x0000000000E50000-0x0000000000F53000-memory.dmp innosetup - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1060 wrote to memory of 3436 1060 Followupsheet Setup.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\Followupsheet Setup.exe"C:\Users\Admin\AppData\Local\Temp\Followupsheet Setup.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1060 -
C:\Users\Admin\AppData\Local\Temp\is-QPUI77CPX3.tmp\Followupsheet Setup.tmp"C:\Users\Admin\AppData\Local\Temp\is-QPUI77CPX3.tmp\Followupsheet Setup.tmp" /SL5="$4011A,4600484,1000448,C:\Users\Admin\AppData\Local\Temp\Followupsheet Setup.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3436
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\is-QPUI77CPX3.tmp\Followupsheet Setup.tmp
- Size 4.3MB
- SHA256 02306010176bc4ad65c644e3e455dfb5e7fd995017887db0dac73afe679dccc6
- MD5 b5565d164f83dda98f6121325ea4b0a4
- SHA1 c470e8545ed2ab448684eb99e4091be9a102ff7a
- SHA512 14d0bf92e90fc594778fa04047e98bdc3389c7c622f98fc9b2237665c7fc695cf13d6fb5c3a9bb933b5dcc3efcaf4d8e30990084c00e60efab6d62ec5264d72c
- SSDEEP 98304:ZYU5hnuOajWwMPdCpepI3GrwrA+Jz333aNO:bxuHjWfZIz1
- TLSH T16D268F13B348753EE4671A3A583FA280983F7A213A26CD4F6BF40D5C8F396416D2A757
- MD5 SHA1 SHA512 SSDEEP TLSH