Overview
overview
7Static
static
3MortarCalc-Setup.exe
windows10-2004-x64
7MortarCalc-Setup.exe
windows11-21h2-x64
7$PLUGINSDI...nu.dll
windows10-2004-x64
3$PLUGINSDI...nu.dll
windows11-21h2-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows11-21h2-x64
3$PLUGINSDI...gs.dll
windows10-2004-x64
3$PLUGINSDI...gs.dll
windows11-21h2-x64
3$PLUGINSDI...ls.dll
windows10-2004-x64
3$PLUGINSDI...ls.dll
windows11-21h2-x64
3$TEMP/Micr...up.exe
windows10-2004-x64
6$TEMP/Micr...up.exe
windows11-21h2-x64
6MORTARCALC.exe
windows10-2004-x64
6MORTARCALC.exe
windows11-21h2-x64
6uninstall.exe
windows10-2004-x64
7uninstall.exe
windows11-21h2-x64
7$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...LL.dll
windows11-21h2-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows11-21h2-x64
3$PLUGINSDI...ls.dll
windows10-2004-x64
3$PLUGINSDI...ls.dll
windows11-21h2-x64
3Analysis
- max time kernel
149s - max time network
148s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
05/06/2026, 03:20
Static task
static1
Behavioral task
behavioral1
Sample
MortarCalc-Setup.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
MortarCalc-Setup.exe
Resource
win11-20260513-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/StartMenu.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/StartMenu.dll
Resource
win11-20260513-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/System.dll
Resource
win11-20260513-en
Behavioral task
behavioral7
Sample
$PLUGINSDIR/nsDialogs.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral8
Sample
$PLUGINSDIR/nsDialogs.dll
Resource
win11-20260513-en
Behavioral task
behavioral9
Sample
$PLUGINSDIR/nsis_tauri_utils.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral10
Sample
$PLUGINSDIR/nsis_tauri_utils.dll
Resource
win11-20260513-en
Behavioral task
behavioral11
Sample
$TEMP/MicrosoftEdgeWebview2Setup.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral12
Sample
$TEMP/MicrosoftEdgeWebview2Setup.exe
Resource
win11-20260513-en
Behavioral task
behavioral13
Sample
MORTARCALC.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral14
Sample
MORTARCALC.exe
Resource
win11-20260513-en
Behavioral task
behavioral15
Sample
uninstall.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral16
Sample
uninstall.exe
Resource
win11-20260513-en
Behavioral task
behavioral17
Sample
$PLUGINSDIR/LangDLL.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral18
Sample
$PLUGINSDIR/LangDLL.dll
Resource
win11-20260513-en
Behavioral task
behavioral19
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral20
Sample
$PLUGINSDIR/System.dll
Resource
win11-20260513-en
Behavioral task
behavioral21
Sample
$PLUGINSDIR/nsis_tauri_utils.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral22
Sample
$PLUGINSDIR/nsis_tauri_utils.dll
Resource
win11-20260513-en
General
- Target MortarCalc-Setup.exe
- Size 2.3MB
- Sample260605-dvtffaby5r
- SHA256 39e9dbabd78c1ddfcdf08624323ef7f6c61b89d7ada7217f6f83a8b6940b438e
- MD5 afe2bb35f0a618a556e2a05b95a38c9d
- SHA1 c01b79211d8c462460a86d4fee00b5a4801370b9
- SHA512 6014ddc501a1c11e1a23f8af85487bcbdca03e34e00744120d2a6b573b43ee83cc4010a004e0a1eab59cf19cb9da3c768f0d40c9ee709f41c9e2e67263924e2e
- SSDEEP 49152:h92c9ZU04zjCoOlhjY7MBkE12/tpd2lhQ37HxYaWrsvdPo:h92mZU7Co2fl2172M12
- TLSH T170B5330117ACD09AC6221D33AD33A7733DC5C8355052760AA3BA490FBFB47BD5A99B4B
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Loads dropped DLL 3 IoCs
pid Process 984 MortarCalc-Setup.exe 984 MortarCalc-Setup.exe 984 MortarCalc-Setup.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 1 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 MortarCalc-Setup.exe
Processes
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\nsiE16.tmp\StartMenu.dll
- Size 7KB
- SHA256 42dd4dda3249a94e32e20f76eaffae784a5475ed00c60ef0197c8a2c1ccd2fb7
- MD5 d070f3275df715bf3708beff2c6c307d
- SHA1 93d3725801e07303e9727c4369e19fd139e69023
- SHA512 fcaf625dac4684dad33d12e3a942b38489ecc90649eee885d823a932e70db63c1edb8614b9fa8904d1710e9b820e82c5a37aeb8403cf21cf1e3692f76438664d
- SSDEEP 96:h8dPIKJhMuhik+CfoEwknt6io8zv+qy5/utta/H3lkCTcaqHCI:yZIKXgk+cx6QYFkAXlncviI
- TLSH T1CCF1C7B6F3D10673F9AB427428232F221B1AF5215765C1AB450316CE7661CE3FD34B21
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\nsiE16.tmp\System.dll
- Size 12KB
- SHA256 8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
- MD5 cff85c549d536f651d4fb8387f1976f2
- SHA1 d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
- SHA512 531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88
- SSDEEP 192:Zjvco0qWTlt70m5Aj/lQ0sEWD/wtYbBHFNaDybC7y+XBz0QPi:FHQlt70mij/lQRv/9VMjzr
- TLSH T126426B129BB089F2F591583814667F2A6FBE9C5D27F50563CFE304D63D212CB983A283
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\nsiE16.tmp\nsDialogs.dll
- Size 9KB
- SHA256 56b96add1978b1abba286f7f8982b0efbe007d4a48b3ded6a4d408e01d753fe2
- MD5 6c3f8c94d0727894d706940a8a980543
- SHA1 0d1bcad901be377f38d579aafc0c41c0ef8dcefd
- SHA512 2094f0e4bb7c806a5ff27f83a1d572a5512d979eefda3345baff27d2c89e828f68466d08c3ca250da11b01fc0407a21743037c25e94fbe688566dd7deaebd355
- SSDEEP 96:o0svUu3Uy+sytcS8176b+XR8pCHFcMcxSgB5PKtAtgt+Nt+rnt3DVEB3YcNqkzfS:o0svWyNO81b8pCHFcM0PuAgkOyuIFc
- TLSH T17012F992E6A450B3C5D6533B35AA2F2DCBBD5325B0926C00C7738E4D39395B66E38353
- MD5 SHA1 SHA512 SSDEEP TLSH