Overview
overview
10Static
static
3Boostrappl...er.exe
windows10-2004-x64
10Boostrappl...er.exe
windows11-21h2-x64
10Boostrappl...che.js
windows10-2004-x64
3Boostrappl...che.js
windows11-21h2-x64
3Boostrappl...ng.dll
windows10-2004-x64
3Boostrappl...ng.dll
windows11-21h2-x64
3Boostrappl...ng.dll
windows10-2004-x64
3Boostrappl...ng.dll
windows11-21h2-x64
3Boostrappl...ng.dll
windows10-2004-x64
3Boostrappl...ng.dll
windows11-21h2-x64
3Analysis
- 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
27/05/2026, 11:14
Static task
static1
Behavioral task
behavioral1
Sample
BoostrapplerNET/Bootsrappper.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
BoostrapplerNET/Bootsrappper.exe
Resource
win11-20260513-en
Behavioral task
behavioral3
Sample
BoostrapplerNET/Workspace/373f5d42922fa6b5ac57adbb41b8015f-cache.js
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
BoostrapplerNET/Workspace/373f5d42922fa6b5ac57adbb41b8015f-cache.js
Resource
win11-20260513-en
Behavioral task
behavioral5
Sample
BoostrapplerNET/runtimes/app.asar.unpacked/node_modules/btime/binding.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral6
Sample
BoostrapplerNET/runtimes/app.asar.unpacked/node_modules/btime/binding.dll
Resource
win11-20260513-en
Behavioral task
behavioral7
Sample
BoostrapplerNET/runtimes/app.asar.unpacked/node_modules/get-fonts/binding.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral8
Sample
BoostrapplerNET/runtimes/app.asar.unpacked/node_modules/get-fonts/binding.dll
Resource
win11-20260513-en
Behavioral task
behavioral9
Sample
BoostrapplerNET/runtimes/app.asar.unpacked/node_modules/vibrancy-win/binding.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral10
Sample
BoostrapplerNET/runtimes/app.asar.unpacked/node_modules/vibrancy-win/binding.dll
Resource
win11-20260513-en
General
- Target BoostrapplerNET/Bootsrappper.exe
- Size 1.5MB
- Sample260527-nb5dpscs4l
- SHA256 cdd16fc0a2bf1499ba815bc95288456e46c7245b64c9d06033f2c61eb06900f5
- MD5 b54877136bd689c817ddce19c6d51787
- SHA1 85014d9372d9d70ccd1a57bc018b985564ac5e49
- SHA512 6b3d6d29145de291303119c6b38b4438083c1e87b11315dc86bb2e62fb07fcea93e95a0e28dce652f76ff95ff68b5568be53082e82b93fcb5423fde7068f8107
- SSDEEP 24576:Zg18kF36aZTWynBjQ6OgLP88WoSSQxf0QVD1m5:ZW8s3xZaEYgLPN8VD1i
- TLSH T1577559477C9064BAD5FA923188B5A2D17A31F8490F3127C33B51B6BA2E773D44E39398
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
-
remus_stealer
-
4ddc2f013cf6edc40365c02fba709980
-
http://intelvissions.com:5747
-
http://woodfez.biz:7582
-
http://myrtler.biz:9549
Signatures
- Family: Remus
Remus is a stealer written in C++.
- Detects Remus stealer 1 IoCs
resource yara_rule behavioral2/memory/2456-1-0x0000000140000000-0x000000014003D000-memory.dmp family_remus_stealer - Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2456 Bootsrappper.exe 2456 Bootsrappper.exe 2456 Bootsrappper.exe 2456 Bootsrappper.exe 2456 Bootsrappper.exe 2456 Bootsrappper.exe