General
- Target 6FC-5B-20-FA-7C
- Size 233KB
- Sample261029-petxtazse1
- SHA256 144057e378c3f1f6eb33dc53e9ab6ebe2855f07e1ea2cdb0841c52383f710203
- MD5 b06ea25d716001f2dd7ede59044c2e28
- SHA1 442a4406ee7664be3f3335784494985908116350
- SHA512 032701eebf926dc00f1fc7834b2f9ea3f780049827c945ac8b523462b413a236e24a1220202886a1b14e5b25b6bc2d97186d2fb7dd1e07736fc8fd881dc38461
- SSDEEP 6144:a//UQanPFUT9haqowC1JiJUrF2XEU8+j0nVCoNfCvqUs/zbD:xPlNfFU+
- TLSH T1AE34932439C0A665168DDCB72C410C1DAAC9F537E38B684D79CF55C5AF87AB887EC838
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
6FC-5B-20-FA-7C.ps1
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
6FC-5B-20-FA-7C.ps1
Resource
win11ltsc2024-20260911-en
Malware Config
Extracted
-
acrstealer
-
4.5.3-alpha1
-
smtp.briskgrab.cc
-
cloudflare.com
-
guids
019fd851-d0e2-7805-ae09-2dd1daa78960
f1575b64-8492-4e8b-b102-4d26e8c70371
-
user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.2.6187.130 Safari/537.36
Targets
-
- Target 6FC-5B-20-FA-7C
- Size 233KB
- SHA256 144057e378c3f1f6eb33dc53e9ab6ebe2855f07e1ea2cdb0841c52383f710203
- MD5 b06ea25d716001f2dd7ede59044c2e28
- SHA1 442a4406ee7664be3f3335784494985908116350
- SHA512 032701eebf926dc00f1fc7834b2f9ea3f780049827c945ac8b523462b413a236e24a1220202886a1b14e5b25b6bc2d97186d2fb7dd1e07736fc8fd881dc38461
- SSDEEP 6144:a//UQanPFUT9haqowC1JiJUrF2XEU8+j0nVCoNfCvqUs/zbD:xPlNfFU+
- TLSH T1AE34932439C0A665168DDCB72C410C1DAAC9F537E38B684D79CF55C5AF87AB887EC838
- MD5 SHA1 SHA512 SSDEEP TLSH
Family: ACR stealer,GrMsk
ACR stealer (aka GrMsk stealer) is an infostealer written in C++.
Suspicious use of NtCreateUserProcessOtherParentProcess
Badlisted process makes network request
Network request originating from process or tool commonly abused by malware.
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
MITRE ATT&CK Enterprise v16
Privilege Escalation
Access Token Manipulation
1Parent PID Spoofing
1Process Injection
1Defense Evasion
Access Token Manipulation
1Parent PID Spoofing
1Process Injection
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
3Credentials In Files
3