acrstealer | 72abb09c4e65fe2369c3c2e328617bb44ddc12cad24181a7e5c53169b05fb543

Analysis

max time kernel
148s
max time network
141s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
07/08/2026, 07:17

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General

Target
72abb09c4e65fe2369c3c2e328617bb44ddc12cad24181a7e5c53169b05fb543.exe
Size 2.8MB
Sample260807-h4bzzazcmd
SHA256 72abb09c4e65fe2369c3c2e328617bb44ddc12cad24181a7e5c53169b05fb543
MD5 9a331c1e0627cf2905fa262d141fc8aa
SHA1 d6a949324969f81cf2c8f533882b1c5dc468e74a
SHA512 f105ae2e619fa4a486c4cb637f26c0fd0019be6ac3a50e38cb816afd497368a0c1794b25e29a4b0d6cf4f50bde520216a967eb8db4e7df83dcbf569bda4b148a
SSDEEP 49152:thuXz+rCdsGNUitwLme+eHBCeY34Py8wYK1q1y:thuj+rCdsGeitwLmvh3zC8
TLSH
T194D56B50AEDAD5F6D942373444E2E1AF166895077B7DFBE38934A729AC3F040092BBD0
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery acrstealer stealer

Malware Config

Extracted

Family

acrstealer

he.packetcore.cc

Decoy

microsoft.com

Attributes

guids
ba71eb1d-5aa8-45de-ace7-3c8ae539f1cf

019e6f53-8b34-79db-afa4-73532377e753
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

add.hex

Signatures

Family: ACR stealer,GrMsk
ACR stealer (aka GrMsk stealer) is an infostealer written in C++.
stealer acrstealer

Detects ACRStealer V4.x 2 IoCs

resource	yara_rule
behavioral2/memory/4836-0-0x0000000031780000-0x000000003185A000-memory.dmp	family_acrstealer_v3
behavioral2/memory/4836-1-0x0000000031780000-0x000000003185A000-memory.dmp	family_acrstealer_v3

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4836	72abb09c4e65fe2369c3c2e328617bb44ddc12cad24181a7e5c53169b05fb543.exe

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	72abb09c4e65fe2369c3c2e328617bb44ddc12cad24181a7e5c53169b05fb543.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4836	72abb09c4e65fe2369c3c2e328617bb44ddc12cad24181a7e5c53169b05fb543.exe
4836	72abb09c4e65fe2369c3c2e328617bb44ddc12cad24181a7e5c53169b05fb543.exe

C:\Users\Admin\AppData\Local\Temp\72abb09c4e65fe2369c3c2e328617bb44ddc12cad24181a7e5c53169b05fb543.exe
"C:\Users\Admin\AppData\Local\Temp\72abb09c4e65fe2369c3c2e328617bb44ddc12cad24181a7e5c53169b05fb543.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4836

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4836-0-0x0000000031780000-0x000000003185A000-memory.dmp

Download

memory/4836-1-0x0000000031780000-0x000000003185A000-memory.dmp

Download