acrstealer | 923c28b4d0f8a2ed0d33e6a747d9b39818d5123d3e378fd1d72ed31a75dd5623

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
08/09/2026, 12:24

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General

Target
tool_0e649eaf.exe
Size 5.5MB
Sample260908-plefpsfd54
SHA256 923c28b4d0f8a2ed0d33e6a747d9b39818d5123d3e378fd1d72ed31a75dd5623
MD5 2c66cf69bc75cbc9b4a2f8fed4490636
SHA1 c211cd5eabf393051c5069fff67856472f9b9f94
SHA512 336169a11657c10f65c81448df0f15d007cded0f30b05bea55cb49e7de955c5560c3a7c67aae7a082d45fcc48ae4ee2927fd2d82f25c57c7edc9c9863403ca66
SSDEEP 49152:Dlu7z5KYGZMte29mqkdFPRo0A6Yz2mbm1XIoj1W9bPjvhzlYt47Vhl5j5cQYDOO/:Dl
TLSH
T120468562684F23CFD49B0536FB12E0B2956F9873E78E52D9848B503E39D90EE540EB74
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery acrstealer spyware stealer

Malware Config

Extracted

Family

acrstealer

Version

4.2.4-alpha2

pop.aethernetworking.cc

Decoy

akamaiedge.net

Attributes

guids
a6cdcc0b-6b38-49d6-9672-20be114d9eba

019f4713-f6b3-782b-93af-1da1e9cbfdc2
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

xor.hex

Signatures

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

Detects ACRStealer V4.x 16 IoCs

resource	yara_rule
behavioral1/memory/2136-0-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-5-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-6-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-32-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-57-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-85-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-86-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-118-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-341-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-472-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-477-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-478-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-479-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-480-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-481-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3
behavioral1/memory/2136-482-0x00000000030F0000-0x00000000031A3000-memory.dmp	family_acrstealer_v3

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 2136 created 3300	2136	tool_0e649eaf.exe	56

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
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 NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2136	tool_0e649eaf.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2136	tool_0e649eaf.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	tool_0e649eaf.exe

System Time Discovery 1 TTPs 1 IoCs

Adversary may gather the system time and/or time zone settings from a local or remote system.

discovery

System Time Discovery

T1124

pid	Process
1112	chrome.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	chrome.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
544	chrome.exe
544	chrome.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe
2136	tool_0e649eaf.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2136	tool_0e649eaf.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs

pid	Process
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	544	chrome.exe
Token: SeCreatePagefilePrivilege	544	chrome.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe
544	chrome.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 544	2136	tool_0e649eaf.exe	85
PID 544 wrote to memory of 3984	544	chrome.exe	86
PID 544 wrote to memory of 4844	544	chrome.exe	87
PID 544 wrote to memory of 4844	544	chrome.exe	87
PID 544 wrote to memory of 1112	544	chrome.exe	88
PID 544 wrote to memory of 1204	544	chrome.exe	89
PID 544 wrote to memory of 1204	544	chrome.exe	89
PID 544 wrote to memory of 2124	544	chrome.exe	90
PID 544 wrote to memory of 2124	544	chrome.exe	90
PID 544 wrote to memory of 4660	544	chrome.exe	91
PID 544 wrote to memory of 4660	544	chrome.exe	91
PID 544 wrote to memory of 1876	544	chrome.exe	93
PID 544 wrote to memory of 1876	544	chrome.exe	93
PID 544 wrote to memory of 1816	544	chrome.exe	94
PID 544 wrote to memory of 1816	544	chrome.exe	94
PID 544 wrote to memory of 5100	544	chrome.exe	95
PID 544 wrote to memory of 5100	544	chrome.exe	95
PID 544 wrote to memory of 2964	544	chrome.exe	96
PID 544 wrote to memory of 2964	544	chrome.exe	96

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3300
- C:\Users\Admin\AppData\Local\Temp\tool_0e649eaf.exe
  "C:\Users\Admin\AppData\Local\Temp\tool_0e649eaf.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2136
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --no-first-run --disable-fre --no-default-browser-check --disable-background-networking --disable-sync --disable-gpu --mute-audio --new-window
  2⤵
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:544
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=140.0.7339.81 --initial-client-data=0xf8,0xfc,0x100,0xd4,0x104,0x7ffcfa7bc728,0x7ffcfa7bc734,0x7ffcfa7bc740
    3⤵
    PID:3984
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-pre-read-main-dll --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADgAAAIAAAAAAAAAAAAAGAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --use-gl=angle --use-angle=swiftshader-webgl --metrics-shmem-handle=1744,i,18411591780536694904,15390348577084425395,262144 --field-trial-handle=2012,i,13887867899916037535,2675896021990092502,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2008 /prefetch:2
    3⤵
    PID:4844
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mute-audio --force-high-res-timeticks=disabled --metrics-shmem-handle=1616,i,11418036022362366202,15509639207285996709,524288 --field-trial-handle=2012,i,13887867899916037535,2675896021990092502,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2244 /prefetch:3
    3⤵
    - System Time Discovery
    PID:1112
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --mute-audio --force-high-res-timeticks=disabled --metrics-shmem-handle=2320,i,4782815538342736358,12726707812903379848,524288 --field-trial-handle=2012,i,13887867899916037535,2675896021990092502,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2472 /prefetch:8
    3⤵
    PID:1204
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --metrics-shmem-handle=3156,i,2490795944138128989,12958588994386261843,2097152 --field-trial-handle=2012,i,13887867899916037535,2675896021990092502,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3172 /prefetch:1
    3⤵
    PID:2124
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --metrics-shmem-handle=3192,i,711605190091637402,11524624720867326576,2097152 --field-trial-handle=2012,i,13887867899916037535,2675896021990092502,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3200 /prefetch:1
    3⤵
    PID:4660
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --extension-process --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --metrics-shmem-handle=4184,i,2963280991422628448,11992466712931653922,2097152 --field-trial-handle=2012,i,13887867899916037535,2675896021990092502,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4188 /prefetch:2
    3⤵
    PID:1876
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --metrics-shmem-handle=3144,i,669259680215901267,7863859349082698688,2097152 --field-trial-handle=2012,i,13887867899916037535,2675896021990092502,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4544 /prefetch:1
    3⤵
    PID:1816
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mute-audio --force-high-res-timeticks=disabled --metrics-shmem-handle=4176,i,997756857008901440,8791663910332484824,524288 --field-trial-handle=2012,i,13887867899916037535,2675896021990092502,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4788 /prefetch:8
    3⤵
    PID:5100
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mute-audio --force-high-res-timeticks=disabled --metrics-shmem-handle=4932,i,1439760702894796422,9652076767208679609,524288 --field-trial-handle=2012,i,13887867899916037535,2675896021990092502,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4960 /prefetch:8
    3⤵
    PID:2964

C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
1⤵
PID:1776

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Time Discovery

T1124

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

SCT Auditing Pending Reports

Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports
Size 2B
SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
MD5 d751713988987e9331980363e24189ce
SHA1 97d170e1550eee4afc0af065b78cda302a97674c
SHA512 b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af
MD5 SHA1 SHA512

Submit Download

Local State

Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
Size 115KB
SHA256 6580c61d815487e21733a419eb3dabc527210e21bf71c838361310aa1eb4b3c4
MD5 978e382da59cfc259f9ec82e1ba6e233
SHA1 140fb2f0b746d1c806c4caf8a6ad4a79fb9744dc
SHA512 6cce61a8b7afc7d771b5c6bd4a9134f8629391246b89385f41ea069c719dba57891bb3d84c9bcd7c83736fbfbfbdd0f45867d6dfa57c1bccfd32bbbc1335fcf9
SSDEEP 3072:QGm7D5Lk17ox1tIpud63U8BehbCBi9fTrMK:bm7Rkm1tYpBeh2BAoK
TLSH
T14CC3123B5D65E9779979B70EB08E0B1F1EF149A2D920DE92C8D86A0437EA7CD0A04D34
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2136-85-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-118-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-5-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-32-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-57-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-0-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-86-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-6-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-341-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-472-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-477-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-478-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-479-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-480-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-481-0x00000000030F0000-0x00000000031A3000-memory.dmp

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memory/2136-482-0x00000000030F0000-0x00000000031A3000-memory.dmp

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