acrstealer | 923c28b4d0f8a2ed0d33e6a747d9b39818d5123d3e378fd1d72ed31a75dd5623

Analysis

max time kernel
150s
max time network
136s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-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 9 IoCs

resource	yara_rule
behavioral2/memory/2652-0-0x0000000003190000-0x0000000003243000-memory.dmp	family_acrstealer_v3
behavioral2/memory/2652-6-0x0000000003190000-0x0000000003243000-memory.dmp	family_acrstealer_v3
behavioral2/memory/2652-5-0x0000000003190000-0x0000000003243000-memory.dmp	family_acrstealer_v3
behavioral2/memory/2652-39-0x0000000003190000-0x0000000003243000-memory.dmp	family_acrstealer_v3
behavioral2/memory/2652-40-0x0000000003190000-0x0000000003243000-memory.dmp	family_acrstealer_v3
behavioral2/memory/2652-42-0x0000000003190000-0x0000000003243000-memory.dmp	family_acrstealer_v3
behavioral2/memory/2652-41-0x0000000003190000-0x0000000003243000-memory.dmp	family_acrstealer_v3
behavioral2/memory/2652-44-0x0000000003190000-0x0000000003243000-memory.dmp	family_acrstealer_v3
behavioral2/memory/2652-43-0x0000000003190000-0x0000000003243000-memory.dmp	family_acrstealer_v3

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 2652 created 5688	2652	tool_0e649eaf.exe	81

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
2652	tool_0e649eaf.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2652	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
2612	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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{d3162b92-9365-467a-956b-92703aca08af}\Instance\	tool_0e649eaf.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
4056	chrome.exe
4056	chrome.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe
2652	tool_0e649eaf.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2652	tool_0e649eaf.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs

pid	Process
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4056	chrome.exe
Token: SeCreatePagefilePrivilege	4056	chrome.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe
4056	chrome.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 4056	2652	tool_0e649eaf.exe	89
PID 4056 wrote to memory of 5076	4056	chrome.exe	90
PID 4056 wrote to memory of 3436	4056	chrome.exe	91
PID 4056 wrote to memory of 3436	4056	chrome.exe	91
PID 4056 wrote to memory of 2612	4056	chrome.exe	92
PID 4056 wrote to memory of 4652	4056	chrome.exe	93
PID 4056 wrote to memory of 4652	4056	chrome.exe	93
PID 4056 wrote to memory of 3348	4056	chrome.exe	95
PID 4056 wrote to memory of 3348	4056	chrome.exe	95
PID 4056 wrote to memory of 1560	4056	chrome.exe	96
PID 4056 wrote to memory of 1560	4056	chrome.exe	96
PID 4056 wrote to memory of 1968	4056	chrome.exe	97
PID 4056 wrote to memory of 1968	4056	chrome.exe	97
PID 4056 wrote to memory of 1380	4056	chrome.exe	98
PID 4056 wrote to memory of 1380	4056	chrome.exe	98
PID 4056 wrote to memory of 464	4056	chrome.exe	99
PID 4056 wrote to memory of 464	4056	chrome.exe	99

C:\Windows\explorer.exe
explorer.exe /LOADSAVEDWINDOWS
1⤵
PID:5688
- 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
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2652
- 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:4056
- - 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=0x128,0x12c,0x130,0xa8,0x134,0x7ff8f3fcc728,0x7ff8f3fcc734,0x7ff8f3fcc740
    3⤵
    PID:5076
- - 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=1684,i,6119351934186840990,10552448151129610496,262144 --field-trial-handle=1940,i,17313959919493937698,6168273903311588668,262144 --variations-seed-version --mojo-platform-channel-handle=1936 /prefetch:2
    3⤵
    PID:3436
- - 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=1348,i,227637004787719412,7730515373294836375,524288 --field-trial-handle=1940,i,17313959919493937698,6168273903311588668,262144 --variations-seed-version --mojo-platform-channel-handle=2116 /prefetch:11
    3⤵
    - System Time Discovery
    PID:2612
- - 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=2256,i,6054469433319765364,12973471526825877101,524288 --field-trial-handle=1940,i,17313959919493937698,6168273903311588668,262144 --variations-seed-version --mojo-platform-channel-handle=2232 /prefetch:13
    3⤵
    PID:4652
- - 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=3144,i,2647065442062758076,16040182294611199314,2097152 --field-trial-handle=1940,i,17313959919493937698,6168273903311588668,262144 --variations-seed-version --mojo-platform-channel-handle=3156 /prefetch:1
    3⤵
    PID:3348
- - 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=3164,i,18110460503290119558,5671482767102022573,2097152 --field-trial-handle=1940,i,17313959919493937698,6168273903311588668,262144 --variations-seed-version --mojo-platform-channel-handle=3172 /prefetch:1
    3⤵
    PID:1560
- - 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=7 --metrics-shmem-handle=4596,i,905493053242604397,11200010581944901982,2097152 --field-trial-handle=1940,i,17313959919493937698,6168273903311588668,262144 --variations-seed-version --mojo-platform-channel-handle=4616 /prefetch:1
    3⤵
    PID:1968
- - 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=4772,i,12887138452559924126,13102030114542307681,524288 --field-trial-handle=1940,i,17313959919493937698,6168273903311588668,262144 --variations-seed-version --mojo-platform-channel-handle=4560 /prefetch:14
    3⤵
    PID:1380
- - 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=4928,i,9955429193974415841,4850829474095054738,524288 --field-trial-handle=1940,i,17313959919493937698,6168273903311588668,262144 --variations-seed-version --mojo-platform-channel-handle=4764 /prefetch:14
    3⤵
    PID:464

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:3168

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 4KB
SHA256 d436dbca76bfa178315cbe50255054f2b9bdc27f97bb53e876c21db31d8658fa
MD5 d13b7e272b88255bfcd543ed81fc3fa5
SHA1 8f3f33efa557e759250ffedfc60c1f682cbcd651
SHA512 5d4927d6dcb0683c08f391b87afea3f18b640d89ef37c10cec33df250c9f43a18565d196145cd2b21597bef420b80189d4dfc831c1b52da2a41e15f51a4104e5
SSDEEP 96:gC0d+cAOIt5aDVmufj7jcbRDotok5+CDaB6/dGyv95SZhbb2Jv4a:gC0LA/TE57cDUDpKUweSZhbKl
TLSH
T1F0A10871B4A95EB75DB5C684F4827E83DF68A117A9226F84D8DD1F0C10E70EC1382A27
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2652-0-0x0000000003190000-0x0000000003243000-memory.dmp

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memory/2652-6-0x0000000003190000-0x0000000003243000-memory.dmp

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memory/2652-5-0x0000000003190000-0x0000000003243000-memory.dmp

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memory/2652-39-0x0000000003190000-0x0000000003243000-memory.dmp

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memory/2652-40-0x0000000003190000-0x0000000003243000-memory.dmp

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memory/2652-42-0x0000000003190000-0x0000000003243000-memory.dmp

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memory/2652-41-0x0000000003190000-0x0000000003243000-memory.dmp

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memory/2652-44-0x0000000003190000-0x0000000003243000-memory.dmp

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memory/2652-43-0x0000000003190000-0x0000000003243000-memory.dmp

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