General
- Target LostInWinter Setup 2.1.1.exe.bad
- Size 85.9MB
- Sample260805-atlgnaba27
- SHA256 b1d3214d094f13957cf4cfaa04f6cbd5d621ddc5f4aee5a64d686740f063c76e
- MD5 9ec1867bf0b580abae462efa239b214c
- SHA1 fe96359803d7a4c2de4f900f95b0fc9d76e299f2
- SHA512 cd5f90618ac15c937f567305e7fe77f1fb2dbf96bdfa11623ca54b8511f61a0a37ff5587963fe441601f4eb97741bcadf669232a69fa03214b41a28a02aab880
- SSDEEP 1572864:cX+BWMFDe45kQsab5o6hDRVOl+7IQSnNa1hItzM1gMnOC6e/RsB65IFJKsKd3Iys:cOBFle459NjhDRVMJGOtzMpnf7R956Aa
- TLSH T15218335D2FC0E846E01DE2FF7A6623A11E59B9CB6BF3F257546C806E2C58770A940363
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
LostInWinter Setup 2.1.1.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
LostInWinter.exe
Resource
win10v2004-20260513-en
Malware Config
Targets
-
- Target LostInWinter Setup 2.1.1.exe.bad
- Size 85.9MB
- SHA256 b1d3214d094f13957cf4cfaa04f6cbd5d621ddc5f4aee5a64d686740f063c76e
- MD5 9ec1867bf0b580abae462efa239b214c
- SHA1 fe96359803d7a4c2de4f900f95b0fc9d76e299f2
- SHA512 cd5f90618ac15c937f567305e7fe77f1fb2dbf96bdfa11623ca54b8511f61a0a37ff5587963fe441601f4eb97741bcadf669232a69fa03214b41a28a02aab880
- SSDEEP 1572864:cX+BWMFDe45kQsab5o6hDRVOl+7IQSnNa1hItzM1gMnOC6e/RsB65IFJKsKd3Iys:cOBFle459NjhDRVMJGOtzMpnf7R956Aa
- TLSH T15218335D2FC0E846E01DE2FF7A6623A11E59B9CB6BF3F257546C806E2C58770A940363
- MD5 SHA1 SHA512 SSDEEP TLSH
ScoreN/A -
- Target LostInWinter.exe
- Size 164.5MB
- SHA256 d8a522aa66b024e5875a7f9643074eec1b4068b65cbc8125f235701cde7193b9
- MD5 473944ed281743c2d6790153c37587c7
- SHA1 44d8626b5e116e232532c014f37198ea5a594997
- SHA512 6d0b1baedbe472f25f2ec85895a7b966e70498371a597a5ce592ba88b59f5941db87aa9ad1ecf56ad142e8bd5eff851c2e5e1abbf555cf23049d1344bed53096
- SSDEEP 1572864:aS8FIVRV+pz0o4AbRqkaGadu15dyLgOR+39jK8DKOdCisaIZtaAbJsScW8fe07ra:nt1azadiF2E3ra
- TLSH T15F888C03F29650E9F05DD1B19B578236EA72B8864738A6DF175407292F77FE02B39B20
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Modifies Windows Firewall
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Creates a file in the Startup directory
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
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Executes dropped EXE
-
Loads dropped DLL
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Adds Run key to start application
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Badlisted process makes network request
Network request originating from process or tool commonly abused by malware.
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Obfuscated Files or Information: Command Obfuscation
Adversaries may obfuscate content during command execution to impede detection.
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Discovers running processes
Running process information can be used to identify security tools or plan follow-on actions.
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Executes a VBScript file via the Windows Script Host.
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
4PowerShell
1Visual Basic
1Windows Command Shell
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Hide Artifacts
1Ignore Process Interrupts
1Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Obfuscated Files or Information
1Command Obfuscation
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Discovery
Peripheral Device Discovery
2Process Discovery
1Query Registry
5System Information Discovery
6System Location Discovery
1System Language Discovery
1System Network Configuration Discovery
2Internet Connection Discovery
1Wi-Fi Discovery
1