Analysis
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max time kernel
144s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
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submitted
20/07/2023, 00:17
General
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Target
HEUR-Trojan-Spy.MSIL.Stealer.gen-bd13041dfdb4.exe
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Size
608KB
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MD5
e8934df9ec508ad4eab478d511060d90
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SHA1
31582857d61047166558c92c166a6a903a09bf83
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SHA256
bd13041dfdb44e77eb2bc5d19ef39c05a7820010d36d2fede24d1ad330ae6daa
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SHA512
aecedefc6b269bfddfd9d61d91802686cfab2bea951563d2b74fb6841670f4d9e215ccab7f8953842be5a25f39dd3a034eb5cda52d54812e40f713a3465261f8
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SSDEEP
12288:QqnOi180YXNIIGSWAXb0ztt841j3RS/8A9rcF:Q+Oi1qNJGSnXb0zDu
Malware Config
Signatures
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Process spawned unexpected child process 4 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
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DCRat payload 4 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 1 IoCs
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Adds Run key to start application 2 TTPs 4 IoCs
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Drops file in System32 directory 3 IoCs
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Drops file in Program Files directory 2 IoCs
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Drops file in Windows directory 2 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 6 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 2 IoCs
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Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan-Spy.MSIL.Stealer.gen-bd13041dfdb4.exe"C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan-Spy.MSIL.Stealer.gen-bd13041dfdb4.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Program Files\Uninstall Information\RuntimeBroker.exe"C:\Program Files\Uninstall Information\RuntimeBroker.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Windows\System32\SetNetworkLocationFlyout\SppExtComObj.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\mib\explorer.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\RuntimeBroker.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\PerfLogs\StartMenuExperienceHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
608KB
MD5e8934df9ec508ad4eab478d511060d90
SHA131582857d61047166558c92c166a6a903a09bf83
SHA256bd13041dfdb44e77eb2bc5d19ef39c05a7820010d36d2fede24d1ad330ae6daa
SHA512aecedefc6b269bfddfd9d61d91802686cfab2bea951563d2b74fb6841670f4d9e215ccab7f8953842be5a25f39dd3a034eb5cda52d54812e40f713a3465261f8
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Filesize
608KB
MD5e8934df9ec508ad4eab478d511060d90
SHA131582857d61047166558c92c166a6a903a09bf83
SHA256bd13041dfdb44e77eb2bc5d19ef39c05a7820010d36d2fede24d1ad330ae6daa
SHA512aecedefc6b269bfddfd9d61d91802686cfab2bea951563d2b74fb6841670f4d9e215ccab7f8953842be5a25f39dd3a034eb5cda52d54812e40f713a3465261f8
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Filesize
608KB
MD5e8934df9ec508ad4eab478d511060d90
SHA131582857d61047166558c92c166a6a903a09bf83
SHA256bd13041dfdb44e77eb2bc5d19ef39c05a7820010d36d2fede24d1ad330ae6daa
SHA512aecedefc6b269bfddfd9d61d91802686cfab2bea951563d2b74fb6841670f4d9e215ccab7f8953842be5a25f39dd3a034eb5cda52d54812e40f713a3465261f8
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
632KB
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Filesize
10.8MB
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Filesize
64KB
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Filesize
10.8MB