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Analysis
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max time kernel
118s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
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submitted
11/01/2024, 07:14
General
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Target
52e0c294963f6cd10e3104901c936a3e.exe
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Size
2.0MB
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MD5
52e0c294963f6cd10e3104901c936a3e
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SHA1
fa78c9a910b904cfc412cef1b422934243f6f0ff
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SHA256
77d8062a27308c826de456d4e430ebcfb9315f87ae792bb23d8f21365c8b4fe7
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SHA512
972bb0dbd66f984c41b64c09ff84fef138714929b13db0f03ca2e5257d92664dcf4fcf6d7e6fc99894b664bb9acbbbe5598787a2d10bf4e8d074dfd0487c5f3b
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SSDEEP
49152:n0Le0UIxHI38h4kbJA9GOErel2MaHBKljpsREsSSUOmLY5sVQQ:ChJsIJAIMnaHBKcRoOusQ
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 8 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
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DCRat payload 8 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
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Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
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Executes dropped EXE 1 IoCs
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Identifies Wine through registry keys 2 TTPs 2 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
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Loads dropped DLL 2 IoCs
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Adds Run key to start application 2 TTPs 8 IoCs
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Drops file in System32 directory 5 IoCs
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Suspicious use of NtSetInformationThreadHideFromDebugger 2 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 8 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 5 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 4 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\52e0c294963f6cd10e3104901c936a3e.exe"C:\Users\Admin\AppData\Local\Temp\52e0c294963f6cd10e3104901c936a3e.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- 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:\Recovery\9064cc02-9ba8-11ee-8a7b-e6b52eba4e86\52e0c294963f6cd10e3104901c936a3e.exe"C:\Recovery\9064cc02-9ba8-11ee-8a7b-e6b52eba4e86\52e0c294963f6cd10e3104901c936a3e.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\msvcp140_codecvt_ids\winlogon.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 "52e0c294963f6cd10e3104901c936a3e" /sc ONLOGON /tr "'C:\Windows\CSC\52e0c294963f6cd10e3104901c936a3e.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 "52e0c294963f6cd10e3104901c936a3e" /sc ONLOGON /tr "'C:\Recovery\9064cc02-9ba8-11ee-8a7b-e6b52eba4e86\52e0c294963f6cd10e3104901c936a3e.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 "lsass" /sc ONLOGON /tr "'C:\Windows\System32\winrs\lsass.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 "audiodg" /sc ONLOGON /tr "'C:\Documents and Settings\audiodg.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 "52e0c294963f6cd10e3104901c936a3e" /sc ONLOGON /tr "'C:\ProgramData\Templates\52e0c294963f6cd10e3104901c936a3e.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 "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\Resources\1033\lsass.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 "csrss" /sc ONLOGON /tr "'C:\Recovery\9064cc02-9ba8-11ee-8a7b-e6b52eba4e86\csrss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
251KB
MD5039c0b09a18b2a673474d94c33c07f8f
SHA15fce11a083396c33e4865b626bc3faf1264ce138
SHA25647b4506510d4d7537cbfce050a6e6df797cca00a01730a49d823e9337dcdf31e
SHA512ae0dcc78cc20f873a6fe0cfe02ad01b0e8fa81534fa87468473147f235630ef786cc58b37cc554ab71363d4fd2fb31d47193542289a2283a6f7f8a19ad26e88c
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Filesize
45KB
MD5b55264ced55df93a668adfd4f23ff6d1
SHA111c24874e21b7080d265e2d1571588e88f49a6c5
SHA256c3ed713d90c68fdda20a521f64e0263a74b327072d2b802c7146221d8bf98021
SHA5126933fd9e4203be71a761cb87136fca76d012f34a8bbce85e143f650ab6725a30ec05bc20f0f9e09f7d6a9f7cc1837d5ed38ad99ba40b06c34a309e856a81f067
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Filesize
1.4MB
MD58d8a4a83184fe72c917f411c43599bac
SHA157b4038efc7fea813781601e0eec23d98fdcb1b4
SHA256345af5aa8670dbe09720214694ee66bcb20c74666bc25b3133a9a5952235f8ce
SHA512ab6385d8defc3f6ec9ec6472e24b425bae8b79e417abbab73cda7becef45b491d0a7d275dc9dc9cf05bc9e7367f1c4164a2d5cc9406c18e70fd5e2cf2a2bc142
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Filesize
296KB
MD59e11470d492063a353d3d5733eee1422
SHA197490cd66ba5a46f90ffffafa469d987f707a195
SHA2560cb822f308eebc408078fde406e03886716737ba47b82317ad04d7d969cfb885
SHA512b5ad69ae3c6923089f63061e63d49b905dd00a71b796be849971ddf941db49dc79a9f03aa92486e1d514d05e639e9b6e9d9c2cccaa7bf9dc549052c5e249152e
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Filesize
314KB
MD5efa37baf697451ed3b7d949a7acd2fcb
SHA156e4b9905799a1f5dc8883691a6afcc7987fdcdf
SHA256afc4835eeb5186800e1971346e1f1087608996621ed326bc2c5bf239c3a6aa4c
SHA5122e5bbfb9575e41743cac01d60fe5573f821d8843603db90f69edccf391de936b02f70e20c2f4dc2eafc6fa307458e86e4bc3ea81b719efda853efac04d099eee
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Filesize
92KB
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Filesize
56KB
-
Filesize
512KB
-
Filesize
816KB
-
Filesize
960KB
-
Filesize
92KB
-
Filesize
256KB
-
Filesize
44KB
-
Filesize
524KB
-
Filesize
56KB
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Filesize
4.3MB
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Filesize
296KB
-
Filesize
40KB
-
Filesize
60KB
-
Filesize
92KB
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Filesize
4.3MB
-
Filesize
4.3MB
-
Filesize
6.9MB
-
Filesize
4.3MB
-
Filesize
40KB
-
Filesize
36KB
-
Filesize
296KB
-
Filesize
36KB
-
Filesize
296KB
-
Filesize
8KB
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Filesize
6.9MB
-
Filesize
816KB
-
Filesize
960KB
-
Filesize
512KB
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Filesize
6.9MB
-
Filesize
4.3MB
-
Filesize
44KB
-
Filesize
4.3MB
-
Filesize
92KB
-
Filesize
524KB
-
Filesize
60KB
-
Filesize
4.3MB
-
Filesize
4.3MB
-
Filesize
92KB
-
Filesize
816KB
-
Filesize
352KB
-
Filesize
4.3MB
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Filesize
512KB
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Filesize
6.9MB
-
Filesize
36KB
-
Filesize
4.3MB
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Filesize
296KB
-
Filesize
4.3MB
-
Filesize
56KB
-
Filesize
256KB
-
Filesize
44KB
-
Filesize
92KB
-
Filesize
156KB
-
Filesize
52KB
-
Filesize
56KB
-
Filesize
960KB
-
Filesize
816KB
-
Filesize
512KB
-
Filesize
328KB
-
Filesize
328KB
-
Filesize
44KB
-
Filesize
960KB
-
Filesize
36KB
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Filesize
296KB