Analysis
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max time kernel
121s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
05-12-2024 02:05
Behavioral task
behavioral1
Sample
0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01.exe
Resource
win10v2004-20241007-en
General
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Target
0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01.exe
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Size
560KB
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MD5
37cb065f052d8cf6a46d41d6225b9a9f
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SHA1
ffcd01452c4b695f1371787a5c728c692283fca2
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SHA256
0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01
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SHA512
8a2850f61af22a40ebb1e11c1d294cd74c94cf3b365619a4588bfbc54362575467cff4a5d75f685354b073453ad9892125739e78468a8dc550e52ccab88df47e
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SSDEEP
6144:s/9Sb1sKhV/+NZCwUW/mulaEqLhEWRzSyAZW9z9mXbj7Gvvai33Ew8X6Asz6UrZ:sFK1DH/p8l/zWRdP5mfA33EjKf6UrZ
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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Dcrat family
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DCRat payload 3 IoCs
resource yara_rule behavioral1/memory/1940-1-0x0000000000C10000-0x0000000000CA2000-memory.dmp family_dcrat_v2 behavioral1/files/0x000e00000001537c-13.dat family_dcrat_v2 behavioral1/memory/2796-15-0x0000000000E40000-0x0000000000ED2000-memory.dmp family_dcrat_v2 -
Executes dropped EXE 1 IoCs
pid Process 2796 staticfile.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 2796 staticfile.exe 2796 staticfile.exe 2796 staticfile.exe 2796 staticfile.exe 2796 staticfile.exe 2796 staticfile.exe 2796 staticfile.exe 2796 staticfile.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1940 0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01.exe Token: SeDebugPrivilege 2796 staticfile.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1940 wrote to memory of 2944 1940 0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01.exe 31 PID 1940 wrote to memory of 2944 1940 0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01.exe 31 PID 1940 wrote to memory of 2944 1940 0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01.exe 31 PID 2944 wrote to memory of 2356 2944 cmd.exe 33 PID 2944 wrote to memory of 2356 2944 cmd.exe 33 PID 2944 wrote to memory of 2356 2944 cmd.exe 33 PID 2944 wrote to memory of 2652 2944 cmd.exe 34 PID 2944 wrote to memory of 2652 2944 cmd.exe 34 PID 2944 wrote to memory of 2652 2944 cmd.exe 34 PID 2944 wrote to memory of 2796 2944 cmd.exe 35 PID 2944 wrote to memory of 2796 2944 cmd.exe 35 PID 2944 wrote to memory of 2796 2944 cmd.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01.exe"C:\Users\Admin\AppData\Local\Temp\0b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1940 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\x4J7NyPzVK.bat"2⤵
- Suspicious use of WriteProcessMemory
PID:2944 -
C:\Windows\system32\chcp.comchcp 650013⤵PID:2356
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C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:23⤵PID:2652
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C:\Users\Admin\AppData\Local\staticfile.exe"C:\Users\Admin\AppData\Local\staticfile.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2796
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Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
219B
MD50ddd22f499f14dc8bb6be52e2c980c16
SHA1529f9e515d065a5d3f003b07ee0de709726c2377
SHA25638319bcc5998c505470378e6f6ef756fce742db306bb0ffbfd5cc95a95b9b7a4
SHA5121bd408c1be6c3b51a446f2fd91414f69dbdb3c95e0dbd7776198a13e0f0d8cd3536d20f5a373bb81d59b8fac763e7fb254e377fcb1d3cbf53a549ca04218fb75
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Filesize
560KB
MD537cb065f052d8cf6a46d41d6225b9a9f
SHA1ffcd01452c4b695f1371787a5c728c692283fca2
SHA2560b3af32b322e30f7f68017c13e59e71b6b1f26756477e122b40a20434bd01d01
SHA5128a2850f61af22a40ebb1e11c1d294cd74c94cf3b365619a4588bfbc54362575467cff4a5d75f685354b073453ad9892125739e78468a8dc550e52ccab88df47e