Analysis
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max time kernel
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max time network
151s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
16-11-2024 13:56
Behavioral task
behavioral1
Sample
1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe
Resource
win10v2004-20241007-en
General
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Target
1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe
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Size
631KB
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MD5
4d95ea8721d0a84b69c2d60951a8a65e
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SHA1
b3b9230b284c32e8d35c65b6b31d0a1b729c6d7c
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SHA256
1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d
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SHA512
7500b73aa452a6452fd6fe41df0fbffa96821918df34fcff2a29bf2072f5fdb02886fa0945f5d567fefcf30de6d042b4e17e6760bb5e5a3ceba11767316c3fee
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SSDEEP
12288:Cr2N7ewZcHjHkoP19jpVgUbdxGU2NjCa8UQGqIJ7uHXNI8W2Zx:Cr2EEypVg4x8NmtjS+
Malware Config
Signatures
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DcRat 12 IoCs
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
pid Process 2364 schtasks.exe 3048 schtasks.exe 2636 schtasks.exe 2884 schtasks.exe 2568 schtasks.exe 2668 schtasks.exe 2572 schtasks.exe 1796 schtasks.exe 744 schtasks.exe 1672 schtasks.exe 2796 schtasks.exe 2068 schtasks.exe -
Dcrat family
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Modifies WinLogon for persistence 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:/Users/Admin/AppData/Local/\\dwm.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:/Users/Admin/AppData/Local/\\dwm.exe\", \"C:/Users/Admin/AppData/Local/\\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:/Users/Admin/AppData/Local/\\dwm.exe\", \"C:/Users/Admin/AppData/Local/\\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe\", \"C:/Users/Admin/AppData/Local/\\csrss.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:/Users/Admin/AppData/Local/\\dwm.exe\", \"C:/Users/Admin/AppData/Local/\\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe\", \"C:/Users/Admin/AppData/Local/\\csrss.exe\", \"C:/Users/Admin/AppData/Local/\\WmiPrvSE.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe -
Process spawned unexpected child process 12 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2636 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2364 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2796 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2884 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2568 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2668 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3048 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2572 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1796 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 744 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1672 2908 schtasks.exe 31 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2068 2908 schtasks.exe 31 -
resource yara_rule behavioral1/memory/3040-1-0x00000000012C0000-0x0000000001364000-memory.dmp dcrat behavioral1/files/0x00060000000190e1-20.dat dcrat behavioral1/memory/1788-21-0x0000000000200000-0x00000000002A4000-memory.dmp dcrat -
Executes dropped EXE 1 IoCs
pid Process 1788 WmiPrvSE.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 8 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d = "\"C:/Users/Admin/AppData/Local/\\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d = "\"C:/Users/Admin/AppData/Local/\\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Set value (str) \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:/Users/Admin/AppData/Local/\\csrss.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:/Users/Admin/AppData/Local/\\csrss.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Set value (str) \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:/Users/Admin/AppData/Local/\\WmiPrvSE.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "\"C:/Users/Admin/AppData/Local/\\WmiPrvSE.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Set value (str) \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:/Users/Admin/AppData/Local/\\dwm.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dwm = "\"C:/Users/Admin/AppData/Local/\\dwm.exe\"" 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 12 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2364 schtasks.exe 2796 schtasks.exe 2884 schtasks.exe 2572 schtasks.exe 1796 schtasks.exe 2636 schtasks.exe 2568 schtasks.exe 2668 schtasks.exe 3048 schtasks.exe 744 schtasks.exe 1672 schtasks.exe 2068 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 17 IoCs
pid Process 3040 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 2792 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 2820 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 1924 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe 1788 WmiPrvSE.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1788 WmiPrvSE.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 3040 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Token: SeDebugPrivilege 2792 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Token: SeDebugPrivilege 2820 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Token: SeDebugPrivilege 1924 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe Token: SeDebugPrivilege 1788 WmiPrvSE.exe -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 3040 wrote to memory of 2792 3040 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 35 PID 3040 wrote to memory of 2792 3040 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 35 PID 3040 wrote to memory of 2792 3040 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 35 PID 2792 wrote to memory of 2820 2792 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 39 PID 2792 wrote to memory of 2820 2792 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 39 PID 2792 wrote to memory of 2820 2792 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 39 PID 2820 wrote to memory of 1924 2820 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 43 PID 2820 wrote to memory of 1924 2820 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 43 PID 2820 wrote to memory of 1924 2820 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 43 PID 1924 wrote to memory of 1236 1924 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 47 PID 1924 wrote to memory of 1236 1924 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 47 PID 1924 wrote to memory of 1236 1924 1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe 47 PID 1236 wrote to memory of 2620 1236 cmd.exe 49 PID 1236 wrote to memory of 2620 1236 cmd.exe 49 PID 1236 wrote to memory of 2620 1236 cmd.exe 49 PID 1236 wrote to memory of 1788 1236 cmd.exe 50 PID 1236 wrote to memory of 1788 1236 cmd.exe 50 PID 1236 wrote to memory of 1788 1236 cmd.exe 50 -
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\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe"C:\Users\Admin\AppData\Local\Temp\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe"1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040 -
C:\Users\Admin\AppData\Local\Temp\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe"C:\Users\Admin\AppData\Local\Temp\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe"2⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2792 -
C:\Users\Admin\AppData\Local\Temp\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe"C:\Users\Admin\AppData\Local\Temp\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe"3⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2820 -
C:\Users\Admin\AppData\Local\Temp\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe"C:\Users\Admin\AppData\Local\Temp\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe"4⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1924 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\pXeFVDwFpN.bat"5⤵
- Suspicious use of WriteProcessMemory
PID:1236 -
C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:26⤵PID:2620
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C:\Users\Admin\AppData\Local\WmiPrvSE.exe"C:/Users/Admin/AppData/Local/\WmiPrvSE.exe"6⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1788
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'C:/Users/Admin/AppData/Local/\dwm.exe'" /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2636
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:/Users/Admin/AppData/Local/\dwm.exe'" /rl HIGHEST /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2364
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:/Users/Admin/AppData/Local/\dwm.exe'" /rl HIGHEST /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2796
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d1" /sc MINUTE /mo 12 /tr "'C:/Users/Admin/AppData/Local/\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe'" /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2884
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d" /sc ONLOGON /tr "'C:/Users/Admin/AppData/Local/\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe'" /rl HIGHEST /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2568
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d1" /sc MINUTE /mo 9 /tr "'C:/Users/Admin/AppData/Local/\1aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d.exe'" /rl HIGHEST /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2668
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:/Users/Admin/AppData/Local/\csrss.exe'" /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3048
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:/Users/Admin/AppData/Local/\csrss.exe'" /rl HIGHEST /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2572
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:/Users/Admin/AppData/Local/\csrss.exe'" /rl HIGHEST /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1796
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 10 /tr "'C:/Users/Admin/AppData/Local/\WmiPrvSE.exe'" /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:744
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:/Users/Admin/AppData/Local/\WmiPrvSE.exe'" /rl HIGHEST /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1672
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 6 /tr "'C:/Users/Admin/AppData/Local/\WmiPrvSE.exe'" /rl HIGHEST /f1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2068
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
207B
MD5404cad333778e42b5f12282142204913
SHA126c1fb8d34d05af1f8d317839f36a199b557d8f0
SHA2561a42016938e829884e56d53499d771efd55e2ef5f0b799892972a69e105a6497
SHA51208c31134b9fbeed4ff8b621ba412a73e95669a115d5ea1915a7cfbd5829244d735223c5f6c8bf8734208433d063477cb4f6d972ef4b9697c1b67164d61e64d07
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Filesize
631KB
MD54d95ea8721d0a84b69c2d60951a8a65e
SHA1b3b9230b284c32e8d35c65b6b31d0a1b729c6d7c
SHA2561aeaabc57a89dd8508a5e997236b91b3cd7e584dad94700fcad9d8637d2b926d
SHA5127500b73aa452a6452fd6fe41df0fbffa96821918df34fcff2a29bf2072f5fdb02886fa0945f5d567fefcf30de6d042b4e17e6760bb5e5a3ceba11767316c3fee