Analysis
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max time kernel
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max time network
151s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
14-05-2024 01:58
Behavioral task
behavioral1
Sample
ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe
Resource
win10v2004-20240426-en
General
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Target
ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe
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Size
1.1MB
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MD5
2768c63cfbffae59b6c2c5483e804d14
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SHA1
a577f6aa123f1b641a780ef4cf205b73c2b2bfc3
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SHA256
ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4
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SHA512
7ae59899ac9d77e98f5f52e2eeee350bade1aab284fc65bb64ba1ff605a8c7148ae535b8b69bb0fedfde6449becd87b5a0678ce241414d54b7b759c36dd0da04
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SSDEEP
24576:U2G/nvxW3Ww0tkAyVPwER/v6Yq9/zI2SV6/6ODpvdcKRWksjQ:UbA30kAyRwE332SV6XDzRLs0
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 6 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exedescription pid pid_target process target process Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2440 2540 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2672 2540 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2660 2540 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2436 2540 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2872 2540 schtasks.exe Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2492 2540 schtasks.exe -
Processes:
resource yara_rule C:\portMonitor\MsRuntimeperf.exe dcrat behavioral1/memory/2568-13-0x0000000000B20000-0x0000000000BF6000-memory.dmp dcrat behavioral1/memory/2888-24-0x0000000001040000-0x0000000001116000-memory.dmp dcrat -
Executes dropped EXE 2 IoCs
Processes:
MsRuntimeperf.exeMsRuntimeperf.exepid process 2568 MsRuntimeperf.exe 2888 MsRuntimeperf.exe -
Loads dropped DLL 2 IoCs
Processes:
cmd.exepid process 3020 cmd.exe 3020 cmd.exe -
Drops file in Program Files directory 3 IoCs
Processes:
MsRuntimeperf.exedescription ioc process File opened for modification C:\Program Files (x86)\MSBuild\System.exe MsRuntimeperf.exe File created C:\Program Files (x86)\MSBuild\27d1bcfc3c54e0 MsRuntimeperf.exe File created C:\Program Files (x86)\MSBuild\System.exe MsRuntimeperf.exe -
Drops file in Windows directory 2 IoCs
Processes:
MsRuntimeperf.exedescription ioc process File created C:\Windows\system\MsRuntimeperf.exe MsRuntimeperf.exe File created C:\Windows\system\20f8ab3cca85d5 MsRuntimeperf.exe -
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 6 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exepid process 2672 schtasks.exe 2660 schtasks.exe 2436 schtasks.exe 2872 schtasks.exe 2492 schtasks.exe 2440 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
MsRuntimeperf.exeMsRuntimeperf.exepid process 2568 MsRuntimeperf.exe 2888 MsRuntimeperf.exe 2888 MsRuntimeperf.exe 2888 MsRuntimeperf.exe 2888 MsRuntimeperf.exe 2888 MsRuntimeperf.exe 2888 MsRuntimeperf.exe 2888 MsRuntimeperf.exe 2888 MsRuntimeperf.exe 2888 MsRuntimeperf.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
MsRuntimeperf.exepid process 2888 MsRuntimeperf.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
MsRuntimeperf.exeMsRuntimeperf.exedescription pid process Token: SeDebugPrivilege 2568 MsRuntimeperf.exe Token: SeDebugPrivilege 2888 MsRuntimeperf.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exeWScript.execmd.exeMsRuntimeperf.exedescription pid process target process PID 2080 wrote to memory of 868 2080 ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe WScript.exe PID 2080 wrote to memory of 868 2080 ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe WScript.exe PID 2080 wrote to memory of 868 2080 ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe WScript.exe PID 2080 wrote to memory of 868 2080 ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe WScript.exe PID 868 wrote to memory of 3020 868 WScript.exe cmd.exe PID 868 wrote to memory of 3020 868 WScript.exe cmd.exe PID 868 wrote to memory of 3020 868 WScript.exe cmd.exe PID 868 wrote to memory of 3020 868 WScript.exe cmd.exe PID 3020 wrote to memory of 2568 3020 cmd.exe MsRuntimeperf.exe PID 3020 wrote to memory of 2568 3020 cmd.exe MsRuntimeperf.exe PID 3020 wrote to memory of 2568 3020 cmd.exe MsRuntimeperf.exe PID 3020 wrote to memory of 2568 3020 cmd.exe MsRuntimeperf.exe PID 2568 wrote to memory of 2888 2568 MsRuntimeperf.exe MsRuntimeperf.exe PID 2568 wrote to memory of 2888 2568 MsRuntimeperf.exe MsRuntimeperf.exe PID 2568 wrote to memory of 2888 2568 MsRuntimeperf.exe MsRuntimeperf.exe -
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\ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe"C:\Users\Admin\AppData\Local\Temp\ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2080 -
C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\portMonitor\7qmHZrFz6PlKEeySf7g6q7bPLdDi.vbe"2⤵
- Suspicious use of WriteProcessMemory
PID:868 -
C:\Windows\SysWOW64\cmd.execmd /c ""C:\portMonitor\1iRUSp.bat" "3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3020 -
C:\portMonitor\MsRuntimeperf.exe"C:\portMonitor\MsRuntimeperf.exe"4⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2568 -
C:\Windows\system\MsRuntimeperf.exe"C:\Windows\system\MsRuntimeperf.exe"5⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2888
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\MSBuild\System.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2440
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\System.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2672
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\MSBuild\System.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2660
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "MsRuntimeperfM" /sc MINUTE /mo 11 /tr "'C:\Windows\system\MsRuntimeperf.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2436
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "MsRuntimeperf" /sc ONLOGON /tr "'C:\Windows\system\MsRuntimeperf.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2492
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "MsRuntimeperfM" /sc MINUTE /mo 11 /tr "'C:\Windows\system\MsRuntimeperf.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2872
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
34B
MD5e7d861bf32c0cfdce43a988f7624094b
SHA1ce94364c1662056c36487d1ad2a3910d60295567
SHA256bf1a6596c9cb4f855e364b1b2f4e065d3c3db14814e4cb933a45dc1929604bab
SHA512f4e9116284beb83c4b459f386fb1cb2573769c937082a3dd1efb5ebf73693e9ad03be4cb691476720d8a7841b29aea1bd8f57e7070e15baf293c0683dc553f04
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Filesize
194B
MD5549bfbdf4b94348d8d90e99da8c2251e
SHA15a137b4eca702e1154f27729b4bd4de2e66e7562
SHA2563d992a2df8f78acb01aacd43662b8ef67810149dd6c40b96f5d88ce9ba8e215e
SHA512c3a5f93b0dde2d1a00133e22014d7b3b8d59c2780b426429d9fa98d3e32e66d6697de50af714b3375d82034f77feba7b90336b8d44767a2eaacd77129dc13793
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Filesize
828KB
MD54168f956abf60ffe49acc17b2544866f
SHA192c00da15b67c3fbc23a74198b1220c55dc56fec
SHA25619ad2d50f71214129742f9e3901ee595f760b36d5cac676911c3ee0ec7c6546d
SHA512938a4e85094d517e0ca9ef96edd2dfef75accd5d7546da44a921be023dcd066fcab51688b1f7036f67f7dcd3d0e7aedafccc58abee2b22c15da1bb05ec002a0e