Analysis
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max time kernel
36s -
max time network
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platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
30-10-2024 17:26
Behavioral task
behavioral1
Sample
F7361ED3503F11A56E8CC53AD6C277B8.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
F7361ED3503F11A56E8CC53AD6C277B8.exe
Resource
win10v2004-20241007-en
General
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Target
F7361ED3503F11A56E8CC53AD6C277B8.exe
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Size
1.2MB
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MD5
f7361ed3503f11a56e8cc53ad6c277b8
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SHA1
bfa62d30d715bf866d5a2a6198a474c316b3dc04
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SHA256
a64e0fad64514c66bc6750432d8c3ef96932f9902886f540cca217031d1cfc44
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SHA512
9828478b57e85a2341262127e3149f5a9e48523198665b99634738627f107c1f5ab0c30ad80819bd9c4920836585397f4caef83c6d955cca6f0074b212fa96a4
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SSDEEP
24576:q2G/nvxW3WXlB6Fh3rXTamAQ8uwoqTWy1Y7i887KtU:qbA3q4h3rD5DiT1T2O
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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Process spawned unexpected child process 21 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exedescription pid pid_target Process procid_target Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2756 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2812 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2940 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2192 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1156 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2744 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2452 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1700 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1472 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2352 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1392 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 784 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1656 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1956 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2872 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1148 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1352 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2336 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 696 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1016 2816 schtasks.exe 34 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 548 2816 schtasks.exe 34 -
Processes:
resource yara_rule behavioral1/files/0x0008000000018b50-9.dat dcrat behavioral1/memory/2032-13-0x0000000000E40000-0x0000000000F16000-memory.dmp dcrat behavioral1/memory/2312-35-0x00000000012A0000-0x0000000001376000-memory.dmp dcrat -
Executes dropped EXE 2 IoCs
Processes:
Agentserver.exeAgentserver.exepid Process 2032 Agentserver.exe 2312 Agentserver.exe -
Loads dropped DLL 2 IoCs
Processes:
cmd.exepid Process 2876 cmd.exe 2876 cmd.exe -
Drops file in Program Files directory 5 IoCs
Processes:
Agentserver.exedescription ioc Process File created C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\taskhost.exe Agentserver.exe File opened for modification C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\taskhost.exe Agentserver.exe File created C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\b75386f1303e64 Agentserver.exe File created C:\Program Files (x86)\Windows NT\TableTextService\audiodg.exe Agentserver.exe File created C:\Program Files (x86)\Windows NT\TableTextService\42af1c969fbb7b Agentserver.exe -
Drops file in Windows directory 2 IoCs
Processes:
Agentserver.exedescription ioc Process File created C:\Windows\ehome\de-DE\audiodg.exe Agentserver.exe File created C:\Windows\ehome\de-DE\42af1c969fbb7b Agentserver.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
F7361ED3503F11A56E8CC53AD6C277B8.exeWScript.execmd.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language F7361ED3503F11A56E8CC53AD6C277B8.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WScript.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 21 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exepid Process 2192 schtasks.exe 2744 schtasks.exe 2452 schtasks.exe 1956 schtasks.exe 2872 schtasks.exe 1016 schtasks.exe 548 schtasks.exe 1156 schtasks.exe 2352 schtasks.exe 1352 schtasks.exe 696 schtasks.exe 2756 schtasks.exe 2812 schtasks.exe 1700 schtasks.exe 1472 schtasks.exe 1392 schtasks.exe 784 schtasks.exe 1148 schtasks.exe 2940 schtasks.exe 1656 schtasks.exe 2336 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
Agentserver.exeAgentserver.exepid Process 2032 Agentserver.exe 2312 Agentserver.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Agentserver.exeAgentserver.exedescription pid Process Token: SeDebugPrivilege 2032 Agentserver.exe Token: SeDebugPrivilege 2312 Agentserver.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
F7361ED3503F11A56E8CC53AD6C277B8.exeWScript.execmd.exeAgentserver.execmd.exedescription pid Process procid_target PID 2528 wrote to memory of 2244 2528 F7361ED3503F11A56E8CC53AD6C277B8.exe 30 PID 2528 wrote to memory of 2244 2528 F7361ED3503F11A56E8CC53AD6C277B8.exe 30 PID 2528 wrote to memory of 2244 2528 F7361ED3503F11A56E8CC53AD6C277B8.exe 30 PID 2528 wrote to memory of 2244 2528 F7361ED3503F11A56E8CC53AD6C277B8.exe 30 PID 2244 wrote to memory of 2876 2244 WScript.exe 31 PID 2244 wrote to memory of 2876 2244 WScript.exe 31 PID 2244 wrote to memory of 2876 2244 WScript.exe 31 PID 2244 wrote to memory of 2876 2244 WScript.exe 31 PID 2876 wrote to memory of 2032 2876 cmd.exe 33 PID 2876 wrote to memory of 2032 2876 cmd.exe 33 PID 2876 wrote to memory of 2032 2876 cmd.exe 33 PID 2876 wrote to memory of 2032 2876 cmd.exe 33 PID 2032 wrote to memory of 2152 2032 Agentserver.exe 56 PID 2032 wrote to memory of 2152 2032 Agentserver.exe 56 PID 2032 wrote to memory of 2152 2032 Agentserver.exe 56 PID 2152 wrote to memory of 2400 2152 cmd.exe 58 PID 2152 wrote to memory of 2400 2152 cmd.exe 58 PID 2152 wrote to memory of 2400 2152 cmd.exe 58 PID 2152 wrote to memory of 2312 2152 cmd.exe 59 PID 2152 wrote to memory of 2312 2152 cmd.exe 59 PID 2152 wrote to memory of 2312 2152 cmd.exe 59 -
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\F7361ED3503F11A56E8CC53AD6C277B8.exe"C:\Users\Admin\AppData\Local\Temp\F7361ED3503F11A56E8CC53AD6C277B8.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2528 -
C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\surrogateserverreviewsession\pmMvwz3lY7qlA.vbe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2244 -
C:\Windows\SysWOW64\cmd.execmd /c ""C:\surrogateserverreviewsession\cAWYZg0ZdjD2dKs6hjKja7TASB4qz.bat" "3⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876 -
C:\surrogateserverreviewsession\Agentserver.exe"C:\surrogateserverreviewsession\Agentserver.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:2032 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\7eX8iZmwI9.bat"5⤵
- Suspicious use of WriteProcessMemory
PID:2152 -
C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:26⤵PID:2400
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C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\Agentserver.exe"C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\Agentserver.exe"6⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2312
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\taskhost.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2756
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\taskhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2812
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\taskhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2940
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "AgentserverA" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\Agentserver.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2192
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "Agentserver" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\Agentserver.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1156
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "AgentserverA" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\Agentserver.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2744
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2452
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1700
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1472
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "audiodga" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\audiodg.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2352
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\TableTextService\audiodg.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1392
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "audiodga" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\audiodg.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:784
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "audiodga" /sc MINUTE /mo 10 /tr "'C:\Windows\ehome\de-DE\audiodg.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1656
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Windows\ehome\de-DE\audiodg.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1956
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "audiodga" /sc MINUTE /mo 13 /tr "'C:\Windows\ehome\de-DE\audiodg.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2872
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\surrogateserverreviewsession\csrss.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1148
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\surrogateserverreviewsession\csrss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1352
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\surrogateserverreviewsession\csrss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2336
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsml" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\lsm.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:696
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\lsm.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1016
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsml" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\1033\lsm.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:548
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
243B
MD5a780006335aae031ca72c51a4e5832a7
SHA12296aff2ef4b9ac2f3cf1addf6987e7d2752c74f
SHA256779ee3c56205704471a059a9d1a63751dc94fd60a67fa9e756581f52e6ff27e8
SHA512d361e1bcc26a783e31e60aae33d68d4a3ebfafcd2931daee879fe8579b36688d1ee27446110e0e804e7f7fe241937c0937dde5eafc54532eabe02df6ffe54203
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
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Filesize
181KB
MD54ea6026cf93ec6338144661bf1202cd1
SHA1a1dec9044f750ad887935a01430bf49322fbdcb7
SHA2568efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA5126c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b
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Filesize
49B
MD592e94bdecb9521be3a47f97d2e66384e
SHA1eee4fd6f12d9d0194d0bcc5703e11dfc23a3ad5b
SHA256e248596953f8a96baf8a2d3f4eb134b005aeddeb7f2a7d5943c2788face1ca15
SHA512b5a418ab94b9a8be9d667411e838ee7b16be373aa68d73f5c8bed8f47dc9bc4c38abc8dec7f06f4f778c9aa72abdd0060293c573ad94832e24605ebf60991224
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Filesize
234B
MD594c156c40c9fa1a17ea1d1be3e874aa1
SHA195b81d6f87a35f34f81d01c31465c2fe0f743a7b
SHA25633abe968c7250e8fe61d27e7507f8271a989c0bf4ff42133159503f2a4719b5a
SHA512a52e0fcbefed81b7590ceed9b44762520580d946d72a5c3ac36fc6d07a964253a812e75d3ceba42f83dddd15fbe2114f65f7148975fcdd20c78547a59de132ab
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Filesize
829KB
MD5f1aaac4c20df683e3596c8a7cd3da07e
SHA1928e098dea596d12e22ed56f85cf028bcf27b31f
SHA256f3dd651e1ee7ab505f52e2c269a70e661d06e0eb51285ab41f89b3736352fa89
SHA512613387cc5d808dd7a9199212476a2ff34a92f5919d1ea353b204aa931248b2fbf0efe9261bfca6ddb804621a8d6234df4558cffc326050a9424957de3b05c6e2