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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
28/10/2024, 02:48
Behavioral task
behavioral1
Sample
7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
Resource
win10v2004-20241007-en
General
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Target
7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
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Size
827KB
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MD5
759b333fd8d1eedb5666fdea1da25b25
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SHA1
b66fc861196561f793062622b88cdb1065e35459
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SHA256
7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e
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SHA512
831006157773f5a30dbf07dcbfd484f49a978c077f8e132d33c8e044f8141462bb890c344724b23c3144488c1c406d576b7009c1205772a503ce6cc92692aec3
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SSDEEP
12288:M+B2ad7F/Jf2xm1/nNfkOV+0Z3+5DlpAXdet4y5+q:gad7PuxmRn60Zu7xtZp
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 9 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 4160 32 schtasks.exe 83 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 516 32 schtasks.exe 83 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 452 32 schtasks.exe 83 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1260 32 schtasks.exe 83 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3328 32 schtasks.exe 83 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2436 32 schtasks.exe 83 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3256 32 schtasks.exe 83 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4180 32 schtasks.exe 83 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3356 32 schtasks.exe 83 -
resource yara_rule behavioral2/memory/4424-1-0x00000000000B0000-0x0000000000186000-memory.dmp dcrat behavioral2/files/0x0007000000023c78-11.dat dcrat -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe -
Executes dropped EXE 1 IoCs
pid Process 2468 Idle.exe -
Drops file in Program Files directory 5 IoCs
description ioc Process File created C:\Program Files\ModifiableWindowsApps\services.exe 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe File created C:\Program Files\Windows Defender\MusNotification.exe 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe File created C:\Program Files\Windows Defender\aa97147c4c782d 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\6ccacd8608530f 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.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 9 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4160 schtasks.exe 516 schtasks.exe 1260 schtasks.exe 4180 schtasks.exe 452 schtasks.exe 3328 schtasks.exe 2436 schtasks.exe 3256 schtasks.exe 3356 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 2468 Idle.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe Token: SeDebugPrivilege 2468 Idle.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4424 wrote to memory of 2468 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 93 PID 4424 wrote to memory of 2468 4424 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe 93 -
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\7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe"C:\Users\Admin\AppData\Local\Temp\7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4424 -
C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2468
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 14 /tr "'C:\Users\Default\TextInputHost.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4160
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Users\Default\TextInputHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:516
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 6 /tr "'C:\Users\Default\TextInputHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:452
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Defender\MusNotification.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1260
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "MusNotification" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\MusNotification.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3328
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Defender\MusNotification.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2436
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "IdleI" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3256
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4180
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "IdleI" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3356
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
827KB
MD5759b333fd8d1eedb5666fdea1da25b25
SHA1b66fc861196561f793062622b88cdb1065e35459
SHA2567a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e
SHA512831006157773f5a30dbf07dcbfd484f49a978c077f8e132d33c8e044f8141462bb890c344724b23c3144488c1c406d576b7009c1205772a503ce6cc92692aec3