dcrat | 80dd765c830f488c111c61f86d1f1b3822fb75b5d91c4abe23099bc7e2fa3f81

Analysis

max time kernel
104s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20250610-en
resource tags

arch:x64arch:x86image:win10v2004-20250610-enlocale:en-usos:windows10-2004-x64system
submitted
09/08/2025, 03:50

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General

Target
c0b21fe122fa7d6563cce97952cf5eb3.exe
Size 1.5MB
Sample250809-eeeg1swpy5
SHA256 80dd765c830f488c111c61f86d1f1b3822fb75b5d91c4abe23099bc7e2fa3f81
MD5 c0b21fe122fa7d6563cce97952cf5eb3
SHA1 ed5d6006accdb5013bc01a679f41b855333b87da
SHA512 6c4d2831b54f5281742aa48487f4b181fd0eb50c5c6d363f7cf26df82ba0a48981ea82e5f2267302d1652330e6d65f59be62305e0124025f2dfe9f3fcb2a9d55
SSDEEP 24576:1OOge4KVP+x7MobEMWpvgXhlE4PIiu6Ykt671HM45n2ttOG7lXmw:1OO4/E4PIrvkt6a452twAm
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

dcrat defense_evasion execution infostealer persistence rat trojan

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

Process spawned unexpected child process 15 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	3124	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5628	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5180	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5160	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2136	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3184	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3604	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3716	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5608	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2980	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3520	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2632	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2624	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1708	3540	schtasks.exe	84
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4676	3540	schtasks.exe	84

UAC bypass 3 TTPs 6 IoCs

defense_evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	unsecapp.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	c0b21fe122fa7d6563cce97952cf5eb3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	c0b21fe122fa7d6563cce97952cf5eb3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	c0b21fe122fa7d6563cce97952cf5eb3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	unsecapp.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	unsecapp.exe

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2496-0-0x0000000000CF0000-0x0000000000E74000-memory.dmp	dcrat
behavioral1/files/0x00070000000242ea-21.dat	dcrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3001560346-2020497773-4190896137-1000\Control Panel\International\Geo\Nation	c0b21fe122fa7d6563cce97952cf5eb3.exe

Executes dropped EXE 1 IoCs

pid	Process
3456	unsecapp.exe

Checks whether UAC is enabled 1 TTPs 4 IoCs

defense_evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	c0b21fe122fa7d6563cce97952cf5eb3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	c0b21fe122fa7d6563cce97952cf5eb3.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	unsecapp.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	unsecapp.exe

SmartAssembly .NET packer 1 IoCs

Detects SmartAssembly .NET packer.

resource	yara_rule
behavioral1/memory/2496-6-0x0000000002FA0000-0x0000000002FAA000-memory.dmp	SmartAssembly

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 15 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2136	schtasks.exe
3716	schtasks.exe
2632	schtasks.exe
3604	schtasks.exe
1708	schtasks.exe
5628	schtasks.exe
5180	schtasks.exe
5160	schtasks.exe
3184	schtasks.exe
2980	schtasks.exe
2624	schtasks.exe
3124	schtasks.exe
5608	schtasks.exe
3520	schtasks.exe
4676	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2496	c0b21fe122fa7d6563cce97952cf5eb3.exe
3456	unsecapp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2496	c0b21fe122fa7d6563cce97952cf5eb3.exe
Token: SeDebugPrivilege	3456	unsecapp.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 3456	2496	c0b21fe122fa7d6563cce97952cf5eb3.exe	100
PID 2496 wrote to memory of 3456	2496	c0b21fe122fa7d6563cce97952cf5eb3.exe	100

System policy modification 1 TTPs 6 IoCs

defense_evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	c0b21fe122fa7d6563cce97952cf5eb3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	c0b21fe122fa7d6563cce97952cf5eb3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	c0b21fe122fa7d6563cce97952cf5eb3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	unsecapp.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	unsecapp.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	unsecapp.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.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\c0b21fe122fa7d6563cce97952cf5eb3.exe
"C:\Users\Admin\AppData\Local\Temp\c0b21fe122fa7d6563cce97952cf5eb3.exe"
1⤵
- UAC bypass
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2496
- C:\e17c3a4b92f97a6f793d\unsecapp.exe
  "C:\e17c3a4b92f97a6f793d\unsecapp.exe"
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - System policy modification
  PID:3456

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 11 /tr "'C:\e17c3a4b92f97a6f793d\upfc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3124

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\e17c3a4b92f97a6f793d\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5628

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 6 /tr "'C:\e17c3a4b92f97a6f793d\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5180

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 8 /tr "'C:\b77eca8a96ea76dc187791135e6117a4\SearchApp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5160

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\b77eca8a96ea76dc187791135e6117a4\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2136

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 5 /tr "'C:\b77eca8a96ea76dc187791135e6117a4\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3184

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 7 /tr "'C:\b77eca8a96ea76dc187791135e6117a4\upfc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3604

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\b77eca8a96ea76dc187791135e6117a4\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3716

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 8 /tr "'C:\b77eca8a96ea76dc187791135e6117a4\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5608

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 6 /tr "'C:\e17c3a4b92f97a6f793d\SearchApp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2980

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\e17c3a4b92f97a6f793d\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3520

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 9 /tr "'C:\e17c3a4b92f97a6f793d\SearchApp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2632

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 8 /tr "'C:\e17c3a4b92f97a6f793d\unsecapp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2624

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\e17c3a4b92f97a6f793d\unsecapp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1708

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 10 /tr "'C:\e17c3a4b92f97a6f793d\unsecapp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4676

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

unsecapp.exe

Path C:\e17c3a4b92f97a6f793d\unsecapp.exe
Size 1.5MB
SHA256 80dd765c830f488c111c61f86d1f1b3822fb75b5d91c4abe23099bc7e2fa3f81
MD5 c0b21fe122fa7d6563cce97952cf5eb3
SHA1 ed5d6006accdb5013bc01a679f41b855333b87da
SHA512 6c4d2831b54f5281742aa48487f4b181fd0eb50c5c6d363f7cf26df82ba0a48981ea82e5f2267302d1652330e6d65f59be62305e0124025f2dfe9f3fcb2a9d55
SSDEEP 24576:1OOge4KVP+x7MobEMWpvgXhlE4PIiu6Ykt671HM45n2ttOG7lXmw:1OO4/E4PIrvkt6a452twAm
MD5 SHA1 SHA512 SSDEEP

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memory/2496-6-0x0000000002FA0000-0x0000000002FAA000-memory.dmp

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memory/2496-8-0x0000000003100000-0x0000000003108000-memory.dmp

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memory/2496-3-0x0000000002F80000-0x0000000002F9C000-memory.dmp

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memory/2496-4-0x000000001C060000-0x000000001C0B0000-memory.dmp

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memory/2496-5-0x00000000030D0000-0x00000000030E6000-memory.dmp

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memory/2496-0-0x0000000000CF0000-0x0000000000E74000-memory.dmp

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memory/2496-7-0x00000000030F0000-0x00000000030FC000-memory.dmp

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memory/2496-2-0x0000000002F70000-0x0000000002F7E000-memory.dmp

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memory/2496-9-0x000000001BAF0000-0x000000001BB02000-memory.dmp

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memory/2496-10-0x000000001C780000-0x000000001CCA8000-memory.dmp

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memory/2496-11-0x000000001C030000-0x000000001C03C000-memory.dmp

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memory/2496-12-0x000000001C040000-0x000000001C04C000-memory.dmp

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memory/2496-1-0x0000000002FB0000-0x0000000002FC0000-memory.dmp

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memory/3456-34-0x000000001B500000-0x000000001B512000-memory.dmp

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