dcrat | 80dd765c830f488c111c61f86d1f1b3822fb75b5d91c4abe23099bc7e2fa3f81

Analysis

max time kernel
100s
max time network
104s
platform
windows11-21h2_x64
resource
win11-20250619-en
resource tags

arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
submitted
09/08/2025, 03:50

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

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 6 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	3408	5408	schtasks.exe	78
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2464	5408	schtasks.exe	78
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5956	5408	schtasks.exe	78
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3412	5408	schtasks.exe	78
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5004	5408	schtasks.exe	78
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	8	5408	schtasks.exe	78

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\EnableLUA = "0"	lsass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	lsass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	lsass.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

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/1220-0-0x00000000009B0000-0x0000000000B34000-memory.dmp	dcrat
behavioral2/files/0x001900000002b0ce-24.dat	dcrat

Executes dropped EXE 1 IoCs

pid	Process
5084	lsass.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	lsass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	lsass.exe
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

SmartAssembly .NET packer 1 IoCs

Detects SmartAssembly .NET packer.

resource	yara_rule
behavioral2/memory/1220-6-0x0000000002DC0000-0x0000000002DCA000-memory.dmp	SmartAssembly

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files\Internet Explorer\SIGNUP\dwm.exe	c0b21fe122fa7d6563cce97952cf5eb3.exe
File opened for modification	C:\Program Files\Internet Explorer\SIGNUP\dwm.exe	c0b21fe122fa7d6563cce97952cf5eb3.exe
File created	C:\Program Files\Internet Explorer\SIGNUP\6cb0b6c459d5d3	c0b21fe122fa7d6563cce97952cf5eb3.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1418876453-2228697459-2788511057-1000_Classes\Local Settings	c0b21fe122fa7d6563cce97952cf5eb3.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
3408	schtasks.exe
2464	schtasks.exe
5956	schtasks.exe
3412	schtasks.exe
5004	schtasks.exe
8	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1220	c0b21fe122fa7d6563cce97952cf5eb3.exe
5084	lsass.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1220	c0b21fe122fa7d6563cce97952cf5eb3.exe
Token: SeDebugPrivilege	5084	lsass.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 2264	1220	c0b21fe122fa7d6563cce97952cf5eb3.exe	85
PID 1220 wrote to memory of 2264	1220	c0b21fe122fa7d6563cce97952cf5eb3.exe	85
PID 2264 wrote to memory of 3808	2264	cmd.exe	87
PID 2264 wrote to memory of 3808	2264	cmd.exe	87
PID 2264 wrote to memory of 5084	2264	cmd.exe	88
PID 2264 wrote to memory of 5084	2264	cmd.exe	88

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"	lsass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	lsass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	lsass.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 whether UAC is enabled
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1220
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\ZEdnyHxDOI.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2264
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:3808
- - C:\a2a3d436d564c99afcc5d7\lsass.exe
    "C:\a2a3d436d564c99afcc5d7\lsass.exe"
    3⤵
    - UAC bypass
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - System policy modification
    PID:5084

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Program Files\Internet Explorer\SIGNUP\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3408

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\SIGNUP\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2464

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Program Files\Internet Explorer\SIGNUP\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5956

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 14 /tr "'C:\a2a3d436d564c99afcc5d7\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3412

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\a2a3d436d564c99afcc5d7\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5004

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\a2a3d436d564c99afcc5d7\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:8

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

Replay Monitor

Loading Replay Monitor...

Downloads

ZEdnyHxDOI.bat

Path C:\Users\Admin\AppData\Local\Temp\ZEdnyHxDOI.bat
Size 200B
SHA256 4c41a202e17d45083d85926e996aa6030a5a637bd30ba76a15d3c2b3352af65c
MD5 e27ef8c96a77191baf88386c321cca73
SHA1 606ed0b492dcb125cb945878eebb8a3884d4afb1
SHA512 f0d6ffe08834f62f8e44716fd3650b20938d94a80014d940947961726ecffc4799f3f9640bea41b9184bbc3f27c8c36833bb462fe7d302b676f01e44d1afd548
MD5 SHA1 SHA512

Submit Download

lsass.exe

Path C:\a2a3d436d564c99afcc5d7\lsass.exe
Size 1.5MB
SHA256 80dd765c830f488c111c61f86d1f1b3822fb75b5d91c4abe23099bc7e2fa3f81
MD5 c0b21fe122fa7d6563cce97952cf5eb3
SHA1 ed5d6006accdb5013bc01a679f41b855333b87da
SHA512 6c4d2831b54f5281742aa48487f4b181fd0eb50c5c6d363f7cf26df82ba0a48981ea82e5f2267302d1652330e6d65f59be62305e0124025f2dfe9f3fcb2a9d55
SSDEEP 24576:1OOge4KVP+x7MobEMWpvgXhlE4PIiu6Ykt671HM45n2ttOG7lXmw:1OO4/E4PIrvkt6a452twAm
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1220-6-0x0000000002DC0000-0x0000000002DCA000-memory.dmp

Download

memory/1220-3-0x00000000014A0000-0x00000000014BC000-memory.dmp

Download

memory/1220-4-0x000000001BD80000-0x000000001BDD0000-memory.dmp

Download

memory/1220-5-0x000000001B6F0000-0x000000001B706000-memory.dmp

Download

memory/1220-0-0x00000000009B0000-0x0000000000B34000-memory.dmp

Download

memory/1220-7-0x000000001B710000-0x000000001B71C000-memory.dmp

Download

memory/1220-8-0x000000001BD30000-0x000000001BD38000-memory.dmp

Download

memory/1220-9-0x000000001BD40000-0x000000001BD52000-memory.dmp

Download

memory/1220-10-0x000000001C4A0000-0x000000001C9C8000-memory.dmp

Download

memory/1220-11-0x000000001BD70000-0x000000001BD7C000-memory.dmp

Download

memory/1220-12-0x000000001BDD0000-0x000000001BDDC000-memory.dmp

Download

memory/1220-2-0x0000000001480000-0x000000000148E000-memory.dmp

Download

memory/1220-1-0x000000001B720000-0x000000001B730000-memory.dmp

Download