dcrat | ce63ae9069832ff3b0f2eb76b384c40cd8b70987280d4cc07559493a2b5c04ff

Analysis

max time kernel
101s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:10

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General

Target

4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
Size

984KB
MD5

bf8b1d73a37f97278df6d25ee245e3a9
SHA1

7ad5a5b889a0cbbcf81e69185764596578d0e0b4
SHA256

4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8
SHA512

5d351633f0575ab64b4e47073a0e689780c88d4ce9469f67c539b7946684ef6d54b859a31a7ae486f0ed11fb1939045988bfcd53a089ef4757b78f83148474a5
SSDEEP

12288:zzZvuvewk/0pPPXA5q/TQ9+n95vV25gnwHexSDwbwvDxlpaS98IUNldnd65EgF1s:zzZvuGD2PvA5YxwmbZB6Uv

Score

10^/10

dcrat infostealer persistence rat

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 8 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	4524	5576	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4728	5576	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4480	5576	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4496	5576	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4468	5576	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4540	5576	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4452	5576	schtasks.exe	87
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4448	5576	schtasks.exe	87

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-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe

Executes dropped EXE 1 IoCs

pid	Process
2084	fontdrvhost.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Windows\\System32\\SndVol\\fontdrvhost.exe\""	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\backgroundTaskHost = "\"C:\\Windows\\System32\\KBDCZ1\\backgroundTaskHost.exe\""	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\JavaDeployReg\\4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe\""	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sysmon = "\"C:\\Windows\\Professional\\sysmon.exe\""	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Windows\\System32\\KBDMAORI\\dllhost.exe\""	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\wct59\\4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe\""	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\taskhostw = "\"C:\\Program Files (x86)\\Windows Sidebar\\Gadgets\\taskhostw.exe\""	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fontdrvhost = "\"C:\\Windows\\System32\\KBDCR\\fontdrvhost.exe\""	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe

Drops file in System32 directory 16 IoCs

description	ioc	Process
File created	C:\Windows\System32\KBDCR\fontdrvhost.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File created	C:\Windows\System32\KBDCZ1\backgroundTaskHost.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Windows\System32\SndVol\RCX7295.tmp	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Windows\System32\KBDCZ1\backgroundTaskHost.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Windows\System32\KBDMAORI\dllhost.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Windows\System32\SndVol\fontdrvhost.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Windows\System32\KBDCZ1\RCX749A.tmp	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File created	C:\Windows\System32\KBDMAORI\dllhost.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File created	C:\Windows\System32\SndVol\fontdrvhost.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File created	C:\Windows\System32\KBDCZ1\eddb19405b7ce1	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Windows\System32\KBDCR\RCX7090.tmp	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Windows\System32\KBDCR\fontdrvhost.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File created	C:\Windows\System32\KBDMAORI\5940a34987c991	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File created	C:\Windows\System32\KBDCR\5b884080fd4f94	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File created	C:\Windows\System32\SndVol\5b884080fd4f94	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Windows\System32\KBDMAORI\RCX6A05.tmp	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows Sidebar\Gadgets\ea9f0e6c9e2dcd	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\RCX6E0F.tmp	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\Gadgets\taskhostw.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File created	C:\Program Files (x86)\Windows Sidebar\Gadgets\taskhostw.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\Professional\sysmon.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File created	C:\Windows\Professional\121e5b5079f7c0	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Windows\Professional\RCX7A0A.tmp	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
File opened for modification	C:\Windows\Professional\sysmon.exe	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.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-1-5-21-1062200478-553497403-3857448183-1000_Classes\Local Settings	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 8 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4496	schtasks.exe
4468	schtasks.exe
4540	schtasks.exe
4452	schtasks.exe
4448	schtasks.exe
4524	schtasks.exe
4728	schtasks.exe
4480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2036	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
2036	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
2036	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
2036	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
2036	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
2036	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
2036	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2036	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
Token: SeDebugPrivilege	2084	fontdrvhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 4976	2036	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe	99
PID 2036 wrote to memory of 4976	2036	4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe	99
PID 4976 wrote to memory of 6004	4976	cmd.exe	101
PID 4976 wrote to memory of 6004	4976	cmd.exe	101
PID 4976 wrote to memory of 2084	4976	cmd.exe	104
PID 4976 wrote to memory of 2084	4976	cmd.exe	104

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\4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe
"C:\Users\Admin\AppData\Local\Temp\4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\YzQhokCqnm.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4976
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:6004
- - C:\Windows\System32\KBDCR\fontdrvhost.exe
    "C:\Windows\System32\KBDCR\fontdrvhost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2084

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\System32\KBDMAORI\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4448

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\wct59\4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4452

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Sidebar\Gadgets\taskhostw.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4524

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\System32\KBDCR\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4540

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\System32\SndVol\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4468

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Windows\System32\KBDCZ1\backgroundTaskHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4728

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\JavaDeployReg\4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4496

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Windows\Professional\sysmon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\YzQhokCqnm.bat

Filesize
205B

MD5
76a688ad268175211cd388a8a28c1455

SHA1
24c24e1e58eb759da2cfe1902a404f28d5d657ee

SHA256
c4684e94aaf841f6cf2c58757af3bcc86dc1e31844bfcf4b170e692ccdaa82b7

SHA512
0761865555564eb4d3a4f3835b1f789e3eefff1703554982f2eed7dbf858b07507e5838a9893fca4dc85cebfc73a823337dead91ffb59bdf6418e24257f2d85f

Download Submit
C:\Windows\System32\SndVol\fontdrvhost.exe

Filesize
984KB

MD5
bf8b1d73a37f97278df6d25ee245e3a9

SHA1
7ad5a5b889a0cbbcf81e69185764596578d0e0b4

SHA256
4be84836f68985fd15cbf992a7b0e782d1bab4439960e27c6e252e76a89ce2c8

SHA512
5d351633f0575ab64b4e47073a0e689780c88d4ce9469f67c539b7946684ef6d54b859a31a7ae486f0ed11fb1939045988bfcd53a089ef4757b78f83148474a5

Download Submit
memory/2036-11-0x000000001BA90000-0x000000001BFB8000-memory.dmp

Filesize
5.2MB

Download
memory/2036-2-0x00007FFB06950000-0x00007FFB07411000-memory.dmp

Filesize
10.8MB

Download
memory/2036-8-0x000000001B2A0000-0x000000001B2B0000-memory.dmp

Filesize
64KB

Download
memory/2036-10-0x000000001B290000-0x000000001B2A2000-memory.dmp

Filesize
72KB

Download
memory/2036-9-0x000000001B280000-0x000000001B28C000-memory.dmp

Filesize
48KB

Download
memory/2036-12-0x000000001B320000-0x000000001B32C000-memory.dmp

Filesize
48KB

Download
memory/2036-1-0x0000000000030000-0x000000000012C000-memory.dmp

Filesize
1008KB

Download
memory/2036-5-0x000000001ADE0000-0x000000001ADF0000-memory.dmp

Filesize
64KB

Download
memory/2036-7-0x000000001B270000-0x000000001B278000-memory.dmp

Filesize
32KB

Download
memory/2036-6-0x000000001B260000-0x000000001B270000-memory.dmp

Filesize
64KB

Download
memory/2036-4-0x000000001B2B0000-0x000000001B300000-memory.dmp

Filesize
320KB

Download
memory/2036-3-0x000000001B240000-0x000000001B25C000-memory.dmp

Filesize
112KB

Download
memory/2036-93-0x00007FFB06950000-0x00007FFB07411000-memory.dmp

Filesize
10.8MB

Download
memory/2036-0-0x00007FFB06953000-0x00007FFB06955000-memory.dmp

Filesize
8KB

Download