dcrat | e3b4620b85709a793de2b777da764d094f9a6dc19ead0a7fcad953c1fb3e8550

General

Target

XBinderOutput(1).exe
Size

607KB
MD5

19d31479381cfda2c9878b427f51a0c2
SHA1

5b8774c60b71dd32e7325d0fbceb3434975ca7cc
SHA256

e3b4620b85709a793de2b777da764d094f9a6dc19ead0a7fcad953c1fb3e8550
SHA512

14ce10c974af40f5ab3e93f3bb3ff5ada22a8c2245bf45f40be0a59a75bcd9bfb2bf2288416744a2cebb93b3eb487ba070670d553ea87ca8c0e566c727bf28a2
SSDEEP

12288:DikJ/Wmo/J594F3o472LiJgSifSdq/UByol53uFb/V4YUWpcZm83:TJ/+z4F3osuiKoqsyol54bWYUK

Score

10^/10

dcrat discovery infostealer 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 21 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	1300	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1832	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1616	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2004	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3432	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	228	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3256	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4168	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4132	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1368	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4372	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2036	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2328	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5000	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2764	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1516	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3356	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4196	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2708	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1056	1040	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3392	1040	schtasks.exe	82

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral4/files/0x001c00000002ab5a-6.dat	dcrat
behavioral4/files/0x001900000002abc4-24.dat	dcrat
behavioral4/memory/3080-25-0x0000000000990000-0x0000000000A66000-memory.dmp	dcrat

Executes dropped EXE 3 IoCs

pid	Process
856	kendalcp.exe
3080	reviewDll.exe
3820	StartMenuExperienceHost.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows Defender\de-DE\wininit.exe	reviewDll.exe
File created	C:\Program Files (x86)\Windows Defender\de-DE\56085415360792	reviewDll.exe
File created	C:\Program Files\ModifiableWindowsApps\wininit.exe	reviewDll.exe
File created	C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\dllhost.exe	reviewDll.exe
File created	C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\5940a34987c991	reviewDll.exe

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

System Information Discovery
T1082

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kendalcp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4248760313-3670024077-2384670640-1000_Classes\Local Settings	reviewDll.exe
Key created	\REGISTRY\USER\S-1-5-21-4248760313-3670024077-2384670640-1000_Classes\Local Settings	kendalcp.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 21 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1832	schtasks.exe
4168	schtasks.exe
1368	schtasks.exe
2328	schtasks.exe
2708	schtasks.exe
1056	schtasks.exe
1300	schtasks.exe
2004	schtasks.exe
3432	schtasks.exe
2036	schtasks.exe
4196	schtasks.exe
3392	schtasks.exe
228	schtasks.exe
1516	schtasks.exe
3356	schtasks.exe
1616	schtasks.exe
3256	schtasks.exe
4132	schtasks.exe
4372	schtasks.exe
5000	schtasks.exe
2764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3080	reviewDll.exe
3080	reviewDll.exe
3080	reviewDll.exe
3080	reviewDll.exe
3080	reviewDll.exe
3820	StartMenuExperienceHost.exe
3820	StartMenuExperienceHost.exe
3820	StartMenuExperienceHost.exe
3820	StartMenuExperienceHost.exe
3820	StartMenuExperienceHost.exe
3820	StartMenuExperienceHost.exe
3820	StartMenuExperienceHost.exe
3820	StartMenuExperienceHost.exe
3820	StartMenuExperienceHost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3820	StartMenuExperienceHost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3080	reviewDll.exe
Token: SeDebugPrivilege	3820	StartMenuExperienceHost.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 856	2772	XBinderOutput(1).exe	77
PID 2772 wrote to memory of 856	2772	XBinderOutput(1).exe	77
PID 2772 wrote to memory of 856	2772	XBinderOutput(1).exe	77
PID 856 wrote to memory of 4748	856	kendalcp.exe	78
PID 856 wrote to memory of 4748	856	kendalcp.exe	78
PID 856 wrote to memory of 4748	856	kendalcp.exe	78
PID 4748 wrote to memory of 3000	4748	WScript.exe	79
PID 4748 wrote to memory of 3000	4748	WScript.exe	79
PID 4748 wrote to memory of 3000	4748	WScript.exe	79
PID 3000 wrote to memory of 3080	3000	cmd.exe	81
PID 3000 wrote to memory of 3080	3000	cmd.exe	81
PID 3080 wrote to memory of 1716	3080	reviewDll.exe	104
PID 3080 wrote to memory of 1716	3080	reviewDll.exe	104
PID 1716 wrote to memory of 1732	1716	cmd.exe	106
PID 1716 wrote to memory of 1732	1716	cmd.exe	106
PID 1716 wrote to memory of 3820	1716	cmd.exe	108
PID 1716 wrote to memory of 3820	1716	cmd.exe	108

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\XBinderOutput(1).exe
"C:\Users\Admin\AppData\Local\Temp\XBinderOutput(1).exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Local\Temp\kendalcp.exe
  "C:\Users\Admin\AppData\Local\Temp\kendalcp.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:856
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\blocksavesperfMonitorDll\R7uOS4kiQeNNM8oo5bGADNHtfWe.vbe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4748
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\blocksavesperfMonitorDll\SAymW4LctOmWulF1E6221.bat" "
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3000
    - - C:\blocksavesperfMonitorDll\reviewDll.exe
        
        "C:\blocksavesperfMonitorDll\reviewDll.exe"
        5⤵
        Executes dropped EXE
        Drops file in Program Files directory
        Modifies registry class
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:3080
      - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\iZF9NyS3uC.bat"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:1716
        
        C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        7⤵
        
        PID:1732
        
        C:\Recovery\WindowsRE\StartMenuExperienceHost.exe
        
        "C:\Recovery\WindowsRE\StartMenuExperienceHost.exe"
        7⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of AdjustPrivilegeToken
        
        PID:3820

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\blocksavesperfMonitorDll\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3392

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\blocksavesperfMonitorDll\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1832

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\blocksavesperfMonitorDll\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1300

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1056

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2708

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 14 /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4196

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows Defender\de-DE\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3356

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\de-DE\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1516

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows Defender\de-DE\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1616

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\StartMenuExperienceHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2764

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\StartMenuExperienceHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5000

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\StartMenuExperienceHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2004

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 13 /tr "'C:\blocksavesperfMonitorDll\cmd.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2328

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\blocksavesperfMonitorDll\cmd.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2036

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 13 /tr "'C:\blocksavesperfMonitorDll\cmd.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 5 /tr "'C:\Program Files\Google\Chrome\Application\SetupMetrics\OfficeClickToRun.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1368

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\Google\Chrome\Application\SetupMetrics\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4132

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 11 /tr "'C:\Program Files\Google\Chrome\Application\SetupMetrics\OfficeClickToRun.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4168

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 14 /tr "'C:\Users\Public\Desktop\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3256

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Users\Public\Desktop\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:228

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 5 /tr "'C:\Users\Public\Desktop\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\iZF9NyS3uC.bat

Filesize
214B

MD5
d6f2eef591904230e3e346e9b8a19513

SHA1
bce86cd7ae0e69f3dc07dd92b137ed01c2205d0a

SHA256
1c0ec4fc65fad19f20ae80f2ce53fa93a013e1a25cf047907fe9806f73d4910d

SHA512
a11fea009ff88e9f89b5689d7b9b4ddb10ff619c20e4a610abcbaa915f52a02c21cca9d85c3c5a53a6d79531f5d2b067d8dd34d23cf9ea2786cb1bb0cde34289

Download Submit
C:\Users\Admin\AppData\Local\Temp\kendalcp.exe

Filesize
1.1MB

MD5
0d015cc111d53a019e680b0bed11fcad

SHA1
3b3fb6eeba0c2ba286a4db5e850697399ccb5e36

SHA256
2b7365d9634016b0483009225b959692c290a6b17fad133e42434dc89fdf4150

SHA512
c3a7ea551d0151033dde83a3dda1042e8fe26702c84da2b630ecffb739aecb654730bb5f7ec8914189f72ca7d0ecf1352f0ca7effa938bc1d6f0ae56c3358eab

Download Submit
C:\blocksavesperfMonitorDll\R7uOS4kiQeNNM8oo5bGADNHtfWe.vbe

Filesize
222B

MD5
a6f295a2e58c722b5935cc905e81fd8b

SHA1
a2a30408197320a639e3e2f18a57fc8578c97b58

SHA256
8bcebca170fc0768cb1afb63f1350d63c3a295b26ca04602e07ec43498b9691c

SHA512
839605d7eadcdc470dd4edd117cedd976cb9f36bf0a636d08afecc6378adadf0fccb80beb44de849b6dfec814845cef8ca83ca171b39c1f6d90d55485bd06635

Download Submit
C:\blocksavesperfMonitorDll\SAymW4LctOmWulF1E6221.bat

Filesize
43B

MD5
7c582abd8874b9cc60df72d62bd86440

SHA1
564e7b01338d08f657f2c02fa8fc5b8dadb92331

SHA256
c5e95b783c6ec1b98a40edf8663370c678de43e9b657e09ca1f054618277b329

SHA512
444cf67666329ea359e221560a229990013af07d1ed074b2406e903c7ee04cf279953ad0726a96c2ca875216da68369dfdde00f905adf1de9ed93b8582bf8828

Download Submit
C:\blocksavesperfMonitorDll\reviewDll.exe

Filesize
828KB

MD5
d9dac9e1d95e84e6aec084cf2ddb3f3a

SHA1
a231a41c7ad994879b15116dcea41fdc09bb5879

SHA256
0fbeb71fb1dfe793eace5ed167f035a8f4bcc6b56d0930b6b97481f2b222b1d5

SHA512
c4aa115de6f61c7311e8654d40537cd1ce08f0fb7efd0a225a42e06ad000ed420ba905e5cc26a19cb56af951ee1441aa257c073c47911a72fff733c0db1c2f9a

Download Submit
memory/2772-11-0x00007FFDC7DF0000-0x00007FFDC88B2000-memory.dmp

Filesize
10.8MB

Download
memory/2772-0-0x00007FFDC7DF3000-0x00007FFDC7DF5000-memory.dmp

Filesize
8KB

Download
memory/2772-7-0x00007FFDC7DF0000-0x00007FFDC88B2000-memory.dmp

Filesize
10.8MB

Download
memory/2772-1-0x0000000000060000-0x00000000000FE000-memory.dmp

Filesize
632KB

Download
memory/3080-25-0x0000000000990000-0x0000000000A66000-memory.dmp

Filesize
856KB

Download
memory/3820-51-0x000000001C550000-0x000000001C55D000-memory.dmp

Filesize
52KB

Download
memory/3820-50-0x000000001C520000-0x000000001C529000-memory.dmp

Filesize
36KB

Download
memory/3820-49-0x000000001C4D0000-0x000000001C516000-memory.dmp

Filesize
280KB

Download
memory/3820-52-0x000000001C560000-0x000000001C57E000-memory.dmp

Filesize
120KB

Download
memory/3820-53-0x000000001C580000-0x000000001C58B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads