dcrat | 09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3

Analysis

max time kernel
95s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
31-01-2025 03:31

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General

Target

09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
Size

2.5MB
MD5

f72fe0fbd65b2cc0376fc1d08813a512
SHA1

da68c3a1f66bde61c2b7bac27c1418261b0b9e1d
SHA256

09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3
SHA512

17f0ef497ab31ee122bd4377dcf6d4319b3937e08b818cb67890b62eb0caa0dff8810318b49b16fff470a99f17acc17eba3c1ea013acb4bd0d36d402e06d698d
SSDEEP

49152:S3KYg14K5F/STt1piw5bpMK31jZSDW0Pg3nM0n4oyy0cz8F0yqAoThNSi:S67n5pw1pdbKwjZSDW0Pg31X0q8FTqA2

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

DCRat payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/512-5-0x0000000000400000-0x000000000067A000-memory.dmp	family_dcrat_v2

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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe

Executes dropped EXE 3 IoCs

pid	Process
2944	RuntimeBroker.exe
1204	RuntimeBroker.exe
3268	RuntimeBroker.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5048 set thread context of 512	5048	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	86
PID 2944 set thread context of 3268	2944	RuntimeBroker.exe	96

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Media Player\es-ES\27d1bcfc3c54e0	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
File created	C:\Program Files\Windows Media Player\es-ES\System.exe	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Installer\RuntimeBroker.exe	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
File created	C:\Windows\Installer\9e8d7a4ca61bd9	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1996	5048	WerFault.exe	82
1236	2944	WerFault.exe	94

System Location Discovery: System Language Discovery 1 TTPs 7 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	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
116	PING.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2436272344-4274332273-444425594-1000_Classes\Local Settings	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
116	PING.EXE

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
3268	RuntimeBroker.exe
3268	RuntimeBroker.exe
3268	RuntimeBroker.exe
3268	RuntimeBroker.exe
3268	RuntimeBroker.exe
3268	RuntimeBroker.exe
3268	RuntimeBroker.exe
3268	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
Token: SeDebugPrivilege	3268	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 512	5048	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	86
PID 5048 wrote to memory of 512	5048	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	86
PID 5048 wrote to memory of 512	5048	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	86
PID 5048 wrote to memory of 512	5048	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	86
PID 5048 wrote to memory of 512	5048	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	86
PID 5048 wrote to memory of 512	5048	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	86
PID 5048 wrote to memory of 512	5048	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	86
PID 5048 wrote to memory of 512	5048	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	86
PID 512 wrote to memory of 3228	512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	90
PID 512 wrote to memory of 3228	512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	90
PID 512 wrote to memory of 3228	512	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	90
PID 3228 wrote to memory of 4756	3228	cmd.exe	92
PID 3228 wrote to memory of 4756	3228	cmd.exe	92
PID 3228 wrote to memory of 4756	3228	cmd.exe	92
PID 3228 wrote to memory of 116	3228	cmd.exe	93
PID 3228 wrote to memory of 116	3228	cmd.exe	93
PID 3228 wrote to memory of 116	3228	cmd.exe	93
PID 3228 wrote to memory of 2944	3228	cmd.exe	94
PID 3228 wrote to memory of 2944	3228	cmd.exe	94
PID 3228 wrote to memory of 2944	3228	cmd.exe	94
PID 2944 wrote to memory of 1204	2944	RuntimeBroker.exe	95
PID 2944 wrote to memory of 1204	2944	RuntimeBroker.exe	95
PID 2944 wrote to memory of 1204	2944	RuntimeBroker.exe	95
PID 2944 wrote to memory of 3268	2944	RuntimeBroker.exe	96
PID 2944 wrote to memory of 3268	2944	RuntimeBroker.exe	96
PID 2944 wrote to memory of 3268	2944	RuntimeBroker.exe	96
PID 2944 wrote to memory of 3268	2944	RuntimeBroker.exe	96
PID 2944 wrote to memory of 3268	2944	RuntimeBroker.exe	96
PID 2944 wrote to memory of 3268	2944	RuntimeBroker.exe	96
PID 2944 wrote to memory of 3268	2944	RuntimeBroker.exe	96
PID 2944 wrote to memory of 3268	2944	RuntimeBroker.exe	96

C:\Users\Admin\AppData\Local\Temp\09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
"C:\Users\Admin\AppData\Local\Temp\09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Users\Admin\AppData\Local\Temp\09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
  "C:\Users\Admin\AppData\Local\Temp\09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe"
  2⤵
  - Checks computer location settings
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:512
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\KJELcpVi8R.bat"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3228
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:4756
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 10 localhost
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:116
  - - C:\Windows\Installer\RuntimeBroker.exe
      "C:\Windows\Installer\RuntimeBroker.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2944
    - - C:\Windows\Installer\RuntimeBroker.exe
        
        "C:\Windows\Installer\RuntimeBroker.exe"
        5⤵
        Executes dropped EXE
        
        PID:1204
    - - C:\Windows\Installer\RuntimeBroker.exe
        
        "C:\Windows\Installer\RuntimeBroker.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3268
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 864
        5⤵
        Program crash
        
        PID:1236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 824
  2⤵
  - Program crash
  PID:1996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5048 -ip 5048
1⤵
PID:3396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2944 -ip 2944
1⤵
PID:3656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\KJELcpVi8R.bat

Filesize
166B

MD5
eca2aad2f79ab993401424c6b7aa4b5f

SHA1
61bee13d44a76ad63280046637549324a094c14e

SHA256
b1fb0f4db7555c4cdd19c3b1f56950d0812756f2a48d42b42cf9835439175fd7

SHA512
1b448e2e4183b3b5208dd4f02131a9b970c529c491f212e2cf6cf7caaf7630bddd0150c4046c469e13699f954936148ecab419bae87e1fc75e0e43e69401205c

Download Submit
C:\Users\Default\lsass.exe

Filesize
2.5MB

MD5
f72fe0fbd65b2cc0376fc1d08813a512

SHA1
da68c3a1f66bde61c2b7bac27c1418261b0b9e1d

SHA256
09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3

SHA512
17f0ef497ab31ee122bd4377dcf6d4319b3937e08b818cb67890b62eb0caa0dff8810318b49b16fff470a99f17acc17eba3c1ea013acb4bd0d36d402e06d698d

Download Submit
memory/512-20-0x0000000005B00000-0x0000000005B12000-memory.dmp

Filesize
72KB

Download
memory/512-34-0x0000000006380000-0x00000000063CE000-memory.dmp

Filesize
312KB

Download
memory/512-23-0x0000000005B60000-0x0000000005B72000-memory.dmp

Filesize
72KB

Download
memory/512-22-0x0000000005B50000-0x0000000005B66000-memory.dmp

Filesize
88KB

Download
memory/512-8-0x0000000074FC0000-0x0000000075770000-memory.dmp

Filesize
7.7MB

Download
memory/512-9-0x0000000005870000-0x0000000005896000-memory.dmp

Filesize
152KB

Download
memory/512-10-0x0000000005930000-0x00000000059C2000-memory.dmp

Filesize
584KB

Download
memory/512-11-0x00000000058F0000-0x00000000058FE000-memory.dmp

Filesize
56KB

Download
memory/512-12-0x0000000005900000-0x000000000591C000-memory.dmp

Filesize
112KB

Download
memory/512-14-0x00000000059E0000-0x00000000059F0000-memory.dmp

Filesize
64KB

Download
memory/512-13-0x0000000005A30000-0x0000000005A80000-memory.dmp

Filesize
320KB

Download
memory/512-16-0x0000000005A80000-0x0000000005A90000-memory.dmp

Filesize
64KB

Download
memory/512-15-0x0000000005A00000-0x0000000005A18000-memory.dmp

Filesize
96KB

Download
memory/512-17-0x0000000005AA0000-0x0000000005AB0000-memory.dmp

Filesize
64KB

Download
memory/512-19-0x0000000005AF0000-0x0000000005AFE000-memory.dmp

Filesize
56KB

Download
memory/512-18-0x0000000005AB0000-0x0000000005ABE000-memory.dmp

Filesize
56KB

Download
memory/512-50-0x0000000074FC0000-0x0000000075770000-memory.dmp

Filesize
7.7MB

Download
memory/512-21-0x0000000005B10000-0x0000000005B20000-memory.dmp

Filesize
64KB

Download
memory/512-7-0x0000000074FC0000-0x0000000075770000-memory.dmp

Filesize
7.7MB

Download
memory/512-32-0x0000000006340000-0x0000000006358000-memory.dmp

Filesize
96KB

Download
memory/512-26-0x00000000061B0000-0x00000000061C0000-memory.dmp

Filesize
64KB

Download
memory/512-24-0x0000000006680000-0x0000000006BAC000-memory.dmp

Filesize
5.2MB

Download
memory/512-25-0x00000000061A0000-0x00000000061AE000-memory.dmp

Filesize
56KB

Download
memory/512-27-0x00000000061E0000-0x00000000061F0000-memory.dmp

Filesize
64KB

Download
memory/512-28-0x0000000006200000-0x000000000625A000-memory.dmp

Filesize
360KB

Download
memory/512-30-0x0000000006300000-0x0000000006310000-memory.dmp

Filesize
64KB

Download
memory/512-31-0x0000000006320000-0x000000000632E000-memory.dmp

Filesize
56KB

Download
memory/512-29-0x00000000062E0000-0x00000000062EE000-memory.dmp

Filesize
56KB

Download
memory/512-5-0x0000000000400000-0x000000000067A000-memory.dmp

Filesize
2.5MB

Download
memory/2944-60-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/2944-55-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3268-61-0x0000000006EA0000-0x0000000006F06000-memory.dmp

Filesize
408KB

Download
memory/5048-33-0x0000000074FC0000-0x0000000075770000-memory.dmp

Filesize
7.7MB

Download
memory/5048-2-0x00000000056B0000-0x0000000005C54000-memory.dmp

Filesize
5.6MB

Download
memory/5048-0-0x0000000074FCE000-0x0000000074FCF000-memory.dmp

Filesize
4KB

Download
memory/5048-1-0x00000000005B0000-0x000000000083C000-memory.dmp

Filesize
2.5MB

Download
memory/5048-6-0x0000000074FC0000-0x0000000075770000-memory.dmp

Filesize
7.7MB

Download