dcrat | 09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3

Analysis

max time kernel
118s
max time network
147s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-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 7 IoCs

rat

resource	yara_rule
behavioral1/memory/3020-15-0x0000000000400000-0x000000000067A000-memory.dmp	family_dcrat_v2
behavioral1/memory/3020-8-0x0000000000400000-0x000000000067A000-memory.dmp	family_dcrat_v2
behavioral1/memory/3020-13-0x0000000000400000-0x000000000067A000-memory.dmp	family_dcrat_v2
behavioral1/memory/3020-12-0x0000000000400000-0x000000000067A000-memory.dmp	family_dcrat_v2
behavioral1/memory/3020-7-0x0000000000400000-0x000000000067A000-memory.dmp	family_dcrat_v2
behavioral1/memory/2504-76-0x0000000000400000-0x000000000067A000-memory.dmp	family_dcrat_v2
behavioral1/memory/2504-74-0x0000000000400000-0x000000000067A000-memory.dmp	family_dcrat_v2

Executes dropped EXE 2 IoCs

pid	Process
2908	spoolsv.exe
2504	spoolsv.exe

Loads dropped DLL 7 IoCs

pid	Process
2960	cmd.exe
2908	spoolsv.exe
2948	WerFault.exe
2948	WerFault.exe
2948	WerFault.exe
2948	WerFault.exe
2948	WerFault.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1896 set thread context of 3020	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	30
PID 2908 set thread context of 2504	2908	spoolsv.exe	38

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Photo Viewer\fr-FR\spoolsv.exe	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\fr-FR\spoolsv.exe	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
File created	C:\Program Files\Windows Photo Viewer\fr-FR\f3b6ecef712a24	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
File created	C:\Program Files\Internet Explorer\es-ES\sppsvc.exe	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
File created	C:\Program Files\Internet Explorer\es-ES\0a1fd5f707cd16	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
2576	1896	WerFault.exe	29
2948	2908	WerFault.exe	37

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	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.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
2764	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2764	PING.EXE

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
2504	spoolsv.exe
2504	spoolsv.exe
2504	spoolsv.exe
2504	spoolsv.exe
2504	spoolsv.exe
2504	spoolsv.exe
2504	spoolsv.exe
2504	spoolsv.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
Token: SeDebugPrivilege	2504	spoolsv.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 3020	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	30
PID 1896 wrote to memory of 3020	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	30
PID 1896 wrote to memory of 3020	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	30
PID 1896 wrote to memory of 3020	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	30
PID 1896 wrote to memory of 3020	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	30
PID 1896 wrote to memory of 3020	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	30
PID 1896 wrote to memory of 3020	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	30
PID 1896 wrote to memory of 3020	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	30
PID 1896 wrote to memory of 3020	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	30
PID 1896 wrote to memory of 2576	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	31
PID 1896 wrote to memory of 2576	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	31
PID 1896 wrote to memory of 2576	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	31
PID 1896 wrote to memory of 2576	1896	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	31
PID 3020 wrote to memory of 2960	3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	32
PID 3020 wrote to memory of 2960	3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	32
PID 3020 wrote to memory of 2960	3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	32
PID 3020 wrote to memory of 2960	3020	09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe	32
PID 2960 wrote to memory of 2736	2960	cmd.exe	34
PID 2960 wrote to memory of 2736	2960	cmd.exe	34
PID 2960 wrote to memory of 2736	2960	cmd.exe	34
PID 2960 wrote to memory of 2736	2960	cmd.exe	34
PID 2960 wrote to memory of 2764	2960	cmd.exe	35
PID 2960 wrote to memory of 2764	2960	cmd.exe	35
PID 2960 wrote to memory of 2764	2960	cmd.exe	35
PID 2960 wrote to memory of 2764	2960	cmd.exe	35
PID 2960 wrote to memory of 2908	2960	cmd.exe	37
PID 2960 wrote to memory of 2908	2960	cmd.exe	37
PID 2960 wrote to memory of 2908	2960	cmd.exe	37
PID 2960 wrote to memory of 2908	2960	cmd.exe	37
PID 2908 wrote to memory of 2504	2908	spoolsv.exe	38
PID 2908 wrote to memory of 2504	2908	spoolsv.exe	38
PID 2908 wrote to memory of 2504	2908	spoolsv.exe	38
PID 2908 wrote to memory of 2504	2908	spoolsv.exe	38
PID 2908 wrote to memory of 2504	2908	spoolsv.exe	38
PID 2908 wrote to memory of 2504	2908	spoolsv.exe	38
PID 2908 wrote to memory of 2504	2908	spoolsv.exe	38
PID 2908 wrote to memory of 2504	2908	spoolsv.exe	38
PID 2908 wrote to memory of 2504	2908	spoolsv.exe	38
PID 2908 wrote to memory of 2948	2908	spoolsv.exe	39
PID 2908 wrote to memory of 2948	2908	spoolsv.exe	39
PID 2908 wrote to memory of 2948	2908	spoolsv.exe	39
PID 2908 wrote to memory of 2948	2908	spoolsv.exe	39

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:1896
- C:\Users\Admin\AppData\Local\Temp\09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe
  "C:\Users\Admin\AppData\Local\Temp\09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3.exe"
  2⤵
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3020
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\DIw6JkKNjk.bat"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2960
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:2736
  - - 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:2764
  - - C:\Program Files\Windows Photo Viewer\fr-FR\spoolsv.exe
      "C:\Program Files\Windows Photo Viewer\fr-FR\spoolsv.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2908
    - - C:\Program Files\Windows Photo Viewer\fr-FR\spoolsv.exe
        
        "C:\Program Files\Windows Photo Viewer\fr-FR\spoolsv.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2504
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2908 -s 536
        5⤵
        Loads dropped DLL
        Program crash
        
        PID:2948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1896 -s 540
  2⤵
  - Program crash
  PID:2576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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:\Program Files\Internet Explorer\es-ES\sppsvc.exe

Filesize
2.5MB

MD5
f72fe0fbd65b2cc0376fc1d08813a512

SHA1
da68c3a1f66bde61c2b7bac27c1418261b0b9e1d

SHA256
09f319c554e4e5468ddae84384983edc21aff8717fc103a0cee62e132c70a6d3

SHA512
17f0ef497ab31ee122bd4377dcf6d4319b3937e08b818cb67890b62eb0caa0dff8810318b49b16fff470a99f17acc17eba3c1ea013acb4bd0d36d402e06d698d

Download Submit
C:\Users\Admin\AppData\Local\Temp\DIw6JkKNjk.bat

Filesize
183B

MD5
6cb3b26b82e2faacd6f0239ce48d6813

SHA1
10846335ce69a0afbc65d7c87c2df10068540667

SHA256
8766b98d61c0976ff3e9b08ad2132bb0ba9d2e75edad83dcf35339d5b28d90f5

SHA512
06e062b018c60b1796ee9b07bced89eed88303b75547dca77d0d83fb1058daf7f835a8631cec31f35544517c60734c0516f437587d7aba0b65ac11437b68ca63

Download Submit
memory/1896-0-0x0000000074A3E000-0x0000000074A3F000-memory.dmp

Filesize
4KB

Download
memory/1896-1-0x0000000000A00000-0x0000000000C8C000-memory.dmp

Filesize
2.5MB

Download
memory/1896-56-0x0000000074A30000-0x000000007511E000-memory.dmp

Filesize
6.9MB

Download
memory/1896-16-0x0000000074A30000-0x000000007511E000-memory.dmp

Filesize
6.9MB

Download
memory/2504-83-0x0000000002480000-0x0000000002492000-memory.dmp

Filesize
72KB

Download
memory/2504-82-0x0000000002400000-0x0000000002416000-memory.dmp

Filesize
88KB

Download
memory/2504-71-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2504-74-0x0000000000400000-0x000000000067A000-memory.dmp

Filesize
2.5MB

Download
memory/2504-76-0x0000000000400000-0x000000000067A000-memory.dmp

Filesize
2.5MB

Download
memory/2908-60-0x0000000000960000-0x0000000000BEC000-memory.dmp

Filesize
2.5MB

Download
memory/3020-28-0x00000000010A0000-0x00000000010B0000-memory.dmp

Filesize
64KB

Download
memory/3020-33-0x0000000002590000-0x00000000025A0000-memory.dmp

Filesize
64KB

Download
memory/3020-20-0x00000000007C0000-0x00000000007DC000-memory.dmp

Filesize
112KB

Download
memory/3020-21-0x0000000000CA0000-0x0000000000CB0000-memory.dmp

Filesize
64KB

Download
memory/3020-22-0x0000000000CB0000-0x0000000000CC8000-memory.dmp

Filesize
96KB

Download
memory/3020-23-0x0000000000CF0000-0x0000000000D00000-memory.dmp

Filesize
64KB

Download
memory/3020-24-0x0000000000D00000-0x0000000000D10000-memory.dmp

Filesize
64KB

Download
memory/3020-25-0x0000000000D40000-0x0000000000D4E000-memory.dmp

Filesize
56KB

Download
memory/3020-26-0x0000000000D50000-0x0000000000D5E000-memory.dmp

Filesize
56KB

Download
memory/3020-27-0x0000000000DE0000-0x0000000000DF2000-memory.dmp

Filesize
72KB

Download
memory/3020-18-0x0000000000690000-0x00000000006B6000-memory.dmp

Filesize
152KB

Download
memory/3020-29-0x00000000010B0000-0x00000000010C6000-memory.dmp

Filesize
88KB

Download
memory/3020-30-0x0000000002540000-0x0000000002552000-memory.dmp

Filesize
72KB

Download
memory/3020-31-0x0000000002550000-0x000000000255E000-memory.dmp

Filesize
56KB

Download
memory/3020-32-0x0000000002580000-0x0000000002590000-memory.dmp

Filesize
64KB

Download
memory/3020-19-0x0000000000720000-0x000000000072E000-memory.dmp

Filesize
56KB

Download
memory/3020-34-0x00000000025C0000-0x000000000261A000-memory.dmp

Filesize
360KB

Download
memory/3020-35-0x00000000026A0000-0x00000000026AE000-memory.dmp

Filesize
56KB

Download
memory/3020-36-0x00000000047C0000-0x00000000047D0000-memory.dmp

Filesize
64KB

Download
memory/3020-37-0x00000000047E0000-0x00000000047EE000-memory.dmp

Filesize
56KB

Download
memory/3020-38-0x0000000004BD0000-0x0000000004BE8000-memory.dmp

Filesize
96KB

Download
memory/3020-39-0x0000000004E10000-0x0000000004E5E000-memory.dmp

Filesize
312KB

Download
memory/3020-17-0x0000000074A30000-0x000000007511E000-memory.dmp

Filesize
6.9MB

Download
memory/3020-54-0x0000000074A30000-0x000000007511E000-memory.dmp

Filesize
6.9MB

Download
memory/3020-7-0x0000000000400000-0x000000000067A000-memory.dmp

Filesize
2.5MB

Download
memory/3020-12-0x0000000000400000-0x000000000067A000-memory.dmp

Filesize
2.5MB

Download
memory/3020-13-0x0000000000400000-0x000000000067A000-memory.dmp

Filesize
2.5MB

Download
memory/3020-5-0x0000000000400000-0x000000000067A000-memory.dmp

Filesize
2.5MB

Download
memory/3020-8-0x0000000000400000-0x000000000067A000-memory.dmp

Filesize
2.5MB

Download
memory/3020-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/3020-15-0x0000000000400000-0x000000000067A000-memory.dmp

Filesize
2.5MB

Download
memory/3020-3-0x0000000000400000-0x000000000067A000-memory.dmp

Filesize
2.5MB

Download