dcrat | 195688fdc5454fb7f6ba8188015e395bfe86876a9c0e28b818944ee264f0e77c

Resubmissions

21/08/2024, 19:30

240821-x76q3sweqg 10

21/08/2024, 17:42

240821-v92h2avgpj 10

12/06/2024, 16:01

240612-tgps4a1bqh 10

Analysis

max time kernel
141s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/08/2024, 19:30

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Report Analysis Logs

General

Target

0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
Size

9.4MB
MD5

813b749967045532f86e6442447bcd8b
SHA1

8d0615e7f7ba672a3fc94c05a9451f9d08797af7
SHA256

0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464
SHA512

47c16f403ab33ebb9e59c7c3a053dc29d0d654174d2be9153966ad9fc873e641f34ab44c7e38fb4c6fd376b384d4e1da0dacafb384e9abb1c7eb92cb32533877
SSDEEP

24576:GYx7SFGwWG8/Ad5kybgeK8uQY2ZqR7NlaDbTxnVhv2MMLdGIhJ:IFFbK8q2ZhDbTNv2MuV

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 payload 1 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral8/memory/4492-6-0x0000000000400000-0x0000000000538000-memory.dmp	dcrat

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe

Executes dropped EXE 1 IoCs

pid	Process
5096	RuntimeBroker.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs

pid	Process
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3152 set thread context of 4492	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	102

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Defender\fr-FR\9e8d7a4ca61bd92aff00cc37a7a4d62a2cac998d	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Legal\ENU\sysmon.exe	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Legal\ENU\121e5b5079f7c0e46d90f99b3864022518bbbda9	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
File created	C:\Program Files\Windows Defender\fr-FR\RuntimeBroker.exe	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.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
2404	3152	WerFault.exe	86
2712	5096	WerFault.exe	119

System Location Discovery: System Language Discovery 1 TTPs 14 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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 3 IoCs

evasion

pid	Process
1872	timeout.exe
3460	timeout.exe
756	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1416	schtasks.exe
1656	schtasks.exe
1628	schtasks.exe
1408	schtasks.exe
3268	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
Token: SeDebugPrivilege	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 3152 wrote to memory of 2424	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	89
PID 3152 wrote to memory of 2424	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	89
PID 3152 wrote to memory of 2424	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	89
PID 2424 wrote to memory of 756	2424	cmd.exe	91
PID 2424 wrote to memory of 756	2424	cmd.exe	91
PID 2424 wrote to memory of 756	2424	cmd.exe	91
PID 3152 wrote to memory of 4572	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	92
PID 3152 wrote to memory of 4572	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	92
PID 3152 wrote to memory of 4572	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	92
PID 4572 wrote to memory of 1872	4572	cmd.exe	94
PID 4572 wrote to memory of 1872	4572	cmd.exe	94
PID 4572 wrote to memory of 1872	4572	cmd.exe	94
PID 3152 wrote to memory of 4024	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	97
PID 3152 wrote to memory of 4024	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	97
PID 3152 wrote to memory of 4024	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	97
PID 4024 wrote to memory of 3460	4024	cmd.exe	99
PID 4024 wrote to memory of 3460	4024	cmd.exe	99
PID 4024 wrote to memory of 3460	4024	cmd.exe	99
PID 3152 wrote to memory of 4492	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	102
PID 3152 wrote to memory of 4492	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	102
PID 3152 wrote to memory of 4492	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	102
PID 3152 wrote to memory of 4492	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	102
PID 3152 wrote to memory of 4492	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	102
PID 3152 wrote to memory of 4492	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	102
PID 3152 wrote to memory of 4492	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	102
PID 3152 wrote to memory of 4492	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	102
PID 3152 wrote to memory of 4492	3152	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	102
PID 4492 wrote to memory of 1656	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	109
PID 4492 wrote to memory of 1656	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	109
PID 4492 wrote to memory of 1656	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	109
PID 4492 wrote to memory of 1628	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	111
PID 4492 wrote to memory of 1628	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	111
PID 4492 wrote to memory of 1628	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	111
PID 4492 wrote to memory of 1408	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	113
PID 4492 wrote to memory of 1408	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	113
PID 4492 wrote to memory of 1408	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	113
PID 4492 wrote to memory of 3268	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	115
PID 4492 wrote to memory of 3268	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	115
PID 4492 wrote to memory of 3268	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	115
PID 4492 wrote to memory of 1416	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	117
PID 4492 wrote to memory of 1416	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	117
PID 4492 wrote to memory of 1416	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	117
PID 4492 wrote to memory of 5096	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	119
PID 4492 wrote to memory of 5096	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	119
PID 4492 wrote to memory of 5096	4492	0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe	119

C:\Users\Admin\AppData\Local\Temp\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
"C:\Users\Admin\AppData\Local\Temp\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe"
1⤵
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2424
- - C:\Windows\SysWOW64\timeout.exe
    timeout 1
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:756
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4572
- - C:\Windows\SysWOW64\timeout.exe
    timeout 1
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4024
- - C:\Windows\SysWOW64\timeout.exe
    timeout 1
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3460
- C:\Users\Admin\AppData\Local\Temp\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.exe
  "C:\Users\Admin\AppData\Local\Temp\0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464.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:4492
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "unsecapp" /sc ONLOGON /tr "'C:\ProgramData\Templates\unsecapp.exe'" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1656
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\ProgramData\Package Cache\{61087a79-ac85-455c-934d-1fa22cc64f36}\RuntimeBroker.exe'" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1628
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "System" /sc ONLOGON /tr "'C:\PerfLogs\System.exe'" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1408
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Legal\ENU\sysmon.exe'" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3268
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\fr-FR\RuntimeBroker.exe'" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1416
- - C:\Program Files\Windows Defender\fr-FR\RuntimeBroker.exe
    "C:\Program Files\Windows Defender\fr-FR\RuntimeBroker.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5096
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 816
      4⤵
      Program crash
      PID:2712
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3152 -s 1628
  2⤵
  - Program crash
  PID:2404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3152 -ip 3152
1⤵
PID:952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 5096 -ip 5096
1⤵
PID:2884

Network

MITRE ATT&CK Enterprise v15

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

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\Windows Defender\fr-FR\RuntimeBroker.exe

Filesize
9.4MB

MD5
813b749967045532f86e6442447bcd8b

SHA1
8d0615e7f7ba672a3fc94c05a9451f9d08797af7

SHA256
0d5fa75218e5eb97fccbcf36d3bbd9cd77247260977f69c50deb29399ee0e464

SHA512
47c16f403ab33ebb9e59c7c3a053dc29d0d654174d2be9153966ad9fc873e641f34ab44c7e38fb4c6fd376b384d4e1da0dacafb384e9abb1c7eb92cb32533877

Download Submit
memory/3152-0-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

Filesize
4KB

Download
memory/3152-1-0x0000000000FA0000-0x00000000018FC000-memory.dmp

Filesize
9.4MB

Download
memory/3152-2-0x00000000061E0000-0x000000000627C000-memory.dmp

Filesize
624KB

Download
memory/3152-3-0x0000000007380000-0x00000000074C6000-memory.dmp

Filesize
1.3MB

Download
memory/3152-4-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/3152-5-0x000000000B930000-0x000000000BED4000-memory.dmp

Filesize
5.6MB

Download
memory/3152-8-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4492-6-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4492-7-0x0000000005E60000-0x0000000005EC6000-memory.dmp

Filesize
408KB

Download
memory/4492-9-0x0000000006C60000-0x0000000006CF2000-memory.dmp

Filesize
584KB

Download