dcrat | 6fe3e7b8886862e6c2e9ea8684396da80e57ca2c1f85026e7edc0ae6cef80c35

General

Target

2462e26144fa12fd2ca9dce4d2c13420.exe
Size

1002KB
MD5

2462e26144fa12fd2ca9dce4d2c13420
SHA1

39151c10b343122006aaa172f1f1554a38137528
SHA256

6fe3e7b8886862e6c2e9ea8684396da80e57ca2c1f85026e7edc0ae6cef80c35
SHA512

d9dc3df7635afd99e49f2851443ab274063badbfb3382eab4fdf373c5a5aede7d3755f009000bc6dd3a6318bf158e8c4bd00999cb1a09cfbb5239b513ea858ca
SSDEEP

24576:IxBKgJkikTpvNX6Uc3GawHa/Z2twSbIAflddj6T:IiXLv8UAw6/oPEudj6

Score

10^/10

dcrat 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

Process spawned unexpected child process 24 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	1716	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1216	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1732	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1116	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1464	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2044	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1660	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	880	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1220	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	932	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1600	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1908	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1272	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	956	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1484	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	884	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1828	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1676	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1688	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	904	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1112	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1940	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1996	756	schtasks.exe	26
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	268	756	schtasks.exe	26

DCRat payload 6 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2024-54-0x00000000012F0000-0x00000000013F2000-memory.dmp	dcrat
behavioral1/files/0x00080000000122ff-65.dat	dcrat
behavioral1/files/0x000700000001267f-77.dat	dcrat
behavioral1/files/0x000700000001267f-78.dat	dcrat
behavioral1/memory/1096-79-0x0000000000E60000-0x0000000000F62000-memory.dmp	dcrat
behavioral1/memory/1096-81-0x000000001A730000-0x000000001A7B0000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
1096	explorer.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Mail\es-ES\wininit.exe	2462e26144fa12fd2ca9dce4d2c13420.exe
File created	C:\Program Files\Windows Mail\es-ES\56085415360792	2462e26144fa12fd2ca9dce4d2c13420.exe
File created	C:\Program Files\Windows Sidebar\ja-JP\dwm.exe	2462e26144fa12fd2ca9dce4d2c13420.exe
File created	C:\Program Files\Windows Sidebar\ja-JP\6cb0b6c459d5d3	2462e26144fa12fd2ca9dce4d2c13420.exe
File created	C:\Program Files\Internet Explorer\es-ES\System.exe	2462e26144fa12fd2ca9dce4d2c13420.exe
File created	C:\Program Files\Internet Explorer\es-ES\27d1bcfc3c54e0	2462e26144fa12fd2ca9dce4d2c13420.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 24 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
884	schtasks.exe
1688	schtasks.exe
1732	schtasks.exe
1660	schtasks.exe
880	schtasks.exe
1600	schtasks.exe
1272	schtasks.exe
1484	schtasks.exe
1996	schtasks.exe
268	schtasks.exe
1716	schtasks.exe
1216	schtasks.exe
1116	schtasks.exe
2044	schtasks.exe
956	schtasks.exe
1112	schtasks.exe
1220	schtasks.exe
932	schtasks.exe
1908	schtasks.exe
904	schtasks.exe
1464	schtasks.exe
1828	schtasks.exe
1676	schtasks.exe
1940	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2024	2462e26144fa12fd2ca9dce4d2c13420.exe
2024	2462e26144fa12fd2ca9dce4d2c13420.exe
1096	explorer.exe
1096	explorer.exe
1096	explorer.exe
1096	explorer.exe
1096	explorer.exe
1096	explorer.exe
1096	explorer.exe
1096	explorer.exe
1096	explorer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2024	2462e26144fa12fd2ca9dce4d2c13420.exe
Token: SeDebugPrivilege	1096	explorer.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 1096	2024	2462e26144fa12fd2ca9dce4d2c13420.exe	51
PID 2024 wrote to memory of 1096	2024	2462e26144fa12fd2ca9dce4d2c13420.exe	51
PID 2024 wrote to memory of 1096	2024	2462e26144fa12fd2ca9dce4d2c13420.exe	51

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\2462e26144fa12fd2ca9dce4d2c13420.exe
"C:\Users\Admin\AppData\Local\Temp\2462e26144fa12fd2ca9dce4d2c13420.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2024
- C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\explorer.exe
  "C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\explorer.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1096

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1716

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1216

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1732

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Music\lsm.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1116

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Users\Admin\Music\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1464

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\Music\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:2044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 14 /tr "'C:\Users\Default User\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1660

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Users\Default User\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:880

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1220

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Mail\es-ES\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:932

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Windows Mail\es-ES\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1600

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Mail\es-ES\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1908

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 5 /tr "'C:\Recovery\f8d1ec42-b1b7-11ed-bba7-be56d16f7d95\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1272

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Recovery\f8d1ec42-b1b7-11ed-bba7-be56d16f7d95\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:956

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 13 /tr "'C:\Recovery\f8d1ec42-b1b7-11ed-bba7-be56d16f7d95\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1484

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Sidebar\ja-JP\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:884

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\ja-JP\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1828

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Sidebar\ja-JP\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1676

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\Program Files\Internet Explorer\es-ES\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1688

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\es-ES\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:904

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 9 /tr "'C:\Program Files\Internet Explorer\es-ES\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1112

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1996

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:268

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\explorer.exe

Filesize
1002KB

MD5
2462e26144fa12fd2ca9dce4d2c13420

SHA1
39151c10b343122006aaa172f1f1554a38137528

SHA256
6fe3e7b8886862e6c2e9ea8684396da80e57ca2c1f85026e7edc0ae6cef80c35

SHA512
d9dc3df7635afd99e49f2851443ab274063badbfb3382eab4fdf373c5a5aede7d3755f009000bc6dd3a6318bf158e8c4bd00999cb1a09cfbb5239b513ea858ca

Download Submit
C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\explorer.exe

Filesize
1002KB

MD5
2462e26144fa12fd2ca9dce4d2c13420

SHA1
39151c10b343122006aaa172f1f1554a38137528

SHA256
6fe3e7b8886862e6c2e9ea8684396da80e57ca2c1f85026e7edc0ae6cef80c35

SHA512
d9dc3df7635afd99e49f2851443ab274063badbfb3382eab4fdf373c5a5aede7d3755f009000bc6dd3a6318bf158e8c4bd00999cb1a09cfbb5239b513ea858ca

Download Submit
C:\Recovery\f8d1ec42-b1b7-11ed-bba7-be56d16f7d95\winlogon.exe

Filesize
1002KB

MD5
2462e26144fa12fd2ca9dce4d2c13420

SHA1
39151c10b343122006aaa172f1f1554a38137528

SHA256
6fe3e7b8886862e6c2e9ea8684396da80e57ca2c1f85026e7edc0ae6cef80c35

SHA512
d9dc3df7635afd99e49f2851443ab274063badbfb3382eab4fdf373c5a5aede7d3755f009000bc6dd3a6318bf158e8c4bd00999cb1a09cfbb5239b513ea858ca

Download Submit
memory/1096-79-0x0000000000E60000-0x0000000000F62000-memory.dmp

Filesize
1.0MB

Download
memory/1096-80-0x000000001A730000-0x000000001A7B0000-memory.dmp

Filesize
512KB

Download
memory/1096-81-0x000000001A730000-0x000000001A7B0000-memory.dmp

Filesize
512KB

Download
memory/2024-54-0x00000000012F0000-0x00000000013F2000-memory.dmp

Filesize
1.0MB

Download
memory/2024-55-0x000000001ABD0000-0x000000001AC50000-memory.dmp

Filesize
512KB

Download
memory/2024-56-0x0000000000240000-0x000000000025C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads