dcrat | c6244c8e4e4cdecd641017d52d344b1db6a23d05fd6a8ad338c8f4f77481f483

General

Target

02588099.exe
Size

1.3MB
MD5

6f6a61090a9add724eebbec1c558826b
SHA1

566ea8db4bcea2d078fb71be08bc8e7003e36119
SHA256

c6244c8e4e4cdecd641017d52d344b1db6a23d05fd6a8ad338c8f4f77481f483
SHA512

47d88347a9082186b9667fcf3994d2fe212f09a5665cc82017d48f8833e8a67823b6b66bf3a5dbda5369dd6d1585248389e213a4b3556e8b0b0b66c137eb8aa8
SSDEEP

24576:4LS70OsASkYS827M+8NFNzmJd+eVjW2LGLrk2WKiT:gS70OfRhxW1c2vi

Score

10^/10

dcrat infostealer rat spyware stealer

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 12 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exe

description	pid	pid_target	process
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1940	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1184	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1352	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1636	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1224	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1332	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	604	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1068	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1792	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1044	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1852	752	schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	924	752	schtasks.exe

DCRat payload 6 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

Processes:

resource	yara_rule
behavioral1/memory/2020-54-0x0000000000FC0000-0x0000000001112000-memory.dmp	dcrat
behavioral1/memory/2020-58-0x000000001AE70000-0x000000001AEF0000-memory.dmp	dcrat
C:\MSOCache\All Users\WmiPrvSE.exe	dcrat
C:\MSOCache\All Users\WmiPrvSE.exe	dcrat
C:\MSOCache\All Users\WmiPrvSE.exe	dcrat
behavioral1/memory/1464-75-0x0000000001360000-0x00000000014B2000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

Processes:

WmiPrvSE.exe

pid process

1464 WmiPrvSE.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
1464	WmiPrvSE.exe

Drops file in Program Files directory 2 IoCs

Processes:

02588099.exe

description	ioc	process
File created	C:\Program Files\Windows Sidebar\es-ES\smss.exe	02588099.exe
File created	C:\Program Files\Windows Sidebar\es-ES\69ddcba757bf72	02588099.exe

Drops file in Windows directory 2 IoCs

Processes:

02588099.exe

description	ioc	process
File created	C:\Windows\inf\.NETFramework\0409\System.exe	02588099.exe
File created	C:\Windows\inf\.NETFramework\0409\27d1bcfc3c54e0	02588099.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 12 IoCs

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

persistence

Scheduled Task

T1053

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exe

pid	process
1184	schtasks.exe
1352	schtasks.exe
1636	schtasks.exe
1224	schtasks.exe
1068	schtasks.exe
1792	schtasks.exe
1044	schtasks.exe
1940	schtasks.exe
924	schtasks.exe
604	schtasks.exe
1852	schtasks.exe
1332	schtasks.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

Processes:

02588099.exeWmiPrvSE.exe

pid	process
2020	02588099.exe
2020	02588099.exe
2020	02588099.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe
1464	WmiPrvSE.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

02588099.exeWmiPrvSE.exe

description pid process

Token: SeDebugPrivilege 2020 02588099.exe
Token: SeDebugPrivilege 1464 WmiPrvSE.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

WmiPrvSE.exe

pid process

1464 WmiPrvSE.exe

description	pid	process
Token: SeDebugPrivilege	2020	02588099.exe
Token: SeDebugPrivilege	1464	WmiPrvSE.exe

pid	process
1464	WmiPrvSE.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

02588099.exe

description	pid	process	target process
PID 2020 wrote to memory of 1464	2020	02588099.exe	WmiPrvSE.exe
PID 2020 wrote to memory of 1464	2020	02588099.exe	WmiPrvSE.exe
PID 2020 wrote to memory of 1464	2020	02588099.exe	WmiPrvSE.exe

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\02588099.exe
"C:\Users\Admin\AppData\Local\Temp\02588099.exe"
1⤵
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2020

C:\MSOCache\All Users\WmiPrvSE.exe
"C:\MSOCache\All Users\WmiPrvSE.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1464

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-0116-0409-1000-0000000FF1CE}-C\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1940

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0116-0409-1000-0000000FF1CE}-C\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1184

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-0116-0409-1000-0000000FF1CE}-C\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1352

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\WmiPrvSE.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1636

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\MSOCache\All Users\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1224

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1332

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Windows\inf\.NETFramework\0409\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:604

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\inf\.NETFramework\0409\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1068

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\Windows\inf\.NETFramework\0409\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1792

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Sidebar\es-ES\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\es-ES\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:1852

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Sidebar\es-ES\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
PID:924

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\MSOCache\All Users\WmiPrvSE.exe
Filesize
1.3MB

MD5
6f6a61090a9add724eebbec1c558826b

SHA1
566ea8db4bcea2d078fb71be08bc8e7003e36119

SHA256
c6244c8e4e4cdecd641017d52d344b1db6a23d05fd6a8ad338c8f4f77481f483

SHA512
47d88347a9082186b9667fcf3994d2fe212f09a5665cc82017d48f8833e8a67823b6b66bf3a5dbda5369dd6d1585248389e213a4b3556e8b0b0b66c137eb8aa8

Download Submit
C:\MSOCache\All Users\WmiPrvSE.exe
Filesize
1.3MB

MD5
6f6a61090a9add724eebbec1c558826b

SHA1
566ea8db4bcea2d078fb71be08bc8e7003e36119

SHA256
c6244c8e4e4cdecd641017d52d344b1db6a23d05fd6a8ad338c8f4f77481f483

SHA512
47d88347a9082186b9667fcf3994d2fe212f09a5665cc82017d48f8833e8a67823b6b66bf3a5dbda5369dd6d1585248389e213a4b3556e8b0b0b66c137eb8aa8

Download Submit
C:\MSOCache\All Users\WmiPrvSE.exe
Filesize
1.3MB

MD5
6f6a61090a9add724eebbec1c558826b

SHA1
566ea8db4bcea2d078fb71be08bc8e7003e36119

SHA256
c6244c8e4e4cdecd641017d52d344b1db6a23d05fd6a8ad338c8f4f77481f483

SHA512
47d88347a9082186b9667fcf3994d2fe212f09a5665cc82017d48f8833e8a67823b6b66bf3a5dbda5369dd6d1585248389e213a4b3556e8b0b0b66c137eb8aa8

Download Submit
memory/1464-81-0x000000001B1A0000-0x000000001B220000-memory.dmp

Filesize
512KB

Download
memory/1464-76-0x000000001B1A0000-0x000000001B220000-memory.dmp

Filesize
512KB

Download
memory/1464-75-0x0000000001360000-0x00000000014B2000-memory.dmp

Filesize
1.3MB

Download
memory/2020-58-0x000000001AE70000-0x000000001AEF0000-memory.dmp

Filesize
512KB

Download
memory/2020-60-0x00000000006F0000-0x00000000006F8000-memory.dmp

Filesize
32KB

Download
memory/2020-59-0x00000000004D0000-0x00000000004DE000-memory.dmp

Filesize
56KB

Download
memory/2020-57-0x00000000004A0000-0x00000000004B2000-memory.dmp

Filesize
72KB

Download
memory/2020-54-0x0000000000FC0000-0x0000000001112000-memory.dmp

Filesize
1.3MB

Download
memory/2020-56-0x0000000000480000-0x0000000000496000-memory.dmp

Filesize
88KB

Download
memory/2020-55-0x0000000000350000-0x000000000036C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads