dcrat | 4da8bf0ff149df3da52766ea9f3c064dad494445c28956d87268ea4cc6c5abee

General

Target

neverlosecrackinstaller.exe
Size

1.1MB
MD5

eff2e9faef1c275db92ef2293b210765
SHA1

6f1270c4b3759f06504336721395e49196dda5e0
SHA256

4da8bf0ff149df3da52766ea9f3c064dad494445c28956d87268ea4cc6c5abee
SHA512

3ef3957146aaa6f3419fcc8483d76ab7e3678b75232479454ffb4205096864a906e3ad1f939e1aae10b863b5fd30b3ebe977dd2df181e6e8b2295937d33ce1f5
SSDEEP

24576:U2G/nvxW3Ww0t68Ryo5o0x/OMEyoMv6z4t+:UbA30vRyop/UzR

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

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	3916	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4080	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1064	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5060	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4400	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2348	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	384	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2600	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2156	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4740	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2476	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1712	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4760	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4744	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2316	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3060	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3560	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2928	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4260	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1220	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2616	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5112	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2020	4128	schtasks.exe	93
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4840	4128	schtasks.exe	93

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/files/0x0007000000023452-10.dat	dcrat
behavioral2/memory/460-13-0x00000000009D0000-0x0000000000AA6000-memory.dmp	dcrat

Checks computer location settings 2 TTPs 3 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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	neverlosecrackinstaller.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	Browserrefperf.exe

Executes dropped EXE 2 IoCs

pid	Process
460	Browserrefperf.exe
4532	RuntimeBroker.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
18	ipinfo.io
19	ipinfo.io

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Media Player\Media Renderer\RuntimeBroker.exe	Browserrefperf.exe
File created	C:\Program Files\Windows Media Player\Media Renderer\9e8d7a4ca61bd9	Browserrefperf.exe
File created	C:\Program Files\Windows Media Player\en-US\SppExtComObj.exe	Browserrefperf.exe
File created	C:\Program Files\Windows Media Player\en-US\e1ef82546f0b02	Browserrefperf.exe
File created	C:\Program Files (x86)\WindowsPowerShell\RuntimeBroker.exe	Browserrefperf.exe
File created	C:\Program Files (x86)\WindowsPowerShell\9e8d7a4ca61bd9	Browserrefperf.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\Globalization\Time Zone\27d1bcfc3c54e0	Browserrefperf.exe
File created	C:\Windows\TAPI\backgroundTaskHost.exe	Browserrefperf.exe
File opened for modification	C:\Windows\TAPI\backgroundTaskHost.exe	Browserrefperf.exe
File created	C:\Windows\TAPI\eddb19405b7ce1	Browserrefperf.exe
File created	C:\Windows\Globalization\Time Zone\System.exe	Browserrefperf.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	neverlosecrackinstaller.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000_Classes\Local Settings	neverlosecrackinstaller.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 24 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4760	schtasks.exe
3560	schtasks.exe
2928	schtasks.exe
5112	schtasks.exe
2348	schtasks.exe
4400	schtasks.exe
2600	schtasks.exe
1712	schtasks.exe
5060	schtasks.exe
4744	schtasks.exe
2316	schtasks.exe
3060	schtasks.exe
4260	schtasks.exe
2020	schtasks.exe
384	schtasks.exe
4080	schtasks.exe
1064	schtasks.exe
2156	schtasks.exe
4740	schtasks.exe
2476	schtasks.exe
1220	schtasks.exe
2616	schtasks.exe
3916	schtasks.exe
4840	schtasks.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
460	Browserrefperf.exe
4532	RuntimeBroker.exe
4532	RuntimeBroker.exe
4532	RuntimeBroker.exe
4532	RuntimeBroker.exe
4532	RuntimeBroker.exe
4532	RuntimeBroker.exe
4532	RuntimeBroker.exe
4532	RuntimeBroker.exe
4532	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	460	Browserrefperf.exe
Token: SeDebugPrivilege	4532	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 3420	4536	neverlosecrackinstaller.exe	88
PID 4536 wrote to memory of 3420	4536	neverlosecrackinstaller.exe	88
PID 4536 wrote to memory of 3420	4536	neverlosecrackinstaller.exe	88
PID 3420 wrote to memory of 5088	3420	WScript.exe	90
PID 3420 wrote to memory of 5088	3420	WScript.exe	90
PID 3420 wrote to memory of 5088	3420	WScript.exe	90
PID 5088 wrote to memory of 460	5088	cmd.exe	92
PID 5088 wrote to memory of 460	5088	cmd.exe	92
PID 460 wrote to memory of 4532	460	Browserrefperf.exe	118
PID 460 wrote to memory of 4532	460	Browserrefperf.exe	118

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\neverlosecrackinstaller.exe
"C:\Users\Admin\AppData\Local\Temp\neverlosecrackinstaller.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\ServerbrowserfontCommon\Q5hCHFGU8l.vbe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3420
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\ServerbrowserfontCommon\UdiJPz86qHeBwQZjDMbGciKs.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5088
  - - C:\ServerbrowserfontCommon\Browserrefperf.exe
      "C:\ServerbrowserfontCommon\Browserrefperf.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Drops file in Program Files directory
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:460
    - - C:\Program Files\Windows Media Player\Media Renderer\RuntimeBroker.exe
        
        "C:\Program Files\Windows Media Player\Media Renderer\RuntimeBroker.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4532

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 8 /tr "'C:\Windows\TAPI\backgroundTaskHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3916

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Windows\TAPI\backgroundTaskHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4080

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 7 /tr "'C:\Windows\TAPI\backgroundTaskHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1064

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows Media Player\en-US\SppExtComObj.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5060

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files\Windows Media Player\en-US\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4400

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Media Player\en-US\SppExtComObj.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2348

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Users\Public\Libraries\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:384

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\Public\Libraries\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2600

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 5 /tr "'C:\Users\Public\Libraries\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2156

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 8 /tr "'C:\ServerbrowserfontCommon\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4740

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\ServerbrowserfontCommon\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2476

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\ServerbrowserfontCommon\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1712

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\WindowsPowerShell\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4760

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4744

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\WindowsPowerShell\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2316

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 11 /tr "'C:\Windows\Globalization\Time Zone\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3060

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\Globalization\Time Zone\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3560

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 7 /tr "'C:\Windows\Globalization\Time Zone\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2928

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\ServerbrowserfontCommon\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4260

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\ServerbrowserfontCommon\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1220

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\ServerbrowserfontCommon\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2616

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Media Player\Media Renderer\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5112

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Windows Media Player\Media Renderer\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2020

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Media Player\Media Renderer\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ServerbrowserfontCommon\Browserrefperf.exe

Filesize
828KB

MD5
55c74b4a27cdd137e92c5851a8da3d01

SHA1
8d558d8ac9d79ded12117f85408231babf295361

SHA256
07832d9f3ada7a274116dccfde69897c2eefe72a1de4eb7131d58358d90fe422

SHA512
ff80991354cb74bc9abfb7363a47d8bbc10c3a95eeb35de772f50fdf43fbb16e3153be9cb07636cc2d44dbe9c27ead056d0589b0a233677a08bb4dea43de7dcd

Download Submit
C:\ServerbrowserfontCommon\Q5hCHFGU8l.vbe

Filesize
224B

MD5
da023c5203666d614738df690fed6a31

SHA1
1ebb7f94b4c113150652fa867c5dca0ff1b78c66

SHA256
7d811e299d33805033841886dd4611c902c4332c5a2f87946ac42030eb06f247

SHA512
c3b6bf19216c0333713ace584622e50ec802ac449182eb538ea309bbd83a7e10f87370f6d735750557ac595c005adca93467834f76d0d6ef35cd2b9b05faef64

Download Submit
C:\ServerbrowserfontCommon\UdiJPz86qHeBwQZjDMbGciKs.bat

Filesize
47B

MD5
1d2d5c41a2f3a9b263b8b7b4016347f4

SHA1
4a1cb79ebd8b16789cb3b81f074afaf7c17c974e

SHA256
d99c06592d8e25dece6048fbb60875e5bbcf3e69c3f1857ab8395447f6b90b8d

SHA512
a2fccd4cc2885f7e98af17ac2c77b0670fac2ed150e4d5accd81db85d1fca1bab9c7f83f1934da1aae851af008e920090371f5803273190591c443cb463f96d8

Download Submit
memory/460-12-0x00007FFF6D143000-0x00007FFF6D145000-memory.dmp

Filesize
8KB

Download
memory/460-13-0x00000000009D0000-0x0000000000AA6000-memory.dmp

Filesize
856KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads