dcrat | db584544b07377ff63a4d73244080aa00ed64f4f358419d879b068c56fcee837

General

Target

WaveCrackByTq893.exe
Size

2.6MB
MD5

96fc82b7358cd1693d8e1a98a559a3ac
SHA1

86aa0c234c4e9b5887239d3693ff9e43900c7411
SHA256

db584544b07377ff63a4d73244080aa00ed64f4f358419d879b068c56fcee837
SHA512

da0d7898e599b4fd96a1d6326bcad4880708679e0864d46a47653f4c96ff8f401fb72a161112511c4ac4f2eec50fc18e06367bb9a67ac1a7103727d1969fb357
SSDEEP

49152:UbA30ad1pTKLPbJfcBxP2KQLLzvQsTSKmwFWUjUY1:Ub01p2LlfcLP2KwzvQynWUQM

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

Process spawned unexpected child process 12 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	2356	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1704	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2404	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2676	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2372	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2248	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2184	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2172	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2528	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2928	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2888	576	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2104	576	schtasks.exe	35

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x00060000000186c5-15.dat	dcrat
behavioral1/memory/2812-18-0x0000000000F40000-0x0000000001192000-memory.dmp	dcrat
behavioral1/memory/2932-40-0x0000000000980000-0x0000000000BD2000-memory.dmp	dcrat

Executes dropped EXE 2 IoCs

pid	Process
2812	providerDllcommon.exe
2932	WmiPrvSE.exe

Loads dropped DLL 2 IoCs

pid	Process
2712	cmd.exe
2712	cmd.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows Media Player\Skins\winlogon.exe	providerDllcommon.exe
File created	C:\Program Files (x86)\Windows Media Player\Skins\cc11b995f2a76d	providerDllcommon.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 4 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	WaveCrackByTq893.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 12 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2356	schtasks.exe
1704	schtasks.exe
2404	schtasks.exe
2676	schtasks.exe
2372	schtasks.exe
2248	schtasks.exe
2184	schtasks.exe
2172	schtasks.exe
2528	schtasks.exe
2928	schtasks.exe
2888	schtasks.exe
2104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2812	providerDllcommon.exe
2932	WmiPrvSE.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2812	providerDllcommon.exe
Token: SeDebugPrivilege	2932	WmiPrvSE.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2944 wrote to memory of 2852	2944	WaveCrackByTq893.exe	30
PID 2944 wrote to memory of 2852	2944	WaveCrackByTq893.exe	30
PID 2944 wrote to memory of 2852	2944	WaveCrackByTq893.exe	30
PID 2944 wrote to memory of 2852	2944	WaveCrackByTq893.exe	30
PID 2944 wrote to memory of 2884	2944	WaveCrackByTq893.exe	31
PID 2944 wrote to memory of 2884	2944	WaveCrackByTq893.exe	31
PID 2944 wrote to memory of 2884	2944	WaveCrackByTq893.exe	31
PID 2944 wrote to memory of 2884	2944	WaveCrackByTq893.exe	31
PID 2852 wrote to memory of 2712	2852	WScript.exe	32
PID 2852 wrote to memory of 2712	2852	WScript.exe	32
PID 2852 wrote to memory of 2712	2852	WScript.exe	32
PID 2852 wrote to memory of 2712	2852	WScript.exe	32
PID 2712 wrote to memory of 2812	2712	cmd.exe	34
PID 2712 wrote to memory of 2812	2712	cmd.exe	34
PID 2712 wrote to memory of 2812	2712	cmd.exe	34
PID 2712 wrote to memory of 2812	2712	cmd.exe	34
PID 2812 wrote to memory of 2932	2812	providerDllcommon.exe	48
PID 2812 wrote to memory of 2932	2812	providerDllcommon.exe	48
PID 2812 wrote to memory of 2932	2812	providerDllcommon.exe	48

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\WaveCrackByTq893.exe
"C:\Users\Admin\AppData\Local\Temp\WaveCrackByTq893.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\blockProviderreviewwin\4Qgcue5Dj.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2852
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\blockProviderreviewwin\9wAH2eg9ZDmdczf.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2712
  - - C:\blockProviderreviewwin\providerDllcommon.exe
      "C:\blockProviderreviewwin\providerDllcommon.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2812
    - - C:\blockProviderreviewwin\WmiPrvSE.exe
        
        "C:\blockProviderreviewwin\WmiPrvSE.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2932
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\blockProviderreviewwin\file.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2884

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\blockProviderreviewwin\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2356

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\blockProviderreviewwin\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1704

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\blockProviderreviewwin\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2404

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 10 /tr "'C:\blockProviderreviewwin\WmiPrvSE.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2676

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\blockProviderreviewwin\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\blockProviderreviewwin\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2248

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Media Player\Skins\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2184

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Media Player\Skins\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2172

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Windows Media Player\Skins\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2528

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 14 /tr "'C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\taskhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2928

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2888

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 12 /tr "'C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2104

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

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\blockProviderreviewwin\4Qgcue5Dj.vbe

Filesize
214B

MD5
f2ec303cdbe64b3590ced50784d1c467

SHA1
0c1f4f24916f2c0da0d62e5a44ab5ab43f223db6

SHA256
292b3ef1293df2d68408b56d38effb8cca9eac785f712a3f5644e093b4829513

SHA512
827509437fd6d0c5810862ef6fac547d52fa6aa6a765ee9d02d11ffb3e8233d5b6e824c70b436731eda6c566dfad6f3c404cc0f43c7cad07614545255077d624

Download Submit
C:\blockProviderreviewwin\9wAH2eg9ZDmdczf.bat

Filesize
49B

MD5
0b3eb634d6f6debee46880897366a475

SHA1
16922ddfb8e7bf97fbd4f8750ced6c9c8b193bd6

SHA256
da578fc2bc197e72ec660cc06edc6638d8eb9a7e8571a0e4cb43eca9465a04ae

SHA512
95c61b28c796ccc4720e4603ece203681b288cca0527e3d246741baf94492970910c3592c7867c6397d003b5ba056532a9b4df06e47ba36f3c384f1abb9db68d

Download Submit
C:\blockProviderreviewwin\file.vbs

Filesize
34B

MD5
677cc4360477c72cb0ce00406a949c61

SHA1
b679e8c3427f6c5fc47c8ac46cd0e56c9424de05

SHA256
f1cccb5ae4aa51d293bd3c7d2a1a04cb7847d22c5db8e05ac64e9a6d7455aa0b

SHA512
7cfe2cc92f9e659f0a15a295624d611b3363bd01eb5bcf9bc7681ea9b70b0564d192d570d294657c8dc2c93497fa3b4526c975a9bf35d69617c31d9936573c6a

Download Submit
C:\blockProviderreviewwin\providerDllcommon.exe

Filesize
2.3MB

MD5
0a01395b434c2d2af59f90aaceb1c11c

SHA1
60ed7515bc12b7537ac99578d663ec57069aec82

SHA256
570e798f1a2acc51e1f6d613e025ab35dc488377c6c4a3f7ef4de1f16bc0f808

SHA512
dfaa0e66e5cd0550adc7a30464f9124799d7c5d50815836ca441e2bc54c362816d251a362bf142dd8604924c408ab838b2ac8c3bfcac75e385848b30399dffa9

Download Submit
memory/2812-20-0x0000000000450000-0x0000000000466000-memory.dmp

Filesize
88KB

Download
memory/2812-19-0x00000000003A0000-0x00000000003BC000-memory.dmp

Filesize
112KB

Download
memory/2812-18-0x0000000000F40000-0x0000000001192000-memory.dmp

Filesize
2.3MB

Download
memory/2812-21-0x0000000000610000-0x0000000000666000-memory.dmp

Filesize
344KB

Download
memory/2812-22-0x0000000000190000-0x00000000001A2000-memory.dmp

Filesize
72KB

Download
memory/2812-23-0x00000000003C0000-0x00000000003CE000-memory.dmp

Filesize
56KB

Download
memory/2812-24-0x0000000000660000-0x0000000000668000-memory.dmp

Filesize
32KB

Download
memory/2812-25-0x0000000000670000-0x0000000000678000-memory.dmp

Filesize
32KB

Download
memory/2932-40-0x0000000000980000-0x0000000000BD2000-memory.dmp

Filesize
2.3MB

Download
memory/2932-41-0x00000000020E0000-0x0000000002136000-memory.dmp

Filesize
344KB

Download
memory/2932-42-0x00000000003C0000-0x00000000003D2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads