dcrat | 30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c

General

Target

30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
Size

3.3MB
MD5

ca1c3f84e0259d9c423e34e20840f142
SHA1

3efc257f5027a1a1a205adcdbcb999e1ef8b3b7d
SHA256

30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c
SHA512

8cf6d715fbcad8eff71f4102479ed189a8e71438613225ae26c4e40dd696152a9d2efec028d602b8e25902aeea25961541749029d30a6f5fce5fd36d997fd5e1
SSDEEP

98304:0LMvB0KtBC+ZiFJCY4zsqyv7TUws7LRh1Bk308m3/T:0gvOK9MF5qy/UZdz8Q/T

Score

10^/10

dcrat evasion infostealer rat trojan

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	1992	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2800	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3012	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2664	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2204	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2188	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2556	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2812	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	836	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2560	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2652	2380	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2212	2380	schtasks.exe	31

UAC bypass 3 TTPs 6 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	System.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	System.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	System.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2404-1-0x00000000012F0000-0x000000000164C000-memory.dmp	dcrat
behavioral1/files/0x000f000000012782-27.dat	dcrat
behavioral1/memory/1640-28-0x0000000000A00000-0x0000000000D5C000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
1640	System.exe

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	System.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	System.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Internet Explorer\it-IT\spoolsv.exe	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
File created	C:\Program Files (x86)\Internet Explorer\it-IT\f3b6ecef712a24	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
File created	C:\Program Files\VideoLAN\VLC\spoolsv.exe	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
File created	C:\Program Files\VideoLAN\VLC\f3b6ecef712a24	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe

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

System Information Discovery
T1082

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
2212	schtasks.exe
2800	schtasks.exe
2204	schtasks.exe
2188	schtasks.exe
2812	schtasks.exe
836	schtasks.exe
2560	schtasks.exe
1992	schtasks.exe
3012	schtasks.exe
2664	schtasks.exe
2556	schtasks.exe
2652	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2404	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
2404	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
2404	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
1640	System.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2404	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
Token: SeDebugPrivilege	1640	System.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 1684	2404	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe	44
PID 2404 wrote to memory of 1684	2404	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe	44
PID 2404 wrote to memory of 1684	2404	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe	44
PID 1684 wrote to memory of 2724	1684	cmd.exe	46
PID 1684 wrote to memory of 2724	1684	cmd.exe	46
PID 1684 wrote to memory of 2724	1684	cmd.exe	46
PID 1684 wrote to memory of 1640	1684	cmd.exe	47
PID 1684 wrote to memory of 1640	1684	cmd.exe	47
PID 1684 wrote to memory of 1640	1684	cmd.exe	47

System policy modification 1 TTPs 6 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	System.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	System.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	System.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\30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe
"C:\Users\Admin\AppData\Local\Temp\30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2404
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\nmtkPgbBRV.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1684
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2724
- - C:\Users\Admin\NetHood\System.exe
    "C:\Users\Admin\NetHood\System.exe"
    3⤵
    - UAC bypass
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - System policy modification
    PID:1640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\NetHood\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1992

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Users\Admin\NetHood\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2800

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\NetHood\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3012

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Internet Explorer\it-IT\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2664

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\it-IT\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2204

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Internet Explorer\it-IT\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2188

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Users\Default User\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2556

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Default User\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2812

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Users\Default User\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:836

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Program Files\VideoLAN\VLC\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2560

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files\VideoLAN\VLC\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 14 /tr "'C:\Program Files\VideoLAN\VLC\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2212

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

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nmtkPgbBRV.bat

Filesize
198B

MD5
1c93ee01eb108b09b35b2f15e7a7bb4f

SHA1
c7c705432d553f964e09a05694244d425b06c4aa

SHA256
c24b67ba13e0422658cd60d0477eebe19bec0979128a3f147188a8b66eaf795c

SHA512
18a7c2060949a2c77510419409b476e191299139f438fb581b85b2117f4623934b0216bbec833cc2f91d718cea079053d258d4b17c3ae4db857f91e8520c1dd0

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Network Shortcuts\System.exe

Filesize
3.3MB

MD5
ca1c3f84e0259d9c423e34e20840f142

SHA1
3efc257f5027a1a1a205adcdbcb999e1ef8b3b7d

SHA256
30d404945af42d77bfd6ac92739486e8d00496a977ba6a6f0240cd20b7989f2c

SHA512
8cf6d715fbcad8eff71f4102479ed189a8e71438613225ae26c4e40dd696152a9d2efec028d602b8e25902aeea25961541749029d30a6f5fce5fd36d997fd5e1

Download Submit
memory/1640-31-0x00000000024A0000-0x00000000024F6000-memory.dmp

Filesize
344KB

Download
memory/1640-30-0x00000000005C0000-0x00000000005D2000-memory.dmp

Filesize
72KB

Download
memory/1640-29-0x00000000007E0000-0x0000000000836000-memory.dmp

Filesize
344KB

Download
memory/1640-28-0x0000000000A00000-0x0000000000D5C000-memory.dmp

Filesize
3.4MB

Download
memory/2404-8-0x0000000000A60000-0x0000000000A6C000-memory.dmp

Filesize
48KB

Download
memory/2404-7-0x0000000001240000-0x0000000001296000-memory.dmp

Filesize
344KB

Download
memory/2404-0-0x000007FEF56A3000-0x000007FEF56A4000-memory.dmp

Filesize
4KB

Download
memory/2404-9-0x0000000000A70000-0x0000000000A82000-memory.dmp

Filesize
72KB

Download
memory/2404-10-0x0000000000B20000-0x0000000000B2E000-memory.dmp

Filesize
56KB

Download
memory/2404-11-0x0000000000C90000-0x0000000000C9C000-memory.dmp

Filesize
48KB

Download
memory/2404-24-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/2404-6-0x0000000000A50000-0x0000000000A5A000-memory.dmp

Filesize
40KB

Download
memory/2404-5-0x00000000006F0000-0x00000000006F8000-memory.dmp

Filesize
32KB

Download
memory/2404-4-0x00000000004E0000-0x00000000004FC000-memory.dmp

Filesize
112KB

Download
memory/2404-3-0x00000000004D0000-0x00000000004DE000-memory.dmp

Filesize
56KB

Download
memory/2404-2-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/2404-1-0x00000000012F0000-0x000000000164C000-memory.dmp

Filesize
3.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads