dcrat | 66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311

General

Target

66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
Size

1.2MB
MD5

bef8285cfd7940f27ae2cd23329bc3b0
SHA1

25550fa2bd7e20689f695c2dedf44b91a78136e5
SHA256

66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311
SHA512

71bfec2fee44137dd9eba41c922aa39e9f99ab0f46a1a40cfd15a73545f7e7b38ba38b19957ed3ddb07e9781691df88e79dc28a76b757c657a836715243698d8
SSDEEP

24576:5XPG6SZOZ2WlG4n8ndcEaNghwoW6s0NYgUuYjdkUl8:5XPGs2OGzntaUwoW6XNpUfO

Score

10^/10

dcrat infostealer persistence rat spyware stealer

Malware Config

Signatures

DcRat 11 IoCs

DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

rat infostealer dcrat

description	ioc	pid	Process
		2040	schtasks.exe
File created	C:\Windows\L2Schemas\dllhost.exe		66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
		2712	schtasks.exe
		2220	schtasks.exe
		2460	schtasks.exe
		2292	schtasks.exe
		2684	schtasks.exe
		2720	schtasks.exe
File created	C:\Windows\L2Schemas\5940a34987c991		66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
		2808	schtasks.exe
		2664	schtasks.exe

Modifies WinLogon for persistence 2 TTPs 3 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\L2Schemas\\dllhost.exe\""	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\L2Schemas\\dllhost.exe\", \"C:\\Windows\\Fonts\\smss.exe\""	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Windows\\L2Schemas\\dllhost.exe\", \"C:\\Windows\\Fonts\\smss.exe\", \"C:\\Program Files (x86)\\Common Files\\DESIGNER\\csrss.exe\""	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe

Process spawned unexpected child process 9 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	2664	3024	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2684	3024	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2040	3024	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2720	3024	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2808	3024	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2292	3024	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2712	3024	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2220	3024	schtasks.exe	28
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2460	3024	schtasks.exe	28

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/856-1-0x0000000000380000-0x00000000004BE000-memory.dmp	dcrat
behavioral1/files/0x00070000000149ea-13.dat	dcrat
behavioral1/memory/2532-19-0x00000000000E0000-0x000000000021E000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
2532	smss.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
T1552.001

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Windows\\L2Schemas\\dllhost.exe\""	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\Windows\\Fonts\\smss.exe\""	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\Windows\\Fonts\\smss.exe\""	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Program Files (x86)\\Common Files\\DESIGNER\\csrss.exe\""	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Program Files (x86)\\Common Files\\DESIGNER\\csrss.exe\""	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Windows\\L2Schemas\\dllhost.exe\""	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\DESIGNER\csrss.exe	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
File created	C:\Program Files (x86)\Common Files\DESIGNER\886983d96e3d3e	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\Fonts\69ddcba757bf72	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
File created	C:\Windows\L2Schemas\dllhost.exe	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
File opened for modification	C:\Windows\L2Schemas\dllhost.exe	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
File created	C:\Windows\L2Schemas\5940a34987c991	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
File created	C:\Windows\Fonts\smss.exe	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.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 9 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2040	schtasks.exe
2720	schtasks.exe
2808	schtasks.exe
2292	schtasks.exe
2712	schtasks.exe
2220	schtasks.exe
2460	schtasks.exe
2664	schtasks.exe
2684	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
856	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
856	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
856	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe
2532	smss.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2532	smss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	856	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
Token: SeDebugPrivilege	2532	smss.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 2532	856	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe	38
PID 856 wrote to memory of 2532	856	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe	38
PID 856 wrote to memory of 2532	856	66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe	38

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\66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311_NeikiAnalytics.exe"
1⤵
- DcRat
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:856
- C:\Windows\Fonts\smss.exe
  "C:\Windows\Fonts\smss.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:2532

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Windows\L2Schemas\dllhost.exe'" /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2664

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\L2Schemas\dllhost.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2684

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\Windows\L2Schemas\dllhost.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2040

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 13 /tr "'C:\Windows\Fonts\smss.exe'" /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2720

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\Fonts\smss.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2808

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\Windows\Fonts\smss.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2292

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Common Files\DESIGNER\csrss.exe'" /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2712

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\DESIGNER\csrss.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2220

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Common Files\DESIGNER\csrss.exe'" /rl HIGHEST /f
1⤵
- DcRat
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

2

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Fonts\smss.exe

Filesize
1.2MB

MD5
bef8285cfd7940f27ae2cd23329bc3b0

SHA1
25550fa2bd7e20689f695c2dedf44b91a78136e5

SHA256
66adff449794719027ce154809c64d1e6d2850a0cefd527ba959fdc1e2156311

SHA512
71bfec2fee44137dd9eba41c922aa39e9f99ab0f46a1a40cfd15a73545f7e7b38ba38b19957ed3ddb07e9781691df88e79dc28a76b757c657a836715243698d8

Download Submit
memory/856-0-0x000007FEF5A13000-0x000007FEF5A14000-memory.dmp

Filesize
4KB

Download
memory/856-1-0x0000000000380000-0x00000000004BE000-memory.dmp

Filesize
1.2MB

Download
memory/856-2-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/856-3-0x00000000002C0000-0x00000000002DC000-memory.dmp

Filesize
112KB

Download
memory/856-4-0x00000000005C0000-0x00000000005D6000-memory.dmp

Filesize
88KB

Download
memory/856-5-0x00000000002E0000-0x00000000002F2000-memory.dmp

Filesize
72KB

Download
memory/856-18-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/2532-19-0x00000000000E0000-0x000000000021E000-memory.dmp

Filesize
1.2MB

Download
memory/2532-20-0x0000000000480000-0x0000000000492000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads