dcrat | cc8ffd463272f8abfb56f7f6c7a83ade8137e8df4c8cf39926469bf54efd1f71

General

Target

3a92479aa98e55499bfa33bc2ea35b64.exe
Size

1.9MB
MD5

3a92479aa98e55499bfa33bc2ea35b64
SHA1

2645ee34fe180b3c775fec79729f5ecee1dab95f
SHA256

cc8ffd463272f8abfb56f7f6c7a83ade8137e8df4c8cf39926469bf54efd1f71
SHA512

137fe77d848b628a212e52fb9c8bac86c42914b51a2914f60676c3799e3c346a03c9122a54ed899888dbc58a59990f9cbd381212e08cfb82d071a577892d8d48
SSDEEP

24576:2TbBv5rUyXV/SgxSKCk+FpaARF5+dKz8It1s4o4NIbDc405+iPP+x2PMZ5S6re:IBJ/CFK3INhNIbDcykP+yiSf

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

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

Processes:

3a92479aa98e55499bfa33bc2ea35b64.exeWScript.exefontReviewsavesinto.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	3a92479aa98e55499bfa33bc2ea35b64.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	fontReviewsavesinto.exe

Executes dropped EXE 2 IoCs

Processes:

fontReviewsavesinto.execsrss.exe

pid	Process
532	fontReviewsavesinto.exe
1764	csrss.exe

Drops file in Program Files directory 6 IoCs

Processes:

fontReviewsavesinto.exe

description	ioc	Process
File created	C:\Program Files\Windows Media Player\ja-JP\csrss.exe	fontReviewsavesinto.exe
File opened for modification	C:\Program Files\Windows Media Player\ja-JP\csrss.exe	fontReviewsavesinto.exe
File created	C:\Program Files\Windows Media Player\ja-JP\886983d96e3d3e	fontReviewsavesinto.exe
File created	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_neutral_split.scale-200_8wekyb3d8bbwe\microsoft.system.package.metadata\sppsvc.exe	fontReviewsavesinto.exe
File created	C:\Program Files\Windows Portable Devices\SearchApp.exe	fontReviewsavesinto.exe
File created	C:\Program Files\Windows Portable Devices\38384e6a620884	fontReviewsavesinto.exe

Drops file in Windows directory 2 IoCs

Processes:

fontReviewsavesinto.exe

description	ioc	Process
File created	C:\Windows\Globalization\Sorting\explorer.exe	fontReviewsavesinto.exe
File created	C:\Windows\Globalization\Sorting\7a0fd90576e088	fontReviewsavesinto.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

Processes:

3a92479aa98e55499bfa33bc2ea35b64.exeWScript.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a92479aa98e55499bfa33bc2ea35b64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

Processes:

PING.EXE

pid	Process
1212	PING.EXE

Modifies registry class 2 IoCs

Processes:

fontReviewsavesinto.exe3a92479aa98e55499bfa33bc2ea35b64.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings	fontReviewsavesinto.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings	3a92479aa98e55499bfa33bc2ea35b64.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
1212	PING.EXE

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

fontReviewsavesinto.execsrss.exe

pid	Process
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
532	fontReviewsavesinto.exe
1764	csrss.exe
1764	csrss.exe
1764	csrss.exe
1764	csrss.exe
1764	csrss.exe
1764	csrss.exe
1764	csrss.exe
1764	csrss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

fontReviewsavesinto.execsrss.exe

description	pid	Process
Token: SeDebugPrivilege	532	fontReviewsavesinto.exe
Token: SeDebugPrivilege	1764	csrss.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

3a92479aa98e55499bfa33bc2ea35b64.exeWScript.execmd.exefontReviewsavesinto.execmd.exe

description	pid	Process	procid_target
PID 5096 wrote to memory of 5044	5096	3a92479aa98e55499bfa33bc2ea35b64.exe	84
PID 5096 wrote to memory of 5044	5096	3a92479aa98e55499bfa33bc2ea35b64.exe	84
PID 5096 wrote to memory of 5044	5096	3a92479aa98e55499bfa33bc2ea35b64.exe	84
PID 5044 wrote to memory of 4596	5044	WScript.exe	95
PID 5044 wrote to memory of 4596	5044	WScript.exe	95
PID 5044 wrote to memory of 4596	5044	WScript.exe	95
PID 4596 wrote to memory of 532	4596	cmd.exe	98
PID 4596 wrote to memory of 532	4596	cmd.exe	98
PID 532 wrote to memory of 4876	532	fontReviewsavesinto.exe	99
PID 532 wrote to memory of 4876	532	fontReviewsavesinto.exe	99
PID 4876 wrote to memory of 3584	4876	cmd.exe	101
PID 4876 wrote to memory of 3584	4876	cmd.exe	101
PID 4876 wrote to memory of 1212	4876	cmd.exe	102
PID 4876 wrote to memory of 1212	4876	cmd.exe	102
PID 4876 wrote to memory of 1764	4876	cmd.exe	103
PID 4876 wrote to memory of 1764	4876	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\3a92479aa98e55499bfa33bc2ea35b64.exe
"C:\Users\Admin\AppData\Local\Temp\3a92479aa98e55499bfa33bc2ea35b64.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5096
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\ComponentSavesinto\Rvb4MehGYPWwP7mOC7L2KZoGBB7qbkXbVDhXcse7w1B6.vbe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5044
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\ComponentSavesinto\ZNtisV5JM91TmuX3tDFXvJx7ah2q8kJOB5hVZXHXTCGj5p.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4596
  - - C:\ComponentSavesinto\fontReviewsavesinto.exe
      "C:\ComponentSavesinto/fontReviewsavesinto.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Drops file in Program Files directory
      Drops file in Windows directory
      Modifies registry class
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:532
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\p3khZ6T8xi.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4876
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:3584
      - C:\Windows\system32\PING.EXE
        
        ping -n 10 localhost
        6⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:1212
      - C:\Program Files\Windows Media Player\ja-JP\csrss.exe
        
        "C:\Program Files\Windows Media Player\ja-JP\csrss.exe"
        6⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ComponentSavesinto\Rvb4MehGYPWwP7mOC7L2KZoGBB7qbkXbVDhXcse7w1B6.vbe

Filesize
242B

MD5
3076c2a420abfae7929160ba4d0a72b7

SHA1
12b6bf6ab90923d5bdd316683b8eccd25b478904

SHA256
12790bc3e92339d3720214576ee78d7546292f985d5a06ee20c19aa6aea20344

SHA512
847910825012e426315c64fe5f949d63bcb3c60b51111c413198cc056e4ebc8475bf9c07b1cb021a82d8050b805606c1530a6431a8da5f5021b60e81dd56b37e

Download Submit
C:\ComponentSavesinto\ZNtisV5JM91TmuX3tDFXvJx7ah2q8kJOB5hVZXHXTCGj5p.bat

Filesize
87B

MD5
0f0c1382d77519a4e9b29d9aa39e786b

SHA1
e230967a14b0854d217ebdbbd571f7bae14ba176

SHA256
1bff5ed332b1fb57070372efa426bdb201534c2050cb16dd68c86e8595bf727a

SHA512
8435f2224ffe087669e382746587c4f583a15c1f0fa5939849882aecff136c1a55557171a6f17e3b66a0fc0d0067888de40ec02dcc70b86e35ee49c841cb2556

Download Submit
C:\ComponentSavesinto\fontReviewsavesinto.exe

Filesize
1.6MB

MD5
5b7391cd38f6218cd0e5c8f3899ab4dd

SHA1
c8fe062863454f2170cb5add5e38733311c48066

SHA256
4fa8244e62b244b9f543363577dbab6f4765809c4e4b09de4d42bd0b05384ff9

SHA512
a29e0820f2188af78133ba0ac8c1fa86a0f76038b222e15cbeb5167d1eb5f2a5e959d2ce5081fe694c458a204d1a222f92aea35d1049096807ccf25c68113d67

Download Submit
C:\Users\Admin\AppData\Local\Temp\p3khZ6T8xi.bat

Filesize
181B

MD5
18aa649cd618ddf195db16e9bcc467a2

SHA1
fac6f8ffa14d3b18b41f91bfb4da17dcbbd0df17

SHA256
b9358ec7e9664385f6a86030b278173ea13d79f2ffcd355fb0512cd0c47dfec3

SHA512
773e04b6f5930e691af06811fc8042128e55a269cea07e36d0289047c1cbb699df88c24baa590eb4cadd827dfc08662023e9f73660e1da56b26266047494c540

Download Submit
memory/532-12-0x00007FFF130A3000-0x00007FFF130A5000-memory.dmp

Filesize
8KB

Download
memory/532-13-0x0000000000390000-0x0000000000528000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads