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
Executes dropped EXE 2 IoCs

Processes:

fontReviewsavesinto.execsrss.exe

pid process

2768 fontReviewsavesinto.exe
1616 csrss.exe
Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid process

2904 cmd.exe
2904 cmd.exe

pid	process
2904	cmd.exe
2904	cmd.exe

Drops file in Program Files directory 2 IoCs

Processes:

fontReviewsavesinto.exe

description	ioc	process
File created	C:\Program Files (x86)\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\Images\smss.exe	fontReviewsavesinto.exe
File created	C:\Program Files (x86)\Windows Sidebar\Gadgets\PicturePuzzle.Gadget\Images\69ddcba757bf72	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

Suspicious behavior: EnumeratesProcesses 17 IoCs

Processes:

fontReviewsavesinto.execsrss.exe

pid	process
2768	fontReviewsavesinto.exe
2768	fontReviewsavesinto.exe
2768	fontReviewsavesinto.exe
2768	fontReviewsavesinto.exe
2768	fontReviewsavesinto.exe
2768	fontReviewsavesinto.exe
2768	fontReviewsavesinto.exe
2768	fontReviewsavesinto.exe
2768	fontReviewsavesinto.exe
1616	csrss.exe
1616	csrss.exe
1616	csrss.exe
1616	csrss.exe
1616	csrss.exe
1616	csrss.exe
1616	csrss.exe
1616	csrss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

fontReviewsavesinto.execsrss.exe

description pid process

Token: SeDebugPrivilege 2768 fontReviewsavesinto.exe
Token: SeDebugPrivilege 1616 csrss.exe

description	pid	process
Token: SeDebugPrivilege	2768	fontReviewsavesinto.exe
Token: SeDebugPrivilege	1616	csrss.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

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

description	pid	process	target process
PID 2772 wrote to memory of 2788	2772	3a92479aa98e55499bfa33bc2ea35b64.exe	WScript.exe
PID 2772 wrote to memory of 2788	2772	3a92479aa98e55499bfa33bc2ea35b64.exe	WScript.exe
PID 2772 wrote to memory of 2788	2772	3a92479aa98e55499bfa33bc2ea35b64.exe	WScript.exe
PID 2772 wrote to memory of 2788	2772	3a92479aa98e55499bfa33bc2ea35b64.exe	WScript.exe
PID 2788 wrote to memory of 2904	2788	WScript.exe	cmd.exe
PID 2788 wrote to memory of 2904	2788	WScript.exe	cmd.exe
PID 2788 wrote to memory of 2904	2788	WScript.exe	cmd.exe
PID 2788 wrote to memory of 2904	2788	WScript.exe	cmd.exe
PID 2904 wrote to memory of 2768	2904	cmd.exe	fontReviewsavesinto.exe
PID 2904 wrote to memory of 2768	2904	cmd.exe	fontReviewsavesinto.exe
PID 2904 wrote to memory of 2768	2904	cmd.exe	fontReviewsavesinto.exe
PID 2904 wrote to memory of 2768	2904	cmd.exe	fontReviewsavesinto.exe
PID 2768 wrote to memory of 2184	2768	fontReviewsavesinto.exe	cmd.exe
PID 2768 wrote to memory of 2184	2768	fontReviewsavesinto.exe	cmd.exe
PID 2768 wrote to memory of 2184	2768	fontReviewsavesinto.exe	cmd.exe
PID 2184 wrote to memory of 336	2184	cmd.exe	chcp.com
PID 2184 wrote to memory of 336	2184	cmd.exe	chcp.com
PID 2184 wrote to memory of 336	2184	cmd.exe	chcp.com
PID 2184 wrote to memory of 1180	2184	cmd.exe	w32tm.exe
PID 2184 wrote to memory of 1180	2184	cmd.exe	w32tm.exe
PID 2184 wrote to memory of 1180	2184	cmd.exe	w32tm.exe
PID 2184 wrote to memory of 1616	2184	cmd.exe	csrss.exe
PID 2184 wrote to memory of 1616	2184	cmd.exe	csrss.exe
PID 2184 wrote to memory of 1616	2184	cmd.exe	csrss.exe

C:\Users\Admin\AppData\Local\Temp\3a92479aa98e55499bfa33bc2ea35b64.exe
"C:\Users\Admin\AppData\Local\Temp\3a92479aa98e55499bfa33bc2ea35b64.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\ComponentSavesinto\Rvb4MehGYPWwP7mOC7L2KZoGBB7qbkXbVDhXcse7w1B6.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\ComponentSavesinto\ZNtisV5JM91TmuX3tDFXvJx7ah2q8kJOB5hVZXHXTCGj5p.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2904
  - - C:\ComponentSavesinto\fontReviewsavesinto.exe
      "C:\ComponentSavesinto/fontReviewsavesinto.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2768
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\W6bqrp3ns3.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2184
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:336
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:1180
      - C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\csrss.exe
        
        "C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\csrss.exe"
        6⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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:\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\W6bqrp3ns3.bat

Filesize
248B

MD5
c4c7c61044d3cdc1159dcb48f7580679

SHA1
5699961921cc0086b6fc99fb0d2e991c72e6b7db

SHA256
e567a87443f622d564acc199d2aff09b31ff8448689bf5a8978b113150a1daeb

SHA512
49e8f183f566442aab541add91755d0f5da77e25f567a5535c399ff76d392f7d29e629e9bdb858bc5ec17e909efb4f14cbe464f8e2bdcdaaa19ec64481e57809

Download Submit
memory/1616-32-0x0000000000F70000-0x0000000001108000-memory.dmp

Filesize
1.6MB

Download
memory/2768-13-0x0000000000910000-0x0000000000AA8000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads