dcrat | 67a88132279e0e1d1febaa02fca35e77766d0adf1fefacda3c922174428a2f70

Analysis

max time kernel
19s
max time network
20s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-12-2024 19:31

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General

Target

iagj6m.exe
Size

2.1MB
MD5

468eaabf32f5b160b19b6ccbd88fadae
SHA1

d8a2f93188429d790bd43f6dee836c96c287a57e
SHA256

67a88132279e0e1d1febaa02fca35e77766d0adf1fefacda3c922174428a2f70
SHA512

a7db93826a7193e7f4c890c180cb7a1cf71d12884b992cf29aa90faf3351c97f54797f5ecb52a91639219d707f8619c1d0ab04e663499ee6c4b281b2dd3780b6
SSDEEP

49152:IBJoehuClT3DpSX+KfJunl9CJ0ouJfK2CKaKWdIuqKs:yyehTLFFKonPJapIF

Score

10^/10

dcrat discovery execution 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

Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2772	powershell.exe
2864	powershell.exe
2664	powershell.exe
2548	powershell.exe
2636	powershell.exe
2812	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2168	Medal.exe
1800	conhost.exe

Loads dropped DLL 2 IoCs

pid	Process
2444	cmd.exe
2444	cmd.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\Windows\System32\CSCD0DF37EF7FC7420792D4F1666CB890BE.TMP	csc.exe
File created	\??\c:\Windows\System32\3kmwe8.exe	csc.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows NT\TableTextService\it-IT\088424020bedd6	Medal.exe
File created	C:\Program Files (x86)\Windows NT\TableTextService\it-IT\conhost.exe	Medal.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\it-IT\conhost.exe	Medal.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iagj6m.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

pid	Process
1976	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1976	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2168	Medal.exe
2548	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2168	Medal.exe
Token: SeDebugPrivilege	2548	powershell.exe
Token: SeDebugPrivilege	2864	powershell.exe
Token: SeDebugPrivilege	2772	powershell.exe
Token: SeDebugPrivilege	2636	powershell.exe
Token: SeDebugPrivilege	2664	powershell.exe
Token: SeDebugPrivilege	2812	powershell.exe
Token: SeDebugPrivilege	1800	conhost.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2572	2236	iagj6m.exe	30
PID 2236 wrote to memory of 2572	2236	iagj6m.exe	30
PID 2236 wrote to memory of 2572	2236	iagj6m.exe	30
PID 2236 wrote to memory of 2572	2236	iagj6m.exe	30
PID 2572 wrote to memory of 2444	2572	WScript.exe	32
PID 2572 wrote to memory of 2444	2572	WScript.exe	32
PID 2572 wrote to memory of 2444	2572	WScript.exe	32
PID 2572 wrote to memory of 2444	2572	WScript.exe	32
PID 2444 wrote to memory of 2168	2444	cmd.exe	34
PID 2444 wrote to memory of 2168	2444	cmd.exe	34
PID 2444 wrote to memory of 2168	2444	cmd.exe	34
PID 2444 wrote to memory of 2168	2444	cmd.exe	34
PID 2168 wrote to memory of 2820	2168	Medal.exe	35
PID 2168 wrote to memory of 2820	2168	Medal.exe	35
PID 2168 wrote to memory of 2820	2168	Medal.exe	35
PID 2820 wrote to memory of 2880	2820	csc.exe	37
PID 2820 wrote to memory of 2880	2820	csc.exe	37
PID 2820 wrote to memory of 2880	2820	csc.exe	37
PID 2168 wrote to memory of 2636	2168	Medal.exe	38
PID 2168 wrote to memory of 2636	2168	Medal.exe	38
PID 2168 wrote to memory of 2636	2168	Medal.exe	38
PID 2168 wrote to memory of 2548	2168	Medal.exe	39
PID 2168 wrote to memory of 2548	2168	Medal.exe	39
PID 2168 wrote to memory of 2548	2168	Medal.exe	39
PID 2168 wrote to memory of 2812	2168	Medal.exe	40
PID 2168 wrote to memory of 2812	2168	Medal.exe	40
PID 2168 wrote to memory of 2812	2168	Medal.exe	40
PID 2168 wrote to memory of 2772	2168	Medal.exe	41
PID 2168 wrote to memory of 2772	2168	Medal.exe	41
PID 2168 wrote to memory of 2772	2168	Medal.exe	41
PID 2168 wrote to memory of 2664	2168	Medal.exe	42
PID 2168 wrote to memory of 2664	2168	Medal.exe	42
PID 2168 wrote to memory of 2664	2168	Medal.exe	42
PID 2168 wrote to memory of 2864	2168	Medal.exe	44
PID 2168 wrote to memory of 2864	2168	Medal.exe	44
PID 2168 wrote to memory of 2864	2168	Medal.exe	44
PID 2168 wrote to memory of 1640	2168	Medal.exe	50
PID 2168 wrote to memory of 1640	2168	Medal.exe	50
PID 2168 wrote to memory of 1640	2168	Medal.exe	50
PID 1640 wrote to memory of 1360	1640	cmd.exe	52
PID 1640 wrote to memory of 1360	1640	cmd.exe	52
PID 1640 wrote to memory of 1360	1640	cmd.exe	52
PID 1640 wrote to memory of 1976	1640	cmd.exe	53
PID 1640 wrote to memory of 1976	1640	cmd.exe	53
PID 1640 wrote to memory of 1976	1640	cmd.exe	53
PID 1640 wrote to memory of 1800	1640	cmd.exe	54
PID 1640 wrote to memory of 1800	1640	cmd.exe	54
PID 1640 wrote to memory of 1800	1640	cmd.exe	54

C:\Users\Admin\AppData\Local\Temp\iagj6m.exe
"C:\Users\Admin\AppData\Local\Temp\iagj6m.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Medal\VILORd6SoVoEmyMpC3WEu.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2572
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Medal\xWGevBghcv54H0hXBv7583OlcwEyHK.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2444
  - - C:\Medal\Medal.exe
      "C:\Medal/Medal.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2168
    - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
        
        "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\rayyihlw\rayyihlw.cmdline"
        5⤵
        Drops file in System32 directory
        Suspicious use of WriteProcessMemory
        
        PID:2820
      - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESD2BA.tmp" "c:\Windows\System32\CSCD0DF37EF7FC7420792D4F1666CB890BE.TMP"
        6⤵
        
        PID:2880
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Public\Pictures\Sample Pictures\csrss.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious use of AdjustPrivilegeToken
        
        PID:2636
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\{90140000-00BA-0409-0000-0000000FF1CE}-C\audiodg.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2548
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\WmiPrvSE.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious use of AdjustPrivilegeToken
        
        PID:2812
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\taskhost.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious use of AdjustPrivilegeToken
        
        PID:2772
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows NT\TableTextService\it-IT\conhost.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious use of AdjustPrivilegeToken
        
        PID:2664
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Medal\Medal.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious use of AdjustPrivilegeToken
        
        PID:2864
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\gYSuYyanDc.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1640
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:1360
      - C:\Windows\system32\PING.EXE
        
        ping -n 10 localhost
        6⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:1976
      - C:\Program Files (x86)\Windows NT\TableTextService\it-IT\conhost.exe
        
        "C:\Program Files (x86)\Windows NT\TableTextService\it-IT\conhost.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Medal\Medal.exe

Filesize
1.8MB

MD5
e27a4488cb35703f406fcf3a038a86c4

SHA1
926513f3ccca7cc4a86f281670cc9be1fdd4c613

SHA256
2dfeb67e47b8cf7b46385dc64ff9f48d88ca15699d6615151b2ba668bccf251b

SHA512
9fb695f3300f1b0a0edbc5413181230cf0d5eefcd09310e12f3e7b8b969332ebcb639a3944e4496e7b55b9e929823edb86ff21d59f92ed72fa5de7717aba9793

Download Submit
C:\Medal\VILORd6SoVoEmyMpC3WEu.vbe

Filesize
213B

MD5
7469cc785296b1098b2d6816c0140169

SHA1
081467bcc09dc566bdff78cd199e35a13fd188fe

SHA256
52a3703c926b912943a2a5e9e66ffb080d985237c92fd8b0beea41f37c028e1f

SHA512
ac69e60cef79a1699d28bd7b29fda647d2a285ff06bcb5be7be339311707872eff4e3b897f7da719fb7174efa7b72e764df6e9a7ce61afab4893cfc76655428d

Download Submit
C:\Medal\xWGevBghcv54H0hXBv7583OlcwEyHK.bat

Filesize
65B

MD5
f6c7cc62995e59628450f6b7e52837a3

SHA1
613a43f04cbd78f1d64343d66d9c41c2cd5d9f1d

SHA256
e5425359b32df369118a828185f523bdb19aee3039bdfab47d576e9b0903c3c3

SHA512
5b07a22c6afc546b15b573100538c3fc4a4b748860a5e3e37b02e93d75ed5c1a6d2cfc275e144b22d4327505719ff4c6aa65abb483472d352fc99694eaa0a89b

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESD2BA.tmp

Filesize
1KB

MD5
94fe05f1c6504dc524ab4fbc987ad799

SHA1
75332610eb051eced5b663f8279450237afaea98

SHA256
d34868ec67cdaeeda10f7e37a85f8f90e317b5906d1c368644270abc9446e8a9

SHA512
0436b33e0f4a1ad84706f4ecc7a691486dacbe04d367590bf041baf9751bb6e11f34b57312e25cfde0afef9063244d96263ae601d0fe8fa626bc9f3fe100f4a2

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

Filesize
196B

MD5
ff91101f0201426a6e1ef1ce2277f57e

SHA1
43b27a43a38fd4b5cff30c3ef62fffb46bbe5c3a

SHA256
75136b8afe3005f903707f4450f90f9f76768120518cea07ad8c99e514df75ca

SHA512
bb3108913ce9239af1d92437adfa3894d974674a0a94d55bf26be27f6589b0f125fefac5227aeecab8f1f533640e14c4a6d29c0e35cb6bd771dbe1fb4b44abed

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
f9f3934810c2a2f6d5fc400fb53fb893

SHA1
d19f828c3778dd5c45970abfc00bae95b3b5f718

SHA256
73a3bde331c465c90ee25e8a9574db770cf2046d304f872c0b21a03152331bda

SHA512
a9e5b28c40373eb202128489ae1e0973896b6b36aafc5c2b8a0d6fe5543eecc2b918cde069cd115d1e3fbda01e39eb2345da1827c7d4b00ae5cbca70fb599b31

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\rayyihlw\rayyihlw.0.cs

Filesize
382B

MD5
38546a9f97ee88a8fc26f3afab9f98d7

SHA1
23281e32a8092cbabe7480460c7e1992c19c0007

SHA256
180b3760cd46569dc746e0477a0175f17ee00174c779ea27f7ad2dbf3ca056b5

SHA512
513055ca82c099dc7781f120a5d178f77f1839574058d44c1e6917b41ab4c072fdc0e6f6a232910920b0ecbee2fa2b0e1a4383d08af8cc451dbae00f53312d10

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\rayyihlw\rayyihlw.cmdline

Filesize
235B

MD5
22a8da1fe5e56c2a6de64a014d45fc64

SHA1
c484272e4c7e3514f8fb3604f3854c97e4588e2f

SHA256
1dcde761dc3a0a75b829efe4985352612adfd9b1a3f47af8c2027f8b8a497f21

SHA512
86978ba6c2d05ea0011f947b71cb26df01c587c5cea3e88e6df0d66aa6b61a74d881939fc978b552952ae079dd8fd35fe701afc72e8f4123cdc1e911e1a5c8e1

Download Submit
\??\c:\Windows\System32\CSCD0DF37EF7FC7420792D4F1666CB890BE.TMP

Filesize
1KB

MD5
8c85ef91c6071d33745325a8fa351c3e

SHA1
e3311ceef28823eec99699cc35be27c94eca52d2

SHA256
8db3e3a5515da1933036688a9b1918cfc3339fc687008c5325461271904b2d41

SHA512
2bb89b07fe46b1c406ed6a560e88cb2b8402b1d61bb71e10887bad661751f64f1e5317fd6c1b301ea4766785b915da31b64e0475cfe36c1f950b32915b5dab7d

Download Submit
memory/1800-83-0x00000000012D0000-0x00000000014AA000-memory.dmp

Filesize
1.9MB

Download
memory/2168-21-0x0000000000290000-0x000000000029C000-memory.dmp

Filesize
48KB

Download
memory/2168-19-0x0000000000450000-0x0000000000468000-memory.dmp

Filesize
96KB

Download
memory/2168-17-0x00000000002B0000-0x00000000002CC000-memory.dmp

Filesize
112KB

Download
memory/2168-15-0x0000000000280000-0x000000000028E000-memory.dmp

Filesize
56KB

Download
memory/2168-13-0x0000000000E70000-0x000000000104A000-memory.dmp

Filesize
1.9MB

Download
memory/2548-68-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2772-63-0x000000001B540000-0x000000001B822000-memory.dmp

Filesize
2.9MB

Download