dcrat | 67a88132279e0e1d1febaa02fca35e77766d0adf1fefacda3c922174428a2f70

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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 spyware stealer

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
3240	powershell.exe
3672	powershell.exe
1172	powershell.exe
3416	powershell.exe
3448	powershell.exe
3652	powershell.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	iagj6m.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	Medal.exe

Executes dropped EXE 2 IoCs

pid	Process
3768	Medal.exe
2444	taskhostw.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\Windows\System32\CSC7B2197ED72CE403BB55B977ABC84618.TMP	csc.exe
File created	\??\c:\Windows\System32\xqt5sk.exe	csc.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows Portable Devices\ea1d8f6d871115	Medal.exe
File created	C:\Program Files (x86)\Windows Multimedia Platform\SppExtComObj.exe	Medal.exe
File created	C:\Program Files (x86)\Windows Multimedia Platform\e1ef82546f0b02	Medal.exe
File created	C:\Program Files (x86)\Windows Portable Devices\upfc.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
2552	PING.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings	iagj6m.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings	Medal.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2552	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3768	Medal.exe
3240	powershell.exe
3652	powershell.exe
3448	powershell.exe
3416	powershell.exe
1172	powershell.exe
3672	powershell.exe
3652	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2444	taskhostw.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3768	Medal.exe
Token: SeDebugPrivilege	3240	powershell.exe
Token: SeDebugPrivilege	3652	powershell.exe
Token: SeDebugPrivilege	3448	powershell.exe
Token: SeDebugPrivilege	3416	powershell.exe
Token: SeDebugPrivilege	1172	powershell.exe
Token: SeDebugPrivilege	3672	powershell.exe
Token: SeDebugPrivilege	2444	taskhostw.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 3844 wrote to memory of 4108	3844	iagj6m.exe	83
PID 3844 wrote to memory of 4108	3844	iagj6m.exe	83
PID 3844 wrote to memory of 4108	3844	iagj6m.exe	83
PID 4108 wrote to memory of 1192	4108	WScript.exe	85
PID 4108 wrote to memory of 1192	4108	WScript.exe	85
PID 4108 wrote to memory of 1192	4108	WScript.exe	85
PID 1192 wrote to memory of 3768	1192	cmd.exe	87
PID 1192 wrote to memory of 3768	1192	cmd.exe	87
PID 3768 wrote to memory of 4160	3768	Medal.exe	88
PID 3768 wrote to memory of 4160	3768	Medal.exe	88
PID 4160 wrote to memory of 5072	4160	csc.exe	90
PID 4160 wrote to memory of 5072	4160	csc.exe	90
PID 3768 wrote to memory of 3672	3768	Medal.exe	91
PID 3768 wrote to memory of 3672	3768	Medal.exe	91
PID 3768 wrote to memory of 1172	3768	Medal.exe	92
PID 3768 wrote to memory of 1172	3768	Medal.exe	92
PID 3768 wrote to memory of 3416	3768	Medal.exe	93
PID 3768 wrote to memory of 3416	3768	Medal.exe	93
PID 3768 wrote to memory of 3448	3768	Medal.exe	94
PID 3768 wrote to memory of 3448	3768	Medal.exe	94
PID 3768 wrote to memory of 3652	3768	Medal.exe	95
PID 3768 wrote to memory of 3652	3768	Medal.exe	95
PID 3768 wrote to memory of 3240	3768	Medal.exe	96
PID 3768 wrote to memory of 3240	3768	Medal.exe	96
PID 3768 wrote to memory of 4220	3768	Medal.exe	103
PID 3768 wrote to memory of 4220	3768	Medal.exe	103
PID 4220 wrote to memory of 728	4220	cmd.exe	105
PID 4220 wrote to memory of 728	4220	cmd.exe	105
PID 4220 wrote to memory of 2552	4220	cmd.exe	106
PID 4220 wrote to memory of 2552	4220	cmd.exe	106
PID 4220 wrote to memory of 2444	4220	cmd.exe	120
PID 4220 wrote to memory of 2444	4220	cmd.exe	120

C:\Users\Admin\AppData\Local\Temp\iagj6m.exe
"C:\Users\Admin\AppData\Local\Temp\iagj6m.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3844
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Medal\VILORd6SoVoEmyMpC3WEu.vbe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4108
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Medal\xWGevBghcv54H0hXBv7583OlcwEyHK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1192
  - - C:\Medal\Medal.exe
      "C:\Medal/Medal.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Drops file in Program Files directory
      Modifies registry class
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3768
    - - 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\t3wwzxy5\t3wwzxy5.cmdline"
        5⤵
        Drops file in System32 directory
        Suspicious use of WriteProcessMemory
        
        PID:4160
      - 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\RESB19D.tmp" "c:\Windows\System32\CSC7B2197ED72CE403BB55B977ABC84618.TMP"
        6⤵
        
        PID:5072
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Multimedia Platform\SppExtComObj.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3672
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Portable Devices\upfc.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1172
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\OfficeClickToRun.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3416
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Medal\RuntimeBroker.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3448
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\taskhostw.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3652
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Medal\Medal.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3240
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\lDLPxOPRnV.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4220
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:728
      - C:\Windows\system32\PING.EXE
        
        ping -n 10 localhost
        6⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2552
      - C:\Recovery\WindowsRE\taskhostw.exe
        
        "C:\Recovery\WindowsRE\taskhostw.exe"
        6⤵
        Executes dropped EXE
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of AdjustPrivilegeToken
        
        PID:2444

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

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

Data from Local System

T1005

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\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESB19D.tmp

Filesize
1KB

MD5
c0496d15a7c110e3b7b7dac087e81d9d

SHA1
22332589e5d06b14dcfacc3b225d463e6af3b631

SHA256
461f6ab502c182fa36c80e7dc1efac2ef3a0eb0bb2f25af45ee6164c9f19005f

SHA512
e95b6dc9ee2f6d0113d32146c0ed141f84d17dd2b593c593d74229fcaec74d7fb98dfffd482e7b65a18d956f73fb96e8521cf2cc0eb8ac0eef009fa019f66525

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uqvnwrrd.5ky.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
163B

MD5
081f806839914c36927b7c8a962711be

SHA1
9b0c3dac2985e9f27c7b5301951915296b77b473

SHA256
24f00a5245c8e856da32c0dcbee70e1feb4ebb3c5704b5136a7808fa4b9d624c

SHA512
d12436c6c2914c3090ab5de5165cf416f83ae8381b3d9a1d7d3677a30477cd310c9f287a421824132bfda99c1f5e6537d28d263d5d3aa5bda44de65808fc5030

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\t3wwzxy5\t3wwzxy5.0.cs

Filesize
399B

MD5
1d7e9622e60fe19a0e725925878b0290

SHA1
fc95f5fc7c159d6f2cf51e50a3d5dec5771c40f1

SHA256
6c4d728cbf72e24ccedfe7543bbe1cd0ea6b820e8e72d62151100b5cb73c0bf0

SHA512
2871347285cbd1af676ab685e86e5d5cc169ffce7adc76fbdcdfcea304932c8afd91192567d756df5354e51ad4b31f276f40e9bfeb318649f9945fc3ea1ccdf6

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\t3wwzxy5\t3wwzxy5.cmdline

Filesize
235B

MD5
4b1f4ecbbe57827df649fb5ba4af7e3a

SHA1
687f856fc80b3f910c9aedd8fabb908561ca1e34

SHA256
8d8511d5abe83f5b62d337e4115eeb5f1bfa3fee1f03f4752efcbf7efbc083bf

SHA512
83b0d785cd0ad45ef79a7278748cb6a5b11353bff2335a037bc4ecf074d3a9ba54ffb51a5edb37852cdb382ea49ed75f91ef436bc41ad2ae800c8f0c20dba20c

Download Submit
\??\c:\Windows\System32\CSC7B2197ED72CE403BB55B977ABC84618.TMP

Filesize
1KB

MD5
ad61927912f86c7c9f1e72720f4ef0ef

SHA1
dbb61d9d5c7310c85716fe9f445fee2151cef437

SHA256
bf2696fc2183af293d74c988add5772c1c7257c2e85ae754e43cbe0e1d105a1e

SHA512
33b6f9f93672bd0ecb68e553de0ce92dd6b773c62da7721c9544171df7de8b8588e9ba42e13836db5d5ffc078ca656993f8d06a857dda5a27e1d639d5a6fb3ee

Download Submit
memory/2444-127-0x000000001C190000-0x000000001C1FB000-memory.dmp

Filesize
428KB

Download
memory/3240-66-0x000001B759100000-0x000001B759122000-memory.dmp

Filesize
136KB

Download
memory/3768-22-0x0000000002750000-0x000000000275C000-memory.dmp

Filesize
48KB

Download
memory/3768-20-0x0000000002800000-0x0000000002818000-memory.dmp

Filesize
96KB

Download
memory/3768-18-0x000000001B670000-0x000000001B6C0000-memory.dmp

Filesize
320KB

Download
memory/3768-17-0x00000000027E0000-0x00000000027FC000-memory.dmp

Filesize
112KB

Download
memory/3768-15-0x0000000002740000-0x000000000274E000-memory.dmp

Filesize
56KB

Download
memory/3768-13-0x00000000004A0000-0x000000000067A000-memory.dmp

Filesize
1.9MB

Download
memory/3768-12-0x00007FFECE403000-0x00007FFECE405000-memory.dmp

Filesize
8KB

Download