dcrat | 67a88132279e0e1d1febaa02fca35e77766d0adf1fefacda3c922174428a2f70

Analysis

max time kernel
94s
max time network
147s
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 19:40

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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
3504	powershell.exe
1264	powershell.exe
628	powershell.exe
1368	powershell.exe
4036	powershell.exe
1972	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	Medal.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	iagj6m.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
2184	Medal.exe
3932	WmiPrvSE.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\CSC943BD74134644E568FBB1BC25827C1E.TMP	csc.exe
File created	\??\c:\Windows\System32\ljh0xx.exe	csc.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\24dbde2999530e	Medal.exe
File created	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\WmiPrvSE.exe	Medal.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\DiagTrack\Scenarios\RuntimeBroker.exe	Medal.exe
File created	C:\Windows\DiagTrack\Scenarios\9e8d7a4ca61bd9	Medal.exe
File created	C:\Windows\PolicyDefinitions\unsecapp.exe	Medal.exe
File created	C:\Windows\PolicyDefinitions\29c1c3cc0f7685	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

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000_Classes\Local Settings	iagj6m.exe
Key created	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000_Classes\Local Settings	Medal.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
2184	Medal.exe
1264	powershell.exe
628	powershell.exe
1368	powershell.exe
1972	powershell.exe
1972	powershell.exe
3504	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	Medal.exe
Token: SeDebugPrivilege	1368	powershell.exe
Token: SeDebugPrivilege	1264	powershell.exe
Token: SeDebugPrivilege	628	powershell.exe
Token: SeDebugPrivilege	1972	powershell.exe
Token: SeDebugPrivilege	3504	powershell.exe
Token: SeDebugPrivilege	4036	powershell.exe
Token: SeDebugPrivilege	3932	WmiPrvSE.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 692 wrote to memory of 3728	692	iagj6m.exe	82
PID 692 wrote to memory of 3728	692	iagj6m.exe	82
PID 692 wrote to memory of 3728	692	iagj6m.exe	82
PID 3728 wrote to memory of 3108	3728	WScript.exe	87
PID 3728 wrote to memory of 3108	3728	WScript.exe	87
PID 3728 wrote to memory of 3108	3728	WScript.exe	87
PID 3108 wrote to memory of 2184	3108	cmd.exe	89
PID 3108 wrote to memory of 2184	3108	cmd.exe	89
PID 2184 wrote to memory of 1604	2184	Medal.exe	90
PID 2184 wrote to memory of 1604	2184	Medal.exe	90
PID 1604 wrote to memory of 5016	1604	csc.exe	92
PID 1604 wrote to memory of 5016	1604	csc.exe	92
PID 2184 wrote to memory of 4036	2184	Medal.exe	93
PID 2184 wrote to memory of 4036	2184	Medal.exe	93
PID 2184 wrote to memory of 1972	2184	Medal.exe	94
PID 2184 wrote to memory of 1972	2184	Medal.exe	94
PID 2184 wrote to memory of 3504	2184	Medal.exe	95
PID 2184 wrote to memory of 3504	2184	Medal.exe	95
PID 2184 wrote to memory of 1264	2184	Medal.exe	96
PID 2184 wrote to memory of 1264	2184	Medal.exe	96
PID 2184 wrote to memory of 628	2184	Medal.exe	97
PID 2184 wrote to memory of 628	2184	Medal.exe	97
PID 2184 wrote to memory of 1368	2184	Medal.exe	98
PID 2184 wrote to memory of 1368	2184	Medal.exe	98
PID 2184 wrote to memory of 3600	2184	Medal.exe	106
PID 2184 wrote to memory of 3600	2184	Medal.exe	106
PID 3600 wrote to memory of 4596	3600	cmd.exe	108
PID 3600 wrote to memory of 4596	3600	cmd.exe	108
PID 3600 wrote to memory of 4424	3600	cmd.exe	109
PID 3600 wrote to memory of 4424	3600	cmd.exe	109
PID 3600 wrote to memory of 3932	3600	cmd.exe	112
PID 3600 wrote to memory of 3932	3600	cmd.exe	112

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:692
- 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:3728
- - 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:3108
  - - C:\Medal\Medal.exe
      "C:\Medal/Medal.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:2184
    - - 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\0hrk5m3x\0hrk5m3x.cmdline"
        5⤵
        Drops file in System32 directory
        Suspicious use of WriteProcessMemory
        
        PID:1604
      - 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\RES9A8A.tmp" "c:\Windows\System32\CSC943BD74134644E568FBB1BC25827C1E.TMP"
        6⤵
        
        PID:5016
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\PolicyDefinitions\unsecapp.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious use of AdjustPrivilegeToken
        
        PID:4036
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\WmiPrvSE.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1972
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\DiagTrack\Scenarios\RuntimeBroker.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3504
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Medal\StartMenuExperienceHost.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1264
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\Music\TextInputHost.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:628
    - - 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:1368
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\IAlTBWiBd6.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3600
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:4596
      - C:\Windows\system32\w32tm.exe
        
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        6⤵
        
        PID:4424
      - C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\WmiPrvSE.exe
        
        "C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\WmiPrvSE.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:3932

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

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
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
944B

MD5
3a6bad9528f8e23fb5c77fbd81fa28e8

SHA1
f127317c3bc6407f536c0f0600dcbcf1aabfba36

SHA256
986366767de5873f1b170a63f2a33ce05132d1afd90c8f5017afbca8ef1beb05

SHA512
846002154a0ece6f3e9feda6f115d3161dc21b3789525dd62ae1d9188495171293efdbe7be4710666dd8a15e66b557315b5a02918a741ed1d5f3ff0c515b98e2

Download Submit
C:\Users\Admin\AppData\Local\Temp\IAlTBWiBd6.bat

Filesize
246B

MD5
c749224785013a7a5203d2d4cd42287b

SHA1
5a1bdc9dc468b5a1d4a99d0b0fcad5ba84c07ae3

SHA256
827077eb59fb21fa9a45f57c1bdb538047068b421bf05b2f28706820c9bdbb67

SHA512
77aa44a321e8d3d97d58ec00eb8fe66d09711dff83eefaf036c7499aeb6b7fd8235a8db06ffb73baf10a0567aca6fd624903811a49987a96087914b8944ca144

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES9A8A.tmp

Filesize
1KB

MD5
0a8e13133ca3005ab0e0f0a31789ea6c

SHA1
4bfa34246c2668d3970cca9e666fe789283e6edf

SHA256
98c4fa8851dfb190885a468b9d6e8f676ae0263370535b8c7c22ec8f238146b0

SHA512
22343a438b5c7b95031a2c766c77e5fb30e59d432d6bfeede2cac8f50d27eaad1c80040cf0f954efbc4194535008157ecc4884521a183798212d0028034ad413

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h5zbzknw.amx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\0hrk5m3x\0hrk5m3x.0.cs

Filesize
373B

MD5
f7ad77493df957fe6adfe3baa42fe17d

SHA1
8b1f396134cb97b8407215b38dc0fabcdf07b36b

SHA256
ddccb8cebaa21e9e0848afb4e32ff679308ab6aa4ac25c7b40c2943718f3d1db

SHA512
a8f071274d7b182fc3e2631dff3486058218dcbe50aec0dddd475701b72dde0261aa1a09160f8a6fdf8a411ed2d433156492ca370164cb700d7f8b5d99477234

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\0hrk5m3x\0hrk5m3x.cmdline

Filesize
235B

MD5
be0013158b0e1823aae655a51e123281

SHA1
e7a81e9efe4f166ddd3890e0cefcf75bad449d6d

SHA256
7ddb45f8927e30c74e35b39d6b96561b5e078124cce31fc260781224866f7474

SHA512
ab8b46de2b58518b4645970d2b5869d9269e8c695e0f81291ad65f64f952f78b945791066e2b0653df0c21f1dd786c2d956abfe24578423cf2a3038995390be5

Download Submit
\??\c:\Windows\System32\CSC943BD74134644E568FBB1BC25827C1E.TMP

Filesize
1KB

MD5
2fd2b90e7053b01e6af25701a467eb1f

SHA1
68801a13cebba82c24f67a9d7c886fcefcf01a51

SHA256
12b900db56a20f01f0f1d65f46933971415d5b5675e59e8b02b3dae12aaa1527

SHA512
081d3a621e3664709867f3fdd82808364978f896fb007c0c8e6c8dfe25f2f2b8d37c9e0b2e4fb51c90bc6f691507b569e5d841ef3ca3bd38bd6adda2d30f32af

Download Submit
memory/1368-56-0x000001E32EEC0000-0x000001E32EEE2000-memory.dmp

Filesize
136KB

Download
memory/2184-22-0x0000000002DA0000-0x0000000002DAC000-memory.dmp

Filesize
48KB

Download
memory/2184-20-0x000000001B820000-0x000000001B838000-memory.dmp

Filesize
96KB

Download
memory/2184-18-0x000000001BCE0000-0x000000001BD30000-memory.dmp

Filesize
320KB

Download
memory/2184-17-0x0000000002ED0000-0x0000000002EEC000-memory.dmp

Filesize
112KB

Download
memory/2184-15-0x00000000014A0000-0x00000000014AE000-memory.dmp

Filesize
56KB

Download
memory/2184-13-0x0000000000AF0000-0x0000000000CCA000-memory.dmp

Filesize
1.9MB

Download
memory/2184-12-0x00007FFD556A3000-0x00007FFD556A5000-memory.dmp

Filesize
8KB

Download