dcrat | 2dfeb67e47b8cf7b46385dc64ff9f48d88ca15699d6615151b2ba668bccf251b

Analysis

max time kernel
94s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-12-2024 16:28

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General

Target

Medal.exe
Size

1.8MB
MD5

e27a4488cb35703f406fcf3a038a86c4
SHA1

926513f3ccca7cc4a86f281670cc9be1fdd4c613
SHA256

2dfeb67e47b8cf7b46385dc64ff9f48d88ca15699d6615151b2ba668bccf251b
SHA512

9fb695f3300f1b0a0edbc5413181230cf0d5eefcd09310e12f3e7b8b969332ebcb639a3944e4496e7b55b9e929823edb86ff21d59f92ed72fa5de7717aba9793
SSDEEP

49152:nehuClT3DpSX+KfJunl9CJ0ouJfK2CKaKWdIuqK:nehTLFFKonPJapI

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
2364	powershell.exe
4956	powershell.exe
380	powershell.exe
5112	powershell.exe
3676	powershell.exe
2996	powershell.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	Medal.exe

Executes dropped EXE 1 IoCs

pid	Process
3396	TextInputHost.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\CSCA2C7278C34D441CA8B73B3253F129DC.TMP	csc.exe
File created	\??\c:\Windows\System32\ewkptm.exe	csc.exe

Drops file in Program Files directory 7 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Google\Temp\TextInputHost.exe	Medal.exe
File created	C:\Program Files (x86)\Google\Temp\22eafd247d37c3	Medal.exe
File created	C:\Program Files\Internet Explorer\es-ES\SearchApp.exe	Medal.exe
File opened for modification	C:\Program Files\Internet Explorer\es-ES\SearchApp.exe	Medal.exe
File created	C:\Program Files\Internet Explorer\es-ES\38384e6a620884	Medal.exe
File created	C:\Program Files\dotnet\shared\sysmon.exe	Medal.exe
File created	C:\Program Files\dotnet\shared\121e5b5079f7c0	Medal.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
2636	PING.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings	Medal.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2636	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
1060	Medal.exe
2364	powershell.exe
3676	powershell.exe
2996	powershell.exe
380	powershell.exe
5112	powershell.exe
4956	powershell.exe
3676	powershell.exe
2996	powershell.exe
2364	powershell.exe
5112	powershell.exe
4956	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1060	Medal.exe
Token: SeDebugPrivilege	2364	powershell.exe
Token: SeDebugPrivilege	3676	powershell.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeDebugPrivilege	380	powershell.exe
Token: SeDebugPrivilege	5112	powershell.exe
Token: SeDebugPrivilege	4956	powershell.exe
Token: SeDebugPrivilege	3396	TextInputHost.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1060 wrote to memory of 3120	1060	Medal.exe	83
PID 1060 wrote to memory of 3120	1060	Medal.exe	83
PID 3120 wrote to memory of 4700	3120	csc.exe	85
PID 3120 wrote to memory of 4700	3120	csc.exe	85
PID 1060 wrote to memory of 2364	1060	Medal.exe	86
PID 1060 wrote to memory of 2364	1060	Medal.exe	86
PID 1060 wrote to memory of 2996	1060	Medal.exe	87
PID 1060 wrote to memory of 2996	1060	Medal.exe	87
PID 1060 wrote to memory of 4956	1060	Medal.exe	88
PID 1060 wrote to memory of 4956	1060	Medal.exe	88
PID 1060 wrote to memory of 3676	1060	Medal.exe	89
PID 1060 wrote to memory of 3676	1060	Medal.exe	89
PID 1060 wrote to memory of 5112	1060	Medal.exe	90
PID 1060 wrote to memory of 5112	1060	Medal.exe	90
PID 1060 wrote to memory of 380	1060	Medal.exe	91
PID 1060 wrote to memory of 380	1060	Medal.exe	91
PID 1060 wrote to memory of 3572	1060	Medal.exe	98
PID 1060 wrote to memory of 3572	1060	Medal.exe	98
PID 3572 wrote to memory of 4204	3572	cmd.exe	100
PID 3572 wrote to memory of 4204	3572	cmd.exe	100
PID 3572 wrote to memory of 2636	3572	cmd.exe	101
PID 3572 wrote to memory of 2636	3572	cmd.exe	101
PID 3572 wrote to memory of 3396	3572	cmd.exe	108
PID 3572 wrote to memory of 3396	3572	cmd.exe	108

C:\Users\Admin\AppData\Local\Temp\Medal.exe
"C:\Users\Admin\AppData\Local\Temp\Medal.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1060
- 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\qcbo2j0l\qcbo2j0l.cmdline"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3120
- - 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\RESBCA9.tmp" "c:\Windows\System32\CSCA2C7278C34D441CA8B73B3253F129DC.TMP"
    3⤵
    PID:4700
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Default User\RuntimeBroker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2364
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Google\Temp\TextInputHost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2996
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Public\TextInputHost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4956
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\dotnet\shared\sysmon.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3676
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Internet Explorer\es-ES\SearchApp.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5112
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Medal.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:380
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\u5ZafbEJi7.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3572
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:4204
- - C:\Windows\system32\PING.EXE
    ping -n 10 localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2636
- - C:\Users\Public\TextInputHost.exe
    "C:\Users\Public\TextInputHost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3396

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 Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESBCA9.tmp

Filesize
1KB

MD5
6bd5d5b7deb968feb9775e799b80ec18

SHA1
08e3c1aa1f1b01dd692f14bfb5272a4b4b2f2dc2

SHA256
bc7f5902a93f45d2933b3314986ed957fc76437dd05f685bd7349ad9be8746a6

SHA512
26a9beac49ec02c4614fc966e8401e6716d830d76ce051d3a0cbfdd21ea6ff441797a7caf5144fbee4cf28f04c16d95f0a0c1ab9571148dab32fddd81b17e81f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_niotjntn.eiu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\u5ZafbEJi7.bat

Filesize
161B

MD5
7dae01261acc1dc1028875cf45ab9955

SHA1
0ea90f68fab7fb634af28887ef8cdd93c58b533a

SHA256
d75e4daedee0eafa0772bb3448886b5fba9d47e2337c5530e01785f9c1d4331f

SHA512
d38897fb6fdfdb50d2e2bd148bf9c8deb7886bf84760cd5990d14691d50513477ab4b12517541ef11bac907ee07ad7d27ea347b3700eeb5e0e17661b4c0d7aa0

Download Submit
C:\Users\Default\RuntimeBroker.exe

Filesize
1.8MB

MD5
e27a4488cb35703f406fcf3a038a86c4

SHA1
926513f3ccca7cc4a86f281670cc9be1fdd4c613

SHA256
2dfeb67e47b8cf7b46385dc64ff9f48d88ca15699d6615151b2ba668bccf251b

SHA512
9fb695f3300f1b0a0edbc5413181230cf0d5eefcd09310e12f3e7b8b969332ebcb639a3944e4496e7b55b9e929823edb86ff21d59f92ed72fa5de7717aba9793

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\qcbo2j0l\qcbo2j0l.0.cs

Filesize
371B

MD5
53ce302f559bd70cb5ac3bfb0425b395

SHA1
89b2367006f7f30084ac523dd5f604179c1bf7ac

SHA256
ad330e769b63783c437e2c41e31451b64fdbb342a3674eb6846e212c2ae83a94

SHA512
ea75a42e0d9ff5c183e3a2091ababed7981538bb4666265f5319ef11714ebfff75e3b72fd232bdc0e48ed58fcc8146adb98e3fa2f553d82e1f1be725edc67e21

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\qcbo2j0l\qcbo2j0l.cmdline

Filesize
235B

MD5
ef7870ecbdd8003b2880eb99c338a84c

SHA1
fc569f3ff4272fc93c5c682ff49f19b676497e9e

SHA256
50afd98a1f954747736decc0cea0ad013acca252933a381d502b77c87afc5b85

SHA512
c73192dc0ea8a2c7d185419be4417848cac9ea4c63587f83b91b30eda520e9e973fc50e34ab20f3070e26dd81c7c78fa1f7a6c195cf191ef1b910cebd7c117aa

Download Submit
\??\c:\Windows\System32\CSCA2C7278C34D441CA8B73B3253F129DC.TMP

Filesize
1KB

MD5
be99f41194f5159cc131a1a4353a0e0a

SHA1
f24e3bf06e777b4de8d072166cff693e43f2295c

SHA256
564d9051e5639603c83562a9ff2c2e478cc7e13d54faf39f761297bac78603bf

SHA512
51d1a50772bb7d689193e6a9b2e363185cf5438103644b2b68cf13e08274c5d99407b99f8cdc856143d28669f5ee4ee316041a8e33df42f55bfd181aa3f3c0f5

Download Submit
memory/1060-11-0x000000001B5B0000-0x000000001B600000-memory.dmp

Filesize
320KB

Download
memory/1060-0-0x00007FFDC0733000-0x00007FFDC0735000-memory.dmp

Filesize
8KB

Download
memory/1060-28-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1060-15-0x000000001B1C0000-0x000000001B1CC000-memory.dmp

Filesize
48KB

Download
memory/1060-32-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1060-8-0x000000001B230000-0x000000001B24C000-memory.dmp

Filesize
112KB

Download
memory/1060-35-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1060-10-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1060-13-0x000000001B560000-0x000000001B578000-memory.dmp

Filesize
96KB

Download
memory/1060-16-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1060-1-0x0000000000420000-0x00000000005FA000-memory.dmp

Filesize
1.9MB

Download
memory/1060-9-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1060-48-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1060-6-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1060-5-0x000000001B1B0000-0x000000001B1BE000-memory.dmp

Filesize
56KB

Download
memory/1060-3-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1060-2-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/2364-54-0x00000213DD680000-0x00000213DD6A2000-memory.dmp

Filesize
136KB

Download