dcrat | de22374f782e1898ae2c015f41159b7485122a65ef26b0850e3c0609d41f2cde

Analysis

max time kernel
119s
max time network
149s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
08-12-2024 16:06

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General

Target

FF3F337BA133257BF7EF80C83AF6A374.exe
Size

1.7MB
MD5

ff3f337ba133257bf7ef80c83af6a374
SHA1

6c1746e5455bba5c362db11bf5aef0adaaea6337
SHA256

de22374f782e1898ae2c015f41159b7485122a65ef26b0850e3c0609d41f2cde
SHA512

f245180c0edbcd0836abc01e6660a95d698056109151e1451b8ce17c128aea1456c5cb3b23439645ef9dcc155a11801ee0d3ac6e334b66db191da98bb404a053
SSDEEP

24576:LKoAZDIza+c3NunPWpnVuO2PJftX9fRQY16zIWJC5JUqR8lLr0I4gyid81sRO/F:LKdluO2P3N5QkWtlLr0ICNyO

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

Process spawned unexpected child process 18 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2952	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3000	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2156	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2968	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2724	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3044	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2744	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2684	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2760	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2528	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2588	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1692	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1496	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2888	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1040	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2864	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1728	2276	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2868	2276	schtasks.exe	30

Executes dropped EXE 1 IoCs

pid	Process
2784	winlogon.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\dllhost.exe	FF3F337BA133257BF7EF80C83AF6A374.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\dllhost.exe	FF3F337BA133257BF7EF80C83AF6A374.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\5940a34987c991	FF3F337BA133257BF7EF80C83AF6A374.exe
File created	C:\Program Files (x86)\Windows Sidebar\FF3F337BA133257BF7EF80C83AF6A374.exe	FF3F337BA133257BF7EF80C83AF6A374.exe
File created	C:\Program Files (x86)\Windows Sidebar\ead0fde70d17ad	FF3F337BA133257BF7EF80C83AF6A374.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\PolicyDefinitions\es-ES\OSPPSVC.exe	FF3F337BA133257BF7EF80C83AF6A374.exe
File created	C:\Windows\PolicyDefinitions\es-ES\1610b97d3ab4a7	FF3F337BA133257BF7EF80C83AF6A374.exe
File created	C:\Windows\BitLockerDiscoveryVolumeContents\services.exe	FF3F337BA133257BF7EF80C83AF6A374.exe
File created	C:\Windows\BitLockerDiscoveryVolumeContents\c5b4cb5e9653cc	FF3F337BA133257BF7EF80C83AF6A374.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
1960	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1960	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1040	schtasks.exe
1728	schtasks.exe
2968	schtasks.exe
2724	schtasks.exe
2684	schtasks.exe
1496	schtasks.exe
2528	schtasks.exe
2864	schtasks.exe
2156	schtasks.exe
3044	schtasks.exe
2744	schtasks.exe
2760	schtasks.exe
2952	schtasks.exe
3000	schtasks.exe
1692	schtasks.exe
2888	schtasks.exe
2588	schtasks.exe
2868	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
1504	FF3F337BA133257BF7EF80C83AF6A374.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe
2784	winlogon.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1504	FF3F337BA133257BF7EF80C83AF6A374.exe
Token: SeDebugPrivilege	2784	winlogon.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 1644	1504	FF3F337BA133257BF7EF80C83AF6A374.exe	49
PID 1504 wrote to memory of 1644	1504	FF3F337BA133257BF7EF80C83AF6A374.exe	49
PID 1504 wrote to memory of 1644	1504	FF3F337BA133257BF7EF80C83AF6A374.exe	49
PID 1644 wrote to memory of 2312	1644	cmd.exe	51
PID 1644 wrote to memory of 2312	1644	cmd.exe	51
PID 1644 wrote to memory of 2312	1644	cmd.exe	51
PID 1644 wrote to memory of 1960	1644	cmd.exe	52
PID 1644 wrote to memory of 1960	1644	cmd.exe	52
PID 1644 wrote to memory of 1960	1644	cmd.exe	52
PID 1644 wrote to memory of 2784	1644	cmd.exe	54
PID 1644 wrote to memory of 2784	1644	cmd.exe	54
PID 1644 wrote to memory of 2784	1644	cmd.exe	54

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\FF3F337BA133257BF7EF80C83AF6A374.exe
"C:\Users\Admin\AppData\Local\Temp\FF3F337BA133257BF7EF80C83AF6A374.exe"
1⤵
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\6c11gPk5W7.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1644
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2312
- - C:\Windows\system32\PING.EXE
    ping -n 10 localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1960
- - C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\winlogon.exe
    "C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\winlogon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2784

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 10 /tr "'C:\Windows\PolicyDefinitions\es-ES\OSPPSVC.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2952

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Windows\PolicyDefinitions\es-ES\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3000

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 6 /tr "'C:\Windows\PolicyDefinitions\es-ES\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2156

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 8 /tr "'C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2968

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2724

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Recovery\f6a14ac2-8725-11ef-a9ab-dab21757c799\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "FF3F337BA133257BF7EF80C83AF6A374F" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Sidebar\FF3F337BA133257BF7EF80C83AF6A374.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2744

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "FF3F337BA133257BF7EF80C83AF6A374" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Sidebar\FF3F337BA133257BF7EF80C83AF6A374.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2684

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "FF3F337BA133257BF7EF80C83AF6A374F" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Sidebar\FF3F337BA133257BF7EF80C83AF6A374.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2760

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 5 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2528

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2588

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 6 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1692

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1496

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2888

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Setup Files\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1040

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "FF3F337BA133257BF7EF80C83AF6A374F" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\AppData\Local\Temp\FF3F337BA133257BF7EF80C83AF6A374.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2864

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "FF3F337BA133257BF7EF80C83AF6A374" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\FF3F337BA133257BF7EF80C83AF6A374.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1728

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "FF3F337BA133257BF7EF80C83AF6A374F" /sc MINUTE /mo 10 /tr "'C:\Users\Admin\AppData\Local\Temp\FF3F337BA133257BF7EF80C83AF6A374.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\6c11gPk5W7.bat

Filesize
189B

MD5
fba84e725c1f6bec90be2c37a7e6f933

SHA1
e4d50496ac73ce78111d31cfb2db8552d02dd13b

SHA256
2c8a46f01d6cd8cfdf62f3768570d6dcc52580f0bdbbba9fbda375886f36c756

SHA512
6fa9f30bc0cec0673dc4dacdfe6be08496307929f8a21afc915277de377a97e6cca8a41b10ee92f482cc2b69a42514b93cb404e5aee687005ef6ab3facf551e7

Download Submit
C:\Windows\PolicyDefinitions\es-ES\OSPPSVC.exe

Filesize
1.7MB

MD5
ff3f337ba133257bf7ef80c83af6a374

SHA1
6c1746e5455bba5c362db11bf5aef0adaaea6337

SHA256
de22374f782e1898ae2c015f41159b7485122a65ef26b0850e3c0609d41f2cde

SHA512
f245180c0edbcd0836abc01e6660a95d698056109151e1451b8ce17c128aea1456c5cb3b23439645ef9dcc155a11801ee0d3ac6e334b66db191da98bb404a053

Download Submit
memory/1504-11-0x0000000000410000-0x000000000041C000-memory.dmp

Filesize
48KB

Download
memory/1504-2-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1504-4-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1504-6-0x00000000003F0000-0x00000000003FE000-memory.dmp

Filesize
56KB

Download
memory/1504-8-0x0000000000420000-0x0000000000438000-memory.dmp

Filesize
96KB

Download
memory/1504-9-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1504-0-0x000007FEF4E33000-0x000007FEF4E34000-memory.dmp

Filesize
4KB

Download
memory/1504-3-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1504-23-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1504-24-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1504-25-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1504-30-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1504-1-0x0000000001150000-0x0000000001310000-memory.dmp

Filesize
1.8MB

Download
memory/2784-34-0x00000000008C0000-0x0000000000A80000-memory.dmp

Filesize
1.8MB

Download