dcrat | a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7

Analysis

max time kernel
118s
max time network
150s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-12-2024 17:53

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General

Target

a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe
Size

2.1MB
MD5

6261ec3f13e1cc6ae25ee8942db137b0
SHA1

20629ed3f752869dc4980827291bf3064333405f
SHA256

a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7
SHA512

ed292a77db5e9926cbaa247e449a4019776b2452d2e8cdadfcea4c3d7551372793b2a1125b44cfd5106d2b03ff178041d413750ee81bfc42d7a3252a934b51f1
SSDEEP

24576:2TbBv5rUyXVpz/IPMofzXxgF5X1u1seTK44vmrUcSgjBYsRX8TGxj4fY3D5K7Tqb:IBJp0PbsCk44v0y4BYgAGxrNKvdVT6

Score

10^/10

dcrat discovery 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

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	604	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2716	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2824	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2136	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1824	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	304	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	572	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1532	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2772	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3008	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3024	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2176	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2920	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	944	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1884	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1880	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2272	2504	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2080	2504	schtasks.exe	34

Executes dropped EXE 2 IoCs

pid	Process
2832	Winver.exe
1840	csrss.exe

Loads dropped DLL 2 IoCs

pid	Process
2312	cmd.exe
2312	cmd.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 Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files\Windows NT\explorer.exe	Winver.exe
File created	C:\Program Files\Windows NT\7a0fd90576e088	Winver.exe
File created	C:\Program Files\Internet Explorer\es-ES\taskhost.exe	Winver.exe
File created	C:\Program Files\Internet Explorer\es-ES\b75386f1303e64	Winver.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\rescache\rc0006\csrss.exe	Winver.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	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.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
2100	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2100	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
944	schtasks.exe
1884	schtasks.exe
1880	schtasks.exe
2272	schtasks.exe
2080	schtasks.exe
3024	schtasks.exe
304	schtasks.exe
572	schtasks.exe
2920	schtasks.exe
2824	schtasks.exe
3008	schtasks.exe
2176	schtasks.exe
604	schtasks.exe
2136	schtasks.exe
1824	schtasks.exe
1532	schtasks.exe
2772	schtasks.exe
2716	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
2832	Winver.exe
1840	csrss.exe
1840	csrss.exe
1840	csrss.exe
1840	csrss.exe
1840	csrss.exe
1840	csrss.exe
1840	csrss.exe
1840	csrss.exe
1840	csrss.exe
1840	csrss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2832	Winver.exe
Token: SeDebugPrivilege	1840	csrss.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 1932	2444	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	30
PID 2444 wrote to memory of 1932	2444	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	30
PID 2444 wrote to memory of 1932	2444	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	30
PID 2444 wrote to memory of 1932	2444	a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe	30
PID 1932 wrote to memory of 2312	1932	WScript.exe	31
PID 1932 wrote to memory of 2312	1932	WScript.exe	31
PID 1932 wrote to memory of 2312	1932	WScript.exe	31
PID 1932 wrote to memory of 2312	1932	WScript.exe	31
PID 2312 wrote to memory of 2832	2312	cmd.exe	33
PID 2312 wrote to memory of 2832	2312	cmd.exe	33
PID 2312 wrote to memory of 2832	2312	cmd.exe	33
PID 2312 wrote to memory of 2832	2312	cmd.exe	33
PID 2832 wrote to memory of 2088	2832	Winver.exe	53
PID 2832 wrote to memory of 2088	2832	Winver.exe	53
PID 2832 wrote to memory of 2088	2832	Winver.exe	53
PID 2088 wrote to memory of 2384	2088	cmd.exe	55
PID 2088 wrote to memory of 2384	2088	cmd.exe	55
PID 2088 wrote to memory of 2384	2088	cmd.exe	55
PID 2088 wrote to memory of 2100	2088	cmd.exe	56
PID 2088 wrote to memory of 2100	2088	cmd.exe	56
PID 2088 wrote to memory of 2100	2088	cmd.exe	56
PID 2088 wrote to memory of 1840	2088	cmd.exe	58
PID 2088 wrote to memory of 1840	2088	cmd.exe	58
PID 2088 wrote to memory of 1840	2088	cmd.exe	58

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\a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe
"C:\Users\Admin\AppData\Local\Temp\a6429d9778a93254c7387cf588619a2635ed97108558a122de885aad25a57eb7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\ESD\UST9UxLQoHNIIFaYLHo0xhIRlgCNcLzoLb106m2nL.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1932
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\ESD\bQzfgHSGdt2kLcLlkun74cHPltHDXr5Sp886hMeTP.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2312
  - - C:\ESD\Winver.exe
      "C:\ESD/Winver.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2832
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\l6yL9X5gEI.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2088
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:2384
      - C:\Windows\system32\PING.EXE
        
        ping -n 10 localhost
        6⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2100
      - C:\Users\Admin\Documents\My Pictures\csrss.exe
        
        "C:\Users\Admin\Documents\My Pictures\csrss.exe"
        6⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1840

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Documents\My Pictures\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:604

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Admin\Documents\My Pictures\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2716

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Documents\My Pictures\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2824

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\ESD\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2136

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\ESD\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1824

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'C:\ESD\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:304

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows NT\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:572

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files\Windows NT\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1532

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows NT\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2772

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 9 /tr "'C:\Program Files\Internet Explorer\es-ES\taskhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3008

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\es-ES\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3024

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 7 /tr "'C:\Program Files\Internet Explorer\es-ES\taskhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2176

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Documents\OSPPSVC.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2920

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Users\All Users\Documents\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:944

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Documents\OSPPSVC.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1884

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WinverW" /sc MINUTE /mo 7 /tr "'C:\ESD\Winver.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1880

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Winver" /sc ONLOGON /tr "'C:\ESD\Winver.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2272

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WinverW" /sc MINUTE /mo 11 /tr "'C:\ESD\Winver.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2080

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

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:\ESD\UST9UxLQoHNIIFaYLHo0xhIRlgCNcLzoLb106m2nL.vbe

Filesize
222B

MD5
8decf43a92645d8ba4b81696c5e7b1ae

SHA1
dcc9ca8b24e3adf7568eb0f6b7f5cd27f039faf6

SHA256
6ad34bd4e803fad802052423aeab64f4c60dd3ee55a3167425b9640ae24bfea1

SHA512
72e44773f484d2e69ebd41cc555d9a57c833b3930e1f3b0326c90882035e0dc5fb54e8d4ded22cf9f2d28fb502b37b133b7c1c9f9d89b8c21857b569c51ebc17

Download Submit
C:\ESD\bQzfgHSGdt2kLcLlkun74cHPltHDXr5Sp886hMeTP.bat

Filesize
57B

MD5
d1a4f1e326e7dfca62327ea69446dc7c

SHA1
253e264c90cbd15836d8c3a1eab3c26756d94047

SHA256
ea091556a5dbab314a6029817a9db64f9b8adc7afb476bbbb11aec0c227f0de2

SHA512
3d4624c169297b50329a4e13f3f559a7a1f02112f6482e45cfba747dad11c6e6642f1411cec5e92d7890f86fb38702f48c75fec4d24332d43484ad7b9dbf29c8

Download Submit
C:\Users\Admin\AppData\Local\Temp\l6yL9X5gEI.bat

Filesize
174B

MD5
21309d1b3c7ef7c1bb5817e415b64e6c

SHA1
bc0f7ba31e91e809e3385e3d9513bf2cb67e3c23

SHA256
fed327805e826bd999ffe09e7a14d5e87b3347620a3b49a5f885a8bb07a51ee9

SHA512
01fabe40f78628255bd88aae840bb38217c4e8fd67f973e974642c9d1cab950aeba63861061c13281c69ba50dc46e0822c236f221f1e848dbfcccf1e4761de41

Download Submit
\ESD\Winver.exe

Filesize
1.8MB

MD5
d9ce1032fee5365065a78bbff7267883

SHA1
4c7471b47d4151908dd204303421d7c64cf4c5c6

SHA256
65d26e7c0b856832e88efefe5c2a9e767fb2a7345715bbd0a6e10f9ac2afb520

SHA512
0455364fa91c07da6fecbfb3e3fdbbbcb909e3176b5b151e3653f8b8ebffc02e14fb3471245df479b83f90cd2e1142bcff82b80555cfb3df113696b2925d9435

Download Submit
memory/1840-38-0x0000000000F60000-0x0000000001134000-memory.dmp

Filesize
1.8MB

Download
memory/2832-13-0x0000000000B10000-0x0000000000CE4000-memory.dmp

Filesize
1.8MB

Download
memory/2832-15-0x00000000003F0000-0x00000000003FE000-memory.dmp

Filesize
56KB

Download
memory/2832-17-0x0000000000430000-0x000000000044C000-memory.dmp

Filesize
112KB

Download
memory/2832-19-0x0000000000450000-0x0000000000468000-memory.dmp

Filesize
96KB

Download