dcrat | 619f85e67208f3639eacc3121636208ce043ce5cf1f5204b86857cb03b5a004a

Analysis

max time kernel
131s
max time network
154s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-11-2024 04:46

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General

Target

GameInputSvc.exe
Size

1.8MB
MD5

42b89874d3138f40f32285be945f2ceb
SHA1

1766b4c4a040ba19afc4318e9b2eab775fee88d7
SHA256

619f85e67208f3639eacc3121636208ce043ce5cf1f5204b86857cb03b5a004a
SHA512

df44c7f5677a0b8e181f52b5c865315672b7c90b37f99c3b5e31714bdbb47d32d652073c42f1e614d2911faddc0394411aa3e1b8c3f832549c0d52f409722ca9
SSDEEP

49152:QdBn+oix+Z7vL4tzzQVGVzDd3Omjq+FLof:QdB+jx+Jv6zQVy1FLof

Score

10^/10

dcrat 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	2872	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3016	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3012	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2628	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2812	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1988	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2620	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2172	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2296	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1456	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1140	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1232	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1932	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2912	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2984	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2980	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2452	2748	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2908	2748	schtasks.exe	30

Executes dropped EXE 1 IoCs

pid	Process
1404	Idle.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 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Uninstall Information\winlogon.exe	GameInputSvc.exe
File created	C:\Program Files (x86)\Uninstall Information\cc11b995f2a76d	GameInputSvc.exe
File created	C:\Program Files (x86)\Common Files\Services\csrss.exe	GameInputSvc.exe
File created	C:\Program Files (x86)\Common Files\Services\886983d96e3d3e	GameInputSvc.exe
File created	C:\Program Files\Mozilla Firefox\defaults\pref\Idle.exe	GameInputSvc.exe
File created	C:\Program Files\Mozilla Firefox\defaults\pref\6ccacd8608530f	GameInputSvc.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\ShellNew\winlogon.exe	GameInputSvc.exe
File created	C:\Windows\ShellNew\cc11b995f2a76d	GameInputSvc.exe

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

System Information Discovery
T1082

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
1232	schtasks.exe
1932	schtasks.exe
2628	schtasks.exe
1456	schtasks.exe
2812	schtasks.exe
2620	schtasks.exe
2296	schtasks.exe
1140	schtasks.exe
2980	schtasks.exe
3016	schtasks.exe
3012	schtasks.exe
2172	schtasks.exe
2912	schtasks.exe
2984	schtasks.exe
2452	schtasks.exe
2908	schtasks.exe
2872	schtasks.exe
1988	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1352	GameInputSvc.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe
1404	Idle.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1404	Idle.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1352	GameInputSvc.exe
Token: SeDebugPrivilege	1404	Idle.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 1804	1352	GameInputSvc.exe	49
PID 1352 wrote to memory of 1804	1352	GameInputSvc.exe	49
PID 1352 wrote to memory of 1804	1352	GameInputSvc.exe	49
PID 1804 wrote to memory of 2320	1804	cmd.exe	51
PID 1804 wrote to memory of 2320	1804	cmd.exe	51
PID 1804 wrote to memory of 2320	1804	cmd.exe	51
PID 1804 wrote to memory of 2424	1804	cmd.exe	52
PID 1804 wrote to memory of 2424	1804	cmd.exe	52
PID 1804 wrote to memory of 2424	1804	cmd.exe	52
PID 1804 wrote to memory of 1404	1804	cmd.exe	53
PID 1804 wrote to memory of 1404	1804	cmd.exe	53
PID 1804 wrote to memory of 1404	1804	cmd.exe	53

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\GameInputSvc.exe
"C:\Users\Admin\AppData\Local\Temp\GameInputSvc.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:1352
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\zXPx3L6jpq.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1804
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2320
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2424
- - C:\Program Files\Mozilla Firefox\defaults\pref\Idle.exe
    "C:\Program Files\Mozilla Firefox\defaults\pref\Idle.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:1404

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Common Files\Services\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2872

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\Services\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3016

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Common Files\Services\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3012

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Uninstall Information\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2628

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files (x86)\Uninstall Information\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2812

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Uninstall Information\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1988

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 8 /tr "'C:\Windows\ShellNew\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2620

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\ShellNew\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2172

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 14 /tr "'C:\Windows\ShellNew\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2296

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 9 /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1456

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1140

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Program Files\Mozilla Firefox\defaults\pref\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1232

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Start Menu\WmiPrvSE.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1932

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Users\Default\Start Menu\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2912

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Start Menu\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2984

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "GameInputSvcG" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\AppData\Local\Temp\GameInputSvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2980

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "GameInputSvc" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\GameInputSvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2452

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "GameInputSvcG" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\AppData\Local\Temp\GameInputSvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2908

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Common Files\Services\csrss.exe

Filesize
1.8MB

MD5
42b89874d3138f40f32285be945f2ceb

SHA1
1766b4c4a040ba19afc4318e9b2eab775fee88d7

SHA256
619f85e67208f3639eacc3121636208ce043ce5cf1f5204b86857cb03b5a004a

SHA512
df44c7f5677a0b8e181f52b5c865315672b7c90b37f99c3b5e31714bdbb47d32d652073c42f1e614d2911faddc0394411aa3e1b8c3f832549c0d52f409722ca9

Download Submit
C:\Users\Admin\AppData\Local\Temp\zXPx3L6jpq.bat

Filesize
231B

MD5
013e599e8c129d19c2db2b2ebd369e8d

SHA1
2240ad7a53434621754044528de3a8a2c81fa66a

SHA256
1341d78b987edd47a942a6fab71ee81974a3303715c688889d8e4c4cea98b93b

SHA512
08a19090931b2dab32e35c9aa1353a6e3167e4a71c2d41bba47699860d5b4d009b20a19075f72268bb11c51974064fa18e01107fab4df62914dd1e9aa5de4097

Download Submit
memory/1352-11-0x000007FEF6260000-0x000007FEF6C4C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-17-0x000007FEF6260000-0x000007FEF6C4C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-4-0x000007FEF6260000-0x000007FEF6C4C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-6-0x0000000000520000-0x000000000052E000-memory.dmp

Filesize
56KB

Download
memory/1352-8-0x00000000009F0000-0x0000000000A0C000-memory.dmp

Filesize
112KB

Download
memory/1352-10-0x0000000000A10000-0x0000000000A28000-memory.dmp

Filesize
96KB

Download
memory/1352-0-0x000007FEF6263000-0x000007FEF6264000-memory.dmp

Filesize
4KB

Download
memory/1352-3-0x000007FEF6260000-0x000007FEF6C4C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-2-0x000007FEF6260000-0x000007FEF6C4C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-24-0x000007FEF6260000-0x000007FEF6C4C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-25-0x000007FEF6260000-0x000007FEF6C4C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-1-0x0000000000FB0000-0x0000000001182000-memory.dmp

Filesize
1.8MB

Download
memory/1352-31-0x000007FEF6260000-0x000007FEF6C4C000-memory.dmp

Filesize
9.9MB

Download
memory/1404-34-0x00000000000C0000-0x0000000000292000-memory.dmp

Filesize
1.8MB

Download