dcrat | bf535e7a5785a1986e37eb8b8aea34917fbc3b325477a9b2282a69ce2c7886fc

General

Target

7c967ba56e075c2e3b7c00f241174af9.exe
Size

828KB
MD5

7c967ba56e075c2e3b7c00f241174af9
SHA1

02b5a1faf356d26d5a2e8bf3a9bad60d9d58a481
SHA256

bf535e7a5785a1986e37eb8b8aea34917fbc3b325477a9b2282a69ce2c7886fc
SHA512

ac3100408fff39ee6439bdb26989babbae63a66f0282d221e45f2f71e20dee047c2e71320937f49e1856aa8b44a76b918ea21062676d8e7272a622a5850f933f
SSDEEP

12288:DP7E9MKvhdF3pJCh2jyiNInfPPCB51Po5Wo4pkLzCJZnzeZDaS:DPgMKvh4ianfPPa7nkH8Zn6ZR

Score

10^/10

dcrat 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	2104	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2756	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2832	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2676	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2708	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1276	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2360	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	876	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2004	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1324	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2424	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	952	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2536	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1504	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2232	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1304	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2488	664	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2396	664	schtasks.exe	30

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2892-1-0x0000000000B70000-0x0000000000C46000-memory.dmp	dcrat
behavioral1/files/0x0005000000019fd4-11.dat	dcrat
behavioral1/memory/1520-23-0x00000000002D0000-0x00000000003A6000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
1520	explorer.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Mozilla Firefox\browser\features\dwm.exe	7c967ba56e075c2e3b7c00f241174af9.exe
File created	C:\Program Files\Mozilla Firefox\browser\features\6cb0b6c459d5d3	7c967ba56e075c2e3b7c00f241174af9.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\DigitalLocker\de-DE\explorer.exe	7c967ba56e075c2e3b7c00f241174af9.exe
File created	C:\Windows\DigitalLocker\de-DE\7a0fd90576e088	7c967ba56e075c2e3b7c00f241174af9.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
2396	schtasks.exe
1276	schtasks.exe
2360	schtasks.exe
1324	schtasks.exe
952	schtasks.exe
1504	schtasks.exe
2488	schtasks.exe
2832	schtasks.exe
876	schtasks.exe
2004	schtasks.exe
2536	schtasks.exe
1304	schtasks.exe
2104	schtasks.exe
2424	schtasks.exe
2232	schtasks.exe
2756	schtasks.exe
2676	schtasks.exe
2708	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2892	7c967ba56e075c2e3b7c00f241174af9.exe
1520	explorer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2892	7c967ba56e075c2e3b7c00f241174af9.exe
Token: SeDebugPrivilege	1520	explorer.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2892 wrote to memory of 3056	2892	7c967ba56e075c2e3b7c00f241174af9.exe	50
PID 2892 wrote to memory of 3056	2892	7c967ba56e075c2e3b7c00f241174af9.exe	50
PID 2892 wrote to memory of 3056	2892	7c967ba56e075c2e3b7c00f241174af9.exe	50
PID 3056 wrote to memory of 2252	3056	cmd.exe	52
PID 3056 wrote to memory of 2252	3056	cmd.exe	52
PID 3056 wrote to memory of 2252	3056	cmd.exe	52
PID 3056 wrote to memory of 1520	3056	cmd.exe	53
PID 3056 wrote to memory of 1520	3056	cmd.exe	53
PID 3056 wrote to memory of 1520	3056	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\7c967ba56e075c2e3b7c00f241174af9.exe
"C:\Users\Admin\AppData\Local\Temp\7c967ba56e075c2e3b7c00f241174af9.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:2892
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\X2G7mwE2Li.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3056
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2252
- - C:\Windows\DigitalLocker\de-DE\explorer.exe
    "C:\Windows\DigitalLocker\de-DE\explorer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1520

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "7c967ba56e075c2e3b7c00f241174af97" /sc MINUTE /mo 10 /tr "'C:\Users\Public\Recorded TV\Sample Media\7c967ba56e075c2e3b7c00f241174af9.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2104

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "7c967ba56e075c2e3b7c00f241174af9" /sc ONLOGON /tr "'C:\Users\Public\Recorded TV\Sample Media\7c967ba56e075c2e3b7c00f241174af9.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2756

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "7c967ba56e075c2e3b7c00f241174af97" /sc MINUTE /mo 5 /tr "'C:\Users\Public\Recorded TV\Sample Media\7c967ba56e075c2e3b7c00f241174af9.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2832

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2676

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2708

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-0115-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1276

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 10 /tr "'C:\Users\Public\Desktop\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2360

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Users\Public\Desktop\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:876

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Users\Public\Desktop\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2004

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\Program Files\Mozilla Firefox\browser\features\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1324

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Mozilla Firefox\browser\features\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2424

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Program Files\Mozilla Firefox\browser\features\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:952

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2536

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1504

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2232

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Windows\DigitalLocker\de-DE\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1304

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\DigitalLocker\de-DE\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2488

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Windows\DigitalLocker\de-DE\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\spoolsv.exe

Filesize
828KB

MD5
7c967ba56e075c2e3b7c00f241174af9

SHA1
02b5a1faf356d26d5a2e8bf3a9bad60d9d58a481

SHA256
bf535e7a5785a1986e37eb8b8aea34917fbc3b325477a9b2282a69ce2c7886fc

SHA512
ac3100408fff39ee6439bdb26989babbae63a66f0282d221e45f2f71e20dee047c2e71320937f49e1856aa8b44a76b918ea21062676d8e7272a622a5850f933f

Download Submit
C:\Users\Admin\AppData\Local\Temp\X2G7mwE2Li.bat

Filesize
208B

MD5
87a3349d17cf0e5c0d9d413f095ddec3

SHA1
cfe96174b2cb7345eb37ae102ebd81504b7162ef

SHA256
1332c138350f239343ad10ed1380a42d8da1854692c502ad3b8bbf87d2f41e71

SHA512
e13af1dc253e2614309b8934917d311dfa82a8001f84f172fa6a422d05e0382652a1b5d89182f3b9487549772c920481e9b95a58ac397e76170373ba50604dce

Download Submit
memory/1520-23-0x00000000002D0000-0x00000000003A6000-memory.dmp

Filesize
856KB

Download
memory/2892-0-0x000007FEF56D3000-0x000007FEF56D4000-memory.dmp

Filesize
4KB

Download
memory/2892-1-0x0000000000B70000-0x0000000000C46000-memory.dmp

Filesize
856KB

Download
memory/2892-2-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

Filesize
9.9MB

Download
memory/2892-20-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads