dcrat | 59587a702b395acaad29b4cd695d7c236ef19dba0375ad16010e7a170dc90929

General

Target

488291ee16052448a88ff5f4b4ff7472.exe
Size

828KB
MD5

488291ee16052448a88ff5f4b4ff7472
SHA1

b7f7a100fd8f36501de1fec9f277aa7f73918c15
SHA256

59587a702b395acaad29b4cd695d7c236ef19dba0375ad16010e7a170dc90929
SHA512

050af158ba434d95cc4e520675c1fc9c9079103ae9af853615044aa2df8d0f8990fc0da095fe7334c82897d3a303cc386298e9133479bd6a39bebb1245d28108
SSDEEP

12288:u9V+q0VaZWcItdHp6yY9gNmNpsrx5fpgEYjqnK9cG:gXeaZWrHp6wcYFbZYeKt

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

Process spawned unexpected child process 24 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	2644	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1996	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3012	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2640	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2520	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2604	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2972	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1944	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1428	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1556	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2204	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2388	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2096	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2116	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1396	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2736	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1964	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2056	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2420	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	572	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	536	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2780	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2944	2532	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2764	2532	schtasks.exe	30

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2668-1-0x0000000000330000-0x0000000000406000-memory.dmp	dcrat
behavioral1/files/0x0005000000018722-11.dat	dcrat
behavioral1/memory/2756-27-0x0000000001120000-0x00000000011F6000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
2756	wininit.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft Office\CLIPART\Publisher\Backgrounds\smss.exe	488291ee16052448a88ff5f4b4ff7472.exe
File created	C:\Program Files (x86)\Microsoft Office\CLIPART\Publisher\Backgrounds\69ddcba757bf72	488291ee16052448a88ff5f4b4ff7472.exe
File created	C:\Program Files (x86)\Windows Portable Devices\WmiPrvSE.exe	488291ee16052448a88ff5f4b4ff7472.exe
File created	C:\Program Files (x86)\Windows Portable Devices\24dbde2999530e	488291ee16052448a88ff5f4b4ff7472.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File created	C:\Windows\Registration\CRMLog\7a0fd90576e088	488291ee16052448a88ff5f4b4ff7472.exe
File created	C:\Windows\twain_32\488291ee16052448a88ff5f4b4ff7472.exe	488291ee16052448a88ff5f4b4ff7472.exe
File created	C:\Windows\twain_32\9e6a21ecbcd9bd	488291ee16052448a88ff5f4b4ff7472.exe
File created	C:\Windows\PolicyDefinitions\en-US\wininit.exe	488291ee16052448a88ff5f4b4ff7472.exe
File created	C:\Windows\PolicyDefinitions\en-US\56085415360792	488291ee16052448a88ff5f4b4ff7472.exe
File created	C:\Windows\Registration\CRMLog\explorer.exe	488291ee16052448a88ff5f4b4ff7472.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 24 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1996	schtasks.exe
2640	schtasks.exe
2972	schtasks.exe
1556	schtasks.exe
2096	schtasks.exe
2604	schtasks.exe
2204	schtasks.exe
1396	schtasks.exe
1964	schtasks.exe
572	schtasks.exe
536	schtasks.exe
2944	schtasks.exe
2644	schtasks.exe
3012	schtasks.exe
2520	schtasks.exe
2116	schtasks.exe
2736	schtasks.exe
2056	schtasks.exe
1944	schtasks.exe
1428	schtasks.exe
2388	schtasks.exe
2420	schtasks.exe
2780	schtasks.exe
2764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2668	488291ee16052448a88ff5f4b4ff7472.exe
2756	wininit.exe
2756	wininit.exe
2756	wininit.exe
2756	wininit.exe
2756	wininit.exe
2756	wininit.exe
2756	wininit.exe
2756	wininit.exe
2756	wininit.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2756	wininit.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2668	488291ee16052448a88ff5f4b4ff7472.exe
Token: SeDebugPrivilege	2756	wininit.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 236	2668	488291ee16052448a88ff5f4b4ff7472.exe	55
PID 2668 wrote to memory of 236	2668	488291ee16052448a88ff5f4b4ff7472.exe	55
PID 2668 wrote to memory of 236	2668	488291ee16052448a88ff5f4b4ff7472.exe	55
PID 236 wrote to memory of 1672	236	cmd.exe	57
PID 236 wrote to memory of 1672	236	cmd.exe	57
PID 236 wrote to memory of 1672	236	cmd.exe	57
PID 236 wrote to memory of 2756	236	cmd.exe	58
PID 236 wrote to memory of 2756	236	cmd.exe	58
PID 236 wrote to memory of 2756	236	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\488291ee16052448a88ff5f4b4ff7472.exe
"C:\Users\Admin\AppData\Local\Temp\488291ee16052448a88ff5f4b4ff7472.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:2668
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\N13xF3ikhj.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:236
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:1672
- - C:\MSOCache\All Users\wininit.exe
    "C:\MSOCache\All Users\wininit.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2756

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2644

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\MSOCache\All Users\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1996

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\wininit.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 "spoolsvs" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Templates\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2640

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Users\Default\Templates\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2520

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\Users\Default\Templates\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2604

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\Windows\Registration\CRMLog\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2972

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\Registration\CRMLog\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1944

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 10 /tr "'C:\Windows\Registration\CRMLog\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1428

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Microsoft Office\CLIPART\Publisher\Backgrounds\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1556

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Office\CLIPART\Publisher\Backgrounds\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2204

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Microsoft Office\CLIPART\Publisher\Backgrounds\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2388

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\PrintHood\services.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2096

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Users\Admin\PrintHood\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2116

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\PrintHood\services.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1396

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "488291ee16052448a88ff5f4b4ff74724" /sc MINUTE /mo 9 /tr "'C:\Windows\twain_32\488291ee16052448a88ff5f4b4ff7472.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2736

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "488291ee16052448a88ff5f4b4ff7472" /sc ONLOGON /tr "'C:\Windows\twain_32\488291ee16052448a88ff5f4b4ff7472.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1964

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "488291ee16052448a88ff5f4b4ff74724" /sc MINUTE /mo 13 /tr "'C:\Windows\twain_32\488291ee16052448a88ff5f4b4ff7472.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2056

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 14 /tr "'C:\Windows\PolicyDefinitions\en-US\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2420

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\PolicyDefinitions\en-US\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:572

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\Windows\PolicyDefinitions\en-US\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:536

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Portable Devices\WmiPrvSE.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2780

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Portable Devices\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2944

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Portable Devices\WmiPrvSE.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2764

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\N13xF3ikhj.bat

Filesize
198B

MD5
ec050efdb73a32c9135ffad5b37347ea

SHA1
0520beff6f70d82e802deaf339d9ea5490aed588

SHA256
f3232046c5350403cb03c244381768d41cc25939b800f9851c29d2d7d3a6b5b0

SHA512
0e919d9864bc8fb8b0762a70178c7b80627f83fbfff5afb9d3982262401b13f8f9951164fd10ae85ca40c8cba92a70b810add453ec7b10dbf2c3e7d2c5c27f56

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Printer Shortcuts\services.exe

Filesize
828KB

MD5
488291ee16052448a88ff5f4b4ff7472

SHA1
b7f7a100fd8f36501de1fec9f277aa7f73918c15

SHA256
59587a702b395acaad29b4cd695d7c236ef19dba0375ad16010e7a170dc90929

SHA512
050af158ba434d95cc4e520675c1fc9c9079103ae9af853615044aa2df8d0f8990fc0da095fe7334c82897d3a303cc386298e9133479bd6a39bebb1245d28108

Download Submit
memory/2668-0-0x000007FEF5BC3000-0x000007FEF5BC4000-memory.dmp

Filesize
4KB

Download
memory/2668-1-0x0000000000330000-0x0000000000406000-memory.dmp

Filesize
856KB

Download
memory/2668-2-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp

Filesize
9.9MB

Download
memory/2668-23-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-27-0x0000000001120000-0x00000000011F6000-memory.dmp

Filesize
856KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads