dcrat | 1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19

General

Target

1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
Size

828KB
MD5

46ab1dde1bac98a34cb41166f659db27
SHA1

f12b50ad32d9290d977322c7fb9594ac54d7b64a
SHA256

1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19
SHA512

4890f12e5fbd6f928936ccc2e2cd67414e339d4f2058b84a5cee73ad7600bc2dc5bf0368581781c047620abfa4df9e3fddcb9185f88222d574d6503f67d897b9
SSDEEP

12288:gF+JPdVQB7gH+F44vYVYJ21H3z2oLtubNUPX08fab:gFcVU7gG44vYVH1H/obyCb

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 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	1740	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1760	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3652	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1136	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3844	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1644	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2016	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4604	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3980	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2796	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1456	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3268	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3176	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1756	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1116	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2120	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4044	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4208	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4712	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	852	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4688	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4264	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1704	2268	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4496	2268	schtasks.exe	83

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/2844-1-0x00000000004F0000-0x00000000005C6000-memory.dmp	dcrat
behavioral2/files/0x0008000000023bbb-11.dat	dcrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe

Executes dropped EXE 1 IoCs

pid	Process
5108	dllhost.exe

Drops file in Program Files directory 7 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Mozilla Maintenance Service\logs\5b884080fd4f94	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
File created	C:\Program Files\dotnet\shared\Registry.exe	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
File created	C:\Program Files\dotnet\shared\ee2ad38f3d4382	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
File created	C:\Program Files (x86)\Windows Portable Devices\sysmon.exe	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
File opened for modification	C:\Program Files (x86)\Windows Portable Devices\sysmon.exe	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
File created	C:\Program Files (x86)\Windows Portable Devices\121e5b5079f7c0	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
File created	C:\Program Files (x86)\Mozilla Maintenance Service\logs\fontdrvhost.exe	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\RemotePackages\RemoteDesktops\RuntimeBroker.exe	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
File created	C:\Windows\RemotePackages\RemoteDesktops\9e8d7a4ca61bd9	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
File created	C:\Windows\Downloaded Program Files\1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
File created	C:\Windows\Downloaded Program Files\35b12457cbfc8a	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.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
1760	schtasks.exe
3652	schtasks.exe
4604	schtasks.exe
1456	schtasks.exe
3176	schtasks.exe
4208	schtasks.exe
1740	schtasks.exe
3980	schtasks.exe
4712	schtasks.exe
852	schtasks.exe
1704	schtasks.exe
4496	schtasks.exe
1136	schtasks.exe
3844	schtasks.exe
1644	schtasks.exe
1756	schtasks.exe
4044	schtasks.exe
4688	schtasks.exe
4264	schtasks.exe
2016	schtasks.exe
2796	schtasks.exe
3268	schtasks.exe
1116	schtasks.exe
2120	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2844	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
2844	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
2844	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
2844	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
2844	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
2844	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
2844	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
5108	dllhost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2844	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
Token: SeDebugPrivilege	5108	dllhost.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 5108	2844	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe	108
PID 2844 wrote to memory of 5108	2844	1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe	108

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\1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe
"C:\Users\Admin\AppData\Local\Temp\1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Recovery\WindowsRE\dllhost.exe
  "C:\Recovery\WindowsRE\dllhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5108

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Portable Devices\sysmon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1740

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Portable Devices\sysmon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1760

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows Portable Devices\sysmon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1136

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3844

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1644

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Windows\RemotePackages\RemoteDesktops\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2016

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\RemotePackages\RemoteDesktops\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4604

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Windows\RemotePackages\RemoteDesktops\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1456

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\fontdrvhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3980

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2796

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\fontdrvhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3268

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 12 /tr "'C:\Program Files\dotnet\shared\Registry.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3176

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Registry" /sc ONLOGON /tr "'C:\Program Files\dotnet\shared\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1756

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RegistryR" /sc MINUTE /mo 5 /tr "'C:\Program Files\dotnet\shared\Registry.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2120

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1116

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:852

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4712

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4208

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4688

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c191" /sc MINUTE /mo 12 /tr "'C:\Windows\Downloaded Program Files\1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4496

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19" /sc ONLOGON /tr "'C:\Windows\Downloaded Program Files\1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1704

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c191" /sc MINUTE /mo 13 /tr "'C:\Windows\Downloaded Program Files\1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4264

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\dotnet\shared\Registry.exe

Filesize
828KB

MD5
46ab1dde1bac98a34cb41166f659db27

SHA1
f12b50ad32d9290d977322c7fb9594ac54d7b64a

SHA256
1c281aad64e57aed57f78a3a35797381309c161e89e70a6803f3ec166fb29c19

SHA512
4890f12e5fbd6f928936ccc2e2cd67414e339d4f2058b84a5cee73ad7600bc2dc5bf0368581781c047620abfa4df9e3fddcb9185f88222d574d6503f67d897b9

Download Submit
memory/2844-0-0x00007FFA210C3000-0x00007FFA210C5000-memory.dmp

Filesize
8KB

Download
memory/2844-1-0x00000000004F0000-0x00000000005C6000-memory.dmp

Filesize
856KB

Download
memory/2844-2-0x00007FFA210C0000-0x00007FFA21B81000-memory.dmp

Filesize
10.8MB

Download
memory/2844-30-0x00007FFA210C0000-0x00007FFA21B81000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads