dcrat | 7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e

General

Target

7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
Size

827KB
MD5

759b333fd8d1eedb5666fdea1da25b25
SHA1

b66fc861196561f793062622b88cdb1065e35459
SHA256

7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e
SHA512

831006157773f5a30dbf07dcbfd484f49a978c077f8e132d33c8e044f8141462bb890c344724b23c3144488c1c406d576b7009c1205772a503ce6cc92692aec3
SSDEEP

12288:M+B2ad7F/Jf2xm1/nNfkOV+0Z3+5DlpAXdet4y5+q:gad7PuxmRn60Zu7xtZp

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 9 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	4160	32	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	516	32	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	452	32	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1260	32	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3328	32	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2436	32	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3256	32	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4180	32	schtasks.exe	83
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3356	32	schtasks.exe	83

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/4424-1-0x00000000000B0000-0x0000000000186000-memory.dmp	dcrat
behavioral2/files/0x0007000000023c78-11.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe

Executes dropped EXE 1 IoCs

pid	Process
2468	Idle.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files\ModifiableWindowsApps\services.exe	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
File created	C:\Program Files\Windows Defender\MusNotification.exe	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
File created	C:\Program Files\Windows Defender\aa97147c4c782d	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\6ccacd8608530f	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.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 9 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4160	schtasks.exe
516	schtasks.exe
1260	schtasks.exe
4180	schtasks.exe
452	schtasks.exe
3328	schtasks.exe
2436	schtasks.exe
3256	schtasks.exe
3356	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
2468	Idle.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
Token: SeDebugPrivilege	2468	Idle.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4424 wrote to memory of 2468	4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe	93
PID 4424 wrote to memory of 2468	4424	7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe	93

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\7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe
"C:\Users\Admin\AppData\Local\Temp\7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4424
- C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe
  "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2468

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 14 /tr "'C:\Users\Default\TextInputHost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4160

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Users\Default\TextInputHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:516

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 6 /tr "'C:\Users\Default\TextInputHost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:452

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Defender\MusNotification.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1260

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "MusNotification" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\MusNotification.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3328

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Defender\MusNotification.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2436

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3256

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4180

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3356

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 (x86)\Adobe\Acrobat Reader DC\Resource\Idle.exe

Filesize
827KB

MD5
759b333fd8d1eedb5666fdea1da25b25

SHA1
b66fc861196561f793062622b88cdb1065e35459

SHA256
7a1a3397249836cac73c5f104211fb6cbb2317c830c148a65acb709210aadd2e

SHA512
831006157773f5a30dbf07dcbfd484f49a978c077f8e132d33c8e044f8141462bb890c344724b23c3144488c1c406d576b7009c1205772a503ce6cc92692aec3

Download Submit
memory/4424-0-0x00007FFDEF4D3000-0x00007FFDEF4D5000-memory.dmp

Filesize
8KB

Download
memory/4424-1-0x00000000000B0000-0x0000000000186000-memory.dmp

Filesize
856KB

Download
memory/4424-2-0x00007FFDEF4D0000-0x00007FFDEFF91000-memory.dmp

Filesize
10.8MB

Download
memory/4424-21-0x00007FFDEF4D0000-0x00007FFDEFF91000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads