dcrat | 4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408

Analysis

max time kernel
120s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-11-2024 02:14

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General

Target

4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
Size

829KB
MD5

a054982f7e12c1f491eccd25d9c1b5d7
SHA1

b3c78b1c7c8a95486db06e39f56910d0f3e90996
SHA256

4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408
SHA512

d57be5af22f21e7c20d330f5714ddcf1936152e3d9bd2254c1a2c83f420bfe183ae204c871b1ce2d8f5361a1661afbe39a9b5bec12fb00195a8c0b967977a925
SSDEEP

24576:b3eblFYt2e9esxtDyVjD7D1NauFd3YP+ow7:b2rejxtDydhc

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 27 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	3052	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2968	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2112	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2720	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2844	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2816	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1244	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2716	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2652	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2840	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2792	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2648	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3068	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2152	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2692	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1780	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2400	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1160	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2356	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	544	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1752	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1848	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1628	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2016	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1636	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2452	3024	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1908	3024	schtasks.exe	30

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/2212-1-0x0000000000160000-0x0000000000236000-memory.dmp	dcrat
behavioral1/files/0x00050000000193a2-11.dat	dcrat
behavioral1/memory/2032-27-0x00000000008A0000-0x0000000000976000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
2032	sppsvc.exe

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Adobe\0a1fd5f707cd16	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Program Files\Windows Portable Devices\csrss.exe	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Program Files (x86)\Microsoft.NET\RedistList\Idle.exe	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Program Files (x86)\Microsoft.NET\RedistList\6ccacd8608530f	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Program Files (x86)\Adobe\sppsvc.exe	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Program Files\Common Files\SpeechEngines\Microsoft\TTS20\4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\dwm.exe	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\6cb0b6c459d5d3	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Program Files\Windows Portable Devices\886983d96e3d3e	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File opened for modification	C:\Program Files (x86)\Microsoft.NET\RedistList\Idle.exe	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Program Files\Windows NT\Accessories\wininit.exe	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Program Files\Windows NT\Accessories\56085415360792	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\servicing\it-IT\dwm.exe	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Windows\ja-JP\dwm.exe	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
File created	C:\Windows\ja-JP\6cb0b6c459d5d3	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.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 27 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2648	schtasks.exe
2152	schtasks.exe
1636	schtasks.exe
1908	schtasks.exe
2840	schtasks.exe
2400	schtasks.exe
544	schtasks.exe
1848	schtasks.exe
1752	schtasks.exe
2016	schtasks.exe
2452	schtasks.exe
3052	schtasks.exe
2816	schtasks.exe
1780	schtasks.exe
2356	schtasks.exe
1628	schtasks.exe
2844	schtasks.exe
2716	schtasks.exe
2112	schtasks.exe
2720	schtasks.exe
1244	schtasks.exe
2692	schtasks.exe
2792	schtasks.exe
2652	schtasks.exe
1160	schtasks.exe
2968	schtasks.exe
3068	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2212	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
2212	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
2212	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
2032	sppsvc.exe
2032	sppsvc.exe
2032	sppsvc.exe
2032	sppsvc.exe
2032	sppsvc.exe
2032	sppsvc.exe
2032	sppsvc.exe
2032	sppsvc.exe
2032	sppsvc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2032	sppsvc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2212	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
Token: SeDebugPrivilege	2032	sppsvc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2032	2212	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe	58
PID 2212 wrote to memory of 2032	2212	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe	58
PID 2212 wrote to memory of 2032	2212	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe	58
PID 2212 wrote to memory of 2032	2212	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe	58
PID 2212 wrote to memory of 2032	2212	4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.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\4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.exe
"C:\Users\Admin\AppData\Local\Temp\4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408.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:2212
- C:\Program Files (x86)\Adobe\sppsvc.exe
  "C:\Program Files (x86)\Adobe\sppsvc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:2032

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Microsoft.NET\RedistList\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2112

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft.NET\RedistList\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2968

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Microsoft.NET\RedistList\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3052

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows NT\Accessories\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2720

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Windows NT\Accessories\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2816

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows NT\Accessories\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2844

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\Idle.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1244

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Recovery\1b8b1de2-69f6-11ef-9774-62cb582c238c\Idle.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2716

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\NetHood\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2400

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Users\Admin\NetHood\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2792

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\NetHood\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2840

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 14 /tr "'C:\Windows\ja-JP\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2648

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\ja-JP\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2692

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Windows\ja-JP\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3068

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Adobe\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2152

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1780

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Adobe\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1160

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 5 /tr "'C:\Users\Default User\audiodg.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2356

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Users\Default User\audiodg.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:544

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 10 /tr "'C:\Users\Default User\audiodg.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1752

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1848

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1908

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\dwm.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 "csrssc" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Portable Devices\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1636

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2016

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Portable Devices\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1628

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

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\ja-JP\dwm.exe

Filesize
829KB

MD5
a054982f7e12c1f491eccd25d9c1b5d7

SHA1
b3c78b1c7c8a95486db06e39f56910d0f3e90996

SHA256
4b6302643800dafe4629960e243ba26663f8510c42f4eaf656b1cc510406e408

SHA512
d57be5af22f21e7c20d330f5714ddcf1936152e3d9bd2254c1a2c83f420bfe183ae204c871b1ce2d8f5361a1661afbe39a9b5bec12fb00195a8c0b967977a925

Download Submit
memory/2032-27-0x00000000008A0000-0x0000000000976000-memory.dmp

Filesize
856KB

Download
memory/2212-0-0x000007FEF5BA3000-0x000007FEF5BA4000-memory.dmp

Filesize
4KB

Download
memory/2212-1-0x0000000000160000-0x0000000000236000-memory.dmp

Filesize
856KB

Download
memory/2212-2-0x000007FEF5BA0000-0x000007FEF658C000-memory.dmp

Filesize
9.9MB

Download
memory/2212-28-0x000007FEF5BA0000-0x000007FEF658C000-memory.dmp

Filesize
9.9MB

Download