dcrat | ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-10-2024 14:39

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General

Target

ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
Size

827KB
MD5

3d1284856779580aa24ff1c338c265da
SHA1

2d2e0de25e7c496613bdd59081b54cb18871d582
SHA256

ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f
SHA512

e9c077e5551cb0e37ca0bbd1d9ee3b8f84d2d270924e172eb3ec089feca74d1226573064b3ad5b2376b9d431b82f9d22d81e2722ff13b734f81a3f16e5977694
SSDEEP

12288:nv6zCmZBiI6kHeUTUVAgDd0AqoU3gQaA0lO:nFmZBiu+UTUSgD2AWYlO

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 30 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	2696	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1336	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2756	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2800	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2980	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2740	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2976	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2372	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2644	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2652	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2604	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2656	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2120	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1028	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2608	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2868	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2924	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2504	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1032	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2908	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1792	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2864	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1912	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	284	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1772	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1548	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3064	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2488	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2480	1728	schtasks.exe	31
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2376	1728	schtasks.exe	31

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/3044-1-0x0000000000240000-0x0000000000316000-memory.dmp	dcrat
behavioral1/files/0x0005000000019278-11.dat	dcrat
behavioral1/memory/2200-29-0x0000000000E70000-0x0000000000F46000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
2200	csrss.exe

Drops file in Program Files directory 11 IoCs

description	ioc	Process
File created	C:\Program Files\Windows NT\TableTextService\6cb0b6c459d5d3	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
File created	C:\Program Files (x86)\Microsoft Analysis Services\wininit.exe	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
File created	C:\Program Files (x86)\Windows NT\Accessories\es-ES\spoolsv.exe	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
File opened for modification	C:\Program Files (x86)\Windows NT\Accessories\es-ES\spoolsv.exe	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
File created	C:\Program Files (x86)\Common Files\lsm.exe	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
File created	C:\Program Files (x86)\Common Files\101b941d020240	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
File created	C:\Program Files\Windows Photo Viewer\fr-FR\explorer.exe	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
File created	C:\Program Files (x86)\Windows NT\Accessories\es-ES\f3b6ecef712a24	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
File created	C:\Program Files\Windows Photo Viewer\fr-FR\7a0fd90576e088	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
File created	C:\Program Files\Windows NT\TableTextService\dwm.exe	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
File created	C:\Program Files (x86)\Microsoft Analysis Services\56085415360792	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.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 30 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2740	schtasks.exe
2976	schtasks.exe
2372	schtasks.exe
2644	schtasks.exe
2864	schtasks.exe
2488	schtasks.exe
2376	schtasks.exe
1912	schtasks.exe
1336	schtasks.exe
1548	schtasks.exe
2480	schtasks.exe
2756	schtasks.exe
2980	schtasks.exe
2924	schtasks.exe
2652	schtasks.exe
2656	schtasks.exe
2120	schtasks.exe
2696	schtasks.exe
2504	schtasks.exe
1772	schtasks.exe
1792	schtasks.exe
2800	schtasks.exe
2604	schtasks.exe
1028	schtasks.exe
2608	schtasks.exe
2868	schtasks.exe
1032	schtasks.exe
2908	schtasks.exe
284	schtasks.exe
3064	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3044	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
3044	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
3044	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
2200	csrss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3044	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
Token: SeDebugPrivilege	2200	csrss.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2200	3044	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe	62
PID 3044 wrote to memory of 2200	3044	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe	62
PID 3044 wrote to memory of 2200	3044	ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe	62

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\ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe
"C:\Users\Admin\AppData\Local\Temp\ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\All Users\Package Cache\{662A0088-6FCD-45DD-9EA7-68674058AED5}v14.30.30704\csrss.exe
  "C:\Users\All Users\Package Cache\{662A0088-6FCD-45DD-9EA7-68674058AED5}v14.30.30704\csrss.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2200

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows NT\Accessories\es-ES\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2696

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\Accessories\es-ES\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1336

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows NT\Accessories\es-ES\spoolsv.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 "lsml" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Common Files\lsm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2800

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2980

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Common Files\lsm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2740

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Users\All Users\Package Cache\{662A0088-6FCD-45DD-9EA7-68674058AED5}v14.30.30704\csrss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2976

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\All Users\Package Cache\{662A0088-6FCD-45DD-9EA7-68674058AED5}v14.30.30704\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2372

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Package Cache\{662A0088-6FCD-45DD-9EA7-68674058AED5}v14.30.30704\csrss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2644

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 5 /tr "'C:\Users\Public\Desktop\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2652

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\Public\Desktop\explorer.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 7 /tr "'C:\Users\Public\Desktop\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2656

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Photo Viewer\fr-FR\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2120

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files\Windows Photo Viewer\fr-FR\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1028

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Photo Viewer\fr-FR\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2608

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\Users\All Users\Templates\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2868

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\All Users\Templates\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2924

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 14 /tr "'C:\Users\All Users\Templates\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2504

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\Microsoft\explorer.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1032

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\All Users\Microsoft\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2908

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 8 /tr "'C:\Users\All Users\Microsoft\explorer.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1792

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WMIADAPW" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\WMIADAP.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2864

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WMIADAP" /sc ONLOGON /tr "'C:\Users\Default User\WMIADAP.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1912

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WMIADAPW" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\WMIADAP.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:284

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows NT\TableTextService\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1548

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Windows NT\TableTextService\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1772

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows NT\TableTextService\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3064

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2488

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Analysis Services\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2480

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2376

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:\Program Files\Windows Photo Viewer\fr-FR\explorer.exe

Filesize
827KB

MD5
3d1284856779580aa24ff1c338c265da

SHA1
2d2e0de25e7c496613bdd59081b54cb18871d582

SHA256
ddc06f933da13bef9bd6f6cbc1d63817671cc34957a4e19f8e5e046bcb4b772f

SHA512
e9c077e5551cb0e37ca0bbd1d9ee3b8f84d2d270924e172eb3ec089feca74d1226573064b3ad5b2376b9d431b82f9d22d81e2722ff13b734f81a3f16e5977694

Download Submit
memory/2200-29-0x0000000000E70000-0x0000000000F46000-memory.dmp

Filesize
856KB

Download
memory/3044-0-0x000007FEF52B3000-0x000007FEF52B4000-memory.dmp

Filesize
4KB

Download
memory/3044-1-0x0000000000240000-0x0000000000316000-memory.dmp

Filesize
856KB

Download
memory/3044-2-0x000007FEF52B0000-0x000007FEF5C9C000-memory.dmp

Filesize
9.9MB

Download
memory/3044-30-0x000007FEF52B0000-0x000007FEF5C9C000-memory.dmp

Filesize
9.9MB

Download