dcrat | 69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7

General

Target

69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
Size

828KB
MD5

c6b30f794dcf67851d13e3335ef57088
SHA1

e97b575fc270d97d1e2df38291fd44dc70ff95ab
SHA256

69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7
SHA512

28dc37c57408fa9e6e3a14a99d602e6c0f937e259f21eefd016424d03d40066e6b518c9b0bcbae8039c1691ce43ba8803c568ad69df163938e4ff2235c55188b
SSDEEP

12288:K5jHYVjmobNqsKDsSvjbHQVtVZJizDxRxhDsGALvbI6bnY6a2Xuk:1b4sKDZUZJuR/ALvbLnY8Xuk

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 15 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	2900	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1164	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1956	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2800	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2828	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2760	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2976	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2332	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2824	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2776	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2768	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2604	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2636	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1976	2388	schtasks.exe	30
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2272	2388	schtasks.exe	30

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/memory/1992-1-0x0000000000F90000-0x0000000001066000-memory.dmp	dcrat
behavioral1/files/0x0006000000017409-11.dat	dcrat
behavioral1/memory/2912-21-0x0000000001220000-0x00000000012F6000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

pid	Process
2912	wininit.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files\Windows Sidebar\ja-JP\wininit.exe	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
File opened for modification	C:\Program Files\Windows Sidebar\ja-JP\wininit.exe	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
File created	C:\Program Files\Windows Sidebar\ja-JP\56085415360792	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File created	C:\Windows\PLA\System\69ddcba757bf72	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
File created	C:\Windows\Migration\smss.exe	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
File created	C:\Windows\Migration\69ddcba757bf72	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
File created	C:\Windows\RemotePackages\RemoteApps\smss.exe	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
File created	C:\Windows\RemotePackages\RemoteApps\69ddcba757bf72	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
File created	C:\Windows\PLA\System\smss.exe	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.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 15 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2760	schtasks.exe
2332	schtasks.exe
1956	schtasks.exe
1976	schtasks.exe
2272	schtasks.exe
2604	schtasks.exe
2636	schtasks.exe
2900	schtasks.exe
1164	schtasks.exe
2828	schtasks.exe
2768	schtasks.exe
2800	schtasks.exe
2976	schtasks.exe
2824	schtasks.exe
2776	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1992	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
2912	wininit.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
Token: SeDebugPrivilege	2912	wininit.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 2364	1992	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe	46
PID 1992 wrote to memory of 2364	1992	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe	46
PID 1992 wrote to memory of 2364	1992	69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe	46
PID 2364 wrote to memory of 1728	2364	cmd.exe	48
PID 2364 wrote to memory of 1728	2364	cmd.exe	48
PID 2364 wrote to memory of 1728	2364	cmd.exe	48
PID 2364 wrote to memory of 2912	2364	cmd.exe	49
PID 2364 wrote to memory of 2912	2364	cmd.exe	49
PID 2364 wrote to memory of 2912	2364	cmd.exe	49

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\69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.exe
"C:\Users\Admin\AppData\Local\Temp\69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7.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:1992
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\CyxGcg3L6d.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2364
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:1728
- - C:\Program Files\Windows Sidebar\ja-JP\wininit.exe
    "C:\Program Files\Windows Sidebar\ja-JP\wininit.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2912

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Sidebar\ja-JP\wininit.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2900

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\ja-JP\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1164

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Sidebar\ja-JP\wininit.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1956

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Windows\RemotePackages\RemoteApps\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2800

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\RemotePackages\RemoteApps\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2828

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Windows\RemotePackages\RemoteApps\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2760

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 9 /tr "'C:\Windows\PLA\System\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2976

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\PLA\System\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2332

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 8 /tr "'C:\Windows\PLA\System\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2824

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 7 /tr "'C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2776

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2768

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 7 /tr "'C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\System.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 "smsss" /sc MINUTE /mo 12 /tr "'C:\Windows\Migration\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2636

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\Migration\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1976

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 6 /tr "'C:\Windows\Migration\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2272

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\CyxGcg3L6d.bat

Filesize
215B

MD5
6efc3e111bdabdc6c2fd4d696fd2458a

SHA1
7ba1e3c7b2265c3deb0f865c2a50e01f4ede08a5

SHA256
41182c86e044ae7ecc0bae97b214ba96661f473c0468852bd44c72c4c869a617

SHA512
aea032b99602f34656511e2783e88dc5dd0482bee278f647bf670fc1dedae367873b5c25f2a8795d6e3275a1ccd2d379a0f2ce9b1a75cd901f77296bc61d713d

Download Submit
C:\Windows\Migration\smss.exe

Filesize
828KB

MD5
c6b30f794dcf67851d13e3335ef57088

SHA1
e97b575fc270d97d1e2df38291fd44dc70ff95ab

SHA256
69ff8a0bc37e646c87c138131da225d134464a806fea55d265ee5813756340d7

SHA512
28dc37c57408fa9e6e3a14a99d602e6c0f937e259f21eefd016424d03d40066e6b518c9b0bcbae8039c1691ce43ba8803c568ad69df163938e4ff2235c55188b

Download Submit
memory/1992-0-0x000007FEF5283000-0x000007FEF5284000-memory.dmp

Filesize
4KB

Download
memory/1992-1-0x0000000000F90000-0x0000000001066000-memory.dmp

Filesize
856KB

Download
memory/1992-2-0x000007FEF5280000-0x000007FEF5C6C000-memory.dmp

Filesize
9.9MB

Download
memory/1992-17-0x000007FEF5280000-0x000007FEF5C6C000-memory.dmp

Filesize
9.9MB

Download
memory/2912-21-0x0000000001220000-0x00000000012F6000-memory.dmp

Filesize
856KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads