dcrat | 2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb

General

Target

2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
Size

757KB
MD5

892d94eeae3c0501181abe6f5c07fd11
SHA1

3c4555d758ae1e695436404a5b0b5347447afc96
SHA256

2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb
SHA512

a1c4bcfe4e5118348531ae6c18fdfc3ec3066b193b21c683130b2ea24dc5f9e8bc7212300836af353560eeffbe0a14847e851615d71e0055dced9e455cea359a
SSDEEP

12288:keZM0+7o7YNQxF4WioPJicryGBWECTmvJ52liBXIA5yCJnSr3/35ellbLdV2BQjM:kedfwQ66icoECk52liBXIAMCJnQ3v0lo

Score

10^/10

dcrat infostealer persistence 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 payload 6 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

Processes:

resource	yara_rule
behavioral2/memory/4604-133-0x0000000000340000-0x0000000000748000-memory.dmp	dcrat
behavioral2/memory/4604-134-0x0000000000340000-0x0000000000748000-memory.dmp	dcrat
behavioral2/memory/3364-151-0x00000000005A0000-0x00000000009A8000-memory.dmp	dcrat
behavioral2/memory/4604-152-0x0000000000340000-0x0000000000748000-memory.dmp	dcrat
behavioral2/memory/3364-153-0x00000000005A0000-0x00000000009A8000-memory.dmp	dcrat
behavioral2/memory/3364-155-0x00000000005A0000-0x00000000009A8000-memory.dmp	dcrat

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

3364 svchost.exe

pid	process
3364	svchost.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\PerfLogs\\svchost.exe\""	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Program Files (x86)\\Windows Defender\\svchost.exe\""	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Program Files (x86)\\Windows Sidebar\\Shared Gadgets\\svchost.exe\""	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Program Files (x86)\\Reference Assemblies\\Microsoft\\Framework\\v3.0\\ja\\svchost.exe\""	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Documents and Settings\\svchost.exe\""	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 9 IoCs

Processes:

2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exesvchost.exe

pid	process
4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
3364	svchost.exe
3364	svchost.exe
3364	svchost.exe

Drops file in Program Files directory 7 IoCs

Processes:

2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe

description	ioc	process
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\CMap\svchost.exe	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
File created	C:\Program Files (x86)\Windows Defender\svchost.exe	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
File created	C:\Program Files (x86)\Windows Defender\f4d236fdec2fd03914189c3b26e5cb0dfea9d761	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
File created	C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\svchost.exe	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
File created	C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\f4d236fdec2fd03914189c3b26e5cb0dfea9d761	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\ja\svchost.exe	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\ja\f4d236fdec2fd03914189c3b26e5cb0dfea9d761	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

448 3364 WerFault.exe svchost.exe
Creates scheduled task(s) 1 TTPs 6 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exe

pid process

2296 schtasks.exe
100 schtasks.exe
2588 schtasks.exe
4228 schtasks.exe
4260 schtasks.exe
1612 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exesvchost.exe

pid process

4604 2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
3364 svchost.exe

pid	pid_target	process	target process
448	3364	WerFault.exe	svchost.exe

pid	process
2296	schtasks.exe
100	schtasks.exe
2588	schtasks.exe
4228	schtasks.exe
4260	schtasks.exe
1612	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exesvchost.exe

description	pid	process
Token: SeDebugPrivilege	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
Token: SeDebugPrivilege	3364	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exesvchost.exe

pid process

4604 2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
3364 svchost.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe

description	pid	process	target process
PID 4604 wrote to memory of 4260	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 4260	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 4260	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 1612	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 1612	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 1612	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 2296	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 2296	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 2296	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 100	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 100	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 100	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 2588	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 2588	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 2588	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 4228	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 4228	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 4228	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	schtasks.exe
PID 4604 wrote to memory of 3364	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	svchost.exe
PID 4604 wrote to memory of 3364	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	svchost.exe
PID 4604 wrote to memory of 3364	4604	2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe
"C:\Users\Admin\AppData\Local\Temp\2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb.exe"
1⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4604

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\PerfLogs\svchost.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:4260

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\svchost.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:1612

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\PerfLogs\svchost.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2296

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Sidebar\Shared Gadgets\svchost.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:100

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\ja\svchost.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2588

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "svchost" /sc ONLOGON /tr "'C:\Documents and Settings\svchost.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:4228

C:\Documents and Settings\svchost.exe
"C:\Documents and Settings\svchost.exe"
2⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3364 -s 2088
3⤵
- Program crash
PID:448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 3364 -ip 3364
1⤵
PID:828

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Documents and Settings\svchost.exe
Filesize
757KB

MD5
892d94eeae3c0501181abe6f5c07fd11

SHA1
3c4555d758ae1e695436404a5b0b5347447afc96

SHA256
2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb

SHA512
a1c4bcfe4e5118348531ae6c18fdfc3ec3066b193b21c683130b2ea24dc5f9e8bc7212300836af353560eeffbe0a14847e851615d71e0055dced9e455cea359a

Download Submit
C:\Users\svchost.exe
Filesize
757KB

MD5
892d94eeae3c0501181abe6f5c07fd11

SHA1
3c4555d758ae1e695436404a5b0b5347447afc96

SHA256
2ffa712d8f0bd9a4441047edce9e9f28d88ff15d26513b0cdf1925f6df461ecb

SHA512
a1c4bcfe4e5118348531ae6c18fdfc3ec3066b193b21c683130b2ea24dc5f9e8bc7212300836af353560eeffbe0a14847e851615d71e0055dced9e455cea359a

Download Submit
\??\c:\users\admin\appdata\local\temp\80EB2F5C
Filesize
14B

MD5
0f23365183a767a0103be4db061899f2

SHA1
cf2bfd48c1e347ebf4d5a08f836cbb9bf1731c87

SHA256
f1a9b003ae175bc74e3abf0acb66aad36b2393545f7aa7818b13fa723f0abeb0

SHA512
15546c07d91bf7be33f00efdabd97bdec177f968e66b9c1f8b7c39d6c856fdca74d5867a038ebe30870339e210ea8341b13f6cec1e0d62cc3e2997fa92a74d3e

Download Submit
memory/100-143-0x0000000000000000-mapping.dmp

Download
memory/1612-141-0x0000000000000000-mapping.dmp

Download
memory/2296-142-0x0000000000000000-mapping.dmp

Download
memory/2588-144-0x0000000000000000-mapping.dmp

Download
memory/3364-151-0x00000000005A0000-0x00000000009A8000-memory.dmp

Filesize
4.0MB

Download
memory/3364-146-0x0000000000000000-mapping.dmp

Download
memory/3364-155-0x00000000005A0000-0x00000000009A8000-memory.dmp

Filesize
4.0MB

Download
memory/3364-148-0x00000000005A0000-0x00000000009A8000-memory.dmp

Filesize
4.0MB

Download
memory/3364-154-0x00000000005A0000-0x00000000009A8000-memory.dmp

Filesize
4.0MB

Download
memory/3364-153-0x00000000005A0000-0x00000000009A8000-memory.dmp

Filesize
4.0MB

Download
memory/4228-145-0x0000000000000000-mapping.dmp

Download
memory/4260-140-0x0000000000000000-mapping.dmp

Download
memory/4604-136-0x0000000000340000-0x0000000000748000-memory.dmp

Filesize
4.0MB

Download
memory/4604-138-0x0000000006B00000-0x0000000006B92000-memory.dmp

Filesize
584KB

Download
memory/4604-135-0x00000000063B0000-0x0000000006954000-memory.dmp

Filesize
5.6MB

Download
memory/4604-133-0x0000000000340000-0x0000000000748000-memory.dmp

Filesize
4.0MB

Download
memory/4604-139-0x0000000006BA0000-0x0000000006C3C000-memory.dmp

Filesize
624KB

Download
memory/4604-152-0x0000000000340000-0x0000000000748000-memory.dmp

Filesize
4.0MB

Download
memory/4604-134-0x0000000000340000-0x0000000000748000-memory.dmp

Filesize
4.0MB

Download
memory/4604-132-0x0000000000340000-0x0000000000748000-memory.dmp

Filesize
4.0MB

Download
memory/4604-137-0x0000000003D20000-0x0000000003D86000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads