dcrat | c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49

General

Target

c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe
Size

1.1MB
MD5

069709b291d870ca58a522119b531abd
SHA1

24de6a89fab7d1ac294a4a90574e57fd8ad5b4b9
SHA256

c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49
SHA512

d1cbf48ee3005b5cd9245fa604f761f6dc2b2618e9ed091532cb4a0b39fe34ec505edec75935ae3a842bd15c9185e9593be0f78d779c61c38c7d9662d2930806
SSDEEP

24576:fndjUOThRAjCjVBKYHtWBPeeGEP8Z8B+:vXNW8R8A

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 payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

Processes:

resource	yara_rule
behavioral2/memory/4140-132-0x000002A4EDF30000-0x000002A4EE056000-memory.dmp	dcrat
C:\odt\upfc.exe	dcrat
C:\odt\upfc.exe	dcrat

Executes dropped EXE 1 IoCs

Processes:

upfc.exe

pid process

4400 upfc.exe

pid	process
4400	upfc.exe

Drops file in Program Files directory 2 IoCs

Processes:

c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\System\es-ES\RuntimeBroker.exe	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe
File created	C:\Program Files (x86)\Common Files\System\es-ES\9e8d7a4ca61bd92aff00cc37a7a4d62a2cac998d	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.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

4332 schtasks.exe
1868 schtasks.exe
364 schtasks.exe
2580 schtasks.exe
4724 schtasks.exe
2184 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exeupfc.exe

pid process

4140 c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe
4400 upfc.exe

pid	process
4332	schtasks.exe
1868	schtasks.exe
364	schtasks.exe
2580	schtasks.exe
4724	schtasks.exe
2184	schtasks.exe

pid	process
4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe
4400	upfc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exeupfc.exe

description	pid	process
Token: SeDebugPrivilege	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe
Token: SeDebugPrivilege	4400	upfc.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe

description	pid	process	target process
PID 4140 wrote to memory of 4724	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 4724	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 2184	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 2184	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 4332	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 4332	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 1868	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 1868	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 364	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 364	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 2580	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 2580	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	schtasks.exe
PID 4140 wrote to memory of 4400	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	upfc.exe
PID 4140 wrote to memory of 4400	4140	c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe	upfc.exe

C:\Users\Admin\AppData\Local\Temp\c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe
"C:\Users\Admin\AppData\Local\Temp\c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4140

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "SearchApp" /sc ONLOGON /tr "'C:\ProgramData\WindowsHolographicDevices\SpatialStore\SearchApp.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:4724

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "sihost" /sc ONLOGON /tr "'C:\ProgramData\Application Data\sihost.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2184

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\System\es-ES\RuntimeBroker.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:4332

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "dllhost" /sc ONLOGON /tr "'C:\ProgramData\ssh\dllhost.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:1868

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "SearchApp" /sc ONLOGON /tr "'C:\PerfLogs\SearchApp.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:364

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "upfc" /sc ONLOGON /tr "'C:\odt\upfc.exe'" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2580

C:\odt\upfc.exe
"C:\odt\upfc.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4400

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\odt\upfc.exe

Filesize
1.1MB

MD5
069709b291d870ca58a522119b531abd

SHA1
24de6a89fab7d1ac294a4a90574e57fd8ad5b4b9

SHA256
c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49

SHA512
d1cbf48ee3005b5cd9245fa604f761f6dc2b2618e9ed091532cb4a0b39fe34ec505edec75935ae3a842bd15c9185e9593be0f78d779c61c38c7d9662d2930806

Download Submit
C:\odt\upfc.exe

Filesize
1.1MB

MD5
069709b291d870ca58a522119b531abd

SHA1
24de6a89fab7d1ac294a4a90574e57fd8ad5b4b9

SHA256
c26e3a4c520567bfbcbf4e2312932b720822208b84f73e86645748cdb25a0b49

SHA512
d1cbf48ee3005b5cd9245fa604f761f6dc2b2618e9ed091532cb4a0b39fe34ec505edec75935ae3a842bd15c9185e9593be0f78d779c61c38c7d9662d2930806

Download Submit
memory/364-139-0x0000000000000000-mapping.dmp

Download
memory/1868-138-0x0000000000000000-mapping.dmp

Download
memory/2184-136-0x0000000000000000-mapping.dmp

Download
memory/2580-140-0x0000000000000000-mapping.dmp

Download
memory/4140-132-0x000002A4EDF30000-0x000002A4EE056000-memory.dmp

Filesize
1.1MB

Download
memory/4140-134-0x00007FF99C930000-0x00007FF99D3F1000-memory.dmp

Filesize
10.8MB

Download
memory/4140-133-0x00007FF99C930000-0x00007FF99D3F1000-memory.dmp

Filesize
10.8MB

Download
memory/4140-144-0x00007FF99C930000-0x00007FF99D3F1000-memory.dmp

Filesize
10.8MB

Download
memory/4332-137-0x0000000000000000-mapping.dmp

Download
memory/4400-141-0x0000000000000000-mapping.dmp

Download
memory/4400-145-0x00007FF99C930000-0x00007FF99D3F1000-memory.dmp

Filesize
10.8MB

Download
memory/4400-146-0x00007FF99C930000-0x00007FF99D3F1000-memory.dmp

Filesize
10.8MB

Download
memory/4400-147-0x00007FF99C930000-0x00007FF99D3F1000-memory.dmp

Filesize
10.8MB

Download
memory/4724-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads