dcrat | 2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772

General

Target

2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe
Size

315KB
MD5

ec9c92645e4178fda49d0a3aecd70b39
SHA1

ec0c8e353318c041da25c11c4d9cc593519137d8
SHA256

2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772
SHA512

d96c7dfba3094507bd4e9d4ee23ae08c221f011131b2ba7ffa3b97edc0934e4056ebdb6623171bc9b52d77ddd9e34e265ea953cd1547b3c83703aece766c9a8f
SSDEEP

6144:2dsy2oo7KrfynB80ZhrabrFyA/5Txe0M/Lmld4pQdxTbkr9u:2P2N7KKS0ZXA/HF06dx8Z

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	4636	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1604	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	676	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1692	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2776	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4564	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1340	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3228	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3744	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2544	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2744	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1868	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2044	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	932	3548	schtasks.exe	82
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3320	3548	schtasks.exe	82

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/memory/4648-1-0x0000000000EE0000-0x0000000000F36000-memory.dmp	dcrat
behavioral2/files/0x000a000000023b69-11.dat	dcrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe

Executes dropped EXE 1 IoCs

pid	Process
3368	upfc.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Windows Defender\ja-JP\System.exe	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe
File created	C:\Program Files (x86)\Windows Defender\ja-JP\27d1bcfc3c54e0	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000_Classes\Local Settings	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe

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
4564	schtasks.exe
2744	schtasks.exe
4636	schtasks.exe
1604	schtasks.exe
3228	schtasks.exe
3744	schtasks.exe
1692	schtasks.exe
2544	schtasks.exe
932	schtasks.exe
3320	schtasks.exe
676	schtasks.exe
2776	schtasks.exe
1340	schtasks.exe
1868	schtasks.exe
2044	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4648	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe
4648	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe
4648	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe
4648	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe
4648	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe
3368	upfc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4648	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe
Token: SeDebugPrivilege	3368	upfc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 2792	4648	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe	98
PID 4648 wrote to memory of 2792	4648	2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe	98
PID 2792 wrote to memory of 2980	2792	cmd.exe	100
PID 2792 wrote to memory of 2980	2792	cmd.exe	100
PID 2792 wrote to memory of 3368	2792	cmd.exe	101
PID 2792 wrote to memory of 3368	2792	cmd.exe	101

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\2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe
"C:\Users\Admin\AppData\Local\Temp\2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4648
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\28KMo9AaL8.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2980
- - C:\Recovery\WindowsRE\upfc.exe
    "C:\Recovery\WindowsRE\upfc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3368

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4636

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1604

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:676

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows Defender\ja-JP\System.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1692

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\ja-JP\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2776

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Defender\ja-JP\System.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4564

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 9 /tr "'C:\Users\Default\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1340

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\Default\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3228

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\Users\Default\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3744

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\upfc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2544

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2744

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\upfc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1868

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2044

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:932

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3320

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Recovery\WindowsRE\RuntimeBroker.exe

Filesize
315KB

MD5
ec9c92645e4178fda49d0a3aecd70b39

SHA1
ec0c8e353318c041da25c11c4d9cc593519137d8

SHA256
2c1c9222242148483befec88bb981d11b1736abe489f0005bd3a3d921329b772

SHA512
d96c7dfba3094507bd4e9d4ee23ae08c221f011131b2ba7ffa3b97edc0934e4056ebdb6623171bc9b52d77ddd9e34e265ea953cd1547b3c83703aece766c9a8f

Download Submit
C:\Users\Admin\AppData\Local\Temp\28KMo9AaL8.bat

Filesize
195B

MD5
e01055f2090b00ac8b15c1ee311313f5

SHA1
c9e5fa16e7b82540d534b950a5c15e1ba4ec0c48

SHA256
d212a9eaa3878a05b6c5a7b245191a25667ab827de83a5f4c6d81a1a56280973

SHA512
481b79e19fea6fbdb84b97b9341608ebd893fff176ab993f3e07cb9dd01221e3142bed4bd84494c2577e137b319c476e0551ec47ab545a3cfbdc60a87035e1bd

Download Submit
memory/4648-0-0x00007FFF6B503000-0x00007FFF6B505000-memory.dmp

Filesize
8KB

Download
memory/4648-1-0x0000000000EE0000-0x0000000000F36000-memory.dmp

Filesize
344KB

Download
memory/4648-4-0x00007FFF6B500000-0x00007FFF6BFC1000-memory.dmp

Filesize
10.8MB

Download
memory/4648-18-0x00007FFF6B500000-0x00007FFF6BFC1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads