dcrat | 7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974

General

Target

7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe
Size

3.5MB
MD5

04633b59c759e0f91a19848c453dc473
SHA1

3f7e45be68ba6c2b63d3088796e98c22f21e6b30
SHA256

7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974
SHA512

df6424b56e29747cb2890a0e8f2edd356b1c4fba87d7e9d3db933489ca97ff6376fcfd31cf7e230dde642c228116681e69c12c80912037d554390f7a4af0871f
SSDEEP

49152:F5IywAyfWfCxirbVGaVNmvVQdMeanKKmgzPSjhXoU72qh5YcPb1VXtBG+JUZq5Q5:FaywdWfxbVfEadMJKCz+Rf3Pb6AkNdk

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 9 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

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

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2348	1036	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	548	1036	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1692	1036	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	5096	1036	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1840	1036	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2840	1036	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2560	1036	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3324	1036	schtasks.exe	85
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4420	1036	schtasks.exe	85

DCRat payload 1 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

Processes:

resource	yara_rule
behavioral2/files/0x000a000000023bb1-31.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

Processes:

7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe

Executes dropped EXE 1 IoCs

Processes:

RuntimeBroker.exe

pid	Process
408	RuntimeBroker.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

Processes:

flow	ioc
30	pastebin.com
29	pastebin.com

Drops file in Program Files directory 7 IoCs

Processes:

7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\Adobe\Acrobat\unsecapp.exe	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe
File opened for modification	C:\Program Files (x86)\Common Files\Adobe\Acrobat\unsecapp.exe	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe
File created	C:\Program Files (x86)\Common Files\Adobe\Acrobat\29c1c3cc0f7685	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe
File created	C:\Program Files (x86)\Windows Sidebar\Gadgets\RuntimeBroker.exe	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe
File created	C:\Program Files (x86)\Windows Sidebar\Gadgets\9e8d7a4ca61bd9	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe
File created	C:\Program Files\Windows Portable Devices\sihost.exe	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe
File created	C:\Program Files\Windows Portable Devices\66fc9ff0ee96c2	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.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

Processes:

7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 9 IoCs

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

persistence execution

Scheduled Task

T1053.005

Processes:

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

pid	Process
2560	schtasks.exe
3324	schtasks.exe
2348	schtasks.exe
1692	schtasks.exe
5096	schtasks.exe
2840	schtasks.exe
548	schtasks.exe
1840	schtasks.exe
4420	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exeRuntimeBroker.exe

pid	Process
4260	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe
408	RuntimeBroker.exe
408	RuntimeBroker.exe
408	RuntimeBroker.exe
408	RuntimeBroker.exe
408	RuntimeBroker.exe
408	RuntimeBroker.exe
408	RuntimeBroker.exe
408	RuntimeBroker.exe
408	RuntimeBroker.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RuntimeBroker.exe

pid	Process
408	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exeRuntimeBroker.exe

description	pid	Process
Token: SeDebugPrivilege	4260	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe
Token: SeDebugPrivilege	408	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.execmd.exe

description	pid	Process	procid_target
PID 4260 wrote to memory of 3524	4260	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe	96
PID 4260 wrote to memory of 3524	4260	7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe	96
PID 3524 wrote to memory of 2252	3524	cmd.exe	98
PID 3524 wrote to memory of 2252	3524	cmd.exe	98
PID 3524 wrote to memory of 408	3524	cmd.exe	105
PID 3524 wrote to memory of 408	3524	cmd.exe	105

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\7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.exe
"C:\Users\Admin\AppData\Local\Temp\7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974.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:4260
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\mCxoCI6GGO.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3524
- - C:\Windows\system32\w32tm.exe
    w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
    3⤵
    PID:2252
- - C:\Program Files (x86)\Windows Sidebar\Gadgets\RuntimeBroker.exe
    "C:\Program Files (x86)\Windows Sidebar\Gadgets\RuntimeBroker.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:408

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Common Files\Adobe\Acrobat\unsecapp.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2348

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\Adobe\Acrobat\unsecapp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:548

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Common Files\Adobe\Acrobat\unsecapp.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1692

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Sidebar\Gadgets\RuntimeBroker.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5096

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Sidebar\Gadgets\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1840

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Sidebar\Gadgets\RuntimeBroker.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2840

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Portable Devices\sihost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2560

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\sihost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3324

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Portable Devices\sihost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4420

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

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Windows Sidebar\Gadgets\RuntimeBroker.exe

Filesize
3.5MB

MD5
04633b59c759e0f91a19848c453dc473

SHA1
3f7e45be68ba6c2b63d3088796e98c22f21e6b30

SHA256
7d1742827128bccb907f2da5ebfe80621f2a3356162635ee26798d275ff74974

SHA512
df6424b56e29747cb2890a0e8f2edd356b1c4fba87d7e9d3db933489ca97ff6376fcfd31cf7e230dde642c228116681e69c12c80912037d554390f7a4af0871f

Download Submit
C:\Users\Admin\AppData\Local\Temp\mCxoCI6GGO.bat

Filesize
229B

MD5
4ccfcbcf5f06d7dd66773392cefa8020

SHA1
ad0d423ea392034eac266ecf40de53822e2b0945

SHA256
aecb9f39b95462d69732e5c5215b471f153acb9e6e0575fc71eeec3ec740b1fa

SHA512
fe3b9b02c0feb38a2818c3aff69b22ac9817c9867a2f7f5f0f30c659db6fdca61f396b82b4b9187b21ba9c99b4e664a776da6a10a185b10ab56d37eba6eb7b48

Download Submit
memory/408-33-0x000000001D510000-0x000000001D556000-memory.dmp

Filesize
280KB

Download
memory/408-32-0x000000001E4A0000-0x000000001E662000-memory.dmp

Filesize
1.8MB

Download
memory/4260-10-0x000000001C010000-0x000000001C538000-memory.dmp

Filesize
5.2MB

Download
memory/4260-14-0x000000001BD10000-0x000000001BD18000-memory.dmp

Filesize
32KB

Download
memory/4260-7-0x000000001BA90000-0x000000001BAE6000-memory.dmp

Filesize
344KB

Download
memory/4260-5-0x000000001BA40000-0x000000001BA90000-memory.dmp

Filesize
320KB

Download
memory/4260-9-0x000000001BA10000-0x000000001BA22000-memory.dmp

Filesize
72KB

Download
memory/4260-8-0x000000001B2B0000-0x000000001B2BC000-memory.dmp

Filesize
48KB

Download
memory/4260-0-0x00007FF9FF643000-0x00007FF9FF645000-memory.dmp

Filesize
8KB

Download
memory/4260-11-0x000000001BB30000-0x000000001BB3E000-memory.dmp

Filesize
56KB

Download
memory/4260-12-0x000000001BB40000-0x000000001BB4E000-memory.dmp

Filesize
56KB

Download
memory/4260-6-0x000000001B9F0000-0x000000001BA06000-memory.dmp

Filesize
88KB

Download
memory/4260-15-0x000000001BD20000-0x000000001BD2C000-memory.dmp

Filesize
48KB

Download
memory/4260-13-0x000000001BB50000-0x000000001BB58000-memory.dmp

Filesize
32KB

Download
memory/4260-4-0x000000001B9D0000-0x000000001B9EC000-memory.dmp

Filesize
112KB

Download
memory/4260-28-0x00007FF9FF640000-0x00007FFA00101000-memory.dmp

Filesize
10.8MB

Download
memory/4260-3-0x000000001B2A0000-0x000000001B2AE000-memory.dmp

Filesize
56KB

Download
memory/4260-2-0x00007FF9FF640000-0x00007FFA00101000-memory.dmp

Filesize
10.8MB

Download
memory/4260-1-0x0000000000410000-0x000000000079A000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads