dcrat | b665d95a5937bfe91d3519e449155f167318ef349ddc2a51b216353cbc5b1c20

General

Target

FortniteCheeto1.1.exe
Size

1.9MB
MD5

c45c467e8f19f30607d53008089f3cf3
SHA1

1adb8f8fe7fd4ea27a15b078b6689f02af232ccf
SHA256

b665d95a5937bfe91d3519e449155f167318ef349ddc2a51b216353cbc5b1c20
SHA512

a7b8ba1abc5f4c06a21f73f236721f384aaaa843005d30e4eefdd5707bb16774f9ca8fac4e8d93219d83627a192256f34c5bc287419480813cb86ad3465b9ff5
SSDEEP

49152:jbA3wn9R0GVO1ZNksxh3TsRs+6dZdOk7KEE:jbD9RDmhYRsZgk7O

Score

10^/10

dcrat discovery 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

DCRat payload 2 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral2/files/0x000a000000023b68-14.dat	dcrat
behavioral2/memory/3864-17-0x0000000000B30000-0x0000000000CCA000-memory.dmp	dcrat

Checks computer location settings 2 TTPs 2 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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	FortniteCheeto1.1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
3864	runtimeCommon.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FortniteCheeto1.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings	FortniteCheeto1.1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3864	runtimeCommon.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 2180	2992	FortniteCheeto1.1.exe	84
PID 2992 wrote to memory of 2180	2992	FortniteCheeto1.1.exe	84
PID 2992 wrote to memory of 2180	2992	FortniteCheeto1.1.exe	84
PID 2992 wrote to memory of 1888	2992	FortniteCheeto1.1.exe	86
PID 2992 wrote to memory of 1888	2992	FortniteCheeto1.1.exe	86
PID 2992 wrote to memory of 1888	2992	FortniteCheeto1.1.exe	86
PID 2180 wrote to memory of 4676	2180	WScript.exe	94
PID 2180 wrote to memory of 4676	2180	WScript.exe	94
PID 2180 wrote to memory of 4676	2180	WScript.exe	94
PID 4676 wrote to memory of 3864	4676	cmd.exe	96
PID 4676 wrote to memory of 3864	4676	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\FortniteCheeto1.1.exe
"C:\Users\Admin\AppData\Local\Temp\FortniteCheeto1.1.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\DriverRefNetdhcp\1wa1BUh.vbe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2180
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\DriverRefNetdhcp\BBAqvAKWKrWt.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4676
  - - C:\Users\Admin\AppData\Roaming\DriverRefNetdhcp\runtimeCommon.exe
      "C:\Users\Admin\AppData\Roaming\DriverRefNetdhcp\runtimeCommon.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:3864
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\DriverRefNetdhcp\file.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\DriverRefNetdhcp\1wa1BUh.vbe

Filesize
212B

MD5
8aaf65e9a4b184cc61fc117355e48a61

SHA1
0ba44f4ce530344eacd0b01722e1aa0ade006746

SHA256
da33a2cec81c558c778bed1b1bd7d4caf6e9ea48eacf583fa937ee313211ea73

SHA512
c4dbd6b9cd62ac26d1448686fa31ff1d0974fcd18c771d8e46eff8e9aef4d1f381192273bcd45a6d5839d8e7a2e02f531f8d34785d576854f691a1d514cfd85b

Download Submit
C:\Users\Admin\AppData\Roaming\DriverRefNetdhcp\BBAqvAKWKrWt.bat

Filesize
46B

MD5
5e0bc3d4dd27ad8c6f85acc90bcfa735

SHA1
d7980e7faeb79ac69da52c808d652050982d77ab

SHA256
cb211cb3ef76b929b4fc9f53eae8308706c93e692fdc74642eff5420b9a45d54

SHA512
f0d89447947a86167d63b5b6a8908893700490f85c4a7700ed96bcbf55ef851720e38512b85338dd10a55b9326ae0d5ff48177466a87167b029c87a4ef196b7f

Download Submit
C:\Users\Admin\AppData\Roaming\DriverRefNetdhcp\file.vbs

Filesize
34B

MD5
677cc4360477c72cb0ce00406a949c61

SHA1
b679e8c3427f6c5fc47c8ac46cd0e56c9424de05

SHA256
f1cccb5ae4aa51d293bd3c7d2a1a04cb7847d22c5db8e05ac64e9a6d7455aa0b

SHA512
7cfe2cc92f9e659f0a15a295624d611b3363bd01eb5bcf9bc7681ea9b70b0564d192d570d294657c8dc2c93497fa3b4526c975a9bf35d69617c31d9936573c6a

Download Submit
C:\Users\Admin\AppData\Roaming\DriverRefNetdhcp\runtimeCommon.exe

Filesize
1.6MB

MD5
84bf077031e73a69872de07165984eb2

SHA1
271b1eef1fb981127b0bb2f76a57a0d39660dfe1

SHA256
d53b2b40551489366ffaeb04010273d93d0426354e61305bb9b6eb0e4c0be7ad

SHA512
10c2fa39ff50c6d82a03c348be97d8862e39215c35b13575cec91efe5a3f3bcd07d7051d43b21ec8769dbb0157662cc7506e7b18ec9b8aef1866aea1def4b73b

Download Submit
memory/3864-17-0x0000000000B30000-0x0000000000CCA000-memory.dmp

Filesize
1.6MB

Download
memory/3864-18-0x0000000002DD0000-0x0000000002DDE000-memory.dmp

Filesize
56KB

Download

Analysis

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