dcrat | bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7

Analysis

max time kernel
150s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-12-2024 03:12

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General

Target

bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
Size

2.4MB
MD5

48b90c11912e9c7147d86c55d1e2cc94
SHA1

ffc71fb727607913aa176c85f75972f1ac6fda7c
SHA256

bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7
SHA512

175b7358de82827ca29ecef204fa2451ba44e3e3fc373f65bc40d2d888d43a5d0bc778a78f714e47369b8d9a5b37faa4106e912bb53b13791714d1c7773431f8
SSDEEP

24576:WCihq6FXaYuCw7sULqPyZwSxIshnWIjm7vZAjX+ez87TkQPI1QOmYNnNQ671:VihHsYIlwSx9WkiLekTk1FN

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

rat

resource	yara_rule
behavioral2/memory/2348-1-0x0000000000770000-0x00000000009E6000-memory.dmp	family_dcrat_v2
behavioral2/files/0x000a000000023b7f-67.dat	family_dcrat_v2

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe

Executes dropped EXE 1 IoCs

pid	Process
2008	SearchApp.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Internet Explorer\ja-JP\OfficeClickToRun.exe	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
File created	C:\Program Files (x86)\Internet Explorer\ja-JP\e6c9b481da804f	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
File created	C:\Program Files\7-Zip\Lang\Idle.exe	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
File created	C:\Program Files\7-Zip\Lang\6ccacd8608530f	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
File created	C:\Program Files\Microsoft Office 15\ClientX64\SppExtComObj.exe	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
File created	C:\Program Files\Microsoft Office 15\ClientX64\e1ef82546f0b02	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\AppReadiness\dllhost.exe	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
File created	C:\Windows\AppReadiness\5940a34987c991	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
File created	C:\Windows\InputMethod\CHS\SearchApp.exe	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
File created	C:\Windows\InputMethod\CHS\38384e6a620884	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
File created	C:\Windows\AppReadiness\dllhost.exe	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1556	PING.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1556	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2008	SearchApp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
Token: SeDebugPrivilege	2008	SearchApp.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 1832	2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe	82
PID 2348 wrote to memory of 1832	2348	bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe	82
PID 1832 wrote to memory of 3632	1832	cmd.exe	84
PID 1832 wrote to memory of 3632	1832	cmd.exe	84
PID 1832 wrote to memory of 1556	1832	cmd.exe	85
PID 1832 wrote to memory of 1556	1832	cmd.exe	85
PID 1832 wrote to memory of 2008	1832	cmd.exe	88
PID 1832 wrote to memory of 2008	1832	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe
"C:\Users\Admin\AppData\Local\Temp\bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Tip2WK7Zqa.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1832
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:3632
- - C:\Windows\system32\PING.EXE
    ping -n 10 localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1556
- - C:\Windows\InputMethod\CHS\SearchApp.exe
    "C:\Windows\InputMethod\CHS\SearchApp.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files\Microsoft Office 15\ClientX64\SppExtComObj.exe

Filesize
2.4MB

MD5
48b90c11912e9c7147d86c55d1e2cc94

SHA1
ffc71fb727607913aa176c85f75972f1ac6fda7c

SHA256
bb0f507a87420a0597cdc40917ea1ba9c9576d3e750db3f9b66802b19550c9e7

SHA512
175b7358de82827ca29ecef204fa2451ba44e3e3fc373f65bc40d2d888d43a5d0bc778a78f714e47369b8d9a5b37faa4106e912bb53b13791714d1c7773431f8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tip2WK7Zqa.bat

Filesize
168B

MD5
62ee9501236a2ae18dabb58f17d700f7

SHA1
82e5d07ddf2183768b9fa6aabad6ccdcfc9f8b1e

SHA256
2b7e69b32c144c0992033b832b1d2ef819b126429a04cc1f479217f4e481d058

SHA512
445d5f235440864e5d4188b3693a8b186de3fe9c4bdca20a15f7c318b68e65053d774f47676a6778540afd6ec2fcfa03c326e94ab87ebe0b3bde652885a65a47

Download Submit
memory/2008-101-0x000000001B4E0000-0x000000001B4E8000-memory.dmp

Filesize
32KB

Download
memory/2348-29-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-75-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-6-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-8-0x0000000001090000-0x000000000109E000-memory.dmp

Filesize
56KB

Download
memory/2348-10-0x00000000012D0000-0x00000000012EC000-memory.dmp

Filesize
112KB

Download
memory/2348-11-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-12-0x000000001B620000-0x000000001B670000-memory.dmp

Filesize
320KB

Download
memory/2348-14-0x00000000012B0000-0x00000000012C0000-memory.dmp

Filesize
64KB

Download
memory/2348-31-0x000000001B670000-0x000000001B680000-memory.dmp

Filesize
64KB

Download
memory/2348-17-0x000000001B6B0000-0x000000001B6C8000-memory.dmp

Filesize
96KB

Download
memory/2348-18-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-20-0x00000000012C0000-0x00000000012D0000-memory.dmp

Filesize
64KB

Download
memory/2348-21-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-23-0x00000000012F0000-0x0000000001300000-memory.dmp

Filesize
64KB

Download
memory/2348-24-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-26-0x000000001B610000-0x000000001B61E000-memory.dmp

Filesize
56KB

Download
memory/2348-28-0x000000001B6D0000-0x000000001B6E2000-memory.dmp

Filesize
72KB

Download
memory/2348-0-0x00007FFF48353000-0x00007FFF48355000-memory.dmp

Filesize
8KB

Download
memory/2348-15-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-5-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-44-0x000000001B7A0000-0x000000001B7FA000-memory.dmp

Filesize
360KB

Download
memory/2348-36-0x000000001BC60000-0x000000001C188000-memory.dmp

Filesize
5.2MB

Download
memory/2348-38-0x000000001B690000-0x000000001B69E000-memory.dmp

Filesize
56KB

Download
memory/2348-40-0x000000001B6A0000-0x000000001B6B0000-memory.dmp

Filesize
64KB

Download
memory/2348-42-0x000000001B730000-0x000000001B740000-memory.dmp

Filesize
64KB

Download
memory/2348-35-0x000000001B710000-0x000000001B722000-memory.dmp

Filesize
72KB

Download
memory/2348-46-0x000000001B740000-0x000000001B74E000-memory.dmp

Filesize
56KB

Download
memory/2348-47-0x00007FFF48353000-0x00007FFF48355000-memory.dmp

Filesize
8KB

Download
memory/2348-49-0x000000001B750000-0x000000001B760000-memory.dmp

Filesize
64KB

Download
memory/2348-52-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-51-0x000000001B760000-0x000000001B76E000-memory.dmp

Filesize
56KB

Download
memory/2348-54-0x000000001B800000-0x000000001B818000-memory.dmp

Filesize
96KB

Download
memory/2348-56-0x000000001B770000-0x000000001B77C000-memory.dmp

Filesize
48KB

Download
memory/2348-58-0x000000001B870000-0x000000001B8BE000-memory.dmp

Filesize
312KB

Download
memory/2348-4-0x000000001B5A0000-0x000000001B5C6000-memory.dmp

Filesize
152KB

Download
memory/2348-2-0x00007FFF48350000-0x00007FFF48E11000-memory.dmp

Filesize
10.8MB

Download
memory/2348-33-0x000000001B6F0000-0x000000001B706000-memory.dmp

Filesize
88KB

Download
memory/2348-1-0x0000000000770000-0x00000000009E6000-memory.dmp

Filesize
2.5MB

Download