Analysis Overview
SHA256
674890622d7bb92cedd72f8761121f9b8eccfe4a45f2967babb7d06538342d88
Threat Level: Known bad
The file 45eac1c5ac04d5ba311c04776b5bebc0N.exe was found to be: Known bad.
Malicious Activity Summary
DcRat
Dcrat family
DCRat payload
DCRat payload
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Modifies registry class
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-16 01:28
Signatures
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Dcrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-16 01:28
Reported
2024-07-16 01:30
Platform
win7-20240705-en
Max time kernel
15s
Max time network
16s
Command Line
Signatures
DcRat
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\45eac1c5ac04d5ba311c04776b5bebc0N.exe
"C:\Users\Admin\AppData\Local\Temp\45eac1c5ac04d5ba311c04776b5bebc0N.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\MhPwnfHbKz5.vbe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\XtSXWV19jrk1A2PG.bat" "
C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe
"C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe"
Network
Files
C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\MhPwnfHbKz5.vbe
| MD5 | 0e20d4e8786aa76909466fc802d1ec9b |
| SHA1 | fd4e43eb82dd2228b1c220ccf21a2d6b735d67b6 |
| SHA256 | af286e412106b4fed822ea0cbb52e7dcdf06238329e5625dce175588998fc0fb |
| SHA512 | ee73e7c1cc08c32704901e9db362d81464976f37c63a6a3e72f620a7d6bd745e21a229aa04766e1b595b4406bb7da9ce0e5867472f380c3c75c612b119b914ce |
C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\XtSXWV19jrk1A2PG.bat
| MD5 | 841307750510e536ecc5f7bcc2dc04c5 |
| SHA1 | 23f78f1f5e21f8a9222245587ff1a0e7f49c1905 |
| SHA256 | 3b76b5aa6ef4298fcaea871bb9b88ed5f5ecd0cda2ada2b3090a80093f1cbec3 |
| SHA512 | 7fed4e9330a13730941c396ebdda4190c92cda5709c4c525f9528490ba1d76a5fa34898effa7b160ecb8d954a168e2a31ced2f534510621eea4b65386968af6b |
C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe
| MD5 | f8385279d93481e8ede6ec2312460ce4 |
| SHA1 | 2c0b4e141fe7495653b427426dc246876fa27af9 |
| SHA256 | 1bdd11bfd1776b34adb78baebcd5a894fbe1f2bd1c8e0dbd2123eaf443ea7bdc |
| SHA512 | bc3ce19a5ee1a906427f15e7de22495c76a25dca04e17fc48db7629d2be51b5fb16c024c064bcf58d2a924b0df4d6a9b0d28846c06b9239acfea83fc6eb11705 |
memory/920-13-0x00000000013D0000-0x0000000001520000-memory.dmp
memory/920-14-0x0000000000240000-0x000000000024E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-16 01:28
Reported
2024-07-16 01:30
Platform
win10v2004-20240709-en
Max time kernel
94s
Max time network
95s
Command Line
Signatures
DcRat
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\45eac1c5ac04d5ba311c04776b5bebc0N.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\45eac1c5ac04d5ba311c04776b5bebc0N.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3028 wrote to memory of 60 | N/A | C:\Users\Admin\AppData\Local\Temp\45eac1c5ac04d5ba311c04776b5bebc0N.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 3028 wrote to memory of 60 | N/A | C:\Users\Admin\AppData\Local\Temp\45eac1c5ac04d5ba311c04776b5bebc0N.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 3028 wrote to memory of 60 | N/A | C:\Users\Admin\AppData\Local\Temp\45eac1c5ac04d5ba311c04776b5bebc0N.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 60 wrote to memory of 3428 | N/A | C:\Windows\SysWOW64\WScript.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 60 wrote to memory of 3428 | N/A | C:\Windows\SysWOW64\WScript.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 60 wrote to memory of 3428 | N/A | C:\Windows\SysWOW64\WScript.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3428 wrote to memory of 740 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe |
| PID 3428 wrote to memory of 740 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\45eac1c5ac04d5ba311c04776b5bebc0N.exe
"C:\Users\Admin\AppData\Local\Temp\45eac1c5ac04d5ba311c04776b5bebc0N.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\MhPwnfHbKz5.vbe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\XtSXWV19jrk1A2PG.bat" "
C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe
"C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\MhPwnfHbKz5.vbe
| MD5 | 0e20d4e8786aa76909466fc802d1ec9b |
| SHA1 | fd4e43eb82dd2228b1c220ccf21a2d6b735d67b6 |
| SHA256 | af286e412106b4fed822ea0cbb52e7dcdf06238329e5625dce175588998fc0fb |
| SHA512 | ee73e7c1cc08c32704901e9db362d81464976f37c63a6a3e72f620a7d6bd745e21a229aa04766e1b595b4406bb7da9ce0e5867472f380c3c75c612b119b914ce |
C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\XtSXWV19jrk1A2PG.bat
| MD5 | 841307750510e536ecc5f7bcc2dc04c5 |
| SHA1 | 23f78f1f5e21f8a9222245587ff1a0e7f49c1905 |
| SHA256 | 3b76b5aa6ef4298fcaea871bb9b88ed5f5ecd0cda2ada2b3090a80093f1cbec3 |
| SHA512 | 7fed4e9330a13730941c396ebdda4190c92cda5709c4c525f9528490ba1d76a5fa34898effa7b160ecb8d954a168e2a31ced2f534510621eea4b65386968af6b |
C:\Users\Admin\AppData\Local\Temp\browserrefCrtsvc\ChainSaves.exe
| MD5 | f8385279d93481e8ede6ec2312460ce4 |
| SHA1 | 2c0b4e141fe7495653b427426dc246876fa27af9 |
| SHA256 | 1bdd11bfd1776b34adb78baebcd5a894fbe1f2bd1c8e0dbd2123eaf443ea7bdc |
| SHA512 | bc3ce19a5ee1a906427f15e7de22495c76a25dca04e17fc48db7629d2be51b5fb16c024c064bcf58d2a924b0df4d6a9b0d28846c06b9239acfea83fc6eb11705 |
memory/740-12-0x00007FFB2CBD3000-0x00007FFB2CBD5000-memory.dmp
memory/740-13-0x0000000000380000-0x00000000004D0000-memory.dmp
memory/740-14-0x00000000026F0000-0x00000000026FE000-memory.dmp