Malware Analysis Report

2024-10-10 13:00

Sample ID 240617-k3hggaxgkp
Target dcrat.exe
SHA256 2a9911b83ab4ec159ae9a832daf85d90ce87f67630ebac6edcf3d027f333e784
Tags
dcrat infostealer rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2a9911b83ab4ec159ae9a832daf85d90ce87f67630ebac6edcf3d027f333e784

Threat Level: Known bad

The file dcrat.exe was found to be: Known bad.

Malicious Activity Summary

dcrat infostealer rat

DcRat

DCRat payload

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Modifies registry class

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-17 09:07

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-17 09:07

Reported

2024-06-17 09:09

Platform

win7-20240220-en

Max time kernel

121s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dcrat.exe"

Signatures

DcRat

rat infostealer dcrat

DCRat payload

rat
Description Indicator Process Target
N/A N/A N/A N/A
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\gamensens.exe N/A
N/A N/A C:\chainContainercommon\portCommon.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 behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\chainContainercommon\portCommon.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\chainContainercommon\portCommon.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2852 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\dcrat.exe C:\Users\Admin\AppData\Local\Temp\gamensens.exe
PID 2852 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\dcrat.exe C:\Users\Admin\AppData\Local\Temp\gamensens.exe
PID 2852 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\dcrat.exe C:\Users\Admin\AppData\Local\Temp\gamensens.exe
PID 2852 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\dcrat.exe C:\Users\Admin\AppData\Local\Temp\gamensens.exe
PID 2784 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\gamensens.exe C:\Windows\SysWOW64\WScript.exe
PID 2784 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\gamensens.exe C:\Windows\SysWOW64\WScript.exe
PID 2784 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\gamensens.exe C:\Windows\SysWOW64\WScript.exe
PID 2784 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\gamensens.exe C:\Windows\SysWOW64\WScript.exe
PID 2536 wrote to memory of 2564 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2536 wrote to memory of 2564 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2536 wrote to memory of 2564 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2536 wrote to memory of 2564 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2564 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\chainContainercommon\portCommon.exe
PID 2564 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\chainContainercommon\portCommon.exe
PID 2564 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\chainContainercommon\portCommon.exe
PID 2564 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\chainContainercommon\portCommon.exe

Processes

C:\Users\Admin\AppData\Local\Temp\dcrat.exe

"C:\Users\Admin\AppData\Local\Temp\dcrat.exe"

C:\Users\Admin\AppData\Local\Temp\gamensens.exe

"C:\Users\Admin\AppData\Local\Temp\gamensens.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\chainContainercommon\hyAsInvxuhczEnY.vbe"

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\chainContainercommon\Q0ssMcT3ezpnIpNbD4.bat" "

C:\chainContainercommon\portCommon.exe

"C:\chainContainercommon\portCommon.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 a0987400.xsph.ru udp
RU 141.8.194.149:80 a0987400.xsph.ru tcp
RU 141.8.194.149:80 a0987400.xsph.ru tcp
RU 141.8.194.149:80 a0987400.xsph.ru tcp

Files

memory/2852-0-0x000007FEF5693000-0x000007FEF5694000-memory.dmp

memory/2852-1-0x0000000000DD0000-0x0000000001432000-memory.dmp

memory/2852-2-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\gamensens.exe

MD5 a17bef36ed672305f87c5d4ce04e01ff
SHA1 0c02658f9da0ac19610e6e2779e3e79c3bf0866b
SHA256 6f0d043a76c2703e65275846d206470861c500a9175a75725ca57e1c37a30069
SHA512 a8d1533faac58e86ff470bd0c51bbb48174244608343399d6173ac6ae89e7bfbc060791b549ed3a072b1080a74c5a04c149781c379bacffc7c1a2174cfc6e62f

memory/2852-9-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

C:\chainContainercommon\hyAsInvxuhczEnY.vbe

MD5 e9362622997cc2b8393c002170007268
SHA1 af1ab7de2f514a68b3f5c9b4d6e7365ae81389cf
SHA256 39137e0327e39148e90c60f9d1a53ed28a9968b63f6e475fa4d0d8ef196f3197
SHA512 b92d853982111fdbaebdc01af7292d5a843eac0c4499f62991c9739d2b19da3cc74ffc0bebccbe4bc414d927bf028d8fffe785eefcc467029c408abc2a3170a3

C:\chainContainercommon\Q0ssMcT3ezpnIpNbD4.bat

MD5 607be2f3113847991a86a4eb185e0a9c
SHA1 15fb977abc10846ab794fea18f6e928c29b58574
SHA256 4143d93fefe8e68ad77d7d465d3b4894590c55dd37fd2c2ccb96018543799ae8
SHA512 2848857fc7e48eca77e38c6d5ac32b430f1496a843d857e5f29b3eb5f4af834ef0834046c71f540aba10915d4e5f8103155092db09848f665902c3ce267d54c4

\chainContainercommon\portCommon.exe

MD5 7fdd5e97b846125276affa53ff280c55
SHA1 5e9233ce22752c6ada3c2f6749d9323e03877baf
SHA256 04c030043cd5da98ac97fe3201c53fe5089e6db33de88e7e49dab2c2b74085db
SHA512 cd4b587f418b7a8fccdab90c59ab2bd1bf76d34ba7eb5158a703dbfcea53f04c12782c87664683a82341f61049d50b6f6756b2520b1c0982e602a4a8b49a264c

memory/2620-24-0x0000000000A90000-0x0000000000B66000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-17 09:07

Reported

2024-06-17 09:09

Platform

win10v2004-20240508-en

Max time kernel

42s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dcrat.exe"

Signatures

DcRat

rat infostealer dcrat

DCRat payload

rat
Description Indicator Process Target
N/A N/A N/A N/A
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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\dcrat.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\gamensens.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\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\gamensens.exe N/A
N/A N/A C:\chainContainercommon\portCommon.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\gamensens.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\chainContainercommon\portCommon.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\chainContainercommon\portCommon.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\dcrat.exe

"C:\Users\Admin\AppData\Local\Temp\dcrat.exe"

C:\Users\Admin\AppData\Local\Temp\gamensens.exe

"C:\Users\Admin\AppData\Local\Temp\gamensens.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\chainContainercommon\hyAsInvxuhczEnY.vbe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\chainContainercommon\Q0ssMcT3ezpnIpNbD4.bat" "

C:\chainContainercommon\portCommon.exe

"C:\chainContainercommon\portCommon.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 a0987400.xsph.ru udp
US 8.8.8.8:53 a0987400.xsph.ru udp

Files

memory/1008-0-0x00007FFEC4133000-0x00007FFEC4135000-memory.dmp

memory/1008-1-0x0000000000430000-0x0000000000A92000-memory.dmp

memory/1008-2-0x00007FFEC4130000-0x00007FFEC4BF1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\gamensens.exe

MD5 a17bef36ed672305f87c5d4ce04e01ff
SHA1 0c02658f9da0ac19610e6e2779e3e79c3bf0866b
SHA256 6f0d043a76c2703e65275846d206470861c500a9175a75725ca57e1c37a30069
SHA512 a8d1533faac58e86ff470bd0c51bbb48174244608343399d6173ac6ae89e7bfbc060791b549ed3a072b1080a74c5a04c149781c379bacffc7c1a2174cfc6e62f

memory/1008-12-0x00007FFEC4130000-0x00007FFEC4BF1000-memory.dmp

C:\chainContainercommon\hyAsInvxuhczEnY.vbe

MD5 e9362622997cc2b8393c002170007268
SHA1 af1ab7de2f514a68b3f5c9b4d6e7365ae81389cf
SHA256 39137e0327e39148e90c60f9d1a53ed28a9968b63f6e475fa4d0d8ef196f3197
SHA512 b92d853982111fdbaebdc01af7292d5a843eac0c4499f62991c9739d2b19da3cc74ffc0bebccbe4bc414d927bf028d8fffe785eefcc467029c408abc2a3170a3

C:\chainContainercommon\Q0ssMcT3ezpnIpNbD4.bat

MD5 607be2f3113847991a86a4eb185e0a9c
SHA1 15fb977abc10846ab794fea18f6e928c29b58574
SHA256 4143d93fefe8e68ad77d7d465d3b4894590c55dd37fd2c2ccb96018543799ae8
SHA512 2848857fc7e48eca77e38c6d5ac32b430f1496a843d857e5f29b3eb5f4af834ef0834046c71f540aba10915d4e5f8103155092db09848f665902c3ce267d54c4

C:\chainContainercommon\portCommon.exe

MD5 7fdd5e97b846125276affa53ff280c55
SHA1 5e9233ce22752c6ada3c2f6749d9323e03877baf
SHA256 04c030043cd5da98ac97fe3201c53fe5089e6db33de88e7e49dab2c2b74085db
SHA512 cd4b587f418b7a8fccdab90c59ab2bd1bf76d34ba7eb5158a703dbfcea53f04c12782c87664683a82341f61049d50b6f6756b2520b1c0982e602a4a8b49a264c

memory/4416-26-0x0000000000320000-0x00000000003F6000-memory.dmp