Malware Analysis Report

2024-10-19 07:09

Sample ID 240207-rcr2jsaebp
Target 5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f
SHA256 5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f
Tags
darkcloud stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f

Threat Level: Known bad

The file 5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f was found to be: Known bad.

Malicious Activity Summary

darkcloud stealer

DarkCloud

Drops startup file

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-02-07 14:03

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-07 14:03

Reported

2024-02-07 14:06

Platform

win10v2004-20231215-en

Max time kernel

142s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe"

Signatures

DarkCloud

stealer darkcloud

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1784 set thread context of 3304 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1784 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 1784 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 1784 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 1784 wrote to memory of 3304 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1784 wrote to memory of 3304 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1784 wrote to memory of 3304 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1784 wrote to memory of 3304 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1784 wrote to memory of 3304 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1784 wrote to memory of 3304 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1784 wrote to memory of 3304 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1784 wrote to memory of 3304 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe

"C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe

"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 178.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/1784-0-0x0000000000410000-0x00000000004C6000-memory.dmp

memory/1784-1-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/1784-3-0x0000000004EB0000-0x0000000004EC0000-memory.dmp

memory/1784-5-0x0000000005000000-0x0000000005092000-memory.dmp

memory/1784-6-0x0000000005140000-0x00000000051DC000-memory.dmp

memory/2212-7-0x00000000052C0000-0x00000000052F6000-memory.dmp

memory/2212-10-0x00000000053F0000-0x0000000005400000-memory.dmp

memory/2212-12-0x00000000061D0000-0x0000000006236000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dtoja2ki.ch2.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2212-23-0x00000000062B0000-0x0000000006604000-memory.dmp

memory/2212-13-0x0000000006240000-0x00000000062A6000-memory.dmp

memory/2212-11-0x00000000058E0000-0x0000000005902000-memory.dmp

memory/2212-24-0x0000000006890000-0x00000000068AE000-memory.dmp

memory/2212-25-0x0000000006D50000-0x0000000006D9C000-memory.dmp

memory/2212-9-0x0000000005A30000-0x0000000006058000-memory.dmp

memory/2212-8-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/1784-4-0x0000000005510000-0x0000000005AB4000-memory.dmp

memory/1784-2-0x0000000004EC0000-0x0000000004F62000-memory.dmp

memory/2212-30-0x0000000007870000-0x0000000007906000-memory.dmp

memory/3304-31-0x0000000000400000-0x000000000046E000-memory.dmp

memory/2212-34-0x0000000006E10000-0x0000000006E32000-memory.dmp

memory/2212-32-0x0000000006DA0000-0x0000000006DBA000-memory.dmp

memory/2212-40-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/1784-33-0x0000000075260000-0x0000000075A10000-memory.dmp

memory/3304-27-0x0000000000400000-0x000000000046E000-memory.dmp

memory/1784-26-0x0000000004FA0000-0x0000000004FA8000-memory.dmp

memory/3304-41-0x0000000000400000-0x000000000046E000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-07 14:03

Reported

2024-02-07 14:06

Platform

win7-20231215-en

Max time kernel

143s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe"

Signatures

DarkCloud

stealer darkcloud

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1812 set thread context of 2824 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1812 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 1812 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 1812 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 1812 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
PID 1812 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1812 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1812 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1812 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1812 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1812 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1812 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1812 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 1812 wrote to memory of 2824 N/A C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe

"C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe

"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\5ecbfb33b1adf9c70b5f79f15f78b4672bb458c1bde52985e4dd7ba6c046465f.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"

Network

N/A

Files

memory/1812-0-0x00000000008F0000-0x00000000009A6000-memory.dmp

memory/1812-1-0x00000000745D0000-0x0000000074CBE000-memory.dmp

memory/1812-3-0x00000000048D0000-0x0000000004910000-memory.dmp

memory/1812-2-0x0000000004780000-0x0000000004822000-memory.dmp

memory/2312-6-0x000000006FCF0000-0x000000007029B000-memory.dmp

memory/2312-7-0x000000006FCF0000-0x000000007029B000-memory.dmp

memory/2312-8-0x00000000025C0000-0x0000000002600000-memory.dmp

memory/2312-9-0x00000000025C0000-0x0000000002600000-memory.dmp

memory/1812-10-0x0000000000590000-0x0000000000598000-memory.dmp

memory/2824-13-0x0000000000400000-0x000000000046E000-memory.dmp

memory/2824-11-0x0000000000400000-0x000000000046E000-memory.dmp

memory/2824-15-0x0000000000400000-0x000000000046E000-memory.dmp

memory/2824-19-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2824-23-0x0000000000400000-0x000000000046E000-memory.dmp

memory/1812-22-0x00000000745D0000-0x0000000074CBE000-memory.dmp

memory/2824-20-0x0000000000400000-0x000000000046E000-memory.dmp

memory/2312-27-0x000000006FCF0000-0x000000007029B000-memory.dmp

memory/2824-28-0x0000000000400000-0x000000000046E000-memory.dmp