Malware Analysis Report

2025-01-02 03:28

Sample ID 240723-l6fmqa1dkm
Target MalwareBazaar.7
SHA256 2768689f6c4a60b7fe18d6c87fdecd8a7f8dceefa298a5851c4a7c6909f3a92d
Tags
remcos 5764576 execution 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

2768689f6c4a60b7fe18d6c87fdecd8a7f8dceefa298a5851c4a7c6909f3a92d

Threat Level: Known bad

The file MalwareBazaar.7 was found to be: Known bad.

Malicious Activity Summary

remcos 5764576 execution rat

Remcos

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Scheduled Task/Job: Scheduled Task

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-23 10:08

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-23 10:08

Reported

2024-07-23 10:11

Platform

win7-20240704-en

Max time kernel

148s

Max time network

152s

Command Line

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

Signatures

Remcos

rat remcos

Command and Scripting Interpreter: PowerShell

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1932 set thread context of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

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 WriteProcessMemory

Description Indicator Process Target
PID 1932 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1932 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1932 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1932 wrote to memory of 2848 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1932 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\schtasks.exe
PID 1932 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\schtasks.exe
PID 1932 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\schtasks.exe
PID 1932 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\schtasks.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 1932 wrote to memory of 2892 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe

Processes

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

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

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TlykqEvmBV.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TlykqEvmBV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE012.tmp"

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

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

Network

Country Destination Domain Proto
SG 172.93.218.178:45667 tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/1932-0-0x000000007425E000-0x000000007425F000-memory.dmp

memory/1932-1-0x0000000000DB0000-0x0000000000E98000-memory.dmp

memory/1932-2-0x0000000074250000-0x000000007493E000-memory.dmp

memory/1932-3-0x0000000000430000-0x000000000044A000-memory.dmp

memory/1932-4-0x00000000004F0000-0x00000000004FE000-memory.dmp

memory/1932-5-0x0000000005190000-0x000000000524E000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpE012.tmp

MD5 f411698f5f7fd614de3e0d56b035ccd7
SHA1 acd2f876d1ab918ed765f0268711dff7162ad8b7
SHA256 65125d36b8e1bf80e5570cf9e2d414323b3c1aa0d57d7fcf2b67b59f7f6cca94
SHA512 9a672bedc3fee1afe4f065ca990cb8f8bbbef6ce04e8ef2e7f58593e4192c493bf8a987f0b71dbe416218349c6a2915e2dd41baba94aefa0654588012535eb0b

memory/2892-13-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-30-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-34-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1932-33-0x0000000074250000-0x000000007493E000-memory.dmp

memory/2892-32-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-31-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2892-27-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-25-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-23-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-21-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-20-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-17-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-16-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-35-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-36-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-37-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-39-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-40-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-41-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-42-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-43-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-45-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-44-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-46-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2892-47-0x0000000000400000-0x000000000047F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-23 10:08

Reported

2024-07-23 10:11

Platform

win10v2004-20240709-en

Max time kernel

149s

Max time network

153s

Command Line

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

Signatures

Remcos

rat remcos

Command and Scripting Interpreter: PowerShell

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 864 set thread context of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

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 WriteProcessMemory

Description Indicator Process Target
PID 864 wrote to memory of 3760 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 864 wrote to memory of 3760 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 864 wrote to memory of 3760 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 864 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\schtasks.exe
PID 864 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\schtasks.exe
PID 864 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Windows\SysWOW64\schtasks.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
PID 864 wrote to memory of 3940 N/A C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe

Processes

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

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

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TlykqEvmBV.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TlykqEvmBV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD88D.tmp"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 85.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
SG 172.93.218.178:45667 tcp
US 8.8.8.8:53 178.218.93.172.in-addr.arpa udp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 24.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 9.173.189.20.in-addr.arpa udp

Files

memory/864-0-0x0000000074A2E000-0x0000000074A2F000-memory.dmp

memory/864-1-0x0000000000350000-0x0000000000438000-memory.dmp

memory/864-2-0x00000000053E0000-0x0000000005984000-memory.dmp

memory/864-3-0x0000000004E30000-0x0000000004EC2000-memory.dmp

memory/864-4-0x0000000074A20000-0x00000000751D0000-memory.dmp

memory/864-5-0x0000000004EF0000-0x0000000004EFA000-memory.dmp

memory/864-6-0x0000000006490000-0x00000000064AA000-memory.dmp

memory/864-7-0x0000000006090000-0x000000000609E000-memory.dmp

memory/864-8-0x00000000060F0000-0x00000000061AE000-memory.dmp

memory/864-9-0x00000000088E0000-0x000000000897C000-memory.dmp

memory/3760-14-0x0000000004AD0000-0x0000000004B06000-memory.dmp

memory/3760-15-0x0000000074A20000-0x00000000751D0000-memory.dmp

memory/3760-16-0x0000000005300000-0x0000000005928000-memory.dmp

memory/3760-17-0x0000000074A20000-0x00000000751D0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpD88D.tmp

MD5 48796050a01c5b6365146d05e03551a9
SHA1 e71de4042bc46987b8fd4aa2ca24b9ab66f1ba6c
SHA256 4e8984bd9686ea08b2303db96296b443d1623f51fe33cb3fb3bfc5ede9a3ff1e
SHA512 9d4449f1e78fc7adf8b94c5f885a993f3bdc423b2b746e06a4ecb12bed4b8cf20ff59e5221cc1ec01727e05f4c06fb3c70d1f07baea83ea2e9a639e15a59afff

memory/3760-20-0x00000000051E0000-0x0000000005246000-memory.dmp

memory/3760-21-0x0000000005930000-0x0000000005996000-memory.dmp

memory/3760-19-0x00000000050C0000-0x00000000050E2000-memory.dmp

memory/3940-28-0x0000000000400000-0x000000000047F000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sdylu1o3.sr4.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3940-36-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-38-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3760-35-0x0000000005AA0000-0x0000000005DF4000-memory.dmp

memory/3940-30-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-22-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3760-39-0x0000000006090000-0x00000000060AE000-memory.dmp

memory/864-41-0x0000000074A20000-0x00000000751D0000-memory.dmp

memory/3760-40-0x0000000006120000-0x000000000616C000-memory.dmp

memory/3940-42-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-43-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-44-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3760-45-0x0000000006660000-0x0000000006692000-memory.dmp

memory/3760-48-0x000000006F530000-0x000000006F57C000-memory.dmp

memory/3760-58-0x00000000066A0000-0x00000000066BE000-memory.dmp

memory/3760-59-0x00000000070C0000-0x0000000007163000-memory.dmp

memory/3760-60-0x00000000079F0000-0x000000000806A000-memory.dmp

memory/3760-61-0x00000000073B0000-0x00000000073CA000-memory.dmp

memory/3760-62-0x0000000007420000-0x000000000742A000-memory.dmp

memory/3760-63-0x0000000007630000-0x00000000076C6000-memory.dmp

memory/3760-64-0x00000000075B0000-0x00000000075C1000-memory.dmp

memory/3760-65-0x00000000075E0000-0x00000000075EE000-memory.dmp

memory/3760-66-0x00000000075F0000-0x0000000007604000-memory.dmp

memory/3760-67-0x00000000076F0000-0x000000000770A000-memory.dmp

memory/3760-68-0x00000000076D0000-0x00000000076D8000-memory.dmp

memory/3760-71-0x0000000074A20000-0x00000000751D0000-memory.dmp

memory/3940-72-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-73-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-74-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-76-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-75-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-77-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-79-0x0000000000400000-0x000000000047F000-memory.dmp

memory/3940-80-0x0000000000400000-0x000000000047F000-memory.dmp