Malware Analysis Report

2025-01-02 03:14

Sample ID 240402-trx78afa8z
Target 145f990406000a1e944fef609e608edd4f6a347d4038e880599bcc1fb6c709b7.gz.danger
SHA256 145f990406000a1e944fef609e608edd4f6a347d4038e880599bcc1fb6c709b7
Tags
remcos remotehost collection rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

145f990406000a1e944fef609e608edd4f6a347d4038e880599bcc1fb6c709b7

Threat Level: Known bad

The file 145f990406000a1e944fef609e608edd4f6a347d4038e880599bcc1fb6c709b7.gz.danger was found to be: Known bad.

Malicious Activity Summary

remcos remotehost collection rat

Remcos

NirSoft MailPassView

NirSoft WebBrowserPassView

Nirsoft

Drops startup file

Executes dropped EXE

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

AutoIT Executable

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious behavior: MapViewOfSection

Suspicious behavior: GetForegroundWindowSpam

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-02 16:18

Signatures

AutoIT Executable

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

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-02 16:18

Reported

2024-04-02 16:20

Platform

win11-20240221-en

Max time kernel

149s

Max time network

155s

Command Line

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

Signatures

Remcos

rat remcos

NirSoft MailPassView

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
N/A N/A N/A N/A

NirSoft WebBrowserPassView

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
N/A N/A N/A N/A

Nirsoft

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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\excel.vbs C:\Users\Admin\AppData\Local\directory\excel.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\directory\excel.exe N/A

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-647252928-2816094679-1307623958-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-647252928-2816094679-1307623958-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Windows\SysWOW64\svchost.exe N/A

AutoIT Executable

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1532 set thread context of 4952 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 set thread context of 2300 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 set thread context of 4644 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 set thread context of 4008 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 set thread context of 3704 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 set thread context of 1124 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 set thread context of 2972 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\svchost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5044 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe C:\Users\Admin\AppData\Local\directory\excel.exe
PID 5044 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe C:\Users\Admin\AppData\Local\directory\excel.exe
PID 5044 wrote to memory of 1532 N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe C:\Users\Admin\AppData\Local\directory\excel.exe
PID 1532 wrote to memory of 4952 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe
PID 1532 wrote to memory of 4952 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe
PID 1532 wrote to memory of 4952 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe
PID 1532 wrote to memory of 4952 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 2300 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 2300 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 2300 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 2300 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4644 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4644 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4644 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4644 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 3020 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 3020 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 3020 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4008 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4008 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4008 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4008 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 3704 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 3704 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 3704 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 3704 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 1124 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 1124 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 1124 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 1124 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4984 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4984 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 4984 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 2972 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 2972 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 2972 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 4952 wrote to memory of 2972 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe

Processes

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

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

C:\Users\Admin\AppData\Local\directory\excel.exe

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

C:\Windows\SysWOW64\svchost.exe

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

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\gabydxzkmzdohshwukgdldukgq"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\quordhkmihvtryvidvteoipapwyqg"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\swtbwaufwpngtejmuggyzvjjylhzhnxhn"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\swtbwaufwpngtejmuggyzvjjylhzhnxhn"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\chzktmvolfamdhxeijoduykrevuij"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\mkeuuegqznsqnvliatifflfifblrkxhfq"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\xeknv"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\xeknv"

Network

Country Destination Domain Proto
US 8.8.8.8:53 shgoini.com udp
US 107.175.229.143:30902 shgoini.com tcp
US 8.8.8.8:53 143.229.175.107.in-addr.arpa udp
NL 178.237.33.50:80 geoplugin.net tcp
US 107.175.229.143:30902 shgoini.com tcp
US 107.175.229.143:30902 shgoini.com tcp
US 107.175.229.143:30902 shgoini.com tcp
US 107.175.229.143:30902 shgoini.com tcp

Files

memory/5044-10-0x0000000003BE0000-0x0000000003BE4000-memory.dmp

C:\Users\Admin\AppData\Local\directory\excel.exe

MD5 e60cb4e32cac1fea784afd8af6262bec
SHA1 290195f2c7d1563961d738421de9a0967bfa34a7
SHA256 43eee829bdb467bed7ea6907eed8ced3e36e663df0407dff1c4757086f88212d
SHA512 9f0af51cbdd9f6ec20d58797458c43df27fb24e65b63d8e9af1765bfd77687f36c2f69d18d97fbc4d14a3dc6b31939d05d16bfc71eca95fc86a470056cb97b70

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

MD5 5836e6fb1198f5826ca8facdba529e79
SHA1 cc17afcef2c435265036b8520728963b91ae652c
SHA256 f59b9e90acdbe2a0cc3e5e66bb3214adb7506fc775b8264e36e408a21decfba0
SHA512 f66d5d9e96911ffe7228d2db7b305ee404ba59d25fcde778d00a590417e3606b72dac0a91b7edb4e5d42f7a5a14990eaf4b5058e16ca5e12b49701c6168e3045

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

MD5 33b3a37e1729538227a84e8aec307e27
SHA1 d888cf3906a4bc58ccc74cba9fe6f314d3be29dd
SHA256 61616629bc83442de66185fb8a8b3ed37d4fc690d473e28cf570527a5db7d456
SHA512 7d1f025b2c18f6b1e7d1793897a17bc36f95a417d1764efc109144b0ffbb8c0a43ea216cab1e3d16935565bcd309ac8845e9df1805f99a1ac8d1f687ad52ef80

memory/4952-28-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-29-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-31-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-39-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-41-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-45-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-46-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2300-47-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2300-50-0x0000000000400000-0x0000000000478000-memory.dmp

memory/4644-48-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2300-55-0x0000000000400000-0x0000000000478000-memory.dmp

memory/4008-52-0x0000000000400000-0x0000000000424000-memory.dmp

memory/4644-53-0x0000000000400000-0x0000000000462000-memory.dmp

memory/4008-59-0x0000000000400000-0x0000000000424000-memory.dmp

memory/4644-58-0x0000000000400000-0x0000000000462000-memory.dmp

memory/4644-57-0x0000000000400000-0x0000000000462000-memory.dmp

memory/4008-64-0x0000000000400000-0x0000000000424000-memory.dmp

memory/4644-65-0x0000000000400000-0x0000000000462000-memory.dmp

memory/4008-66-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2300-68-0x0000000000400000-0x0000000000478000-memory.dmp

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

MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

memory/4952-70-0x0000000010000000-0x0000000010019000-memory.dmp

memory/4952-74-0x0000000010000000-0x0000000010019000-memory.dmp

memory/4952-73-0x0000000010000000-0x0000000010019000-memory.dmp

memory/4952-76-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-75-0x0000000010000000-0x0000000010019000-memory.dmp

memory/4952-77-0x0000000010000000-0x0000000010019000-memory.dmp

memory/4952-78-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-79-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-80-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3704-84-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1124-86-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3704-89-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1124-88-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3704-87-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3704-98-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2972-99-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2972-100-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2972-97-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1124-94-0x0000000000400000-0x0000000000462000-memory.dmp

memory/4952-102-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-103-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-104-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-105-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4952-106-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 16:18

Reported

2024-04-02 16:20

Platform

win10v2004-20240226-en

Max time kernel

143s

Max time network

152s

Command Line

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

Signatures

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A

Processes

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

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=764 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 9.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 35.34.16.2.in-addr.arpa udp
GB 142.250.187.202:443 tcp
US 8.8.8.8:53 41.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 40.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 4.73.50.20.in-addr.arpa udp

Files

memory/4792-10-0x0000000001E70000-0x0000000001E74000-memory.dmp