Malware Analysis Report

2025-01-02 03:11

Sample ID 240818-p5a8dstgrf
Target 5c482e2f743f26a08c2c635a631f2710N.exe
SHA256 44c60a89bb1a3de59c88bb8cd3e866ebd245d413c22fcbd0bf5d51bb5650d935
Tags
remcos remotehost discovery 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

44c60a89bb1a3de59c88bb8cd3e866ebd245d413c22fcbd0bf5d51bb5650d935

Threat Level: Known bad

The file 5c482e2f743f26a08c2c635a631f2710N.exe was found to be: Known bad.

Malicious Activity Summary

remcos remotehost discovery rat

Remcos

Loads dropped DLL

Executes dropped EXE

Drops startup file

Suspicious use of SetThreadContext

AutoIT Executable

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious behavior: MapViewOfSection

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-18 12:54

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: behavioral1

Detonation Overview

Submitted

2024-08-18 12:54

Reported

2024-08-18 12:56

Platform

win7-20240704-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"

Signatures

Remcos

rat remcos

Drops startup file

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

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe N/A

AutoIT Executable

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3060 set thread context of 3056 N/A C:\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.exe C:\Windows\SysWOW64\svchost.exe

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\5c482e2f743f26a08c2c635a631f2710N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A

Suspicious behavior: MapViewOfSection

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

Processes

C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe

"C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"

C:\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.exe

"C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"

Network

Country Destination Domain Proto
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp

Files

memory/1512-11-0x0000000000160000-0x0000000000164000-memory.dmp

\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.exe

MD5 5c482e2f743f26a08c2c635a631f2710
SHA1 befba6c4b56b91ed8c4dcda6c2e622f495f1044f
SHA256 44c60a89bb1a3de59c88bb8cd3e866ebd245d413c22fcbd0bf5d51bb5650d935
SHA512 430e7694444de8ea07c64986a6ce285dd5a71449f7c1230bb08850ed2a853cc180d4fc94011ae71d7bc1278c27bf2fe0b676f65261dd4df2c0ebf8363f387957

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

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

MD5 0e61f365fccc5d5731f3cef513e3f527
SHA1 c48fccf78a6b1456c71265eceed35886d5558f79
SHA256 744b5140e3fa446c84eb8b33be90a52a6e4ccea5d859b89e5819ba41367c629f
SHA512 f66caa3a6f51799825d6efbf4eb459fac70e928324429d96c527e1742741adb3eeb9d5ebea82ef61140038f60fabb874e2cd0c35f3edb5fe7093975dc4485922

memory/3060-31-0x0000000000060000-0x00000000001CB000-memory.dmp

memory/3056-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-38-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3060-37-0x0000000000060000-0x00000000001CB000-memory.dmp

memory/3056-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-39-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-41-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-45-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-46-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-47-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-48-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-49-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-50-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-51-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-52-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-53-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-54-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-55-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-56-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-57-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-58-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-59-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-60-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-61-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-62-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-63-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-64-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-65-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-66-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-67-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-68-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-69-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-70-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-71-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-72-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-73-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-74-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-75-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-76-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-77-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-78-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-79-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-80-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-81-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-82-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-83-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-84-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-85-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-86-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-87-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-88-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-89-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-90-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-91-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-92-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-93-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-94-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-95-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-96-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-97-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-98-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3056-99-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-18 12:54

Reported

2024-08-18 12:56

Platform

win10v2004-20240802-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"

Signatures

Remcos

rat remcos

Drops startup file

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.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 4488 set thread context of 4580 N/A C:\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.exe C:\Windows\SysWOW64\svchost.exe

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\5c482e2f743f26a08c2c635a631f2710N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.exe N/A

Suspicious behavior: MapViewOfSection

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

Processes

C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe

"C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"

C:\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.exe

"C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\5c482e2f743f26a08c2c635a631f2710N.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
SG 23.106.127.123:87 tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
SG 23.106.127.123:87 tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
SG 23.106.127.123:87 tcp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
SG 23.106.127.123:87 tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp
SG 23.106.127.123:87 tcp

Files

memory/5060-11-0x0000000001510000-0x0000000001514000-memory.dmp

C:\Users\Admin\AppData\Local\jailkeeper\undiscernibleness.exe

MD5 5c482e2f743f26a08c2c635a631f2710
SHA1 befba6c4b56b91ed8c4dcda6c2e622f495f1044f
SHA256 44c60a89bb1a3de59c88bb8cd3e866ebd245d413c22fcbd0bf5d51bb5650d935
SHA512 430e7694444de8ea07c64986a6ce285dd5a71449f7c1230bb08850ed2a853cc180d4fc94011ae71d7bc1278c27bf2fe0b676f65261dd4df2c0ebf8363f387957

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

MD5 98a6ddf7b35db5a0ae1559392c44972e
SHA1 eed71d98073847ddd1a0233076cee86cdd3b0899
SHA256 3808b0953ae16e27a90085876bfe11645ca7d8d1cafd51315a46d0504a44d918
SHA512 b9c14c1651c873d09dd713a6724dc190d85f490a7492505ec502d2982a847159df0f6e71948ef8cd924a91381ac66a9458a881571382ae855151b3a8e93363aa

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

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

MD5 0e61f365fccc5d5731f3cef513e3f527
SHA1 c48fccf78a6b1456c71265eceed35886d5558f79
SHA256 744b5140e3fa446c84eb8b33be90a52a6e4ccea5d859b89e5819ba41367c629f
SHA512 f66caa3a6f51799825d6efbf4eb459fac70e928324429d96c527e1742741adb3eeb9d5ebea82ef61140038f60fabb874e2cd0c35f3edb5fe7093975dc4485922

memory/4580-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-31-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-37-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-38-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-39-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-41-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-45-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-46-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-47-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-48-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-49-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-50-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-51-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-52-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-53-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-54-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-55-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-56-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-57-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-58-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-59-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-60-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-61-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-62-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-63-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-64-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-65-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-66-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-67-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-68-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-69-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-70-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-71-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-72-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-73-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-74-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-75-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-76-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-77-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-78-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-79-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-80-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-81-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-82-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-83-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-84-0x0000000000400000-0x0000000000482000-memory.dmp

memory/4580-85-0x0000000000400000-0x0000000000482000-memory.dmp