Malware Analysis Report

2024-09-09 12:47

Sample ID 240613-2ysv3stgqf
Target 5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87
SHA256 5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87
Tags
egochukwu remcos collection spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87

Threat Level: Known bad

The file 5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87 was found to be: Known bad.

Malicious Activity Summary

egochukwu remcos collection spyware stealer

Remcos family

Nirsoft

NirSoft MailPassView

NirSoft WebBrowserPassView

Reads user/profile data of web browsers

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: MapViewOfSection

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-13 22:59

Signatures

Remcos family

remcos

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 22:59

Reported

2024-06-13 23:04

Platform

win7-20240611-en

Max time kernel

298s

Max time network

290s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe"

Signatures

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

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

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

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2068 wrote to memory of 2128 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2128 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2128 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2128 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2328 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 2068 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe

"C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe"

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\hptjoourxc"

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\kjybphfllkaat"

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\uldupzpmztsfdgrt"

Network

Country Destination Domain Proto
US 8.8.8.8:53 taker202.ddns.net udp
US 8.8.8.8:53 taker202.duckdns.org udp
NL 147.78.103.74:5033 taker202.duckdns.org tcp
NL 147.78.103.74:5033 taker202.duckdns.org tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/2128-1-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2632-5-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2632-15-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2328-14-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2632-12-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2632-9-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2128-13-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2328-10-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2128-11-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2128-6-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2328-4-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2328-7-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2632-17-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2128-22-0x0000000000400000-0x0000000000478000-memory.dmp

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

MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

memory/2328-26-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2068-28-0x0000000010000000-0x0000000010019000-memory.dmp

memory/2068-31-0x0000000010000000-0x0000000010019000-memory.dmp

memory/2068-32-0x0000000010000000-0x0000000010019000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 8a674ee293087f9c67f44d1ce6fe9923
SHA1 500f7f97ae9f53b7448cedaec3e60cf46af8c919
SHA256 3346b61c039472f4c5b29b9e4ae92f6dec600cfe69eb0d9fcb168899e35afded
SHA512 c7d5237618e48fbd2afab2104de6dbf5e63426330b78f7c9ae687364edeac273e61fc7f7222a68b6bc699dd1e4d85b49996cbc2e89738db6f06eea380dcfd783

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 22:59

Reported

2024-06-13 23:04

Platform

win10-20240611-en

Max time kernel

299s

Max time network

290s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe"

Signatures

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

NirSoft WebBrowserPassView

Description Indicator Process Target
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

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1453213197-474736321-1741884505-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 864 wrote to memory of 3712 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 864 wrote to memory of 3712 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 864 wrote to memory of 3712 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 864 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 864 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 864 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 864 wrote to memory of 5088 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 864 wrote to memory of 5088 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe
PID 864 wrote to memory of 5088 N/A C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe

"C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe"

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\ypijebwdqasvnybbpbyfsplgngmb"

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\irocftgeeikipnyfymtzdcgxwuwkoac"

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe

C:\Users\Admin\AppData\Local\Temp\5a5cced23739637bb38c273eeaee825f9082a709e8bd10dbae43f8d291944e87.exe /stext "C:\Users\Admin\AppData\Local\Temp\tltn"

Network

Country Destination Domain Proto
US 8.8.8.8:53 taker202.ddns.net udp
US 8.8.8.8:53 taker202.duckdns.org udp
NL 147.78.103.74:5033 taker202.duckdns.org tcp
NL 147.78.103.74:5033 taker202.duckdns.org tcp
US 8.8.8.8:53 74.103.78.147.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 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/3712-1-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1508-2-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1508-6-0x0000000000400000-0x0000000000462000-memory.dmp

memory/5088-13-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1508-17-0x0000000000400000-0x0000000000462000-memory.dmp

memory/5088-16-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3712-14-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3712-10-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1508-11-0x0000000000400000-0x0000000000462000-memory.dmp

memory/5088-9-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1508-7-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3712-5-0x0000000000400000-0x0000000000478000-memory.dmp

memory/5088-12-0x0000000000400000-0x0000000000424000-memory.dmp

memory/5088-8-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3712-23-0x0000000000400000-0x0000000000478000-memory.dmp

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

MD5 cf70081214a8e81a7674e4743b19632d
SHA1 a370bf282dd34e9f95cc136217d8edacfbbb9891
SHA256 e3743a0f13603df1b7789ba10a6121034694de94c097fe237cc407fe26fc7d7d
SHA512 7a43aa15fc46d90b6985a48d4dfb9bd356e134c285a3829e32abb5c1ce84e86b134176cc60b387a529b21a9912bb865004c52465674836c450d58a139a867372

memory/864-26-0x0000000010000000-0x0000000010019000-memory.dmp

memory/864-29-0x0000000010000000-0x0000000010019000-memory.dmp

memory/864-30-0x0000000010000000-0x0000000010019000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 3aaa2b04a7f106a42f9f4870e52a960d
SHA1 9cf8923c8136fa8557d7983a39073cd94a420eeb
SHA256 6c99355b78c4f8f96e207f19e770479add0dc3b8c9c1d79878cebce59b6d955f
SHA512 a67a62a1a4970385f73e590f517d32bb867cc7f4cf09df592666cf9e7ff1de6e97c932ba235c82a2fad7ee99d023d71c8b8f456d5481a12064cec3362c21790f