Malware Analysis Report

2025-01-02 03:09

Sample ID 240817-bjjezsybra
Target 2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe
SHA256 2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9
Tags
remcos remotehost discovery rat upx collection credential_access 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

2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9

Threat Level: Known bad

The file 2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe was found to be: Known bad.

Malicious Activity Summary

remcos remotehost discovery rat upx collection credential_access stealer

Remcos

Credentials from Password Stores: Credentials from Web Browsers

NirSoft MailPassView

Detected Nirsoft tools

NirSoft WebBrowserPassView

UPX packed file

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

AutoIT Executable

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

Suspicious use of SendNotifyMessage

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-17 01:10

Signatures

UPX packed file

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

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-17 01:10

Reported

2024-08-17 01:12

Platform

win7-20240705-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe"

Signatures

Remcos

rat remcos

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A 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 2436 set thread context of 2384 N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.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\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe"

Network

N/A

Files

memory/2436-0-0x0000000000CD0000-0x0000000000EA7000-memory.dmp

memory/2436-12-0x00000000001E0000-0x00000000001E4000-memory.dmp

memory/2384-13-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2384-15-0x0000000000430000-0x0000000000430000-memory.dmp

memory/2436-16-0x0000000000CD0000-0x0000000000EA7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-17 01:10

Reported

2024-08-17 01:12

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.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
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

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

UPX packed file

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

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\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 3492 set thread context of 3720 N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 set thread context of 1932 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 set thread context of 3400 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 set thread context of 844 N/A C:\Windows\SysWOW64\svchost.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:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\svchost.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3492 wrote to memory of 3720 N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe C:\Windows\SysWOW64\svchost.exe
PID 3492 wrote to memory of 3720 N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe C:\Windows\SysWOW64\svchost.exe
PID 3492 wrote to memory of 3720 N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe C:\Windows\SysWOW64\svchost.exe
PID 3492 wrote to memory of 3720 N/A C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 2964 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 2964 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 2964 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 1192 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 1192 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 1192 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 1932 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 1932 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 1932 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 1932 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 3400 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 3400 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 3400 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 3400 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 844 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 844 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 844 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe
PID 3720 wrote to memory of 844 N/A C:\Windows\SysWOW64\svchost.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\2c98d193201137a3e33b34934fa866c2c66f346ed6878562e8191f4314bc5dc9.exe"

C:\Windows\SysWOW64\svchost.exe

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

C:\Windows\SysWOW64\svchost.exe

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

C:\Windows\SysWOW64\svchost.exe

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

C:\Windows\SysWOW64\svchost.exe

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

C:\Windows\SysWOW64\svchost.exe

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

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 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
LT 194.169.175.190:2404 tcp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 190.175.169.194.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
LT 194.169.175.190:2404 tcp
LT 194.169.175.190:2404 tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.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
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/3492-0-0x0000000000A20000-0x0000000000BF7000-memory.dmp

memory/3492-12-0x0000000003B00000-0x0000000003B04000-memory.dmp

memory/3720-13-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-15-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-14-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3492-20-0x0000000000A20000-0x0000000000BF7000-memory.dmp

memory/3720-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-18-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-16-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-22-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-23-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-25-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1932-26-0x0000000000400000-0x0000000000478000-memory.dmp

memory/844-35-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1932-36-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3400-40-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3400-44-0x0000000000400000-0x0000000000462000-memory.dmp

memory/844-45-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1932-39-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3400-37-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1932-34-0x0000000000400000-0x0000000000478000-memory.dmp

memory/844-38-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3400-33-0x0000000000400000-0x0000000000462000-memory.dmp

memory/844-29-0x0000000000400000-0x0000000000424000-memory.dmp

memory/844-32-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3400-28-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1932-47-0x0000000000400000-0x0000000000478000-memory.dmp

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

MD5 15e28d82a9ee8a45c10bcf671fef0362
SHA1 2b126b086a1191cb8b4d444e87781358d51af3a4
SHA256 012fbb5f15d52a9560cf0e77fd36837ec2c56aff7a989d31c3d40d4f6df6cf9d
SHA512 3dd749523858a54e7e5ededba47d54715c9d5663dd0bd609363de7442436d1f0e924c5e4706e3ac413b79ddb6a18c796cc0ad166b4c87a3a7a6b009ba77fee82

memory/3720-49-0x0000000010000000-0x0000000010019000-memory.dmp

memory/3720-53-0x0000000010000000-0x0000000010019000-memory.dmp

memory/3720-52-0x0000000010000000-0x0000000010019000-memory.dmp

memory/3720-54-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-55-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-56-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-57-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-58-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-59-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-60-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-61-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3720-64-0x0000000000400000-0x0000000000482000-memory.dmp