Malware Analysis Report

2025-04-03 09:37

Sample ID 230507-gdahsadc38
Target ad08584c525066f399a30dd03f4ca596.exe
SHA256 e53dc87e496e8b9e798419bbbdc6ab953d7f1d08a54546cb3b2aabced1b88bed
Tags
systembc trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

e53dc87e496e8b9e798419bbbdc6ab953d7f1d08a54546cb3b2aabced1b88bed

Threat Level: Known bad

The file ad08584c525066f399a30dd03f4ca596.exe was found to be: Known bad.

Malicious Activity Summary

systembc trojan upx

SystemBC

Executes dropped EXE

UPX packed file

Drops file in Windows directory

Program crash

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-05-07 05:40

Signatures

UPX packed file

upx
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

2023-05-07 05:40

Reported

2023-05-07 15:28

Platform

win7-20230220-en

Max time kernel

145s

Max time network

32s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\xtwk\epwsf.exe 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
N/A N/A N/A N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\corolina17.job C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe N/A
File opened for modification C:\Windows\Tasks\corolina17.job C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 760 wrote to memory of 672 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\xtwk\epwsf.exe
PID 760 wrote to memory of 672 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\xtwk\epwsf.exe
PID 760 wrote to memory of 672 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\xtwk\epwsf.exe
PID 760 wrote to memory of 672 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\xtwk\epwsf.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe

"C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {022FA3E9-ADF9-466B-8CF7-E401E8DE2404} S-1-5-21-1914912747-3343861975-731272777-1000:TMRJMUQF\Admin:Interactive:[1]

C:\ProgramData\xtwk\epwsf.exe

C:\ProgramData\xtwk\epwsf.exe start2

Network

N/A

Files

memory/1992-54-0x0000000000400000-0x000000000044E000-memory.dmp

memory/1992-55-0x00000000002B0000-0x00000000002B4000-memory.dmp

memory/1992-56-0x0000000000400000-0x000000000044E000-memory.dmp

C:\ProgramData\xtwk\epwsf.exe

MD5 ad08584c525066f399a30dd03f4ca596
SHA1 ced14e862f8bb80de80c11bc02b4e4d4a0834389
SHA256 e53dc87e496e8b9e798419bbbdc6ab953d7f1d08a54546cb3b2aabced1b88bed
SHA512 40d435cd785280e6dd6dd3eb914da9249fe8a11fd7ecc78b1a3672de3843e9efd39676d898af8bb0cf376e50c6c7d91f2df8081d94906437e611e5ca87bd2ae8

C:\ProgramData\xtwk\epwsf.exe

MD5 ad08584c525066f399a30dd03f4ca596
SHA1 ced14e862f8bb80de80c11bc02b4e4d4a0834389
SHA256 e53dc87e496e8b9e798419bbbdc6ab953d7f1d08a54546cb3b2aabced1b88bed
SHA512 40d435cd785280e6dd6dd3eb914da9249fe8a11fd7ecc78b1a3672de3843e9efd39676d898af8bb0cf376e50c6c7d91f2df8081d94906437e611e5ca87bd2ae8

memory/672-69-0x0000000000400000-0x000000000044E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-05-07 05:40

Reported

2023-05-07 15:28

Platform

win10v2004-20230220-en

Max time kernel

150s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe"

Signatures

SystemBC

trojan systembc

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\urbt\blqrr.exe 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
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 file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\corolina17.job C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe N/A
File opened for modification C:\Windows\Tasks\corolina17.job C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe

"C:\Users\Admin\AppData\Local\Temp\ad08584c525066f399a30dd03f4ca596.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4632 -ip 4632

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4632 -s 484

C:\ProgramData\urbt\blqrr.exe

C:\ProgramData\urbt\blqrr.exe start2

Network

Country Destination Domain Proto
NL 8.253.208.120:80 tcp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 93.184.220.29:80 tcp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 52.242.101.226:443 tcp
GB 51.105.71.136:443 tcp
NL 8.253.208.120:80 tcp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
US 52.242.101.226:443 tcp
NL 173.223.113.164:443 tcp
US 52.242.101.226:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp
US 52.242.101.226:443 tcp
US 52.242.101.226:443 tcp
US 52.242.101.226:443 tcp

Files

memory/4632-133-0x0000000000400000-0x000000000044E000-memory.dmp

memory/4632-134-0x0000000000400000-0x000000000044E000-memory.dmp

memory/4632-135-0x00000000008D0000-0x00000000008D4000-memory.dmp

memory/4632-136-0x0000000000400000-0x000000000044E000-memory.dmp

memory/4632-139-0x00000000008D0000-0x00000000008D4000-memory.dmp

memory/4632-147-0x0000000000400000-0x000000000044E000-memory.dmp

C:\ProgramData\urbt\blqrr.exe

MD5 ad08584c525066f399a30dd03f4ca596
SHA1 ced14e862f8bb80de80c11bc02b4e4d4a0834389
SHA256 e53dc87e496e8b9e798419bbbdc6ab953d7f1d08a54546cb3b2aabced1b88bed
SHA512 40d435cd785280e6dd6dd3eb914da9249fe8a11fd7ecc78b1a3672de3843e9efd39676d898af8bb0cf376e50c6c7d91f2df8081d94906437e611e5ca87bd2ae8

C:\ProgramData\urbt\blqrr.exe

MD5 ad08584c525066f399a30dd03f4ca596
SHA1 ced14e862f8bb80de80c11bc02b4e4d4a0834389
SHA256 e53dc87e496e8b9e798419bbbdc6ab953d7f1d08a54546cb3b2aabced1b88bed
SHA512 40d435cd785280e6dd6dd3eb914da9249fe8a11fd7ecc78b1a3672de3843e9efd39676d898af8bb0cf376e50c6c7d91f2df8081d94906437e611e5ca87bd2ae8

memory/4304-150-0x0000000000400000-0x000000000044E000-memory.dmp

memory/4304-152-0x0000000000400000-0x000000000044E000-memory.dmp