Malware Analysis Report

2024-11-13 18:00

Sample ID 241110-bytt9swkbt
Target ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43
SHA256 ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43
Tags
upx discovery evasion execution
score
8/10

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
8/10

SHA256

ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43

Threat Level: Likely malicious

The file ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43 was found to be: Likely malicious.

Malicious Activity Summary

upx discovery evasion execution

Stops running service(s)

Loads dropped DLL

Executes dropped EXE

Drops file in System32 directory

UPX packed file

Launches sc.exe

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-10 01:33

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

2024-11-10 01:33

Reported

2024-11-10 01:36

Platform

win7-20241010-en

Max time kernel

119s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe"

Signatures

Stops running service(s)

evasion execution

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\1230\smss.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\1230\smss.exe C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe N/A
File opened for modification C:\Windows\SysWOW64\1230\smss.exe C:\Windows\SysWOW64\1230\smss.exe N/A
File opened for modification C:\Windows\SysWOW64\Service.exe C:\Windows\SysWOW64\1230\smss.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
N/A N/A N/A N/A

Launches sc.exe

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

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\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\sc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\1230\smss.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\sc.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe N/A
N/A N/A C:\Windows\SysWOW64\1230\smss.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3032 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe C:\Windows\SysWOW64\sc.exe
PID 3032 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe C:\Windows\SysWOW64\sc.exe
PID 3032 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe C:\Windows\SysWOW64\sc.exe
PID 3032 wrote to memory of 3028 N/A C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe C:\Windows\SysWOW64\sc.exe
PID 3032 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe C:\Windows\SysWOW64\1230\smss.exe
PID 3032 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe C:\Windows\SysWOW64\1230\smss.exe
PID 3032 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe C:\Windows\SysWOW64\1230\smss.exe
PID 3032 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe C:\Windows\SysWOW64\1230\smss.exe
PID 1668 wrote to memory of 1976 N/A C:\Windows\SysWOW64\1230\smss.exe C:\Windows\SysWOW64\sc.exe
PID 1668 wrote to memory of 1976 N/A C:\Windows\SysWOW64\1230\smss.exe C:\Windows\SysWOW64\sc.exe
PID 1668 wrote to memory of 1976 N/A C:\Windows\SysWOW64\1230\smss.exe C:\Windows\SysWOW64\sc.exe
PID 1668 wrote to memory of 1976 N/A C:\Windows\SysWOW64\1230\smss.exe C:\Windows\SysWOW64\sc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe

"C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe"

C:\Windows\SysWOW64\sc.exe

C:\Windows\system32\sc.exe stop wscsvc

C:\Windows\SysWOW64\1230\smss.exe

C:\Windows\system32\1230\smss.exe -d

C:\Windows\SysWOW64\sc.exe

C:\Windows\system32\sc.exe stop wscsvc

Network

N/A

Files

memory/1668-20-0x0000000000400000-0x0000000000422000-memory.dmp

memory/3032-18-0x0000000000400000-0x0000000000422000-memory.dmp

C:\Windows\SysWOW64\1230\smss.exe

MD5 82afab0b8a96e1153304e6ad01b3b47d
SHA1 18967fccd12572d86f568ee4330c9a05083dd26f
SHA256 fca2e73f1f46ac944fa1535182e68e08025a7996b8fce5539a30a7b634959664
SHA512 c1ce15ef70439023b2b64e52276c700340bd193687c4e842470791ea2eee32f705e347e4492135fdd41706895d5fb7051d4688b53fe30aa7c5761492528421fa

memory/1668-12-0x0000000000400000-0x0000000000422000-memory.dmp

memory/3032-10-0x0000000000340000-0x0000000000362000-memory.dmp

memory/3032-0-0x0000000000400000-0x0000000000422000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-10 01:33

Reported

2024-11-10 01:36

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe"

Signatures

Stops running service(s)

evasion execution

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\1230\smss.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\1230\smss.exe C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe N/A
File opened for modification C:\Windows\SysWOW64\1230\smss.exe C:\Windows\SysWOW64\1230\smss.exe N/A
File opened for modification C:\Windows\SysWOW64\Service.exe C:\Windows\SysWOW64\1230\smss.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

Launches sc.exe

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

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\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\sc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\1230\smss.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\sc.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe N/A
N/A N/A C:\Windows\SysWOW64\1230\smss.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe

"C:\Users\Admin\AppData\Local\Temp\ab182aba91222ca2cb5ffe22d83450cfaa9fe0847e068d0bf9f514ff5b641e43.exe"

C:\Windows\SysWOW64\sc.exe

C:\Windows\system32\sc.exe stop wscsvc

C:\Windows\SysWOW64\1230\smss.exe

C:\Windows\system32\1230\smss.exe -d

C:\Windows\SysWOW64\sc.exe

C:\Windows\system32\sc.exe stop wscsvc

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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 103.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/4156-0-0x0000000000400000-0x0000000000422000-memory.dmp

C:\Windows\SysWOW64\1230\smss.exe

MD5 f55ddeb5332b0f2fc69f9a92dfb09791
SHA1 01838a8d253067d5143fd756c8839f17340a46c0
SHA256 a08af6e3404d464e93e93204531cd8cb7d3a2ff4d6b6c4e9cbe39a760081ae1c
SHA512 07c78514127339da46ba0bea4486d2a0026cbf375968f5b56ae32eda7e2ae4b8e278b2d97d5bd9aa5aaa366ab636079ed3b0d9c7537ec5a7ef90009969b5df81

memory/1072-11-0x0000000000400000-0x0000000000422000-memory.dmp

memory/4156-13-0x0000000000400000-0x0000000000422000-memory.dmp