Malware Analysis Report

2025-04-13 10:39

Sample ID 221229-qhbfbagc8s
Target f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3
SHA256 f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3
Tags
nymaim
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3

Threat Level: Known bad

The file f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3 was found to be: Known bad.

Malicious Activity Summary

nymaim

Nymaim family

Checks computer location settings

Deletes itself

Enumerates physical storage devices

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-12-29 13:15

Signatures

Nymaim family

nymaim

Analysis: behavioral1

Detonation Overview

Submitted

2022-12-29 13:15

Reported

2022-12-29 13:17

Platform

win7-20220901-en

Max time kernel

49s

Max time network

52s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe"

Signatures

Deletes itself

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

Enumerates physical storage devices

Kills process with taskkill

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe

"C:\Users\Admin\AppData\Local\Temp\f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe" /f

Network

Country Destination Domain Proto
N/A 45.139.105.171:80 45.139.105.171 tcp

Files

memory/1364-54-0x0000000075091000-0x0000000075093000-memory.dmp

memory/1716-55-0x0000000000000000-mapping.dmp

memory/1736-56-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-12-29 13:15

Reported

2022-12-29 13:17

Platform

win10v2004-20221111-en

Max time kernel

111s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe N/A

Enumerates physical storage devices

Kills process with taskkill

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe

"C:\Users\Admin\AppData\Local\Temp\f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "f7e2d103fb403399e4dca1625cd9a733b0fd50e04fdeb435a81ade7b6f7d56e3.exe" /f

Network

Country Destination Domain Proto
N/A 45.139.105.171:80 45.139.105.171 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 20.42.73.26:443 tcp
N/A 104.80.225.205:443 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp
N/A 93.184.221.240:80 tcp

Files

memory/4928-132-0x0000000000000000-mapping.dmp

memory/3284-133-0x0000000000000000-mapping.dmp