Malware Analysis Report

2025-04-13 10:39

Sample ID 221229-pfgc4sgb5s
Target 121c8d638b96a43eb3c2fb623e467536.exe
SHA256 3c476ad15acd041a55c25fe36c6eb40b5f4112d3bb5bc36ca1c619a9269c20bc
Tags
nymaim trojan
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

3c476ad15acd041a55c25fe36c6eb40b5f4112d3bb5bc36ca1c619a9269c20bc

Threat Level: Known bad

The file 121c8d638b96a43eb3c2fb623e467536.exe was found to be: Known bad.

Malicious Activity Summary

nymaim trojan

NyMaim

Deletes itself

Checks computer location settings

Program crash

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 12:16

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-12-29 12:16

Reported

2022-12-29 12:18

Platform

win7-20220812-en

Max time kernel

43s

Max time network

46s

Command Line

"C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe"

Signatures

NyMaim

trojan nymaim

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\121c8d638b96a43eb3c2fb623e467536.exe

"C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "121c8d638b96a43eb3c2fb623e467536.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "121c8d638b96a43eb3c2fb623e467536.exe" /f

Network

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

Files

memory/560-54-0x0000000076041000-0x0000000076043000-memory.dmp

memory/560-56-0x0000000000220000-0x0000000000260000-memory.dmp

memory/560-55-0x000000000062A000-0x0000000000650000-memory.dmp

memory/560-57-0x0000000000400000-0x0000000000462000-memory.dmp

memory/892-58-0x0000000000000000-mapping.dmp

memory/560-59-0x000000000062A000-0x0000000000650000-memory.dmp

memory/560-60-0x0000000000400000-0x0000000000462000-memory.dmp

memory/268-61-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-12-29 12:16

Reported

2022-12-29 12:18

Platform

win10v2004-20220812-en

Max time kernel

142s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe"

Signatures

NyMaim

trojan nymaim

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.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\121c8d638b96a43eb3c2fb623e467536.exe

"C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2268 -ip 2268

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 456

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 2268 -ip 2268

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2268 -ip 2268

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 812

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2268 -ip 2268

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 812

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2268 -ip 2268

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 772

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2268 -ip 2268

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 928

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 2268 -ip 2268

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1020

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 608 -p 2268 -ip 2268

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1088

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 624 -p 2268 -ip 2268

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 1356

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "121c8d638b96a43eb3c2fb623e467536.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 652 -p 2268 -ip 2268

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "121c8d638b96a43eb3c2fb623e467536.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 468

Network

Country Destination Domain Proto
N/A 209.197.3.8:80 tcp
N/A 93.184.220.29:80 tcp
N/A 45.139.105.171:80 45.139.105.171 tcp
N/A 95.101.78.82:80 tcp
N/A 95.101.78.82:80 tcp
N/A 104.80.225.205:443 tcp
N/A 51.11.192.48:443 tcp
N/A 209.197.3.8:80 tcp
N/A 209.197.3.8:80 tcp
N/A 209.197.3.8:80 tcp

Files

memory/2268-132-0x00000000005B7000-0x00000000005DE000-memory.dmp

memory/2268-133-0x00000000008E0000-0x0000000000920000-memory.dmp

memory/2268-134-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2760-135-0x0000000000000000-mapping.dmp

memory/1268-136-0x0000000000000000-mapping.dmp

memory/2268-137-0x00000000005B7000-0x00000000005DE000-memory.dmp

memory/2268-138-0x0000000000400000-0x0000000000462000-memory.dmp