Malware Analysis Report

2025-01-18 09:30

Sample ID 240201-q667wsgger
Target 01022024_2153_31012024_wobaggvm.zip
SHA256 9bfcd902f51c2898e4e71d87f8a8f00ccb26cc3cb11191767ce21a0e51d1a468
Tags
strela 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

9bfcd902f51c2898e4e71d87f8a8f00ccb26cc3cb11191767ce21a0e51d1a468

Threat Level: Known bad

The file 01022024_2153_31012024_wobaggvm.zip was found to be: Known bad.

Malicious Activity Summary

strela stealer

Strela

Checks computer location settings

Loads dropped DLL

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-01 13:53

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-01 13:53

Reported

2024-02-01 13:56

Platform

win7-20231215-en

Max time kernel

119s

Max time network

124s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\18491242336191.js

Signatures

Strela

stealer strela

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1836 wrote to memory of 2272 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\cmd.exe
PID 1836 wrote to memory of 2272 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\cmd.exe
PID 1836 wrote to memory of 2272 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\cmd.exe
PID 2272 wrote to memory of 2632 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\findstr.exe
PID 2272 wrote to memory of 2632 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\findstr.exe
PID 2272 wrote to memory of 2632 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\findstr.exe
PID 2272 wrote to memory of 2212 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\certutil.exe
PID 2272 wrote to memory of 2212 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\certutil.exe
PID 2272 wrote to memory of 2212 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\certutil.exe
PID 2272 wrote to memory of 3032 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe
PID 2272 wrote to memory of 3032 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe
PID 2272 wrote to memory of 3032 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe
PID 3032 wrote to memory of 3028 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 3032 wrote to memory of 3028 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 3032 wrote to memory of 3028 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\18491242336191.js

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /k copy "C:\Users\Admin\AppData\Local\Temp\18491242336191.js" "C:\Users\Admin\AppData\Local\Temp\\belllegal.bat" && "C:\Users\Admin\AppData\Local\Temp\\belllegal.bat"

C:\Windows\system32\findstr.exe

findstr /V carriagerun ""C:\Users\Admin\AppData\Local\Temp\\belllegal.bat""

C:\Windows\system32\certutil.exe

certutil -f -decode timepolish jealousland.dll

C:\Windows\system32\cmd.exe

cmd /c rundll32 jealousland.dll,m

C:\Windows\system32\rundll32.exe

rundll32 jealousland.dll,m

Network

N/A

Files

C:\Users\Admin\AppData\Local\Temp\belllegal.bat

MD5 00a488ef84d5c94fcc82506405c1fb20
SHA1 660c34be4fc2cfad57705d5a607bedfdf5597e7d
SHA256 9b24c97d6400214ccfdf2ef5bdc89de58bbe54745b7caa03d0ca0f7861c985e1
SHA512 8f9370c6f35c7baaca1e8390843cceaf9a775f799cd44736072b78532a11df239cc64cde336bb033399d37e2f8e4d7aa7f82e21226b2f6b33fb2246db48e6484

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

MD5 5b1835d9b309c246b6e269a3143653c3
SHA1 0a872a6f63eb8e100979821bade186f5d73d6dbe
SHA256 f0b862a5c62cc552e14a345efbf0816e37078f312bd46c3663a4be9fd911a893
SHA512 78228fc71a8152f1c3ee157db379033211eb63857a0520755505f2b1f0f5c0ab952ff536d96b85b1ef2f6c7ecc56d742f19888c2039212fb947890a1bbdc8360

C:\Users\Admin\AppData\Local\Temp\jealousland.dll

MD5 363e3e964b6d304e8110b1a2eb61fdc5
SHA1 b449942d73eceafc430a95e8095759a74db6837c
SHA256 2bf87306136fb02e8ed7770bcee23d77dad2ab45fbe70d24f226afc1e236e01f
SHA512 4fed29c1e7bc7f604515b6439e77475ea4f85771ba0d28397f40a3a9866aa881b0c6b9bc524115fa6f213ddd650ff886b43fa620aa4f1269314d6dd20670b505

memory/3028-462-0x0000000000100000-0x0000000000123000-memory.dmp

memory/3028-461-0x000007FEF7F20000-0x000007FEF7F68000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-01 13:53

Reported

2024-02-01 13:56

Platform

win10v2004-20231222-en

Max time kernel

90s

Max time network

92s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\18491242336191.js

Signatures

Strela

stealer strela

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation C:\Windows\system32\wscript.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\system32\rundll32.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4652 wrote to memory of 4932 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\cmd.exe
PID 4652 wrote to memory of 4932 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\cmd.exe
PID 4932 wrote to memory of 1828 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\findstr.exe
PID 4932 wrote to memory of 1828 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\findstr.exe
PID 4932 wrote to memory of 4736 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\certutil.exe
PID 4932 wrote to memory of 4736 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\certutil.exe
PID 4932 wrote to memory of 3552 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe
PID 4932 wrote to memory of 3552 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe
PID 3552 wrote to memory of 3288 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 3552 wrote to memory of 3288 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\18491242336191.js

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /k copy "C:\Users\Admin\AppData\Local\Temp\18491242336191.js" "C:\Users\Admin\AppData\Local\Temp\\belllegal.bat" && "C:\Users\Admin\AppData\Local\Temp\\belllegal.bat"

C:\Windows\system32\findstr.exe

findstr /V carriagerun ""C:\Users\Admin\AppData\Local\Temp\\belllegal.bat""

C:\Windows\system32\certutil.exe

certutil -f -decode timepolish jealousland.dll

C:\Windows\system32\cmd.exe

cmd /c rundll32 jealousland.dll,m

C:\Windows\system32\rundll32.exe

rundll32 jealousland.dll,m

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 172.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\belllegal.bat

MD5 00a488ef84d5c94fcc82506405c1fb20
SHA1 660c34be4fc2cfad57705d5a607bedfdf5597e7d
SHA256 9b24c97d6400214ccfdf2ef5bdc89de58bbe54745b7caa03d0ca0f7861c985e1
SHA512 8f9370c6f35c7baaca1e8390843cceaf9a775f799cd44736072b78532a11df239cc64cde336bb033399d37e2f8e4d7aa7f82e21226b2f6b33fb2246db48e6484

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

MD5 5b1835d9b309c246b6e269a3143653c3
SHA1 0a872a6f63eb8e100979821bade186f5d73d6dbe
SHA256 f0b862a5c62cc552e14a345efbf0816e37078f312bd46c3663a4be9fd911a893
SHA512 78228fc71a8152f1c3ee157db379033211eb63857a0520755505f2b1f0f5c0ab952ff536d96b85b1ef2f6c7ecc56d742f19888c2039212fb947890a1bbdc8360

C:\Users\Admin\AppData\Local\Temp\jealousland.dll

MD5 363e3e964b6d304e8110b1a2eb61fdc5
SHA1 b449942d73eceafc430a95e8095759a74db6837c
SHA256 2bf87306136fb02e8ed7770bcee23d77dad2ab45fbe70d24f226afc1e236e01f
SHA512 4fed29c1e7bc7f604515b6439e77475ea4f85771ba0d28397f40a3a9866aa881b0c6b9bc524115fa6f213ddd650ff886b43fa620aa4f1269314d6dd20670b505

memory/3288-458-0x00007FF8701D0000-0x00007FF870218000-memory.dmp

memory/3288-459-0x00000200806B0000-0x00000200806D3000-memory.dmp