Malware Analysis Report

2025-01-18 09:31

Sample ID 240325-r9d6ysbb64
Target 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 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

2024-03-25 14:53

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-25 14:53

Reported

2024-03-25 14:55

Platform

win7-20240221-en

Max time kernel

120s

Max time network

125s

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 2140 wrote to memory of 780 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\cmd.exe
PID 2140 wrote to memory of 780 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\cmd.exe
PID 2140 wrote to memory of 780 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\cmd.exe
PID 780 wrote to memory of 3048 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\findstr.exe
PID 780 wrote to memory of 3048 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\findstr.exe
PID 780 wrote to memory of 3048 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\findstr.exe
PID 780 wrote to memory of 2288 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\certutil.exe
PID 780 wrote to memory of 2288 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\certutil.exe
PID 780 wrote to memory of 2288 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\certutil.exe
PID 780 wrote to memory of 2508 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe
PID 780 wrote to memory of 2508 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe
PID 780 wrote to memory of 2508 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe
PID 2508 wrote to memory of 2908 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2508 wrote to memory of 2908 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2508 wrote to memory of 2908 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\belllegal.bat

MD5 9e4898505222d8cbebad1e726de6463b
SHA1 e642d73add9c7a4db7ff91e213ae169f3be47a2d
SHA256 6b2a46bf3aa6963c2cb14af85cb44d15c39ab4d6c3b5f3104a1311813efca406
SHA512 644b087d16fb017c8b73ba784063c07efcd0c391c0e2ff6bbb820606f99c0d1bc686b5c515d5df470ae39065c626b20300d4b465f52fb5da3d871e9a71cd42b1

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/2908-461-0x000007FEF71D0000-0x000007FEF7218000-memory.dmp

memory/2908-462-0x0000000000280000-0x00000000002A3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-25 14:53

Reported

2024-03-25 14:55

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

157s

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-1-5-21-3808065738-1666277613-1125846146-1000\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 4900 wrote to memory of 2940 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\cmd.exe
PID 4900 wrote to memory of 2940 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\cmd.exe
PID 2940 wrote to memory of 3012 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\findstr.exe
PID 2940 wrote to memory of 3012 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\findstr.exe
PID 2940 wrote to memory of 824 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\certutil.exe
PID 2940 wrote to memory of 824 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\certutil.exe
PID 2940 wrote to memory of 1036 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe
PID 2940 wrote to memory of 1036 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\cmd.exe
PID 1036 wrote to memory of 2732 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 1036 wrote to memory of 2732 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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3768 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 177.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 100.5.17.2.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 13.107.253.67:443 tcp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 190.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 196.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 11.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 34.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 9.179.89.13.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/2732-458-0x00000213FF6B0000-0x00000213FF6D3000-memory.dmp

memory/2732-459-0x00007FFFD7810000-0x00007FFFD7858000-memory.dmp