Malware Analysis Report

2025-01-22 18:55

Sample ID 240309-vvrehsdb58
Target bc5ec041f77b4e78ea39b2b5476f4a88
SHA256 a30b3f060dc69295c6fb8da9bd75c29c6184c8a1658d1c7b8a90d4b23fe22617
Tags
isfb gozi
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

a30b3f060dc69295c6fb8da9bd75c29c6184c8a1658d1c7b8a90d4b23fe22617

Threat Level: Known bad

The file bc5ec041f77b4e78ea39b2b5476f4a88 was found to be: Known bad.

Malicious Activity Summary

isfb gozi

Gozi family

Loads dropped DLL

Deletes itself

Executes dropped EXE

Legitimate hosting services abused for malware hosting/C2

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Suspicious behavior: RenamesItself

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-09 17:18

Signatures

Gozi family

gozi

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-09 17:18

Reported

2024-03-09 17:21

Platform

win7-20240221-en

Max time kernel

118s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Creates scheduled task(s)

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe

"C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe"

C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe

C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe

C:\Windows\SysWOW64\schtasks.exe

schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe" /TN Google_Trk_Updater /F

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.JAMZTtLT31.com udp
US 8.8.8.8:53 w.google.com udp
GB 172.217.16.238:80 w.google.com tcp
US 8.8.8.8:53 pastebin.com udp
US 104.20.67.143:80 pastebin.com tcp
US 104.20.67.143:443 pastebin.com tcp

Files

memory/3020-0-0x0000000000400000-0x00000000004B7000-memory.dmp

memory/3020-1-0x00000000014C0000-0x0000000001577000-memory.dmp

memory/3020-2-0x0000000000400000-0x0000000000466000-memory.dmp

\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe

MD5 6945ee5efdaa25d473a320a5951dc8d4
SHA1 bd57eb335b4123e9088c8e0ebe707119f4a79c73
SHA256 5a1a3db5d2d97d51d2e2dcfcd33d046b1451bca910a44dbff02b08ba7af6d4b0
SHA512 016571bfb59b076d532940eaba6b8f13f4a6915e98c550a570864562ddad6b00f853d52dfe99c2d1abb14e08acd07520a8afd4a021a952332a7a3acd91822e90

memory/3020-15-0x0000000002E60000-0x0000000002F17000-memory.dmp

memory/3020-14-0x0000000000400000-0x0000000000466000-memory.dmp

memory/2312-17-0x0000000000400000-0x0000000000466000-memory.dmp

memory/2312-19-0x00000000014C0000-0x0000000001577000-memory.dmp

memory/2312-23-0x0000000000400000-0x000000000045B000-memory.dmp

memory/2312-24-0x0000000001580000-0x00000000015E6000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

MD5 753df6889fd7410a2e9fe333da83a429
SHA1 3c425f16e8267186061dd48ac1c77c122962456e
SHA256 b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78
SHA512 9d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444

C:\Users\Admin\AppData\Local\Temp\Tar7D90.tmp

MD5 dd73cead4b93366cf3465c8cd32e2796
SHA1 74546226dfe9ceb8184651e920d1dbfb432b314e
SHA256 a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22
SHA512 ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-09 17:18

Reported

2024-03-09 17:21

Platform

win10v2004-20240226-en

Max time kernel

144s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Creates scheduled task(s)

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe

"C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe"

C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe

C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe

C:\Windows\SysWOW64\schtasks.exe

schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe" /TN Google_Trk_Updater /F

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=4440 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 20.231.121.79:80 tcp
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 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 www.v8CdFVSq0N.com udp
US 8.8.8.8:53 w.google.com udp
GB 172.217.16.238:80 w.google.com tcp
US 8.8.8.8:53 pastebin.com udp
US 104.20.67.143:80 pastebin.com tcp
US 8.8.8.8:53 238.16.217.172.in-addr.arpa udp
US 104.20.67.143:443 pastebin.com tcp
US 8.8.8.8:53 143.67.20.104.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 172.217.169.10:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 10.169.217.172.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.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 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp

Files

memory/3600-0-0x0000000000400000-0x00000000004B7000-memory.dmp

memory/3600-1-0x0000000001600000-0x00000000016B7000-memory.dmp

memory/3600-2-0x0000000000400000-0x0000000000466000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\bc5ec041f77b4e78ea39b2b5476f4a88.exe

MD5 5550bd934a24c8dc1372dc342393d59d
SHA1 8f0a670e43353ad18d38d3043e0729aea11050b8
SHA256 dcaef06f80d51196456c77f1b0feccdfdded33add704d51f2531205723cae348
SHA512 6b463f15ff0c15b1faf882b2679fabecb712399ce9133da89d1f0a7376ab80bded2ae1c518292bdfc566f0e437d8ed6b17efff4a665acab6c341be5e9fb69df8

memory/3600-11-0x0000000000400000-0x0000000000466000-memory.dmp

memory/1292-13-0x0000000000400000-0x00000000004B7000-memory.dmp

memory/1292-14-0x0000000000400000-0x0000000000466000-memory.dmp

memory/1292-15-0x00000000014C0000-0x0000000001577000-memory.dmp

memory/1292-20-0x0000000001680000-0x00000000016E6000-memory.dmp

memory/1292-21-0x0000000000400000-0x000000000045B000-memory.dmp