Malware Analysis Report

2025-04-14 05:12

Sample ID 250104-n31vlayjet
Target JaffaCakes118_798ebb99f4fe7a8c97f31203b7988b10
SHA256 f91cadded4f5a52828083de1c0584aaff493c32dbe0b8699a507fa77f227aa12
Tags
revengerat discovery stealer trojan
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

f91cadded4f5a52828083de1c0584aaff493c32dbe0b8699a507fa77f227aa12

Threat Level: Known bad

The file JaffaCakes118_798ebb99f4fe7a8c97f31203b7988b10 was found to be: Known bad.

Malicious Activity Summary

revengerat discovery stealer trojan

RevengeRAT

Revengerat family

RevengeRat Executable

Loads dropped DLL

Executes dropped EXE

System Location Discovery: System Language Discovery

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-04 11:56

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-04 11:56

Reported

2025-01-04 11:58

Platform

win7-20240729-en

Max time kernel

16s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_798ebb99f4fe7a8c97f31203b7988b10.exe"

Signatures

RevengeRAT

trojan revengerat

Revengerat family

revengerat

RevengeRat Executable

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\OCS\ocs_v71a.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_798ebb99f4fe7a8c97f31203b7988b10.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_798ebb99f4fe7a8c97f31203b7988b10.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_798ebb99f4fe7a8c97f31203b7988b10.exe"

C:\Users\Admin\AppData\Local\Temp\OCS\ocs_v71a.exe

C:\Users\Admin\AppData\Local\Temp\OCS\ocs_v71a.exe -install -54417261 -chipde -d8bf290ea36a468f92fa71bb25c7b74c - -ChromeBundle -dawhqvtqtftrycwd -459152

Network

Country Destination Domain Proto
US 8.8.8.8:53 thinklabs-ltd.de udp
DE 176.9.175.237:80 thinklabs-ltd.de tcp
US 8.8.8.8:53 bin.download-sponsor.de udp
DE 176.9.175.234:443 bin.download-sponsor.de tcp

Files

\Users\Admin\AppData\Local\Temp\OCS\ocs_v71a.exe

MD5 317ec5f92cfbf04a53e8125b66b3b4af
SHA1 16068b8977b4dc562ae782d91bc009472667e331
SHA256 7612ef3877c3e4e305a6c22941141601b489a73bc088622a40ebd93bee25bae5
SHA512 ed772da641a5c128677c4c285c648c1d8e539c34522b95c14f614797bb0d188571c7c257441d45598809aa3f8b4690bd53230282726e077c86c8d9fe71c1db65

memory/1216-12-0x000007FEF662E000-0x000007FEF662F000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\OCS\dawhqvtqtftrycwd.dat

MD5 a249082fed4a9de72bb52195edae91bc
SHA1 08fe1882efd09aed1924041ebc7bb223da5a892b
SHA256 dca925aaa6cf2b55f1497ed9b0a906d54b805cc5667c15a23e0544d8bb9f10a3
SHA512 8e43696c5bf646c4baa35317cf98d6ab3289264e9ece60375df98ada854384eff90e7fa25818c52c71a0be66ac7a760c4671b8625e9e1b148ffc886015bdfb89

memory/1216-14-0x000007FEF6370000-0x000007FEF6D0D000-memory.dmp

memory/1216-15-0x000007FEF6370000-0x000007FEF6D0D000-memory.dmp

memory/1216-16-0x000007FEF6370000-0x000007FEF6D0D000-memory.dmp

memory/1216-17-0x000007FEF6370000-0x000007FEF6D0D000-memory.dmp

memory/1216-20-0x000007FEF6370000-0x000007FEF6D0D000-memory.dmp

memory/1216-19-0x000007FEF6370000-0x000007FEF6D0D000-memory.dmp

memory/1216-18-0x000007FEF6370000-0x000007FEF6D0D000-memory.dmp

memory/1216-21-0x000007FEF6370000-0x000007FEF6D0D000-memory.dmp

memory/1216-22-0x000007FEF6370000-0x000007FEF6D0D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-04 11:56

Reported

2025-01-04 11:58

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_798ebb99f4fe7a8c97f31203b7988b10.exe"

Signatures

RevengeRAT

trojan revengerat

Revengerat family

revengerat

RevengeRat Executable

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\OCS\ocs_v71a.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_798ebb99f4fe7a8c97f31203b7988b10.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\OCS\ocs_v71a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_798ebb99f4fe7a8c97f31203b7988b10.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_798ebb99f4fe7a8c97f31203b7988b10.exe"

C:\Users\Admin\AppData\Local\Temp\OCS\ocs_v71a.exe

C:\Users\Admin\AppData\Local\Temp\OCS\ocs_v71a.exe -install -54417261 -chipde -d8bf290ea36a468f92fa71bb25c7b74c - -ChromeBundle -qzmyeqwvtstgsfcz -524390

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 60.153.16.2.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 thinklabs-ltd.de udp
DE 176.9.175.237:80 thinklabs-ltd.de tcp
US 8.8.8.8:53 bin.download-sponsor.de udp
DE 176.9.175.234:443 bin.download-sponsor.de tcp
US 8.8.8.8:53 237.175.9.176.in-addr.arpa udp
US 8.8.8.8:53 234.175.9.176.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 21.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.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\OCS\ocs_v71a.exe

MD5 317ec5f92cfbf04a53e8125b66b3b4af
SHA1 16068b8977b4dc562ae782d91bc009472667e331
SHA256 7612ef3877c3e4e305a6c22941141601b489a73bc088622a40ebd93bee25bae5
SHA512 ed772da641a5c128677c4c285c648c1d8e539c34522b95c14f614797bb0d188571c7c257441d45598809aa3f8b4690bd53230282726e077c86c8d9fe71c1db65

memory/3924-8-0x00007FFE44115000-0x00007FFE44116000-memory.dmp

memory/3924-9-0x000000001BEE0000-0x000000001C3AE000-memory.dmp

memory/3924-10-0x00007FFE43E60000-0x00007FFE44801000-memory.dmp

memory/3924-11-0x000000001C3B0000-0x000000001C456000-memory.dmp

memory/3924-12-0x000000001C500000-0x000000001C59C000-memory.dmp

memory/3924-13-0x0000000001300000-0x0000000001308000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\OCS\qzmyeqwvtstgsfcz.dat

MD5 a249082fed4a9de72bb52195edae91bc
SHA1 08fe1882efd09aed1924041ebc7bb223da5a892b
SHA256 dca925aaa6cf2b55f1497ed9b0a906d54b805cc5667c15a23e0544d8bb9f10a3
SHA512 8e43696c5bf646c4baa35317cf98d6ab3289264e9ece60375df98ada854384eff90e7fa25818c52c71a0be66ac7a760c4671b8625e9e1b148ffc886015bdfb89

memory/3924-15-0x00007FFE43E60000-0x00007FFE44801000-memory.dmp

memory/3924-16-0x00007FFE43E60000-0x00007FFE44801000-memory.dmp

memory/3924-17-0x00007FFE43E60000-0x00007FFE44801000-memory.dmp

memory/3924-18-0x00007FFE43E60000-0x00007FFE44801000-memory.dmp

memory/3924-19-0x00007FFE43E60000-0x00007FFE44801000-memory.dmp

memory/3924-20-0x00007FFE43E60000-0x00007FFE44801000-memory.dmp

memory/3924-21-0x00007FFE43E60000-0x00007FFE44801000-memory.dmp

memory/3924-22-0x00007FFE44115000-0x00007FFE44116000-memory.dmp

memory/3924-23-0x00007FFE43E60000-0x00007FFE44801000-memory.dmp

memory/3924-25-0x00007FFE43E60000-0x00007FFE44801000-memory.dmp