Analysis
- max time kernel
148s - max time network
118s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
14/10/2026, 03:58
Behavioral task
behavioral1
Sample
jaffacakes118_not-a-virus.HEUR.AdWare.NSIS.ConvertAd.gen.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
jaffacakes118_not-a-virus.HEUR.AdWare.NSIS.ConvertAd.gen.exe
Resource
win11ltsc2024-20260911-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20260911-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win11ltsc2024-20260911-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/inetc.dll
Resource
win10v2004-20260911-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/inetc.dll
Resource
win11ltsc2024-20260911-en
General
- Target jaffacakes118_not-a-virus.HEUR.AdWare.NSIS.ConvertAd.gen.exe
- Size 59KB
- Sample261014-ejxt6afy7k
- SHA256 f549203d84a01bef31898cb530278d9508e5f212e0d679bb575efc013e5628ff
- MD5 4542ad83cbc134dc607ad6ed7e76f190
- SHA1 064b02034f53b5318ca0c9cad278444721f0150a
- SHA512 858b7e51eb3762836c80690615d462bfe6f35fef1ecd3af72c857434c60d84e59c7c0915667f8d3e20c7308814fb47685fe1c1c12d810c5e7477c7fcc72fce66
- SSDEEP 1536:jQpQ5EP0ijnRTXJtMSfwxmWMwjmCm4uLr8hBOZH/:jQIURTXJtMGww6jh0r7
- TLSH T12453C05A32C584BFD5A35B310A779BBADBF7E305251145436F902FBB2D31283DA262C2
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Deletes itself 1 TTPs 1 IoCs
pid Process 3780 Au_.exe - Executes dropped EXE 1 IoCs
pid Process 3780 Au_.exe - Loads dropped DLL 1 IoCs
pid Process 3780 Au_.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname Au_.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain Au_.exe - System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language jaffacakes118_not-a-virus.HEUR.AdWare.NSIS.ConvertAd.gen.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Au_.exe - NSIS installer 2 IoCs
resource yara_rule behavioral2/files/0x000c00000001c606-0.dat nsis_installer_1 behavioral2/files/0x000c00000001c606-0.dat nsis_installer_2 - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 3604 wrote to memory of 3780 3604 jaffacakes118_not-a-virus.HEUR.AdWare.NSIS.ConvertAd.gen.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\jaffacakes118_not-a-virus.HEUR.AdWare.NSIS.ConvertAd.gen.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_not-a-virus.HEUR.AdWare.NSIS.ConvertAd.gen.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3604 -
C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe"C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\2⤵
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:3780
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\nsi2FF3.tmp\inetc.dll
- Size 20KB
- SHA256 096a4dc5150f631b4d4d10cae07ef0974dda205b174399f46209265e89c2c999
- MD5 f02155fa3e59a8fc48a74a236b2bb42e
- SHA1 6d76ee8f86fb29f3352c9546250d940f1a476fb8
- SHA512 8be78e88c5ef2cd01713f7b5154cfdeea65605cc5d110522375884eeec6bad68616a4058356726cbbd15d28b42914864045f0587e1e49a4e18336f06c1c73399
- SSDEEP 384:voJLJVqG5WLJgu/Emx1Ywxd2ZmX66vwUhU7ya4LC0Ac9khYLMkIX0+Gv8gcLom7:AJVkN8mHYwxdWmX3wUhUua4LeT7
- TLSH T1E7921B02AF572AF3D36A4430F42C23574ABEAE751421648766F32FCD186A147FB34722
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\nsn2FC2.tmp
- Size 136KB
- SHA256 d28476048475dfe1f9d67c882fe079d55827e13ed3c3baba085d99df8cc5ed79
- MD5 e6ad21a0143ec92319324cd79934e791
- SHA1 7bd49a1e679b95ee2c91f26ae169d2c2d546b25d
- SHA512 8c4493524e1bd6944d2b39f1138dc6b694970766c93cbce9b18f44a051658a9d2b75e2e57c112738c1c86b3b917ef41861467873f94b3d2439a5dd16b75c3207
- SSDEEP 1536:cYqE7sPlpxSwNOYW5tHUF+JIfbm2J2N8uxwmX3wYdCT:zSDWnHr2fi/hwmXpK
- TLSH T1BFD34E81BBE5DFF6D85A9733586BA31F27E0C8A29B02C35B2511E90C6DB32875D5E070
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
- Size 59KB
- SHA256 f549203d84a01bef31898cb530278d9508e5f212e0d679bb575efc013e5628ff
- MD5 4542ad83cbc134dc607ad6ed7e76f190
- SHA1 064b02034f53b5318ca0c9cad278444721f0150a
- SHA512 858b7e51eb3762836c80690615d462bfe6f35fef1ecd3af72c857434c60d84e59c7c0915667f8d3e20c7308814fb47685fe1c1c12d810c5e7477c7fcc72fce66
- SSDEEP 1536:jQpQ5EP0ijnRTXJtMSfwxmWMwjmCm4uLr8hBOZH/:jQIURTXJtMGww6jh0r7
- TLSH T12453C05A32C584BFD5A35B310A779BBADBF7E305251145436F902FBB2D31283DA262C2
- MD5 SHA1 SHA512 SSDEEP TLSH