Overview
overview
7Static
static
3cjzg_mayiyx.exe
windows10-2004-x64
7cjzg_mayiyx.exe
windows11-ltsc_2024-x64
7$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...LL.dll
windows11-ltsc_2024-x64
3$PLUGINSDI...ns.dll
windows10-2004-x64
3$PLUGINSDI...ns.dll
windows11-ltsc_2024-x64
3$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...LL.dll
windows11-ltsc_2024-x64
3$PLUGINSDI...ls.dll
windows10-2004-x64
3$PLUGINSDI...ls.dll
windows11-ltsc_2024-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows11-ltsc_2024-x64
3cjzg.exe
windows10-2004-x64
3cjzg.exe
windows11-ltsc_2024-x64
3uninst.exe
windows10-2004-x64
7uninst.exe
windows11-ltsc_2024-x64
7$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...LL.dll
windows11-ltsc_2024-x64
3$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...LL.dll
windows11-ltsc_2024-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows11-ltsc_2024-x64
3$PLUGINSDIR/inetc.dll
windows10-2004-x64
3$PLUGINSDIR/inetc.dll
windows11-ltsc_2024-x64
3$PLUGINSDI...gs.dll
windows10-2004-x64
3$PLUGINSDI...gs.dll
windows11-ltsc_2024-x64
3Analysis
- max time kernel
149s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
30/07/2026, 06:33
Behavioral task
behavioral1
Sample
cjzg_mayiyx.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
cjzg_mayiyx.exe
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/FindProcDLL.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/FindProcDLL.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral7
Sample
$PLUGINSDIR/KillProcDLL.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral8
Sample
$PLUGINSDIR/KillProcDLL.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral9
Sample
$PLUGINSDIR/StdUtils.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral10
Sample
$PLUGINSDIR/StdUtils.dll
Resource
win11ltsc2024-20260710-en
Behavioral task
behavioral11
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral12
Sample
$PLUGINSDIR/System.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral13
Sample
cjzg.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral14
Sample
cjzg.exe
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral15
Sample
uninst.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral16
Sample
uninst.exe
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral17
Sample
$PLUGINSDIR/FindProcDLL.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral18
Sample
$PLUGINSDIR/FindProcDLL.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral19
Sample
$PLUGINSDIR/KillProcDLL.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral20
Sample
$PLUGINSDIR/KillProcDLL.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral21
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral22
Sample
$PLUGINSDIR/System.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral23
Sample
$PLUGINSDIR/inetc.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral24
Sample
$PLUGINSDIR/inetc.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral25
Sample
$PLUGINSDIR/nsDialogs.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral26
Sample
$PLUGINSDIR/nsDialogs.dll
Resource
win11ltsc2024-20260709-en
General
- Target uninst.exe
- Size 411KB
- Sample260730-hbbhqssdlf
- SHA256 6ee62e35376ca8e4b1caf03b41dcd2f393245afed3deca80fddc4d2b73e9753f
- MD5 8f2dbb8d28c4c5cf87c4ce5e8560fc38
- SHA1 27d065dba124906c89a6cd3a29e45fc428b466a2
- SHA512 6083bb259bd465cade5a35a18f28fe47532d610ed4167fa432576fb7cf4149798d07501a691c9faab39795bcd38551f13dbe3ab0b754cac5e29c3f46772eb75f
- SSDEEP 6144:c8LxBCHR5mV1TiyuqnODoRPN5OuYQ4uA8zVidxpPnbDZH37Kggk0:2x5OTiOOD6N5fYqArblnxH3H0
- TLSH T1F49401027FD091F3D6910A31357DBB36B7B7FEA41A0643436395BEAE1CB52432E2524A
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Deletes itself 1 IoCs
pid Process 4516 Au_.exe - Executes dropped EXE 1 IoCs
pid Process 4516 Au_.exe - Loads dropped DLL 2 IoCs
pid Process 4516 Au_.exe 4516 Au_.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 uninst.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Au_.exe - NSIS installer 2 IoCs
resource yara_rule behavioral15/files/0x0008000000024509-3.dat nsis_installer_1 behavioral15/files/0x0008000000024509-3.dat nsis_installer_2 - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4516 Au_.exe 4516 Au_.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2284 wrote to memory of 4516 2284 uninst.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\uninst.exe"C:\Users\Admin\AppData\Local\Temp\uninst.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2284 -
C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe"C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\2⤵
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4516
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\nsj757A.tmp\FindProcDLL.dll
- Size 3KB
- SHA256 0fa04f06a6de18d316832086891e9c23ae606d7784d5d5676385839b21ca2758
- MD5 8614c450637267afacad1645e23ba24a
- SHA1 e7b7b09b5bbc13e910aa36316d9cc5fc5d4dcdc2
- SHA512 af46cd679097584ff9a1d894a729b6397f4b3af17dff3e6f07bef257bc7e48ffa341d82daf298616cd5df1450fc5ab7435cacb70f27302b6db193f01a9f8391b
- TLSH T1AE717387378506B7D08006303089BCAA3B9E9A350F5B59BFD6DBA99F7C641F4E134706
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\nsj757A.tmp\inetc.dll
- Size 20KB
- SHA256 6d6ddc0d2b7d59eb91be44939457858ced5eb23cf4aa93ef33bb600eb28de6f6
- MD5 50fdadda3e993688401f6f1108fabdb4
- SHA1 04a9ae55d0fb726be49809582cea41d75bf22a9a
- SHA512 e9628870feea8c3aaefe22a2af41cf34b1c1778c4a0e81d069f50553ce1a23f68a0ba74b296420b2be92425d4995a43e51c018c2e8197ec2ec39305e87c56be8
- SSDEEP 384:jQB2ZUVHUxgoJX0eBA6PcH85db+ya9cC0Ac9khYLMkIX0+G5xgZmT+m//a:j/UFeJ5S6PHLNa9cFam/
- TLSH T1A992F906AE592AF3E3654930B86C3707469EAE31346154876AE32FC92839257FA37743
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe
- Size 411KB
- SHA256 6ee62e35376ca8e4b1caf03b41dcd2f393245afed3deca80fddc4d2b73e9753f
- MD5 8f2dbb8d28c4c5cf87c4ce5e8560fc38
- SHA1 27d065dba124906c89a6cd3a29e45fc428b466a2
- SHA512 6083bb259bd465cade5a35a18f28fe47532d610ed4167fa432576fb7cf4149798d07501a691c9faab39795bcd38551f13dbe3ab0b754cac5e29c3f46772eb75f
- SSDEEP 6144:c8LxBCHR5mV1TiyuqnODoRPN5OuYQ4uA8zVidxpPnbDZH37Kggk0:2x5OTiOOD6N5fYqArblnxH3H0
- TLSH T1F49401027FD091F3D6910A31357DBB36B7B7FEA41A0643436395BEAE1CB52432E2524A
- MD5 SHA1 SHA512 SSDEEP TLSH