Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
08/06/2026, 23:23
Behavioral task
behavioral1
Sample
tmpkk7zu0y2.exe
Resource
win10ltsc2021-20260513-en
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
tmpkk7zu0y2.exe
Resource
win10v2004-20260513-en
12 signatures
150 seconds
General
- Target tmpkk7zu0y2.exe
- Size 113KB
- Sample260608-3dapfag12l
- SHA256 a47a7ef6547ef1feeffaf7093a72dd28ccc7294e35c0af536df1a9dc2052839c
- MD5 32d01a5aa09c4f78b7b4fdad5d9ec8c0
- SHA1 d86590ce6719fd609fa3c0a1f5577726807fb465
- SHA512 ff5e2ddf8a47a514b1766d4158c7b9e4f731f2692cec07f13b2dcd2d576e734ab7d630730c370c6e03cfd163fce4be92b346a2df90fbfda99a4f585e05cecb15
- SSDEEP 1536:BiLOvRmmQegJfBbmAQ256/ZrwWhwqjhurmKFcbL86WV0E:BiyvRmDLs/ZrwWjjAqGcfzWH
- TLSH T11FB34B62F204E89BE817D8F29919CD3164A37DBC48A0455E32D97F6D58B3AD30859F0F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4216 bin.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-668679576-120646659-2289335452-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EB3FD86C = "C:\\Users\\Admin\\AppData\\Roaming\\EB3FD86C\\bin.exe" winver.exe -
resource yara_rule behavioral2/memory/2476-0-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/memory/4216-24-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/files/0x0007000000024686-22.dat upx - Program crash 1 IoCs
pid pid_target Process procid_target 3300 1612 WerFault.exe 90 - System Location Discovery: System Language Discovery 1 TTPs 3 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 tmpkk7zu0y2.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winver.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language bin.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1612 winver.exe 1612 winver.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3288 Explorer.EXE - Suspicious use of AdjustPrivilegeToken 16 IoCs
description pid Process Token: SeShutdownPrivilege 3288 Explorer.EXE Token: SeCreatePagefilePrivilege 3288 Explorer.EXE Token: SeShutdownPrivilege 3288 Explorer.EXE Token: SeCreatePagefilePrivilege 3288 Explorer.EXE Token: SeShutdownPrivilege 3288 Explorer.EXE Token: SeCreatePagefilePrivilege 3288 Explorer.EXE Token: SeShutdownPrivilege 3288 Explorer.EXE Token: SeCreatePagefilePrivilege 3288 Explorer.EXE Token: SeShutdownPrivilege 3288 Explorer.EXE Token: SeCreatePagefilePrivilege 3288 Explorer.EXE Token: SeShutdownPrivilege 3288 Explorer.EXE Token: SeCreatePagefilePrivilege 3288 Explorer.EXE Token: SeShutdownPrivilege 3288 Explorer.EXE Token: SeCreatePagefilePrivilege 3288 Explorer.EXE Token: SeShutdownPrivilege 3288 Explorer.EXE Token: SeCreatePagefilePrivilege 3288 Explorer.EXE - Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 1612 winver.exe 3288 Explorer.EXE 3288 Explorer.EXE - Suspicious use of UnmapMainImage 1 IoCs
pid Process 3288 Explorer.EXE - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2476 wrote to memory of 1612 2476 tmpkk7zu0y2.exe 90 PID 1612 wrote to memory of 3288 1612 winver.exe 55 PID 3288 wrote to memory of 4056 3288 Explorer.EXE PID 3288 wrote to memory of 4056 3288 Explorer.EXE PID 4056 wrote to memory of 4216 4056 Process not Found 94 PID 4056 wrote to memory of 4216 4056 Process not Found 94 PID 1612 wrote to memory of 2684 1612 winver.exe 45
Processes
-
C:\Windows\system32\sihost.exesihost.exe1⤵PID:2684
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3288 -
C:\Users\Admin\AppData\Local\Temp\tmpkk7zu0y2.exe"C:\Users\Admin\AppData\Local\Temp\tmpkk7zu0y2.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2476 -
C:\Windows\SysWOW64\winver.exewinver3⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1612 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1612 -s 3524⤵
- Program crash
PID:3300
-
-
-
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C:\Users\Admin\AppData\Roaming\EB3FD86C\bin.exeC:\Users\Admin\AppData\Roaming\EB3FD86C\bin.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4216
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1612 -ip 16121⤵PID:4848
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\EB3FD86C\bin.exe
- Size 113KB
- SHA256 afa506a5ef6b48afab45a5369cecaa79e62c30a9092773fab51cc956e354f121
- MD5 89b3f68cb62daf608e65dfa530076c16
- SHA1 314440809252b2a6b27a006c19bdde06e120ccda
- SHA512 0dac5ff024cc67b4c6d83795b774ab10042b360bafcbbf37cef90fbacfbf9f545cac0e1ad475a50f469c987ea38454fa9b2ad668c90b1eeaf8e19f30050051d5
- SSDEEP 1536:liLOvRmmQegJfBbmAQ256/ZrwWhwqjhurmKFcbL86WV0E:liyvRmDLs/ZrwWjjAqGcfzWH
- TLSH T101B34B62F204E89BE817D8F29919CD3164A37DBC88A0455E32D97F6D58B3AD30459F0F
- MD5 SHA1 SHA512 SSDEEP TLSH