Analysis
- max time kernel
154s - max time network
133s - platform
windows7_x64 - resource
win7-en-20211104 - submitted
26/11/2021, 09:29
Static task
static1
Behavioral task
behavioral1
Sample
31a694cd04044831b2125f6cf16bc9dd342aee9ea89181e1aa302c82951cd956.dll
Resource
win7-en-20211104
0 signatures
0 seconds
General
- Target 31a694cd04044831b2125f6cf16bc9dd342aee9ea89181e1aa302c82951cd956.dll
- Size 1.3MB
- Sample211126-lfxhjsbeeq
- SHA256 31a694cd04044831b2125f6cf16bc9dd342aee9ea89181e1aa302c82951cd956
- MD5 d6d2b7aa9232eeda14644138ddbc6569
- SHA1 6b419ed314f2bc61d236344b4cf302f0e9f2c237
- SHA512 1a8fc090d443475b0a90d5b1aebe0d0e06f3caa3fef851df95070649de7a93c033519afe8df3f56984261b4db46b38b1e008a085e058e78a02ee274d7e45fc14
- MD5 SHA1 SHA512
Malware Config
Signatures
-
resource yara_rule behavioral1/memory/1412-60-0x00000000025D0000-0x00000000025D1000-memory.dmp dridex_stager_shellcode - Executes dropped EXE 3 IoCs
pid Process 1308 EhStorAuthn.exe 1536 StikyNot.exe 1072 osk.exe - Loads dropped DLL 7 IoCs
pid Process 1412 Process not Found 1308 EhStorAuthn.exe 1412 Process not Found 1536 StikyNot.exe 1412 Process not Found 1072 osk.exe 1412 Process not Found - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run\Myzdcwow = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Cookies\\TMu5p\\StikyNot.exe" Process not Found -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA EhStorAuthn.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA StikyNot.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA osk.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 596 rundll32.exe 596 rundll32.exe 596 rundll32.exe 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1308 EhStorAuthn.exe 1308 EhStorAuthn.exe 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1536 StikyNot.exe 1536 StikyNot.exe 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found 1412 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1412 Process not Found - Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 1412 wrote to memory of 1052 1412 Process not Found 28 PID 1412 wrote to memory of 1052 1412 Process not Found 28 PID 1412 wrote to memory of 1052 1412 Process not Found 28 PID 1412 wrote to memory of 1308 1412 Process not Found 29 PID 1412 wrote to memory of 1308 1412 Process not Found 29 PID 1412 wrote to memory of 1308 1412 Process not Found 29 PID 1412 wrote to memory of 1220 1412 Process not Found 30 PID 1412 wrote to memory of 1220 1412 Process not Found 30 PID 1412 wrote to memory of 1220 1412 Process not Found 30 PID 1412 wrote to memory of 1536 1412 Process not Found 31 PID 1412 wrote to memory of 1536 1412 Process not Found 31 PID 1412 wrote to memory of 1536 1412 Process not Found 31 PID 1412 wrote to memory of 928 1412 Process not Found 32 PID 1412 wrote to memory of 928 1412 Process not Found 32 PID 1412 wrote to memory of 928 1412 Process not Found 32 PID 1412 wrote to memory of 1072 1412 Process not Found 33 PID 1412 wrote to memory of 1072 1412 Process not Found 33 PID 1412 wrote to memory of 1072 1412 Process not Found 33
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\31a694cd04044831b2125f6cf16bc9dd342aee9ea89181e1aa302c82951cd956.dll,#11⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:596
-
C:\Windows\system32\EhStorAuthn.exeC:\Windows\system32\EhStorAuthn.exe1⤵PID:1052
-
C:\Users\Admin\AppData\Local\wlHNdT1Kx\EhStorAuthn.exeC:\Users\Admin\AppData\Local\wlHNdT1Kx\EhStorAuthn.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:1308
-
C:\Windows\system32\StikyNot.exeC:\Windows\system32\StikyNot.exe1⤵PID:1220
-
C:\Users\Admin\AppData\Local\5GfuJ\StikyNot.exeC:\Users\Admin\AppData\Local\5GfuJ\StikyNot.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:1536
-
C:\Windows\system32\osk.exeC:\Windows\system32\osk.exe1⤵PID:928
-
C:\Users\Admin\AppData\Local\rTTMG\osk.exeC:\Users\Admin\AppData\Local\rTTMG\osk.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:1072