Analysis
- max time kernel
153s - max time network
147s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
29/09/2021, 07:45
Static task
static1
Behavioral task
behavioral1
Sample
7630eb99cd2f4a7013bb742dc2b4619ec632924cd3d1a2bdc078b946b7c3efa7.dll
Resource
win7v20210408
0 signatures
0 seconds
General
- Target 7630eb99cd2f4a7013bb742dc2b4619ec632924cd3d1a2bdc078b946b7c3efa7.dll
- Size 1.1MB
- Sample210929-jldxaaecdk
- SHA256 7630eb99cd2f4a7013bb742dc2b4619ec632924cd3d1a2bdc078b946b7c3efa7
- MD5 c3ab807b3600d62bb49c3410fe3fbba6
- SHA1 616110c1b21e1922361ea02eba30115abae45b12
- SHA512 d24ec0c84eaed46501b3c728eb753eb50762f3998181d5f6c88b287a5ae86e0e8f5615f90708f6f4d70a577159f96de78a903865463d3b6384e4660a673e6519
- MD5 SHA1 SHA512
Malware Config
Signatures
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resource yara_rule behavioral2/memory/3704-115-0x0000000140000000-0x0000000140116000-memory.dmp dridex_payload behavioral2/memory/1412-165-0x0000000140000000-0x0000000140118000-memory.dmp dridex_payload -
resource yara_rule behavioral2/memory/2888-121-0x0000000001010000-0x0000000001011000-memory.dmp dridex_stager_shellcode - Executes dropped EXE 3 IoCs
pid Process 1412 irftp.exe 4408 irftp.exe 4512 dialer.exe - Loads dropped DLL 3 IoCs
pid Process 1412 irftp.exe 4408 irftp.exe 4512 dialer.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wjvmqhmsyzhtvy = "C:\\Users\\Admin\\AppData\\Roaming\\MICROS~1\\INTERN~1\\UserData\\otask\\irftp.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 irftp.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA irftp.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA dialer.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3704 rundll32.exe 3704 rundll32.exe 3704 rundll32.exe 3704 rundll32.exe 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found 2888 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2888 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2888 wrote to memory of 1628 2888 Process not Found 70 PID 2888 wrote to memory of 1628 2888 Process not Found 70 PID 2888 wrote to memory of 1412 2888 Process not Found 71 PID 2888 wrote to memory of 1412 2888 Process not Found 71 PID 2888 wrote to memory of 4400 2888 Process not Found 72 PID 2888 wrote to memory of 4400 2888 Process not Found 72 PID 2888 wrote to memory of 4408 2888 Process not Found 73 PID 2888 wrote to memory of 4408 2888 Process not Found 73 PID 2888 wrote to memory of 4532 2888 Process not Found 74 PID 2888 wrote to memory of 4532 2888 Process not Found 74 PID 2888 wrote to memory of 4512 2888 Process not Found 75 PID 2888 wrote to memory of 4512 2888 Process not Found 75
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\7630eb99cd2f4a7013bb742dc2b4619ec632924cd3d1a2bdc078b946b7c3efa7.dll,#11⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:3704
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C:\Windows\system32\irftp.exeC:\Windows\system32\irftp.exe1⤵PID:1628
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C:\Users\Admin\AppData\Local\ftNW6s\irftp.exeC:\Users\Admin\AppData\Local\ftNW6s\irftp.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:1412
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C:\Windows\system32\irftp.exeC:\Windows\system32\irftp.exe1⤵PID:4400
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C:\Users\Admin\AppData\Local\Pw55Q1aZP\irftp.exeC:\Users\Admin\AppData\Local\Pw55Q1aZP\irftp.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4408
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C:\Windows\system32\dialer.exeC:\Windows\system32\dialer.exe1⤵PID:4532
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C:\Users\Admin\AppData\Local\fjZ\dialer.exeC:\Users\Admin\AppData\Local\fjZ\dialer.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4512