Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
19/05/2022, 08:27
General
- Target bank_payment-doc.exe
- Size 241KB
- Sample220519-kceb5adaf7
- SHA256 ea02ed6d1f37b7f0fd8b2f02ebf1b41ba2ca81c755f3590f95b509f45f45ae21
Malware Config
Extracted
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xloader
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2.6
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u8pg
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sjpizzeria.com
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americangoodsdepot.com
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presaleratings.com
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yourlifeinmexico.com
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2781chinookwindsdrive.com
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clinic-yoshida.info
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rita22.com
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davidcerda.info
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arjandejong.net
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guodongu.com
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mitosayam.com
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trickers.xyz
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donaotobrown.com
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gvmetales.com
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dwjgnd9.tech
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gxuedujy.com
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igrav.online
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triptoasiam.com
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tothecor.com
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bruecke-purepassionmusic.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Xloader
Xloader is a rebranded version of Formbook malware.
- suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
- suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
- Xloader Payload 3 IoCs
- Executes dropped EXE 2 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 58 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\bank_payment-doc.exe"C:\Users\Admin\AppData\Local\Temp\bank_payment-doc.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exeC:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe C:\Users\Admin\AppData\Local\Temp\khhfof3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exeC:\Users\Admin\AppData\Local\Temp\pcvhuhoxj.exe C:\Users\Admin\AppData\Local\Temp\khhfof4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\explorer.exe"C:\Windows\SysWOW64\explorer.exe"2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V3⤵
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C:\Windows\SysWOW64\cmd.exe/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V3⤵
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
DB1
DB1
khhfof
pcvhuhoxj.exe
pcvhuhoxj.exe
pcvhuhoxj.exe
x1oo7dj593fws9
memory/3056-148-0x0000000008930000-0x0000000008A6A000-memory.dmp
memory/3056-140-0x0000000008420000-0x0000000008504000-memory.dmp
memory/4460-141-0x0000000000A60000-0x0000000000DAA000-memory.dmp
memory/4460-142-0x00000000005D0000-0x00000000005E1000-memory.dmp
memory/4460-139-0x0000000000400000-0x000000000042B000-memory.dmp
memory/4460-136-0x0000000000400000-0x000000000042B000-memory.dmp
memory/4856-144-0x0000000000DD0000-0x0000000001203000-memory.dmp
memory/4856-145-0x0000000000C00000-0x0000000000C2B000-memory.dmp
memory/4856-146-0x0000000003170000-0x00000000034BA000-memory.dmp
memory/4856-147-0x0000000002EA0000-0x0000000002F30000-memory.dmp