Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
28/06/2022, 10:21
General
- Target shipping docs.exe
- Size 563KB
- Sample220628-mdncjaggbr
- SHA256 bb76e427660942cdf5c2f684ed7bcdf2be26e53d12adca57ee7757dd2ce4a9c9
Malware Config
Extracted
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xloader
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2.9
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gfv7
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hd4AZDZ3XeSkZ9w0NRn2+JU=
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6iAxmGKdumxFEgwp
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jM6QcxNUSeCKaUdvvh3g9mffhosQ
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d4CC0LS0DjTJS8FdXqd3soM=
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S1LPlXEIJY52Og==
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doeO7AimsF0NEvFgnIV5
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W2TlzH/byHtUU3B7tw==
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Y2RAbyZjex2qj6GQv4Q=
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ftoOsCpZdfmALQ==
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4kqL8v/6rDj8Ohs/wAjkb0gD5Gfiww==
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8mVs/AkvwLnIWp4=
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yfqAazgHioT8b9yHSKpLDtgY
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EyWD5F+Wu3L0xq/VJXgdlnFvBDdUz5WM
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jn9ty+pdRNdtcDhJ5k8nwZofm4EJ
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s9XVNv4/aRDBUx4w
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+vHFE7Fw1rnIWp4=
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wC395Yvi6G/3yoWRGW1USxzshi3Dyw==
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jcbufIN91gHAUK1RYUMYIdyqpDlUz5WM
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iIyoIvZNXwPNmBlBxGk6+A==
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C/hTD8h/KWLiMW4Mt/joXyz23Q==
Signatures
- 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 4 IoCs
- Adds policy Run key to start application 2 TTPs 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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
- Drops file in Program Files directory 1 IoCs
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 48 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\shipping docs.exe"C:\Users\Admin\AppData\Local\Temp\shipping docs.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\shipping docs.exe"{path}"3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\help.exe"C:\Windows\SysWOW64\help.exe"2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- 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 del "C:\Users\Admin\AppData\Local\Temp\shipping docs.exe"3⤵
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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
memory/1552-150-0x0000000000CA0000-0x0000000000CCC000-memory.dmp
memory/1552-148-0x0000000001260000-0x00000000012F0000-memory.dmp
memory/1552-147-0x00000000013A0000-0x00000000016EA000-memory.dmp
memory/1552-145-0x0000000000CA0000-0x0000000000CCC000-memory.dmp
memory/1552-144-0x0000000000070000-0x0000000000077000-memory.dmp
memory/2848-149-0x0000000008CD0000-0x0000000008DE2000-memory.dmp
memory/2848-142-0x0000000008A90000-0x0000000008BFB000-memory.dmp
memory/2848-151-0x0000000008CD0000-0x0000000008DE2000-memory.dmp
memory/4236-134-0x0000000004E70000-0x0000000004E7A000-memory.dmp
memory/4236-131-0x0000000004DA0000-0x0000000004E3C000-memory.dmp
memory/4236-132-0x0000000005460000-0x0000000005A04000-memory.dmp
memory/4236-133-0x0000000004F50000-0x0000000004FE2000-memory.dmp
memory/4236-135-0x0000000005140000-0x0000000005196000-memory.dmp
memory/4236-130-0x00000000003B0000-0x0000000000444000-memory.dmp
memory/4528-139-0x0000000000400000-0x000000000042C000-memory.dmp
memory/4528-137-0x0000000000400000-0x000000000042C000-memory.dmp
memory/4528-140-0x0000000001460000-0x00000000017AA000-memory.dmp
memory/4528-141-0x0000000000F10000-0x0000000000F21000-memory.dmp