Analysis
- max time kernel
158s - max time network
165s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
13/10/2022, 16:18
General
- Target ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe
- Size 945KB
- Sample221013-tryhzschak
- SHA256 a942ff27c44b844b9b4b6c77a43fc5d454c009c8dc649cd381ca7d3a9e23792b
Malware Config
Extracted
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formbook
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5pdf
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ImkB41yxewa+HeQyPpDm
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cLnVt4DNZCL7QEV5KG7giA==
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OIEUzLUFkDn8y4abGEtC4yglSTX4
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EqHHULn+zpNozLr4ibEAuwM=
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evmLCwphcPbQTMEOmOyOivz3oA==
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itXoy64T3qaBgfZMZ4hP7x4=
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11lkKSydVQazaCfB
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rjVa6Vuxhm7o0DaMVKRiAEG548hjbXUh
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A5LGUb4V4HhTGw5J2kbJWt+1TcZ/lwk=
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Z/IjCQhZrlVCQyl3LzzkkQ==
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6S3Gn/1WV9DAuTpo8FyBEyDvpw==
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RZOeKrIJoj4kjlSGfuE/3ZSf
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Roivd82k8rJ8
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fwWrgboRZx7FLOUyPpDm
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aOsu9kWm5IZ+Mforn+g=
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q/+gMjuW2IJrbFCKBUzDT+Y7zBw=
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Za7YfdYb33L3lELL
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PX2kfQd1toOMfCutdLEAuwM=
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qUFE/vlKjo1rXujioun6vQA=
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xyUrsDOTXhbIrl7ejrEAuwM=
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 44 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of WriteProcessMemory 18 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe"C:\Users\Admin\AppData\Local\Temp\ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe"2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gefoYh.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gefoYh" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAD47.tmp"3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe"C:\Users\Admin\AppData\Local\Temp\ORDER REQUEST, ISO, TAX DOC.COMPANY DOC.exe"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\svchost.exe"C:\Windows\SysWOW64\svchost.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:\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
Loading Replay Monitor...
Downloads
tmpAD47.tmp
memory/2940-174-0x0000000008550000-0x0000000008612000-memory.dmp
memory/2940-172-0x0000000008550000-0x0000000008612000-memory.dmp
memory/2940-153-0x0000000003310000-0x00000000033F6000-memory.dmp
memory/3060-166-0x0000000007490000-0x0000000007526000-memory.dmp
memory/3060-161-0x0000000007280000-0x000000000728A000-memory.dmp
memory/3060-168-0x0000000007440000-0x000000000744E000-memory.dmp
memory/3060-140-0x0000000002600000-0x0000000002636000-memory.dmp
memory/3060-169-0x0000000007550000-0x000000000756A000-memory.dmp
memory/3060-155-0x00000000064D0000-0x0000000006502000-memory.dmp
memory/3060-143-0x0000000005250000-0x0000000005878000-memory.dmp
memory/3060-159-0x0000000007210000-0x000000000722A000-memory.dmp
memory/3060-158-0x0000000007860000-0x0000000007EDA000-memory.dmp
memory/3060-148-0x0000000005040000-0x0000000005062000-memory.dmp
memory/3060-149-0x00000000051E0000-0x0000000005246000-memory.dmp
memory/3060-157-0x00000000064B0000-0x00000000064CE000-memory.dmp
memory/3060-156-0x0000000071C60000-0x0000000071CAC000-memory.dmp
memory/3060-170-0x0000000007530000-0x0000000007538000-memory.dmp
memory/3060-154-0x0000000005F10000-0x0000000005F2E000-memory.dmp
memory/4140-164-0x00000000008B0000-0x00000000008BE000-memory.dmp
memory/4140-165-0x0000000000810000-0x000000000083D000-memory.dmp
memory/4140-173-0x0000000000810000-0x000000000083D000-memory.dmp
memory/4140-167-0x0000000001300000-0x000000000164A000-memory.dmp
memory/4140-171-0x0000000000F40000-0x0000000000FCF000-memory.dmp
memory/4364-146-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4364-144-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4364-163-0x0000000000401000-0x000000000042F000-memory.dmp
memory/4364-152-0x0000000000DE0000-0x0000000000DF0000-memory.dmp
memory/4364-162-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4364-147-0x0000000000401000-0x000000000042F000-memory.dmp
memory/4364-151-0x00000000012F0000-0x000000000163A000-memory.dmp
memory/4744-132-0x0000000000F80000-0x0000000001072000-memory.dmp
memory/4744-135-0x0000000005A30000-0x0000000005A3A000-memory.dmp
memory/4744-136-0x000000000B060000-0x000000000B0FC000-memory.dmp
memory/4744-134-0x0000000005AB0000-0x0000000005B42000-memory.dmp
memory/4744-137-0x000000000B470000-0x000000000B4D6000-memory.dmp
memory/4744-133-0x0000000006060000-0x0000000006604000-memory.dmp