Analysis
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max time kernel
141s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
29-10-2024 16:02
Static task
static1
Behavioral task
behavioral1
Sample
Forreste.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
Forreste.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win7-20241010-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20241007-en
General
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Target
Forreste.exe
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Size
895KB
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MD5
b6bcb5405a50ef97d57ae2b43ad5d01e
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SHA1
2c8288be420bdb1b53438f07cbcdec259f47bd0d
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SHA256
0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f
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SHA512
1a0eeea2ce4608fc4e0ae67b94f6c137de873b5c0da735c22a2e295dd9577aa1f6ba85ecd0193d771289d417a1d9cc758ea5cf8284cf3f2e3272571414cc9391
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SSDEEP
24576:5x+rg0PyXjILtPkoAzuyn/pBF62HnQIQMOKOaeKg:5x+s0PyXjIxPkFzucp22HTzOKOwg
Malware Config
Signatures
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Guloader family
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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Loads dropped DLL 2 IoCs
Processes:
Forreste.exepid process 1000 Forreste.exe 1000 Forreste.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
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Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
Processes:
Forreste.exepid process 1920 Forreste.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
Processes:
Forreste.exeForreste.exepid process 1000 Forreste.exe 1920 Forreste.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Forreste.exedescription pid process target process PID 1000 set thread context of 1920 1000 Forreste.exe Forreste.exe -
Drops file in Program Files directory 1 IoCs
Processes:
Forreste.exedescription ioc process File opened for modification C:\Program Files (x86)\Common Files\Reoil.mul Forreste.exe -
Drops file in Windows directory 6 IoCs
Processes:
Forreste.exedescription ioc process File opened for modification C:\Windows\Fonts\brunsttiderne.tri Forreste.exe File opened for modification C:\Windows\Fonts\Spodium39.int Forreste.exe File opened for modification C:\Windows\Belringernes\Dermatophony.ini Forreste.exe File opened for modification C:\Windows\resources\nringsmiddelet.ini Forreste.exe File opened for modification C:\Windows\resources\stenhjsplanternes\fordreves.ini Forreste.exe File opened for modification C:\Windows\Fonts\karrooers.ini Forreste.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
Forreste.exeForreste.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Forreste.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Forreste.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
Forreste.exepid process 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe 1920 Forreste.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
Forreste.exepid process 1000 Forreste.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
Forreste.exedescription pid process target process PID 1000 wrote to memory of 1920 1000 Forreste.exe Forreste.exe PID 1000 wrote to memory of 1920 1000 Forreste.exe Forreste.exe PID 1000 wrote to memory of 1920 1000 Forreste.exe Forreste.exe PID 1000 wrote to memory of 1920 1000 Forreste.exe Forreste.exe PID 1000 wrote to memory of 1920 1000 Forreste.exe Forreste.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Forreste.exe"C:\Users\Admin\AppData\Local\Temp\Forreste.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1000 -
C:\Users\Admin\AppData\Local\Temp\Forreste.exe"C:\Users\Admin\AppData\Local\Temp\Forreste.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1920
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
11KB
MD5c9473cb90d79a374b2ba6040ca16e45c
SHA1ab95b54f12796dce57210d65f05124a6ed81234a
SHA256b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352
SHA512eafe7d5894622bc21f663bca4dd594392ee0f5b29270b6b56b0187093d6a3a103545464ff6398ad32d2cf15dab79b1f133218ba9ba337ddc01330b5ada804d7b