Analysis
- max time kernel
147s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
17/03/2023, 22:29
General
- Target dd57d3e8aa35f0b8218af7af8f3a65e7.exe
- Size 2.4MB
- Sample230317-2d8e2acc6x
- SHA256 a41e45e14795bb60ef20aa47780ddd8cdc491e7e23c16594a7af91c4f3e817cd
Malware Config
Extracted
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gcleaner
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45.12.253.56
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45.12.253.72
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45.12.253.98
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45.12.253.75
Signatures
- GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Drops file in Program Files directory 9 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Kills process with taskkill 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\dd57d3e8aa35f0b8218af7af8f3a65e7.exe"C:\Users\Admin\AppData\Local\Temp\dd57d3e8aa35f0b8218af7af8f3a65e7.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-RI9MM.tmp\is-7PME2.tmp"C:\Users\Admin\AppData\Local\Temp\is-RI9MM.tmp\is-7PME2.tmp" /SL4 $B004C "C:\Users\Admin\AppData\Local\Temp\dd57d3e8aa35f0b8218af7af8f3a65e7.exe" 2317014 527362⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\FIYsoftFR\FRec317\FRec317.exe"C:\Program Files (x86)\FIYsoftFR\FRec317\FRec317.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\{5cebde14-b1a3-11ed-bd92-806e6f6e6963}\QXzv8rHgZzhod.exe4⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "FRec317.exe" /f & erase "C:\Program Files (x86)\FIYsoftFR\FRec317\FRec317.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "FRec317.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
FRec317.exe
FRec317.exe
dll[1].htm
_iscrypt.dll
is-7PME2.tmp
is-7PME2.tmp
QXzv8rHgZzhod.exe
QXzv8rHgZzhod.exe
memory/1236-133-0x0000000000400000-0x0000000000413000-memory.dmp
memory/1236-200-0x0000000000400000-0x0000000000413000-memory.dmp
memory/1236-171-0x0000000000400000-0x0000000000413000-memory.dmp
memory/1716-148-0x0000000002340000-0x0000000002341000-memory.dmp
memory/1716-179-0x0000000000400000-0x00000000004B4000-memory.dmp
memory/1716-199-0x0000000000400000-0x00000000004B4000-memory.dmp
memory/3928-181-0x0000000000400000-0x0000000001553000-memory.dmp
memory/3928-175-0x0000000010000000-0x000000001001B000-memory.dmp
memory/3928-198-0x0000000000400000-0x0000000001553000-memory.dmp
memory/3928-166-0x0000000000400000-0x0000000001553000-memory.dmp
memory/3928-165-0x0000000000400000-0x0000000001553000-memory.dmp