Analysis
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max time kernel
107s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
30-03-2023 01:52
Static task
static1
Behavioral task
behavioral1
Sample
4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1.exe
Resource
win7-20230220-en
General
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Target
4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1.exe
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Size
1.9MB
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MD5
c707563d073332ea3c40d15197b25de2
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SHA1
425a9f25d638e5ae791d4ec0969b5f119afd9043
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SHA256
4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1
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SHA512
b89fe8fae2a1af0d50c26123e02a7c0301e34815f9796150305dfbb61d73d9000f60450dca2623d2614cb9652f204bf87c36ff2703f5aeb07107139c9f133be9
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SSDEEP
49152:EGlJfsUsCSwYqUGz+1yQMYhIcyYueJnf9zV9Rg0IafR/5dlLYp:5NlFTUw+wpx9qf9B9a0IaffPYp
Malware Config
Extracted
gcleaner
45.12.253.56
45.12.253.72
45.12.253.98
45.12.253.75
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
FRec328.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation FRec328.exe -
Executes dropped EXE 3 IoCs
Processes:
is-V4EU6.tmpFRec328.exerwKoQhIFil6Ug.exepid process 4560 is-V4EU6.tmp 3796 FRec328.exe 1544 rwKoQhIFil6Ug.exe -
Loads dropped DLL 1 IoCs
Processes:
is-V4EU6.tmppid process 4560 is-V4EU6.tmp -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 9 IoCs
Processes:
is-V4EU6.tmpdescription ioc process File created C:\Program Files (x86)\FJHsoftFR\FRec328\is-JEOB0.tmp is-V4EU6.tmp File created C:\Program Files (x86)\FJHsoftFR\FRec328\is-2VTN1.tmp is-V4EU6.tmp File created C:\Program Files (x86)\FJHsoftFR\FRec328\is-HQKAI.tmp is-V4EU6.tmp File created C:\Program Files (x86)\FJHsoftFR\FRec328\is-NJOIE.tmp is-V4EU6.tmp File opened for modification C:\Program Files (x86)\FJHsoftFR\FRec328\unins000.dat is-V4EU6.tmp File created C:\Program Files (x86)\FJHsoftFR\FRec328\unins000.dat is-V4EU6.tmp File created C:\Program Files (x86)\FJHsoftFR\FRec328\is-CFFCV.tmp is-V4EU6.tmp File created C:\Program Files (x86)\FJHsoftFR\FRec328\data\is-S1LP6.tmp is-V4EU6.tmp File opened for modification C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe is-V4EU6.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 3584 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
FRec328.exepid process 3796 FRec328.exe 3796 FRec328.exe 3796 FRec328.exe 3796 FRec328.exe 3796 FRec328.exe 3796 FRec328.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 3584 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1.exeis-V4EU6.tmpFRec328.execmd.exedescription pid process target process PID 1848 wrote to memory of 4560 1848 4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1.exe is-V4EU6.tmp PID 1848 wrote to memory of 4560 1848 4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1.exe is-V4EU6.tmp PID 1848 wrote to memory of 4560 1848 4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1.exe is-V4EU6.tmp PID 4560 wrote to memory of 3796 4560 is-V4EU6.tmp FRec328.exe PID 4560 wrote to memory of 3796 4560 is-V4EU6.tmp FRec328.exe PID 4560 wrote to memory of 3796 4560 is-V4EU6.tmp FRec328.exe PID 3796 wrote to memory of 1544 3796 FRec328.exe rwKoQhIFil6Ug.exe PID 3796 wrote to memory of 1544 3796 FRec328.exe rwKoQhIFil6Ug.exe PID 3796 wrote to memory of 1544 3796 FRec328.exe rwKoQhIFil6Ug.exe PID 3796 wrote to memory of 2020 3796 FRec328.exe cmd.exe PID 3796 wrote to memory of 2020 3796 FRec328.exe cmd.exe PID 3796 wrote to memory of 2020 3796 FRec328.exe cmd.exe PID 2020 wrote to memory of 3584 2020 cmd.exe taskkill.exe PID 2020 wrote to memory of 3584 2020 cmd.exe taskkill.exe PID 2020 wrote to memory of 3584 2020 cmd.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1.exe"C:\Users\Admin\AppData\Local\Temp\4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-SUASD.tmp\is-V4EU6.tmp"C:\Users\Admin\AppData\Local\Temp\is-SUASD.tmp\is-V4EU6.tmp" /SL4 $F005C "C:\Users\Admin\AppData\Local\Temp\4cf0cf3a0b856198ae76247b43b6b2f9f7d92f31d4b131ca8b3a9ec46f0964a1.exe" 1775774 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)\FJHsoftFR\FRec328\FRec328.exe"C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.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}\rwKoQhIFil6Ug.exe
- Executes dropped EXE
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "FRec328.exe" /f & erase "C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "FRec328.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exeFilesize
1.7MB
MD56d78bda128f8538d33da49ca3f1f8ffc
SHA19d86b4c5923ebf9d578412f2f0d32aee47ba4941
SHA256ddc227fa75e792bd4b7119656d48b008a9410b7aeb572e12bda2ac0b0af42d11
SHA5121a14b1cd6e6542441452929cf5d199e136d24839013bc530fe730c062057370d75eadd8cab089b5a991ddfb96fcf999685da34ae78b41603aa757963fdfc4355
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C:\Program Files (x86)\FJHsoftFR\FRec328\FRec328.exeFilesize
1.7MB
MD56d78bda128f8538d33da49ca3f1f8ffc
SHA19d86b4c5923ebf9d578412f2f0d32aee47ba4941
SHA256ddc227fa75e792bd4b7119656d48b008a9410b7aeb572e12bda2ac0b0af42d11
SHA5121a14b1cd6e6542441452929cf5d199e136d24839013bc530fe730c062057370d75eadd8cab089b5a991ddfb96fcf999685da34ae78b41603aa757963fdfc4355
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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\K941J8ND\dll[1].htmFilesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
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C:\Users\Admin\AppData\Local\Temp\is-48TEF.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-SUASD.tmp\is-V4EU6.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Local\Temp\is-SUASD.tmp\is-V4EU6.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Roaming\{5cebde14-b1a3-11ed-bd92-806e6f6e6963}\rwKoQhIFil6Ug.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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C:\Users\Admin\AppData\Roaming\{5cebde14-b1a3-11ed-bd92-806e6f6e6963}\rwKoQhIFil6Ug.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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memory/1848-200-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1848-177-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1848-133-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/3796-165-0x0000000000400000-0x00000000013B2000-memory.dmpFilesize
15.7MB
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memory/3796-174-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/3796-166-0x0000000000400000-0x00000000013B2000-memory.dmpFilesize
15.7MB
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memory/3796-182-0x0000000000400000-0x00000000013B2000-memory.dmpFilesize
15.7MB
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memory/3796-198-0x0000000000400000-0x00000000013B2000-memory.dmpFilesize
15.7MB
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memory/4560-148-0x0000000002230000-0x0000000002231000-memory.dmpFilesize
4KB
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memory/4560-199-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/4560-179-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB