Analysis
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max time kernel
135s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
31-03-2023 01:07
Static task
static1
Behavioral task
behavioral1
Sample
b6d2e7eae8f6d062cd506523cab7f94fa8ceac7024c841d4be6e56be14c820c2.exe
Resource
win7-20230220-en
General
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Target
b6d2e7eae8f6d062cd506523cab7f94fa8ceac7024c841d4be6e56be14c820c2.exe
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Size
1.7MB
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MD5
1aefd3558d121b2048062d306782f6ea
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SHA1
9abc26479017fbaddbe77bc3e45c2d1904e6c9ea
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SHA256
b6d2e7eae8f6d062cd506523cab7f94fa8ceac7024c841d4be6e56be14c820c2
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SHA512
22ae21e9c25df28b99e3e59bf764ab982f685858048a6f0aad9b9d0dd1334db5bbdfc83edcfb29976db50d0336914d5aad4a93457196a89362a591cd23947d64
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SSDEEP
49152:EGlJfs4K18hD9Di6978+MRlHSrTDEqB9tkM55dlLYp:5rKChBR978pb23N9KsPYp
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:
FRec329.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation FRec329.exe -
Executes dropped EXE 3 IoCs
Processes:
is-QEDQH.tmpFRec329.exeR8k98VlOvVkqG.exepid process 4960 is-QEDQH.tmp 4596 FRec329.exe 3560 R8k98VlOvVkqG.exe -
Loads dropped DLL 1 IoCs
Processes:
is-QEDQH.tmppid process 4960 is-QEDQH.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-QEDQH.tmpdescription ioc process File created C:\Program Files (x86)\FJIsoftFR\FRec329\is-UKTMF.tmp is-QEDQH.tmp File created C:\Program Files (x86)\FJIsoftFR\FRec329\is-9ICCS.tmp is-QEDQH.tmp File created C:\Program Files (x86)\FJIsoftFR\FRec329\data\is-FB204.tmp is-QEDQH.tmp File opened for modification C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe is-QEDQH.tmp File created C:\Program Files (x86)\FJIsoftFR\FRec329\unins000.dat is-QEDQH.tmp File created C:\Program Files (x86)\FJIsoftFR\FRec329\is-6T0A0.tmp is-QEDQH.tmp File created C:\Program Files (x86)\FJIsoftFR\FRec329\is-FGLF0.tmp is-QEDQH.tmp File created C:\Program Files (x86)\FJIsoftFR\FRec329\is-VP7IH.tmp is-QEDQH.tmp File opened for modification C:\Program Files (x86)\FJIsoftFR\FRec329\unins000.dat is-QEDQH.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 4556 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
FRec329.exepid process 4596 FRec329.exe 4596 FRec329.exe 4596 FRec329.exe 4596 FRec329.exe 4596 FRec329.exe 4596 FRec329.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4556 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
b6d2e7eae8f6d062cd506523cab7f94fa8ceac7024c841d4be6e56be14c820c2.exeis-QEDQH.tmpFRec329.execmd.exedescription pid process target process PID 4936 wrote to memory of 4960 4936 b6d2e7eae8f6d062cd506523cab7f94fa8ceac7024c841d4be6e56be14c820c2.exe is-QEDQH.tmp PID 4936 wrote to memory of 4960 4936 b6d2e7eae8f6d062cd506523cab7f94fa8ceac7024c841d4be6e56be14c820c2.exe is-QEDQH.tmp PID 4936 wrote to memory of 4960 4936 b6d2e7eae8f6d062cd506523cab7f94fa8ceac7024c841d4be6e56be14c820c2.exe is-QEDQH.tmp PID 4960 wrote to memory of 4596 4960 is-QEDQH.tmp FRec329.exe PID 4960 wrote to memory of 4596 4960 is-QEDQH.tmp FRec329.exe PID 4960 wrote to memory of 4596 4960 is-QEDQH.tmp FRec329.exe PID 4596 wrote to memory of 3560 4596 FRec329.exe R8k98VlOvVkqG.exe PID 4596 wrote to memory of 3560 4596 FRec329.exe R8k98VlOvVkqG.exe PID 4596 wrote to memory of 3560 4596 FRec329.exe R8k98VlOvVkqG.exe PID 4596 wrote to memory of 1300 4596 FRec329.exe cmd.exe PID 4596 wrote to memory of 1300 4596 FRec329.exe cmd.exe PID 4596 wrote to memory of 1300 4596 FRec329.exe cmd.exe PID 1300 wrote to memory of 4556 1300 cmd.exe taskkill.exe PID 1300 wrote to memory of 4556 1300 cmd.exe taskkill.exe PID 1300 wrote to memory of 4556 1300 cmd.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b6d2e7eae8f6d062cd506523cab7f94fa8ceac7024c841d4be6e56be14c820c2.exe"C:\Users\Admin\AppData\Local\Temp\b6d2e7eae8f6d062cd506523cab7f94fa8ceac7024c841d4be6e56be14c820c2.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-T7V0A.tmp\is-QEDQH.tmp"C:\Users\Admin\AppData\Local\Temp\is-T7V0A.tmp\is-QEDQH.tmp" /SL4 $C01CE "C:\Users\Admin\AppData\Local\Temp\b6d2e7eae8f6d062cd506523cab7f94fa8ceac7024c841d4be6e56be14c820c2.exe" 1588556 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)\FJIsoftFR\FRec329\FRec329.exe"C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.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\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\R8k98VlOvVkqG.exe
- Executes dropped EXE
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "FRec329.exe" /f & erase "C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "FRec329.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)\FJIsoftFR\FRec329\FRec329.exeFilesize
1.5MB
MD5aa1c6f9f7289fc3ec9d12940b1cf7ac4
SHA1695cc0be1977fb205fb4c940f4c11aab0fabfd37
SHA25685d51d055a50949425d16c1de1b3640f607e2da73666e21172615c4173ae1921
SHA512d6adb0f470f0b1f2d6d066b3787eabddbff42c95dfe57ce0657b3f82714800b2aa95958396a7d9806dc4a2666a2091f047e80dd4edbe1004f09b1d06dc1b46b5
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C:\Program Files (x86)\FJIsoftFR\FRec329\FRec329.exeFilesize
1.5MB
MD5aa1c6f9f7289fc3ec9d12940b1cf7ac4
SHA1695cc0be1977fb205fb4c940f4c11aab0fabfd37
SHA25685d51d055a50949425d16c1de1b3640f607e2da73666e21172615c4173ae1921
SHA512d6adb0f470f0b1f2d6d066b3787eabddbff42c95dfe57ce0657b3f82714800b2aa95958396a7d9806dc4a2666a2091f047e80dd4edbe1004f09b1d06dc1b46b5
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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\YYL8D8JJ\dll[1].htmFilesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
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C:\Users\Admin\AppData\Local\Temp\is-48G25.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-T7V0A.tmp\is-QEDQH.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Local\Temp\is-T7V0A.tmp\is-QEDQH.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\R8k98VlOvVkqG.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\R8k98VlOvVkqG.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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memory/4596-166-0x0000000000400000-0x0000000001379000-memory.dmpFilesize
15.5MB
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memory/4596-174-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/4596-165-0x0000000000400000-0x0000000001379000-memory.dmpFilesize
15.5MB
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memory/4596-181-0x0000000000400000-0x0000000001379000-memory.dmpFilesize
15.5MB
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memory/4596-197-0x0000000000400000-0x0000000001379000-memory.dmpFilesize
15.5MB
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memory/4936-199-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/4936-178-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/4936-133-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/4960-148-0x0000000000570000-0x0000000000571000-memory.dmpFilesize
4KB
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memory/4960-198-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/4960-180-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB