Analysis
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max time kernel
146s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
24-03-2023 10:07
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20230220-en
General
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Target
file.exe
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Size
1.9MB
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MD5
1b25ebb15febf3df865119a5cfbc6ec0
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SHA1
bcdd463ee2870d82efc590c2ed1a50ae587f60fb
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SHA256
e3f43693acaca6abb1b0bb8de4a504c52f1e50e08b039d59ffe273696bd69021
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SHA512
1e425dc8465e8dce13018c4adfe5d5ddc94f3a9b8825de3f4860233d77e4537a29dba3af866a82afed160032650332dcd43f1648b090ccb496e3e413c3552a70
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SSDEEP
49152:EGlJfs0pdlpjtFmpcE2gbHQ9U+MxkkCTcZh5RmpUDO5dlLYp:5bpjtMcWbH6Yx7HHXm2YPYp
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:
FRec324.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation FRec324.exe -
Executes dropped EXE 3 IoCs
Processes:
is-02BLO.tmpFRec324.exe8j4iuKXBkkW7Gh.exepid process 3736 is-02BLO.tmp 3608 FRec324.exe 1288 8j4iuKXBkkW7Gh.exe -
Loads dropped DLL 1 IoCs
Processes:
is-02BLO.tmppid process 3736 is-02BLO.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-02BLO.tmpdescription ioc process File created C:\Program Files (x86)\FJCsoftFR\FRec324\is-432HI.tmp is-02BLO.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\is-I6951.tmp is-02BLO.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\unins000.dat is-02BLO.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\is-H41RM.tmp is-02BLO.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\is-UVN6L.tmp is-02BLO.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\is-OS5ML.tmp is-02BLO.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\data\is-5A942.tmp is-02BLO.tmp File opened for modification C:\Program Files (x86)\FJCsoftFR\FRec324\unins000.dat is-02BLO.tmp File opened for modification C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe is-02BLO.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 4128 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
FRec324.exepid process 3608 FRec324.exe 3608 FRec324.exe 3608 FRec324.exe 3608 FRec324.exe 3608 FRec324.exe 3608 FRec324.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4128 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exeis-02BLO.tmpFRec324.execmd.exedescription pid process target process PID 436 wrote to memory of 3736 436 file.exe is-02BLO.tmp PID 436 wrote to memory of 3736 436 file.exe is-02BLO.tmp PID 436 wrote to memory of 3736 436 file.exe is-02BLO.tmp PID 3736 wrote to memory of 3608 3736 is-02BLO.tmp FRec324.exe PID 3736 wrote to memory of 3608 3736 is-02BLO.tmp FRec324.exe PID 3736 wrote to memory of 3608 3736 is-02BLO.tmp FRec324.exe PID 3608 wrote to memory of 1288 3608 FRec324.exe 8j4iuKXBkkW7Gh.exe PID 3608 wrote to memory of 1288 3608 FRec324.exe 8j4iuKXBkkW7Gh.exe PID 3608 wrote to memory of 1288 3608 FRec324.exe 8j4iuKXBkkW7Gh.exe PID 3608 wrote to memory of 720 3608 FRec324.exe cmd.exe PID 3608 wrote to memory of 720 3608 FRec324.exe cmd.exe PID 3608 wrote to memory of 720 3608 FRec324.exe cmd.exe PID 720 wrote to memory of 4128 720 cmd.exe taskkill.exe PID 720 wrote to memory of 4128 720 cmd.exe taskkill.exe PID 720 wrote to memory of 4128 720 cmd.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-JID1V.tmp\is-02BLO.tmp"C:\Users\Admin\AppData\Local\Temp\is-JID1V.tmp\is-02BLO.tmp" /SL4 $1F0022 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1761969 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)\FJCsoftFR\FRec324\FRec324.exe"C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.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\{7f74da3b-b191-11ed-abe8-806e6f6e6963}\8j4iuKXBkkW7Gh.exe
- Executes dropped EXE
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "FRec324.exe" /f & erase "C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "FRec324.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)\FJCsoftFR\FRec324\FRec324.exeFilesize
2.2MB
MD5e02b5c8fe3b16395e9e4be7f5d504078
SHA142f4ed08abbd1bb056dba3d78bb6f18ef7985282
SHA256ead673c6320c63c6ebe0ae4619ca1aea967468e09f15ba8d47390bb5a70bbd52
SHA512d03cbef0dec76ffac54451bde8cc693cfc4d69d75e8e64f1752f5fd8b324aae14810b87838b9e8acf4bac50e268722b8fdfc4a357a50d973f32e56e12af09313
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C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exeFilesize
2.2MB
MD5e02b5c8fe3b16395e9e4be7f5d504078
SHA142f4ed08abbd1bb056dba3d78bb6f18ef7985282
SHA256ead673c6320c63c6ebe0ae4619ca1aea967468e09f15ba8d47390bb5a70bbd52
SHA512d03cbef0dec76ffac54451bde8cc693cfc4d69d75e8e64f1752f5fd8b324aae14810b87838b9e8acf4bac50e268722b8fdfc4a357a50d973f32e56e12af09313
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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\4HAJQ22Y\dll[1].htmFilesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
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C:\Users\Admin\AppData\Local\Temp\is-C49O6.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-JID1V.tmp\is-02BLO.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Local\Temp\is-JID1V.tmp\is-02BLO.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Roaming\{7f74da3b-b191-11ed-abe8-806e6f6e6963}\8j4iuKXBkkW7Gh.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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C:\Users\Admin\AppData\Roaming\{7f74da3b-b191-11ed-abe8-806e6f6e6963}\8j4iuKXBkkW7Gh.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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memory/436-199-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/436-179-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/436-133-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/3608-166-0x0000000000400000-0x000000000143D000-memory.dmpFilesize
16.2MB
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memory/3608-174-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/3608-165-0x0000000000400000-0x000000000143D000-memory.dmpFilesize
16.2MB
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memory/3608-182-0x0000000000400000-0x000000000143D000-memory.dmpFilesize
16.2MB
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memory/3608-197-0x0000000000400000-0x000000000143D000-memory.dmpFilesize
16.2MB
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memory/3736-148-0x0000000000790000-0x0000000000791000-memory.dmpFilesize
4KB
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memory/3736-198-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/3736-180-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB