Analysis
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max time kernel
59s -
max time network
61s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-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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Executes dropped EXE 3 IoCs
Processes:
is-AR4LC.tmpFRec324.exeRXZVMMaU7e75zz.exepid process 2040 is-AR4LC.tmp 1684 FRec324.exe 1484 RXZVMMaU7e75zz.exe -
Loads dropped DLL 6 IoCs
Processes:
file.exeis-AR4LC.tmpFRec324.exepid process 1268 file.exe 2040 is-AR4LC.tmp 2040 is-AR4LC.tmp 2040 is-AR4LC.tmp 2040 is-AR4LC.tmp 1684 FRec324.exe -
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-AR4LC.tmpdescription ioc process File created C:\Program Files (x86)\FJCsoftFR\FRec324\unins000.dat is-AR4LC.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\is-G48TD.tmp is-AR4LC.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\is-GV9JT.tmp is-AR4LC.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\is-NQRJG.tmp is-AR4LC.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\is-6PVBK.tmp is-AR4LC.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\is-KMJLH.tmp is-AR4LC.tmp File created C:\Program Files (x86)\FJCsoftFR\FRec324\data\is-5F5GL.tmp is-AR4LC.tmp File opened for modification C:\Program Files (x86)\FJCsoftFR\FRec324\unins000.dat is-AR4LC.tmp File opened for modification C:\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exe is-AR4LC.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 2004 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
FRec324.exepid process 1684 FRec324.exe 1684 FRec324.exe 1684 FRec324.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 2004 taskkill.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
file.exeis-AR4LC.tmpFRec324.execmd.exedescription pid process target process PID 1268 wrote to memory of 2040 1268 file.exe is-AR4LC.tmp PID 1268 wrote to memory of 2040 1268 file.exe is-AR4LC.tmp PID 1268 wrote to memory of 2040 1268 file.exe is-AR4LC.tmp PID 1268 wrote to memory of 2040 1268 file.exe is-AR4LC.tmp PID 1268 wrote to memory of 2040 1268 file.exe is-AR4LC.tmp PID 1268 wrote to memory of 2040 1268 file.exe is-AR4LC.tmp PID 1268 wrote to memory of 2040 1268 file.exe is-AR4LC.tmp PID 2040 wrote to memory of 1684 2040 is-AR4LC.tmp FRec324.exe PID 2040 wrote to memory of 1684 2040 is-AR4LC.tmp FRec324.exe PID 2040 wrote to memory of 1684 2040 is-AR4LC.tmp FRec324.exe PID 2040 wrote to memory of 1684 2040 is-AR4LC.tmp FRec324.exe PID 1684 wrote to memory of 1484 1684 FRec324.exe RXZVMMaU7e75zz.exe PID 1684 wrote to memory of 1484 1684 FRec324.exe RXZVMMaU7e75zz.exe PID 1684 wrote to memory of 1484 1684 FRec324.exe RXZVMMaU7e75zz.exe PID 1684 wrote to memory of 1484 1684 FRec324.exe RXZVMMaU7e75zz.exe PID 1684 wrote to memory of 1892 1684 FRec324.exe cmd.exe PID 1684 wrote to memory of 1892 1684 FRec324.exe cmd.exe PID 1684 wrote to memory of 1892 1684 FRec324.exe cmd.exe PID 1684 wrote to memory of 1892 1684 FRec324.exe cmd.exe PID 1892 wrote to memory of 2004 1892 cmd.exe taskkill.exe PID 1892 wrote to memory of 2004 1892 cmd.exe taskkill.exe PID 1892 wrote to memory of 2004 1892 cmd.exe taskkill.exe PID 1892 wrote to memory of 2004 1892 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⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-IINL3.tmp\is-AR4LC.tmp"C:\Users\Admin\AppData\Local\Temp\is-IINL3.tmp\is-AR4LC.tmp" /SL4 $70124 "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⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RXZVMMaU7e75zz.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\Temporary Internet Files\Content.IE5\VQ77JNZF\dll[2].htmFilesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
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C:\Users\Admin\AppData\Local\Temp\is-IINL3.tmp\is-AR4LC.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Local\Temp\is-IINL3.tmp\is-AR4LC.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RXZVMMaU7e75zz.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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\Program Files (x86)\FJCsoftFR\FRec324\FRec324.exeFilesize
2.2MB
MD5e02b5c8fe3b16395e9e4be7f5d504078
SHA142f4ed08abbd1bb056dba3d78bb6f18ef7985282
SHA256ead673c6320c63c6ebe0ae4619ca1aea967468e09f15ba8d47390bb5a70bbd52
SHA512d03cbef0dec76ffac54451bde8cc693cfc4d69d75e8e64f1752f5fd8b324aae14810b87838b9e8acf4bac50e268722b8fdfc4a357a50d973f32e56e12af09313
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\Users\Admin\AppData\Local\Temp\is-C0GBG.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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\Users\Admin\AppData\Local\Temp\is-C0GBG.tmp\_isetup\_shfoldr.dllFilesize
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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\Users\Admin\AppData\Local\Temp\is-C0GBG.tmp\_isetup\_shfoldr.dllFilesize
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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\Users\Admin\AppData\Local\Temp\is-IINL3.tmp\is-AR4LC.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RXZVMMaU7e75zz.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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memory/1268-135-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1268-54-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1268-94-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1684-93-0x0000000000400000-0x000000000143D000-memory.dmpFilesize
16.2MB
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memory/1684-96-0x0000000000400000-0x000000000143D000-memory.dmpFilesize
16.2MB
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memory/1684-108-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/1684-111-0x0000000000400000-0x000000000143D000-memory.dmpFilesize
16.2MB
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memory/1684-113-0x0000000000400000-0x000000000143D000-memory.dmpFilesize
16.2MB
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memory/1684-92-0x0000000000400000-0x000000000143D000-memory.dmpFilesize
16.2MB
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memory/1684-133-0x0000000000400000-0x000000000143D000-memory.dmpFilesize
16.2MB
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memory/2040-95-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/2040-104-0x0000000003980000-0x00000000049BD000-memory.dmpFilesize
16.2MB
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memory/2040-134-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/2040-91-0x0000000003980000-0x00000000049BD000-memory.dmpFilesize
16.2MB
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memory/2040-74-0x00000000002D0000-0x00000000002D1000-memory.dmpFilesize
4KB