Analysis
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max time kernel
135s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
10-04-2023 16:33
Static task
static1
Behavioral task
behavioral1
Sample
550d53c4afde2b015c0cadd9241c288a6170d0fe3d39e76718c22571a5114761.exe
Resource
win7-20230220-en
General
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Target
550d53c4afde2b015c0cadd9241c288a6170d0fe3d39e76718c22571a5114761.exe
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Size
2.9MB
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MD5
fb1046051d0210b51478ae619c68672d
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SHA1
6fac362191ac9d2bb37890a9ffd922915edf14d6
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SHA256
550d53c4afde2b015c0cadd9241c288a6170d0fe3d39e76718c22571a5114761
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SHA512
e611664e4636443220058c50bc7fae9ca7a276d5678911d920527aa2d3ccf7964ae43d6df1c6e2e0b8509bff1146d2a97c06a36f228022c091bac607bf54c386
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SSDEEP
49152:qGlJfsZyJxth6WcWOHtz9r1R7DwIFdfnfu18znjf7eQfOEL1fAA8ZYrjx55zqWHw:7PJXh4Tt9fwaVnfu1Yjf7eaOoVAA8SrG
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:
FRec49.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation FRec49.exe -
Executes dropped EXE 3 IoCs
Processes:
is-1JL9U.tmpFRec49.exewiUgQ0R4c.exepid process 2940 is-1JL9U.tmp 1704 FRec49.exe 2468 wiUgQ0R4c.exe -
Loads dropped DLL 3 IoCs
Processes:
is-1JL9U.tmppid process 2940 is-1JL9U.tmp 2940 is-1JL9U.tmp 2940 is-1JL9U.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-1JL9U.tmpdescription ioc process File created C:\Program Files (x86)\FJTsoftFR\Rec49\is-OD5GS.tmp is-1JL9U.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\unins000.dat is-1JL9U.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\is-S9UF0.tmp is-1JL9U.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\is-FRNV8.tmp is-1JL9U.tmp File opened for modification C:\Program Files (x86)\FJTsoftFR\Rec49\unins000.dat is-1JL9U.tmp File opened for modification C:\Program Files (x86)\FJTsoftFR\Rec49\FRec49.exe is-1JL9U.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\is-NLMU5.tmp is-1JL9U.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\is-5F6F0.tmp is-1JL9U.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\data\is-NDPQK.tmp is-1JL9U.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 4700 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
FRec49.exepid process 1704 FRec49.exe 1704 FRec49.exe 1704 FRec49.exe 1704 FRec49.exe 1704 FRec49.exe 1704 FRec49.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4700 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
550d53c4afde2b015c0cadd9241c288a6170d0fe3d39e76718c22571a5114761.exeis-1JL9U.tmpFRec49.execmd.exedescription pid process target process PID 3700 wrote to memory of 2940 3700 550d53c4afde2b015c0cadd9241c288a6170d0fe3d39e76718c22571a5114761.exe is-1JL9U.tmp PID 3700 wrote to memory of 2940 3700 550d53c4afde2b015c0cadd9241c288a6170d0fe3d39e76718c22571a5114761.exe is-1JL9U.tmp PID 3700 wrote to memory of 2940 3700 550d53c4afde2b015c0cadd9241c288a6170d0fe3d39e76718c22571a5114761.exe is-1JL9U.tmp PID 2940 wrote to memory of 1704 2940 is-1JL9U.tmp FRec49.exe PID 2940 wrote to memory of 1704 2940 is-1JL9U.tmp FRec49.exe PID 2940 wrote to memory of 1704 2940 is-1JL9U.tmp FRec49.exe PID 1704 wrote to memory of 2468 1704 FRec49.exe wiUgQ0R4c.exe PID 1704 wrote to memory of 2468 1704 FRec49.exe wiUgQ0R4c.exe PID 1704 wrote to memory of 2468 1704 FRec49.exe wiUgQ0R4c.exe PID 1704 wrote to memory of 1468 1704 FRec49.exe cmd.exe PID 1704 wrote to memory of 1468 1704 FRec49.exe cmd.exe PID 1704 wrote to memory of 1468 1704 FRec49.exe cmd.exe PID 1468 wrote to memory of 4700 1468 cmd.exe taskkill.exe PID 1468 wrote to memory of 4700 1468 cmd.exe taskkill.exe PID 1468 wrote to memory of 4700 1468 cmd.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\550d53c4afde2b015c0cadd9241c288a6170d0fe3d39e76718c22571a5114761.exe"C:\Users\Admin\AppData\Local\Temp\550d53c4afde2b015c0cadd9241c288a6170d0fe3d39e76718c22571a5114761.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-DJ3F6.tmp\is-1JL9U.tmp"C:\Users\Admin\AppData\Local\Temp\is-DJ3F6.tmp\is-1JL9U.tmp" /SL4 $C0060 "C:\Users\Admin\AppData\Local\Temp\550d53c4afde2b015c0cadd9241c288a6170d0fe3d39e76718c22571a5114761.exe" 2838316 563202⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\FJTsoftFR\Rec49\FRec49.exe"C:\Program Files (x86)\FJTsoftFR\Rec49\FRec49.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}\wiUgQ0R4c.exe
- Executes dropped EXE
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "FRec49.exe" /f & erase "C:\Program Files (x86)\FJTsoftFR\Rec49\FRec49.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "FRec49.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)\FJTsoftFR\Rec49\FRec49.exeFilesize
3.1MB
MD556aad3cfb790acbde0cdbcb66160c857
SHA1bcb7010134f4d8e63e7e42398bffe6f2cd904685
SHA25652b8a9d8680790acd3842257828c2546f632c1b96858972e661394771bb43ee7
SHA512f07a4cdf2027914955076609e54f585c0bf2b8884065c25a8bc113854230e8481750ff95409564aba32a7cea76b864c344131907196be65413985221ca989ebe
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C:\Program Files (x86)\FJTsoftFR\Rec49\FRec49.exeFilesize
3.1MB
MD556aad3cfb790acbde0cdbcb66160c857
SHA1bcb7010134f4d8e63e7e42398bffe6f2cd904685
SHA25652b8a9d8680790acd3842257828c2546f632c1b96858972e661394771bb43ee7
SHA512f07a4cdf2027914955076609e54f585c0bf2b8884065c25a8bc113854230e8481750ff95409564aba32a7cea76b864c344131907196be65413985221ca989ebe
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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-3LKCQ.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-3LKCQ.tmp\_isetup\_isdecmp.dllFilesize
13KB
MD5a813d18268affd4763dde940246dc7e5
SHA1c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
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C:\Users\Admin\AppData\Local\Temp\is-3LKCQ.tmp\_isetup\_isdecmp.dllFilesize
13KB
MD5a813d18268affd4763dde940246dc7e5
SHA1c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
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C:\Users\Admin\AppData\Local\Temp\is-DJ3F6.tmp\is-1JL9U.tmpFilesize
659KB
MD557d101722b08967ce53be6109b7f6ccf
SHA1f62e5f39efbfb03d0ddd822963122eb1945d9f18
SHA2565b433440454647dc2775cacf3258f2272cb2fc0ec870b862744aad4ee7bc7ec9
SHA51257158b946d08d669967f8b09dde8a44a1e2c94ac0a313aa6f3eb52c651c73e7546b085a201847757ac15911d797a8fb2032a13e845b790af5279abd344793f4b
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C:\Users\Admin\AppData\Local\Temp\is-DJ3F6.tmp\is-1JL9U.tmpFilesize
659KB
MD557d101722b08967ce53be6109b7f6ccf
SHA1f62e5f39efbfb03d0ddd822963122eb1945d9f18
SHA2565b433440454647dc2775cacf3258f2272cb2fc0ec870b862744aad4ee7bc7ec9
SHA51257158b946d08d669967f8b09dde8a44a1e2c94ac0a313aa6f3eb52c651c73e7546b085a201847757ac15911d797a8fb2032a13e845b790af5279abd344793f4b
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C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\wiUgQ0R4c.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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C:\Users\Admin\AppData\Roaming\{a9cfdea2-b1a1-11ed-9f68-806e6f6e6963}\wiUgQ0R4c.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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memory/1704-171-0x0000000000400000-0x000000000151B000-memory.dmpFilesize
17.1MB
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memory/1704-180-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/1704-187-0x0000000000400000-0x000000000151B000-memory.dmpFilesize
17.1MB
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memory/1704-172-0x0000000000400000-0x000000000151B000-memory.dmpFilesize
17.1MB
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memory/1704-203-0x0000000000400000-0x000000000151B000-memory.dmpFilesize
17.1MB
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memory/2940-186-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/2940-204-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/2940-170-0x0000000000650000-0x0000000000651000-memory.dmpFilesize
4KB
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memory/3700-133-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3700-185-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3700-205-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB