Analysis
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max time kernel
76s -
max time network
99s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
26-03-2023 11:19
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
2.1MB
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MD5
6b5e9ecbf05e28947c20cf3c025c1e81
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SHA1
7946956191ce8c1f8d0fd5be4b03769a129f9601
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SHA256
9407e3424fb322d3344b4b8717dae260616f4de1a3ab22eb1e9e674718c993d8
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SHA512
30dbfbc7b084bd11aa22237af15c7ae220bbbb2a6930946e4179f450283cb2f9aa16002bb78e82e5d52cf8d4c2b6f9aa51bb09e81289f3e021b7bb9615c28cca
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SSDEEP
49152:EGlJfs03gynCzX0jmgq+rKk7CujI5CHrWhzLg25dlLYp:5zCYjmgqfk5jI5jXPYp
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:
FRec326.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation FRec326.exe -
Executes dropped EXE 3 IoCs
Processes:
is-4GEKK.tmpFRec326.exeaWLzvEUxAQ2.exepid process 4992 is-4GEKK.tmp 2200 FRec326.exe 2656 aWLzvEUxAQ2.exe -
Loads dropped DLL 1 IoCs
Processes:
is-4GEKK.tmppid process 4992 is-4GEKK.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-4GEKK.tmpdescription ioc process File created C:\Program Files (x86)\FJFsoftFR\FRec326\unins000.dat is-4GEKK.tmp File created C:\Program Files (x86)\FJFsoftFR\FRec326\is-CJSTA.tmp is-4GEKK.tmp File opened for modification C:\Program Files (x86)\FJFsoftFR\FRec326\unins000.dat is-4GEKK.tmp File opened for modification C:\Program Files (x86)\FJFsoftFR\FRec326\FRec326.exe is-4GEKK.tmp File created C:\Program Files (x86)\FJFsoftFR\FRec326\is-MDEHJ.tmp is-4GEKK.tmp File created C:\Program Files (x86)\FJFsoftFR\FRec326\is-HC51S.tmp is-4GEKK.tmp File created C:\Program Files (x86)\FJFsoftFR\FRec326\is-4JB3I.tmp is-4GEKK.tmp File created C:\Program Files (x86)\FJFsoftFR\FRec326\is-KUVK7.tmp is-4GEKK.tmp File created C:\Program Files (x86)\FJFsoftFR\FRec326\data\is-3U5M1.tmp is-4GEKK.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 2904 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
FRec326.exepid process 2200 FRec326.exe 2200 FRec326.exe 2200 FRec326.exe 2200 FRec326.exe 2200 FRec326.exe 2200 FRec326.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 2904 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exeis-4GEKK.tmpFRec326.execmd.exedescription pid process target process PID 3420 wrote to memory of 4992 3420 file.exe is-4GEKK.tmp PID 3420 wrote to memory of 4992 3420 file.exe is-4GEKK.tmp PID 3420 wrote to memory of 4992 3420 file.exe is-4GEKK.tmp PID 4992 wrote to memory of 2200 4992 is-4GEKK.tmp FRec326.exe PID 4992 wrote to memory of 2200 4992 is-4GEKK.tmp FRec326.exe PID 4992 wrote to memory of 2200 4992 is-4GEKK.tmp FRec326.exe PID 2200 wrote to memory of 2656 2200 FRec326.exe aWLzvEUxAQ2.exe PID 2200 wrote to memory of 2656 2200 FRec326.exe aWLzvEUxAQ2.exe PID 2200 wrote to memory of 2656 2200 FRec326.exe aWLzvEUxAQ2.exe PID 2200 wrote to memory of 1788 2200 FRec326.exe cmd.exe PID 2200 wrote to memory of 1788 2200 FRec326.exe cmd.exe PID 2200 wrote to memory of 1788 2200 FRec326.exe cmd.exe PID 1788 wrote to memory of 2904 1788 cmd.exe taskkill.exe PID 1788 wrote to memory of 2904 1788 cmd.exe taskkill.exe PID 1788 wrote to memory of 2904 1788 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-BFV26.tmp\is-4GEKK.tmp"C:\Users\Admin\AppData\Local\Temp\is-BFV26.tmp\is-4GEKK.tmp" /SL4 $A0040 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1931344 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)\FJFsoftFR\FRec326\FRec326.exe"C:\Program Files (x86)\FJFsoftFR\FRec326\FRec326.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\{88209788-b19c-11ed-8ff5-806e6f6e6963}\aWLzvEUxAQ2.exe
- Executes dropped EXE
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "FRec326.exe" /f & erase "C:\Program Files (x86)\FJFsoftFR\FRec326\FRec326.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "FRec326.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)\FJFsoftFR\FRec326\FRec326.exeFilesize
2.3MB
MD544888ad2634da73999e5b561d837ba60
SHA1ed3f0847e5c79a7e6d54f24c451b38b1aa2fd988
SHA2562b9352bd2e372349beaae0e6938cc221b6d41386e75586418c25335564b454b3
SHA512d846498e617c57ff7647c468325270322ecf8207c28efae006a02715521cde84e00de4083e2685acb9b35942cc8d2f01e36ada7b5dffba8109f545e28375f068
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C:\Program Files (x86)\FJFsoftFR\FRec326\FRec326.exeFilesize
2.3MB
MD544888ad2634da73999e5b561d837ba60
SHA1ed3f0847e5c79a7e6d54f24c451b38b1aa2fd988
SHA2562b9352bd2e372349beaae0e6938cc221b6d41386e75586418c25335564b454b3
SHA512d846498e617c57ff7647c468325270322ecf8207c28efae006a02715521cde84e00de4083e2685acb9b35942cc8d2f01e36ada7b5dffba8109f545e28375f068
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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\4VT6R2QM\dll[1].htmFilesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
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C:\Users\Admin\AppData\Local\Temp\is-BFV26.tmp\is-4GEKK.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Local\Temp\is-BFV26.tmp\is-4GEKK.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Local\Temp\is-HGBRP.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Roaming\{88209788-b19c-11ed-8ff5-806e6f6e6963}\aWLzvEUxAQ2.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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C:\Users\Admin\AppData\Roaming\{88209788-b19c-11ed-8ff5-806e6f6e6963}\aWLzvEUxAQ2.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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memory/2200-166-0x0000000000400000-0x0000000001456000-memory.dmpFilesize
16.3MB
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memory/2200-174-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/2200-165-0x0000000000400000-0x0000000001456000-memory.dmpFilesize
16.3MB
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memory/2200-181-0x0000000000400000-0x0000000001456000-memory.dmpFilesize
16.3MB
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memory/2200-197-0x0000000000400000-0x0000000001456000-memory.dmpFilesize
16.3MB
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memory/3420-199-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/3420-178-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/3420-133-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/4992-150-0x0000000000650000-0x0000000000651000-memory.dmpFilesize
4KB
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memory/4992-198-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/4992-179-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB