Analysis
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max time kernel
62s -
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
27-03-2023 04:56
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
1.8MB
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MD5
87ab999411c98cd71165d80cc28ccdf7
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SHA1
a87c9617638c5b0800a771cc9b743c2d31c605db
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SHA256
a9f02f4197438a00803cc5797895b65016c05c310a306d3b52ffe7c8b0643893
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SHA512
155e44700815c7feeae27d0a62d54cc396c435d13d866b7eb5b45c5009733fb275a1adb85a80f3e044f46e7d147a5ed24d4678905bda40e8b89b3080b89b759c
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SSDEEP
49152:EGlJfs0l7JOzFt98Uyz/oE0xpma7SYtqfAms4KE5dlLYp:5H7KFtCz/o18aGYt6AmhPYp
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:
FRec327.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation FRec327.exe -
Executes dropped EXE 3 IoCs
Processes:
is-EMHRP.tmpFRec327.exeDUsZavR.exepid process 1240 is-EMHRP.tmp 3536 FRec327.exe 4676 DUsZavR.exe -
Loads dropped DLL 1 IoCs
Processes:
is-EMHRP.tmppid process 1240 is-EMHRP.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-EMHRP.tmpdescription ioc process File created C:\Program Files (x86)\FJGsoftFR\FRec327\unins000.dat is-EMHRP.tmp File created C:\Program Files (x86)\FJGsoftFR\FRec327\is-RAR5F.tmp is-EMHRP.tmp File created C:\Program Files (x86)\FJGsoftFR\FRec327\is-CRUSU.tmp is-EMHRP.tmp File created C:\Program Files (x86)\FJGsoftFR\FRec327\data\is-U0OTD.tmp is-EMHRP.tmp File opened for modification C:\Program Files (x86)\FJGsoftFR\FRec327\unins000.dat is-EMHRP.tmp File opened for modification C:\Program Files (x86)\FJGsoftFR\FRec327\FRec327.exe is-EMHRP.tmp File created C:\Program Files (x86)\FJGsoftFR\FRec327\is-7ERT0.tmp is-EMHRP.tmp File created C:\Program Files (x86)\FJGsoftFR\FRec327\is-HVC1U.tmp is-EMHRP.tmp File created C:\Program Files (x86)\FJGsoftFR\FRec327\is-RN36T.tmp is-EMHRP.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 4960 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
FRec327.exepid process 3536 FRec327.exe 3536 FRec327.exe 3536 FRec327.exe 3536 FRec327.exe 3536 FRec327.exe 3536 FRec327.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4960 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exeis-EMHRP.tmpFRec327.execmd.exedescription pid process target process PID 1640 wrote to memory of 1240 1640 file.exe is-EMHRP.tmp PID 1640 wrote to memory of 1240 1640 file.exe is-EMHRP.tmp PID 1640 wrote to memory of 1240 1640 file.exe is-EMHRP.tmp PID 1240 wrote to memory of 3536 1240 is-EMHRP.tmp FRec327.exe PID 1240 wrote to memory of 3536 1240 is-EMHRP.tmp FRec327.exe PID 1240 wrote to memory of 3536 1240 is-EMHRP.tmp FRec327.exe PID 3536 wrote to memory of 4676 3536 FRec327.exe DUsZavR.exe PID 3536 wrote to memory of 4676 3536 FRec327.exe DUsZavR.exe PID 3536 wrote to memory of 4676 3536 FRec327.exe DUsZavR.exe PID 3536 wrote to memory of 2848 3536 FRec327.exe cmd.exe PID 3536 wrote to memory of 2848 3536 FRec327.exe cmd.exe PID 3536 wrote to memory of 2848 3536 FRec327.exe cmd.exe PID 2848 wrote to memory of 4960 2848 cmd.exe taskkill.exe PID 2848 wrote to memory of 4960 2848 cmd.exe taskkill.exe PID 2848 wrote to memory of 4960 2848 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-55EDI.tmp\is-EMHRP.tmp"C:\Users\Admin\AppData\Local\Temp\is-55EDI.tmp\is-EMHRP.tmp" /SL4 $8006A "C:\Users\Admin\AppData\Local\Temp\file.exe" 1623486 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)\FJGsoftFR\FRec327\FRec327.exe"C:\Program Files (x86)\FJGsoftFR\FRec327\FRec327.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\{0338073a-b1a2-11ed-9ee7-806e6f6e6963}\DUsZavR.exe
- Executes dropped EXE
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "FRec327.exe" /f & erase "C:\Program Files (x86)\FJGsoftFR\FRec327\FRec327.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "FRec327.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)\FJGsoftFR\FRec327\FRec327.exeFilesize
1.6MB
MD5b25ae2bbd8cddf56825abaf223c4c3ab
SHA1f109415d40fcc61379cb77c8b0a351bb83895883
SHA25662d4029436cf1c0836df0eddef67184efc60627254269b52d3e312ed79e69085
SHA512c0753d444561004246b912affd2c91a227dfc4e283a7bd6c5cf2cc9560a700c116a13a25fe720a68e559d3477b25211df33a2fa16ee1007fac3103b5f262129f
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C:\Program Files (x86)\FJGsoftFR\FRec327\FRec327.exeFilesize
1.6MB
MD5b25ae2bbd8cddf56825abaf223c4c3ab
SHA1f109415d40fcc61379cb77c8b0a351bb83895883
SHA25662d4029436cf1c0836df0eddef67184efc60627254269b52d3e312ed79e69085
SHA512c0753d444561004246b912affd2c91a227dfc4e283a7bd6c5cf2cc9560a700c116a13a25fe720a68e559d3477b25211df33a2fa16ee1007fac3103b5f262129f
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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6K3GJRJ1\dll[1].htmFilesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
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C:\Users\Admin\AppData\Local\Temp\is-55EDI.tmp\is-EMHRP.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Local\Temp\is-55EDI.tmp\is-EMHRP.tmpFilesize
659KB
MD563bdf487b26c0886dbced14bab4d4257
SHA1e3621d870aa54d552861f1c71dea1fb36d71def6
SHA256ca5e816fa95cbcd2a880f2c319d3ddf09686e96ee633af63a396969e5e62335a
SHA512b433e540c9da175efdd09d44be39c563176046d89aa03edcc43e3582aa1f180e40e283503d152a46e07d4e77f8fa18b76118e425961b507ad5ca3864c39a7c40
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C:\Users\Admin\AppData\Local\Temp\is-SVNBJ.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Roaming\{0338073a-b1a2-11ed-9ee7-806e6f6e6963}\DUsZavR.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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C:\Users\Admin\AppData\Roaming\{0338073a-b1a2-11ed-9ee7-806e6f6e6963}\DUsZavR.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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memory/1240-160-0x00000000021F0000-0x00000000021F1000-memory.dmpFilesize
4KB
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memory/1240-180-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/1240-198-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/1640-178-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1640-199-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/1640-133-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/3536-166-0x0000000000400000-0x000000000139B000-memory.dmpFilesize
15.6MB
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memory/3536-174-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/3536-182-0x0000000000400000-0x000000000139B000-memory.dmpFilesize
15.6MB
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memory/3536-165-0x0000000000400000-0x000000000139B000-memory.dmpFilesize
15.6MB
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memory/3536-197-0x0000000000400000-0x000000000139B000-memory.dmpFilesize
15.6MB