Analysis
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max time kernel
47s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
09-04-2023 07:42
Static task
static1
Behavioral task
behavioral1
Sample
1e7fa16e39d299172ecf8763b163e90c.exe
Resource
win7-20230220-en
General
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Target
1e7fa16e39d299172ecf8763b163e90c.exe
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Size
3.0MB
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MD5
1e7fa16e39d299172ecf8763b163e90c
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SHA1
bc0502f470e2e0e81858688ce1aa4fdf71b0f3c9
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SHA256
924b13e4fefe20d456b9d6b602d4fd9a1f20baf806919d6e97b6994bfed72912
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SHA512
177515845113c52c44eac38b86587fd5f871a5fd508844a1132e4bd6b5f6668b8dbd92654fa7c6d6c30ae2a832b547cd02ae485e21f8ac301b40484b4bcde33f
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SSDEEP
49152:qGlJfsT0McIEj9c23fAd1QnMGquM+pVI7B0f7i9QCBgoIXzIh472LIWq8+vK/bjN:7w0McIkfak5qySWW9QCeB2sWJ+vzYylm
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-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation FRec49.exe -
Executes dropped EXE 3 IoCs
Processes:
is-484MT.tmpFRec49.exebMUWx03zw7.exepid process 464 is-484MT.tmp 2228 FRec49.exe 4560 bMUWx03zw7.exe -
Loads dropped DLL 3 IoCs
Processes:
is-484MT.tmppid process 464 is-484MT.tmp 464 is-484MT.tmp 464 is-484MT.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-484MT.tmpdescription ioc process File created C:\Program Files (x86)\FJTsoftFR\Rec49\is-T49E5.tmp is-484MT.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\is-CBVMU.tmp is-484MT.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\is-NF145.tmp is-484MT.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\data\is-H835O.tmp is-484MT.tmp File opened for modification C:\Program Files (x86)\FJTsoftFR\Rec49\unins000.dat is-484MT.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\unins000.dat is-484MT.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\is-94TC3.tmp is-484MT.tmp File created C:\Program Files (x86)\FJTsoftFR\Rec49\is-OR93N.tmp is-484MT.tmp File opened for modification C:\Program Files (x86)\FJTsoftFR\Rec49\FRec49.exe is-484MT.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 1596 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
FRec49.exepid process 2228 FRec49.exe 2228 FRec49.exe 2228 FRec49.exe 2228 FRec49.exe 2228 FRec49.exe 2228 FRec49.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 1596 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
1e7fa16e39d299172ecf8763b163e90c.exeis-484MT.tmpFRec49.execmd.exedescription pid process target process PID 4828 wrote to memory of 464 4828 1e7fa16e39d299172ecf8763b163e90c.exe is-484MT.tmp PID 4828 wrote to memory of 464 4828 1e7fa16e39d299172ecf8763b163e90c.exe is-484MT.tmp PID 4828 wrote to memory of 464 4828 1e7fa16e39d299172ecf8763b163e90c.exe is-484MT.tmp PID 464 wrote to memory of 2228 464 is-484MT.tmp FRec49.exe PID 464 wrote to memory of 2228 464 is-484MT.tmp FRec49.exe PID 464 wrote to memory of 2228 464 is-484MT.tmp FRec49.exe PID 2228 wrote to memory of 4560 2228 FRec49.exe bMUWx03zw7.exe PID 2228 wrote to memory of 4560 2228 FRec49.exe bMUWx03zw7.exe PID 2228 wrote to memory of 4560 2228 FRec49.exe bMUWx03zw7.exe PID 2228 wrote to memory of 3664 2228 FRec49.exe cmd.exe PID 2228 wrote to memory of 3664 2228 FRec49.exe cmd.exe PID 2228 wrote to memory of 3664 2228 FRec49.exe cmd.exe PID 3664 wrote to memory of 1596 3664 cmd.exe taskkill.exe PID 3664 wrote to memory of 1596 3664 cmd.exe taskkill.exe PID 3664 wrote to memory of 1596 3664 cmd.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1e7fa16e39d299172ecf8763b163e90c.exe"C:\Users\Admin\AppData\Local\Temp\1e7fa16e39d299172ecf8763b163e90c.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4828 -
C:\Users\Admin\AppData\Local\Temp\is-BNR4D.tmp\is-484MT.tmp"C:\Users\Admin\AppData\Local\Temp\is-BNR4D.tmp\is-484MT.tmp" /SL4 $A0054 "C:\Users\Admin\AppData\Local\Temp\1e7fa16e39d299172ecf8763b163e90c.exe" 2892115 563202⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:464 -
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
PID:2228 -
C:\Users\Admin\AppData\Roaming\{5cebde14-b1a3-11ed-bd92-806e6f6e6963}\bMUWx03zw7.exe
- Executes dropped EXE
PID:4560 -
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
PID:3664 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "FRec49.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1596
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Program Files (x86)\FJTsoftFR\Rec49\FRec49.exeFilesize
3.2MB
MD5665b5f097f1e8ff273f3d55f3bb12eb0
SHA1abf9cc2b3bcd78b5ea73575f9d942b02592c6d6e
SHA256fafac0880146d282371ebde79b2fd337fdd5b20439bb748a982333ed3ab3f07b
SHA51251867656b538db866c0141532da784d46306c663c3f9fdb0f2cadcc54207efc26f94635a068fe5862585e1929cc802f9788fa22546d554f6642b6a9a3730bcab
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C:\Program Files (x86)\FJTsoftFR\Rec49\FRec49.exeFilesize
3.2MB
MD5665b5f097f1e8ff273f3d55f3bb12eb0
SHA1abf9cc2b3bcd78b5ea73575f9d942b02592c6d6e
SHA256fafac0880146d282371ebde79b2fd337fdd5b20439bb748a982333ed3ab3f07b
SHA51251867656b538db866c0141532da784d46306c663c3f9fdb0f2cadcc54207efc26f94635a068fe5862585e1929cc802f9788fa22546d554f6642b6a9a3730bcab
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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\0BMP3ERH\dll[1].htmFilesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
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C:\Users\Admin\AppData\Local\Temp\is-BNR4D.tmp\is-484MT.tmpFilesize
659KB
MD557d101722b08967ce53be6109b7f6ccf
SHA1f62e5f39efbfb03d0ddd822963122eb1945d9f18
SHA2565b433440454647dc2775cacf3258f2272cb2fc0ec870b862744aad4ee7bc7ec9
SHA51257158b946d08d669967f8b09dde8a44a1e2c94ac0a313aa6f3eb52c651c73e7546b085a201847757ac15911d797a8fb2032a13e845b790af5279abd344793f4b
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C:\Users\Admin\AppData\Local\Temp\is-BNR4D.tmp\is-484MT.tmpFilesize
659KB
MD557d101722b08967ce53be6109b7f6ccf
SHA1f62e5f39efbfb03d0ddd822963122eb1945d9f18
SHA2565b433440454647dc2775cacf3258f2272cb2fc0ec870b862744aad4ee7bc7ec9
SHA51257158b946d08d669967f8b09dde8a44a1e2c94ac0a313aa6f3eb52c651c73e7546b085a201847757ac15911d797a8fb2032a13e845b790af5279abd344793f4b
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C:\Users\Admin\AppData\Local\Temp\is-U1I18.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-U1I18.tmp\_isetup\_isdecmp.dllFilesize
13KB
MD5a813d18268affd4763dde940246dc7e5
SHA1c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
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C:\Users\Admin\AppData\Local\Temp\is-U1I18.tmp\_isetup\_isdecmp.dllFilesize
13KB
MD5a813d18268affd4763dde940246dc7e5
SHA1c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
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C:\Users\Admin\AppData\Roaming\{5cebde14-b1a3-11ed-bd92-806e6f6e6963}\bMUWx03zw7.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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C:\Users\Admin\AppData\Roaming\{5cebde14-b1a3-11ed-bd92-806e6f6e6963}\bMUWx03zw7.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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memory/464-186-0x0000000000790000-0x0000000000791000-memory.dmpFilesize
4KB
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memory/464-185-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/464-206-0x0000000000400000-0x00000000004B4000-memory.dmpFilesize
720KB
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memory/464-139-0x0000000000790000-0x0000000000791000-memory.dmpFilesize
4KB
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memory/2228-171-0x0000000000400000-0x000000000152F000-memory.dmpFilesize
17.2MB
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memory/2228-181-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/2228-188-0x0000000000400000-0x000000000152F000-memory.dmpFilesize
17.2MB
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memory/2228-172-0x0000000000400000-0x000000000152F000-memory.dmpFilesize
17.2MB
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memory/2228-205-0x0000000000400000-0x000000000152F000-memory.dmpFilesize
17.2MB
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memory/4828-173-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/4828-133-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/4828-208-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB