Analysis
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max time kernel
91s -
max time network
137s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
18/11/2022, 18:32
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
General
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Target
file.exe
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Size
2.1MB
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MD5
78045aa12b2d4f78ceba2dd20601bba2
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SHA1
76bf242f2a643b77366a8cbf167bc34d089d6f7c
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SHA256
b871297076424a16580b9f2a5d748beb39ce2f9a48884a905ffa9d168d752515
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SHA512
d5f74f09171607e212129ff94f9dcafff02b5f5d4118352eccf43b5f18bb7b014b785dc4d573adfbf88840cfc5c6f8545f205e056084246a543223ffdbcef4c5
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SSDEEP
49152:q2QmvuQZ7Cibr0eEReRRrqEB99nYPLMRZrMTS+8gWKGyHfRx7Pq2:r5vzZuAr0svqEBznYPLMR9MTSjY7PD
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 5024 is-QI1HJ.tmp 4580 grsearcher83.exe 3744 ym1aXyYFE.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation grsearcher83.exe -
Loads dropped DLL 1 IoCs
pid Process 5024 is-QI1HJ.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 12 IoCs
description ioc Process File created C:\Program Files (x86)\grSearcher\is-B0SMK.tmp is-QI1HJ.tmp File created C:\Program Files (x86)\grSearcher\is-QV0AO.tmp is-QI1HJ.tmp File opened for modification C:\Program Files (x86)\grSearcher\unins000.dat is-QI1HJ.tmp File created C:\Program Files (x86)\grSearcher\unins000.dat is-QI1HJ.tmp File created C:\Program Files (x86)\grSearcher\is-U1JUO.tmp is-QI1HJ.tmp File created C:\Program Files (x86)\grSearcher\is-0JM4L.tmp is-QI1HJ.tmp File created C:\Program Files (x86)\grSearcher\is-P5LKV.tmp is-QI1HJ.tmp File created C:\Program Files (x86)\grSearcher\is-IIT7G.tmp is-QI1HJ.tmp File created C:\Program Files (x86)\grSearcher\is-57EMG.tmp is-QI1HJ.tmp File created C:\Program Files (x86)\grSearcher\is-1637C.tmp is-QI1HJ.tmp File created C:\Program Files (x86)\grSearcher\is-F69N1.tmp is-QI1HJ.tmp File opened for modification C:\Program Files (x86)\grSearcher\grsearcher83.exe is-QI1HJ.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
pid Process 4724 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4580 grsearcher83.exe 4580 grsearcher83.exe 4580 grsearcher83.exe 4580 grsearcher83.exe 4580 grsearcher83.exe 4580 grsearcher83.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4724 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 5036 wrote to memory of 5024 5036 file.exe 81 PID 5036 wrote to memory of 5024 5036 file.exe 81 PID 5036 wrote to memory of 5024 5036 file.exe 81 PID 5024 wrote to memory of 4580 5024 is-QI1HJ.tmp 82 PID 5024 wrote to memory of 4580 5024 is-QI1HJ.tmp 82 PID 5024 wrote to memory of 4580 5024 is-QI1HJ.tmp 82 PID 4580 wrote to memory of 3744 4580 grsearcher83.exe 86 PID 4580 wrote to memory of 3744 4580 grsearcher83.exe 86 PID 4580 wrote to memory of 3744 4580 grsearcher83.exe 86 PID 4580 wrote to memory of 2336 4580 grsearcher83.exe 91 PID 4580 wrote to memory of 2336 4580 grsearcher83.exe 91 PID 4580 wrote to memory of 2336 4580 grsearcher83.exe 91 PID 2336 wrote to memory of 4724 2336 cmd.exe 93 PID 2336 wrote to memory of 4724 2336 cmd.exe 93 PID 2336 wrote to memory of 4724 2336 cmd.exe 93
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
PID:5036 -
C:\Users\Admin\AppData\Local\Temp\is-65TDC.tmp\is-QI1HJ.tmp"C:\Users\Admin\AppData\Local\Temp\is-65TDC.tmp\is-QI1HJ.tmp" /SL4 $501BE "C:\Users\Admin\AppData\Local\Temp\file.exe" 1985635 547842⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:5024 -
C:\Program Files (x86)\grSearcher\grsearcher83.exe"C:\Program Files (x86)\grSearcher\grsearcher83.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4580 -
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\ym1aXyYFE.exe4⤵
- Executes dropped EXE
PID:3744
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "grsearcher83.exe" /f & erase "C:\Program Files (x86)\grSearcher\grsearcher83.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:2336 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "grsearcher83.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4724
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.0MB
MD591c2778b379a8250e87bacc3edfc8ff9
SHA15a307a79e37e6a9bfb484c102f961eb4c7e813fd
SHA2564ca802a7d39426e152b5e040dfc55aab60d9505675a5e65271c0b748cbc83da8
SHA512fe60545cf3570e057228decdcc8bca81042271e4d85064c9ca9367dd1c9dcda9409a97dc6981a04d64ab49cfc48247d0e341f285f2eeece526eb996a3fa2a1ad
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Filesize
3.0MB
MD591c2778b379a8250e87bacc3edfc8ff9
SHA15a307a79e37e6a9bfb484c102f961eb4c7e813fd
SHA2564ca802a7d39426e152b5e040dfc55aab60d9505675a5e65271c0b748cbc83da8
SHA512fe60545cf3570e057228decdcc8bca81042271e4d85064c9ca9367dd1c9dcda9409a97dc6981a04d64ab49cfc48247d0e341f285f2eeece526eb996a3fa2a1ad
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Filesize
659KB
MD534a3efb47055787f7a4537fb08fb93ec
SHA17396195a1bc60f31bb90b5c8abf4b4ce95ec06f9
SHA256fe0505386751f6c7a49d4b3594cc99c8936a9906e49c595934e586f0b9a9e409
SHA512055b18c604aa583f0150f39e564438e15cd07dff308212a2c508978e2347224e2c7979f5066fb4f4e9073d5a76ee845d659214cd5f8669ce808e74d0078520ff
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Filesize
659KB
MD534a3efb47055787f7a4537fb08fb93ec
SHA17396195a1bc60f31bb90b5c8abf4b4ce95ec06f9
SHA256fe0505386751f6c7a49d4b3594cc99c8936a9906e49c595934e586f0b9a9e409
SHA512055b18c604aa583f0150f39e564438e15cd07dff308212a2c508978e2347224e2c7979f5066fb4f4e9073d5a76ee845d659214cd5f8669ce808e74d0078520ff
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c