Analysis
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max time kernel
144s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
18/11/2022, 19:01
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
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Target
file.exe
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Size
2.0MB
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MD5
4e77619a5e7a42bd36adf716701e95be
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SHA1
b23cc57112015b136221c7ee3a43f63a67104e2a
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SHA256
d52915dfb4d46b9f4a91d0f828d85fb33796fdff7d58c137b2fab68cfa889980
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SHA512
6314a6af252e9b4a0b1a2f4be8b3f2e7600f4b8de7e19c13a84b1782027c8078e6f883200e37ddc822a926d0a4eb620a4fa651f43e42202855e12eb6b13990fe
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SSDEEP
49152:q2EcBxLykb4ouoTCoEhIOWQFV6o7fyHfRx7Pq2:rEcT+kb4olchFVX7aPD
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4820 is-6N58O.tmp 2616 grsearcher83.exe 4260 zlMhf52.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-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation grsearcher83.exe -
Loads dropped DLL 1 IoCs
pid Process 4820 is-6N58O.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\unins000.dat is-6N58O.tmp File created C:\Program Files (x86)\grSearcher\is-437RR.tmp is-6N58O.tmp File created C:\Program Files (x86)\grSearcher\is-PIHRB.tmp is-6N58O.tmp File opened for modification C:\Program Files (x86)\grSearcher\unins000.dat is-6N58O.tmp File opened for modification C:\Program Files (x86)\grSearcher\grsearcher83.exe is-6N58O.tmp File created C:\Program Files (x86)\grSearcher\is-M8S99.tmp is-6N58O.tmp File created C:\Program Files (x86)\grSearcher\is-153SB.tmp is-6N58O.tmp File created C:\Program Files (x86)\grSearcher\is-JMPQN.tmp is-6N58O.tmp File created C:\Program Files (x86)\grSearcher\is-MD8TM.tmp is-6N58O.tmp File created C:\Program Files (x86)\grSearcher\is-M9V5J.tmp is-6N58O.tmp File created C:\Program Files (x86)\grSearcher\is-7H4QD.tmp is-6N58O.tmp File created C:\Program Files (x86)\grSearcher\is-E0P4M.tmp is-6N58O.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 4048 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2616 grsearcher83.exe 2616 grsearcher83.exe 2616 grsearcher83.exe 2616 grsearcher83.exe 2616 grsearcher83.exe 2616 grsearcher83.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2616 grsearcher83.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4048 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 3264 wrote to memory of 4820 3264 file.exe 83 PID 3264 wrote to memory of 4820 3264 file.exe 83 PID 3264 wrote to memory of 4820 3264 file.exe 83 PID 4820 wrote to memory of 2616 4820 is-6N58O.tmp 84 PID 4820 wrote to memory of 2616 4820 is-6N58O.tmp 84 PID 4820 wrote to memory of 2616 4820 is-6N58O.tmp 84 PID 2616 wrote to memory of 4260 2616 grsearcher83.exe 85 PID 2616 wrote to memory of 4260 2616 grsearcher83.exe 85 PID 2616 wrote to memory of 4260 2616 grsearcher83.exe 85 PID 2616 wrote to memory of 4728 2616 grsearcher83.exe 89 PID 2616 wrote to memory of 4728 2616 grsearcher83.exe 89 PID 2616 wrote to memory of 4728 2616 grsearcher83.exe 89 PID 4728 wrote to memory of 4048 4728 cmd.exe 91 PID 4728 wrote to memory of 4048 4728 cmd.exe 91 PID 4728 wrote to memory of 4048 4728 cmd.exe 91
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:3264 -
C:\Users\Admin\AppData\Local\Temp\is-MNQO8.tmp\is-6N58O.tmp"C:\Users\Admin\AppData\Local\Temp\is-MNQO8.tmp\is-6N58O.tmp" /SL4 $801D2 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1799804 547842⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4820 -
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 behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2616 -
C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\zlMhf52.exe4⤵
- Executes dropped EXE
PID:4260
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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:4728 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "grsearcher83.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4048
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.8MB
MD54a9101315feaa042501898a516c9231e
SHA1ea7b8b8b17f968dfbdbd6855c3c9bb365ae4d438
SHA256428cdf0c5b694c0bf594ca9f5ab485de2fc41f8e5f8773fed56caa55f584744f
SHA5122e3d764ff8c76d8b43802f989148aa1176bc2d300a8279646bbefa335b2706281cfcf24c7efc9a6a822e3738f0b5edf646dcbc89917a331449afed8db5020287
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Filesize
2.8MB
MD54a9101315feaa042501898a516c9231e
SHA1ea7b8b8b17f968dfbdbd6855c3c9bb365ae4d438
SHA256428cdf0c5b694c0bf594ca9f5ab485de2fc41f8e5f8773fed56caa55f584744f
SHA5122e3d764ff8c76d8b43802f989148aa1176bc2d300a8279646bbefa335b2706281cfcf24c7efc9a6a822e3738f0b5edf646dcbc89917a331449afed8db5020287
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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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
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c