Analysis
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max time kernel
142s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
18/11/2022, 17:31
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
General
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Target
file.exe
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Size
2.0MB
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MD5
6bda4df70e731dccf6cd2579acbed049
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SHA1
303e9b59175857ac7a14efde86ef4b0b2f82b00e
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SHA256
cd971c247946c3d4b1024b2ea306ce2e2634fb627adb7eb7e9c44cbf4e399d41
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SHA512
7d412b0a4b7bfb665b97b7a46f7515c8b59badff65fc06a3a0f3dd7d27dfb2e910577a2f6d991b3e6975021d3139d40fe9016d9e01b4455e4122f72f963236e4
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SSDEEP
49152:q2h7bsJEygpBTDRpyHqQn0+lnmD7oql9h2XLxIIyHfRx7Pq2:rVbeWfpAK2Ge7aPD
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 2296 is-EI5FD.tmp 2040 grsearcher83.exe 4780 62P1GcocOD.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation grsearcher83.exe -
Loads dropped DLL 1 IoCs
pid Process 2296 is-EI5FD.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-3A5IU.tmp is-EI5FD.tmp File opened for modification C:\Program Files (x86)\grSearcher\grsearcher83.exe is-EI5FD.tmp File created C:\Program Files (x86)\grSearcher\unins000.dat is-EI5FD.tmp File created C:\Program Files (x86)\grSearcher\is-9JS8S.tmp is-EI5FD.tmp File created C:\Program Files (x86)\grSearcher\is-Q2BK1.tmp is-EI5FD.tmp File created C:\Program Files (x86)\grSearcher\is-RL06A.tmp is-EI5FD.tmp File created C:\Program Files (x86)\grSearcher\is-US78C.tmp is-EI5FD.tmp File opened for modification C:\Program Files (x86)\grSearcher\unins000.dat is-EI5FD.tmp File created C:\Program Files (x86)\grSearcher\is-F5K7C.tmp is-EI5FD.tmp File created C:\Program Files (x86)\grSearcher\is-K26OH.tmp is-EI5FD.tmp File created C:\Program Files (x86)\grSearcher\is-6VL9C.tmp is-EI5FD.tmp File created C:\Program Files (x86)\grSearcher\is-VC80Q.tmp is-EI5FD.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 3660 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2040 grsearcher83.exe 2040 grsearcher83.exe 2040 grsearcher83.exe 2040 grsearcher83.exe 2040 grsearcher83.exe 2040 grsearcher83.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3660 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1176 wrote to memory of 2296 1176 file.exe 80 PID 1176 wrote to memory of 2296 1176 file.exe 80 PID 1176 wrote to memory of 2296 1176 file.exe 80 PID 2296 wrote to memory of 2040 2296 is-EI5FD.tmp 81 PID 2296 wrote to memory of 2040 2296 is-EI5FD.tmp 81 PID 2296 wrote to memory of 2040 2296 is-EI5FD.tmp 81 PID 2040 wrote to memory of 4780 2040 grsearcher83.exe 82 PID 2040 wrote to memory of 4780 2040 grsearcher83.exe 82 PID 2040 wrote to memory of 4780 2040 grsearcher83.exe 82 PID 2040 wrote to memory of 1684 2040 grsearcher83.exe 90 PID 2040 wrote to memory of 1684 2040 grsearcher83.exe 90 PID 2040 wrote to memory of 1684 2040 grsearcher83.exe 90 PID 1684 wrote to memory of 3660 1684 cmd.exe 92 PID 1684 wrote to memory of 3660 1684 cmd.exe 92 PID 1684 wrote to memory of 3660 1684 cmd.exe 92
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:1176 -
C:\Users\Admin\AppData\Local\Temp\is-04NNR.tmp\is-EI5FD.tmp"C:\Users\Admin\AppData\Local\Temp\is-04NNR.tmp\is-EI5FD.tmp" /SL4 $8005A "C:\Users\Admin\AppData\Local\Temp\file.exe" 1831591 547842⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2296 -
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:2040 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\62P1GcocOD.exe4⤵
- Executes dropped EXE
PID:4780
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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:1684 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "grsearcher83.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3660
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.8MB
MD51110b6fa7d6b4227481a2a9dc05249f6
SHA1cab5a3a9d454908e294cc114005677bb67d79871
SHA256ad71380e9d3e9967df1a90e849a0ca79ddccf84aba3609a5cf4f9e2e53424fe8
SHA51222730c615196c9f442faab78929a18e00772c1d088e2b1da305422373e1ef9cb527b800deb582e1fcb1ee6b4a4e06f40c63e15591dddea37f8304125d413f46f
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Filesize
2.8MB
MD51110b6fa7d6b4227481a2a9dc05249f6
SHA1cab5a3a9d454908e294cc114005677bb67d79871
SHA256ad71380e9d3e9967df1a90e849a0ca79ddccf84aba3609a5cf4f9e2e53424fe8
SHA51222730c615196c9f442faab78929a18e00772c1d088e2b1da305422373e1ef9cb527b800deb582e1fcb1ee6b4a4e06f40c63e15591dddea37f8304125d413f46f
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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