Analysis
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max time kernel
88s -
max time network
130s -
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, 19:32
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
559cbb9a323fc29b39715cbdbc480f8e
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SHA1
46b801aab6afb6e901a575afe4175d2df7e922a6
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SHA256
1388b3bbc6ddd08cef82882644255b59520371edce6480d254e8b7b6d1e38103
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SHA512
7f2598d743bd47e317660076dc19bfacd37d462fd11290b8f610158b116f821a8235f11d68336f49a3dd4625fa5aaf1078e8cef85504116dee5f519497146702
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SSDEEP
49152:q2K3jyF7YRtTBCWbLp3k8ANvZG52TUokLgyhrDs3yHfRx7Pq2:rlQTBCWR0HNO8UokdhvsiPD
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4908 is-ON84D.tmp 1008 grsearcher83.exe 3156 EqKq51NMM.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 4908 is-ON84D.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-IU6UA.tmp is-ON84D.tmp File created C:\Program Files (x86)\grSearcher\is-VLLT8.tmp is-ON84D.tmp File created C:\Program Files (x86)\grSearcher\is-P39N4.tmp is-ON84D.tmp File created C:\Program Files (x86)\grSearcher\is-L81KR.tmp is-ON84D.tmp File created C:\Program Files (x86)\grSearcher\is-I7GJD.tmp is-ON84D.tmp File created C:\Program Files (x86)\grSearcher\is-SCHBP.tmp is-ON84D.tmp File created C:\Program Files (x86)\grSearcher\is-9B7RB.tmp is-ON84D.tmp File created C:\Program Files (x86)\grSearcher\is-DKTV1.tmp is-ON84D.tmp File created C:\Program Files (x86)\grSearcher\is-AJGPC.tmp is-ON84D.tmp File opened for modification C:\Program Files (x86)\grSearcher\unins000.dat is-ON84D.tmp File opened for modification C:\Program Files (x86)\grSearcher\grsearcher83.exe is-ON84D.tmp File created C:\Program Files (x86)\grSearcher\unins000.dat is-ON84D.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 4836 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1008 grsearcher83.exe 1008 grsearcher83.exe 1008 grsearcher83.exe 1008 grsearcher83.exe 1008 grsearcher83.exe 1008 grsearcher83.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4836 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 5048 wrote to memory of 4908 5048 file.exe 83 PID 5048 wrote to memory of 4908 5048 file.exe 83 PID 5048 wrote to memory of 4908 5048 file.exe 83 PID 4908 wrote to memory of 1008 4908 is-ON84D.tmp 84 PID 4908 wrote to memory of 1008 4908 is-ON84D.tmp 84 PID 4908 wrote to memory of 1008 4908 is-ON84D.tmp 84 PID 1008 wrote to memory of 3156 1008 grsearcher83.exe 88 PID 1008 wrote to memory of 3156 1008 grsearcher83.exe 88 PID 1008 wrote to memory of 3156 1008 grsearcher83.exe 88 PID 1008 wrote to memory of 1356 1008 grsearcher83.exe 93 PID 1008 wrote to memory of 1356 1008 grsearcher83.exe 93 PID 1008 wrote to memory of 1356 1008 grsearcher83.exe 93 PID 1356 wrote to memory of 4836 1356 cmd.exe 95 PID 1356 wrote to memory of 4836 1356 cmd.exe 95 PID 1356 wrote to memory of 4836 1356 cmd.exe 95
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:5048 -
C:\Users\Admin\AppData\Local\Temp\is-4V88M.tmp\is-ON84D.tmp"C:\Users\Admin\AppData\Local\Temp\is-4V88M.tmp\is-ON84D.tmp" /SL4 $8006A "C:\Users\Admin\AppData\Local\Temp\file.exe" 1985487 547842⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4908 -
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:1008 -
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\EqKq51NMM.exe4⤵
- Executes dropped EXE
PID:3156
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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:1356 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "grsearcher83.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4836
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.0MB
MD5fa5aef53443b1833d4f156da3bcd028b
SHA129eeeee9c362b32430521c2face6f71a02c7de40
SHA25659d1ca95a074360e1b01d7889c1653defe0d2ba25a517226a5697d2f05c05042
SHA512f8f1ac955d5d7aeb1993b6c82741f8f2f4e503bc17b396fe9a89ec4523a7f6b96fc93b2d878334751a7c01efc0d253c7e9c7e7746aa0308ce97b28cc45c6df4c
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Filesize
3.0MB
MD5fa5aef53443b1833d4f156da3bcd028b
SHA129eeeee9c362b32430521c2face6f71a02c7de40
SHA25659d1ca95a074360e1b01d7889c1653defe0d2ba25a517226a5697d2f05c05042
SHA512f8f1ac955d5d7aeb1993b6c82741f8f2f4e503bc17b396fe9a89ec4523a7f6b96fc93b2d878334751a7c01efc0d253c7e9c7e7746aa0308ce97b28cc45c6df4c
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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