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Analysis
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max time kernel
62s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
18/10/2022, 22:17
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
2.3MB
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MD5
2475b6b06bc23949d6cb6e37c85855ae
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SHA1
493a0fd8c72ba3f1f11fdf64d8a8f7b718ffbf89
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SHA256
4440750f1c62039c30a02a77ab88df8267585bd8541cf35a3d83a7efef3cf563
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SHA512
7234908a3cd4a7adbb4855458f148f0b2ce58b03fadb74b16f0801864b175d5b8a6dec388e71bb98e69b3d5baff34f2a27c14aca45656420f07782cf4414eec4
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SSDEEP
49152:Z2W+TGPh4xWMDK9DNdW4E1UDvlHLh6IkFVJsqjTVA5hq:MDTGPmxWMD8Wp1UVLQIkLjyDq
Malware Config
Extracted
nymaim
45.15.156.54
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4928 is-LBE64.tmp 4788 ehsearcher52.exe 1392 CgSzbx.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation ehsearcher52.exe -
Loads dropped DLL 1 IoCs
pid Process 4928 is-LBE64.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)\ehSearcher\is-SF9E2.tmp is-LBE64.tmp File created C:\Program Files (x86)\ehSearcher\is-RTNS8.tmp is-LBE64.tmp File created C:\Program Files (x86)\ehSearcher\is-MN820.tmp is-LBE64.tmp File created C:\Program Files (x86)\ehSearcher\is-QK8PS.tmp is-LBE64.tmp File created C:\Program Files (x86)\ehSearcher\is-BJH2Q.tmp is-LBE64.tmp File opened for modification C:\Program Files (x86)\ehSearcher\ehsearcher52.exe is-LBE64.tmp File created C:\Program Files (x86)\ehSearcher\unins000.dat is-LBE64.tmp File created C:\Program Files (x86)\ehSearcher\is-RR2BI.tmp is-LBE64.tmp File created C:\Program Files (x86)\ehSearcher\is-RDNPU.tmp is-LBE64.tmp File created C:\Program Files (x86)\ehSearcher\is-PQ2TP.tmp is-LBE64.tmp File opened for modification C:\Program Files (x86)\ehSearcher\unins000.dat is-LBE64.tmp File created C:\Program Files (x86)\ehSearcher\is-2B547.tmp is-LBE64.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 916 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4788 ehsearcher52.exe 4788 ehsearcher52.exe 4788 ehsearcher52.exe 4788 ehsearcher52.exe 4788 ehsearcher52.exe 4788 ehsearcher52.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 916 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1680 wrote to memory of 4928 1680 file.exe 83 PID 1680 wrote to memory of 4928 1680 file.exe 83 PID 1680 wrote to memory of 4928 1680 file.exe 83 PID 4928 wrote to memory of 4788 4928 is-LBE64.tmp 84 PID 4928 wrote to memory of 4788 4928 is-LBE64.tmp 84 PID 4928 wrote to memory of 4788 4928 is-LBE64.tmp 84 PID 4788 wrote to memory of 1392 4788 ehsearcher52.exe 89 PID 4788 wrote to memory of 1392 4788 ehsearcher52.exe 89 PID 4788 wrote to memory of 1392 4788 ehsearcher52.exe 89 PID 4788 wrote to memory of 1884 4788 ehsearcher52.exe 96 PID 4788 wrote to memory of 1884 4788 ehsearcher52.exe 96 PID 4788 wrote to memory of 1884 4788 ehsearcher52.exe 96 PID 1884 wrote to memory of 916 1884 cmd.exe 98 PID 1884 wrote to memory of 916 1884 cmd.exe 98 PID 1884 wrote to memory of 916 1884 cmd.exe 98
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:1680 -
C:\Users\Admin\AppData\Local\Temp\is-MD68G.tmp\is-LBE64.tmp"C:\Users\Admin\AppData\Local\Temp\is-MD68G.tmp\is-LBE64.tmp" /SL4 $40184 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2150020 527362⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4928 -
C:\Program Files (x86)\ehSearcher\ehsearcher52.exe"C:\Program Files (x86)\ehSearcher\ehsearcher52.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4788 -
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\CgSzbx.exe
- Executes dropped EXE
PID:1392
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "ehsearcher52.exe" /f & erase "C:\Program Files (x86)\ehSearcher\ehsearcher52.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1884 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "ehsearcher52.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:916
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
3.8MB
MD576ce3f8f2f53df7cf2922bf934f826d8
SHA135306f43fa24fd50eeb97d01eb0445e18fe8d482
SHA256a4aca90ad72caebe463ea4a10fbd696bd0d5465ddfbdb6f34a539cfa0ff575ec
SHA51237fef0ac72633db75c4dcf4e5d07ebf67d2baad0f37006b81119d81d3d3a66c3f8db7751dcf67a16896cc3b99c1a5bd0aead352c68be6e605cfd558fde5ab612
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Filesize
3.8MB
MD576ce3f8f2f53df7cf2922bf934f826d8
SHA135306f43fa24fd50eeb97d01eb0445e18fe8d482
SHA256a4aca90ad72caebe463ea4a10fbd696bd0d5465ddfbdb6f34a539cfa0ff575ec
SHA51237fef0ac72633db75c4dcf4e5d07ebf67d2baad0f37006b81119d81d3d3a66c3f8db7751dcf67a16896cc3b99c1a5bd0aead352c68be6e605cfd558fde5ab612
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
657KB
MD57cd12c54a9751ca6eee6ab0c85fb68f5
SHA176562e9b7888b6d20d67addb5a90b68b54a51987
SHA256e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
SHA51227ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
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Filesize
657KB
MD57cd12c54a9751ca6eee6ab0c85fb68f5
SHA176562e9b7888b6d20d67addb5a90b68b54a51987
SHA256e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
SHA51227ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c