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Analysis
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max time kernel
90s -
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, 15:01
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
2.4MB
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MD5
5125c8c7d24bc25c87cf23084a964820
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SHA1
7216db1d7a2a818767fdebe866f3444de2bc4213
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SHA256
291618a72c8fcc5ff05f289b1ff9248fd127e75057aa7091b070935f1405834a
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SHA512
4d16f43e85b864e01f7bbb087543a236804b7e34c0b90a5524bcfbf3b271cab76d93b2f598f54967da165c270411682bfa518f818392516dbb116e1aa9c05487
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SSDEEP
49152:Z2omzyhRyo2SqQak7RUa73vBgUXRoRV2Cgr9u4bvFsa0cmeTA5hq:MoksrPqE1N7fBpRSV2hwkvM3Dq
Malware Config
Extracted
nymaim
45.15.156.54
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 820 is-KSEDB.tmp 4352 ehsearcher52.exe 2508 U0YGzPe6Age5H.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 ehsearcher52.exe -
Loads dropped DLL 1 IoCs
pid Process 820 is-KSEDB.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-HKI4A.tmp is-KSEDB.tmp File created C:\Program Files (x86)\ehSearcher\is-15V8U.tmp is-KSEDB.tmp File created C:\Program Files (x86)\ehSearcher\is-ILGLL.tmp is-KSEDB.tmp File created C:\Program Files (x86)\ehSearcher\is-TTNS7.tmp is-KSEDB.tmp File opened for modification C:\Program Files (x86)\ehSearcher\ehsearcher52.exe is-KSEDB.tmp File created C:\Program Files (x86)\ehSearcher\unins000.dat is-KSEDB.tmp File created C:\Program Files (x86)\ehSearcher\is-FU56Q.tmp is-KSEDB.tmp File created C:\Program Files (x86)\ehSearcher\is-G6KHF.tmp is-KSEDB.tmp File created C:\Program Files (x86)\ehSearcher\is-OAFPP.tmp is-KSEDB.tmp File opened for modification C:\Program Files (x86)\ehSearcher\unins000.dat is-KSEDB.tmp File created C:\Program Files (x86)\ehSearcher\is-3T7MC.tmp is-KSEDB.tmp File created C:\Program Files (x86)\ehSearcher\is-RGR8R.tmp is-KSEDB.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 3516 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4352 ehsearcher52.exe 4352 ehsearcher52.exe 4352 ehsearcher52.exe 4352 ehsearcher52.exe 4352 ehsearcher52.exe 4352 ehsearcher52.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3516 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4740 wrote to memory of 820 4740 file.exe 82 PID 4740 wrote to memory of 820 4740 file.exe 82 PID 4740 wrote to memory of 820 4740 file.exe 82 PID 820 wrote to memory of 4352 820 is-KSEDB.tmp 83 PID 820 wrote to memory of 4352 820 is-KSEDB.tmp 83 PID 820 wrote to memory of 4352 820 is-KSEDB.tmp 83 PID 4352 wrote to memory of 2508 4352 ehsearcher52.exe 87 PID 4352 wrote to memory of 2508 4352 ehsearcher52.exe 87 PID 4352 wrote to memory of 2508 4352 ehsearcher52.exe 87 PID 4352 wrote to memory of 3620 4352 ehsearcher52.exe 92 PID 4352 wrote to memory of 3620 4352 ehsearcher52.exe 92 PID 4352 wrote to memory of 3620 4352 ehsearcher52.exe 92 PID 3620 wrote to memory of 3516 3620 cmd.exe 94 PID 3620 wrote to memory of 3516 3620 cmd.exe 94 PID 3620 wrote to memory of 3516 3620 cmd.exe 94
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:4740 -
C:\Users\Admin\AppData\Local\Temp\is-FTK1C.tmp\is-KSEDB.tmp"C:\Users\Admin\AppData\Local\Temp\is-FTK1C.tmp\is-KSEDB.tmp" /SL4 $801D6 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2302895 527362⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:820 -
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:4352 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\U0YGzPe6Age5H.exe
- Executes dropped EXE
PID:2508
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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:3620 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "ehsearcher52.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3516
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
4.0MB
MD50d6cc1d0591efeb1f882ce68615ea8a7
SHA112fea6e2ca09344988eac4745ee637f4b4befc08
SHA25675ba3f2e977347333766cb0f5cccdca6e96d260523ba4b2dd01e39c6fcccdb0a
SHA5127bbcbd57829df3f1df8151c04e74f703749b4d05c30df5ac0db6efc5e5d63899ecb6e3270cabe665493001cebc2f61bf1820d25b443664c77771f565a27cfdc9
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Filesize
4.0MB
MD50d6cc1d0591efeb1f882ce68615ea8a7
SHA112fea6e2ca09344988eac4745ee637f4b4befc08
SHA25675ba3f2e977347333766cb0f5cccdca6e96d260523ba4b2dd01e39c6fcccdb0a
SHA5127bbcbd57829df3f1df8151c04e74f703749b4d05c30df5ac0db6efc5e5d63899ecb6e3270cabe665493001cebc2f61bf1820d25b443664c77771f565a27cfdc9
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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