Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
23-11-2022 13:31
Static task
static1
Behavioral task
behavioral1
Sample
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe
Resource
win10v2004-20220812-en
General
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Target
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe
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Size
399KB
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MD5
5c1914a1d3b7ccaebcfe1a6f8e05bfcf
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SHA1
21f033a91fc03a14b41490e2a17244f88bc336ba
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SHA256
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c
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SHA512
927c8bf70ae806b7876558f17e1118dbcb1d1f7aa28ea478e276b871f80ae71239db6bbcaf67f6cebb35b84965bf56af58c3335d2bf896065e95d419fd89b59b
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SSDEEP
6144:WAZRkz3xBb+XflYP4ZJhjaYYXDMBL3cN8a0SF1TCqzR7FL:H7g3zqlYPsJhjEMBLm8AdN5
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
bqhffugz.exepid process 4072 bqhffugz.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
bqhffugz.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NUMxOTE0QTFEM0I3Q0NBRU = "C:\\ProgramData\\bqhffugz.exe" bqhffugz.exe -
Drops desktop.ini file(s) 2 IoCs
Processes:
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exedescription ioc process File created C:\Windows\assembly\Desktop.ini 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe File opened for modification C:\Windows\assembly\Desktop.ini 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe -
Drops file in Windows directory 3 IoCs
Processes:
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exedescription ioc process File opened for modification C:\Windows\assembly\Desktop.ini 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe File opened for modification C:\Windows\assembly 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe File created C:\Windows\assembly\Desktop.ini 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 4 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exebqhffugz.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 bqhffugz.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier bqhffugz.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exebqhffugz.exedescription pid process Token: SeDebugPrivilege 2424 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe Token: SeDebugPrivilege 4072 bqhffugz.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exedescription pid process target process PID 2424 wrote to memory of 4072 2424 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe bqhffugz.exe PID 2424 wrote to memory of 4072 2424 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe bqhffugz.exe PID 2424 wrote to memory of 4072 2424 9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe bqhffugz.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe"C:\Users\Admin\AppData\Local\Temp\9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe"1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2424 -
C:\ProgramData\bqhffugz.exe"C:\ProgramData\bqhffugz.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:4072
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
399KB
MD55c1914a1d3b7ccaebcfe1a6f8e05bfcf
SHA121f033a91fc03a14b41490e2a17244f88bc336ba
SHA2569f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c
SHA512927c8bf70ae806b7876558f17e1118dbcb1d1f7aa28ea478e276b871f80ae71239db6bbcaf67f6cebb35b84965bf56af58c3335d2bf896065e95d419fd89b59b
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Filesize
399KB
MD55c1914a1d3b7ccaebcfe1a6f8e05bfcf
SHA121f033a91fc03a14b41490e2a17244f88bc336ba
SHA2569f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c
SHA512927c8bf70ae806b7876558f17e1118dbcb1d1f7aa28ea478e276b871f80ae71239db6bbcaf67f6cebb35b84965bf56af58c3335d2bf896065e95d419fd89b59b