Analysis
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max time kernel
118s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
21-01-2024 19:21
Static task
static1
Behavioral task
behavioral1
Sample
24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe
Resource
win7-20231215-en
General
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Target
24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe
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Size
7.5MB
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MD5
43a8636f8748675fb63d026bae9c73b3
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SHA1
e9f2c0a7e105fe35d3bf72b2cd014d32476e0780
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SHA256
24fca3cd8aad055b2284fdf5c0cd73642b88bb19de7c3137361e46529da5b67f
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SHA512
77bfff59dfa5cff7b66f940e827964635842a5e1ca683ace0af8831e3718f1f542aa5be2628357fa66b7929ad2d0f8fc4b03ede3602a429aef0dfc64e9f8309c
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SSDEEP
98304:nVEhTEPMnmpIOHOdMJ7/nATC4K7XsWkkjaHjTo82Pb0cM:nKqPo5MJzATC4C8Wfsj
Malware Config
Extracted
cryptbot
http://fygbib44.top/gate.php
Signatures
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Deletes itself 1 IoCs
Processes:
cmd.exepid process 2776 cmd.exe -
Executes dropped EXE 1 IoCs
Processes:
sartst.exepid process 1704 sartst.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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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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Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2848 timeout.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exepid process 2900 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.execmd.exetaskeng.execmd.exedescription pid process target process PID 2900 wrote to memory of 2372 2900 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe cmd.exe PID 2900 wrote to memory of 2372 2900 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe cmd.exe PID 2900 wrote to memory of 2372 2900 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe cmd.exe PID 2900 wrote to memory of 2372 2900 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe cmd.exe PID 2372 wrote to memory of 1888 2372 cmd.exe schtasks.exe PID 2372 wrote to memory of 1888 2372 cmd.exe schtasks.exe PID 2372 wrote to memory of 1888 2372 cmd.exe schtasks.exe PID 2372 wrote to memory of 1888 2372 cmd.exe schtasks.exe PID 2872 wrote to memory of 1704 2872 taskeng.exe sartst.exe PID 2872 wrote to memory of 1704 2872 taskeng.exe sartst.exe PID 2872 wrote to memory of 1704 2872 taskeng.exe sartst.exe PID 2872 wrote to memory of 1704 2872 taskeng.exe sartst.exe PID 2900 wrote to memory of 2776 2900 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe cmd.exe PID 2900 wrote to memory of 2776 2900 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe cmd.exe PID 2900 wrote to memory of 2776 2900 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe cmd.exe PID 2900 wrote to memory of 2776 2900 24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe cmd.exe PID 2776 wrote to memory of 2848 2776 cmd.exe timeout.exe PID 2776 wrote to memory of 2848 2776 cmd.exe timeout.exe PID 2776 wrote to memory of 2848 2776 cmd.exe timeout.exe PID 2776 wrote to memory of 2848 2776 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe"C:\Users\Admin\AppData\Local\Temp\24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe"1⤵
- Maps connected drives based on registry
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2900 -
C:\Windows\SysWOW64\cmd.exe/C schtasks.exe /create /tn \Ww\dthebvdsci /tr """"C:\Users\Admin\AppData\Roaming\jkpopel\sartst.exe""" """C:\Users\Admin\AppData\Roaming\jkpopel\sartst.chm"""" /sc once /ri 1 /f /du 979:19 /st 00:022⤵
- Suspicious use of WriteProcessMemory
PID:2372 -
C:\Windows\SysWOW64\schtasks.exeschtasks.exe /create /tn \Ww\dthebvdsci /tr """"C:\Users\Admin\AppData\Roaming\jkpopel\sartst.exe""" """C:\Users\Admin\AppData\Roaming\jkpopel\sartst.chm"""" /sc once /ri 1 /f /du 979:19 /st 00:023⤵
- Creates scheduled task(s)
PID:1888 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout -t 5 && del "C:\Users\Admin\AppData\Local\Temp\24FCA3CD8AAD055B2284FDF5C0CD73642B88BB19DE7C3.exe"2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:2776 -
C:\Windows\SysWOW64\timeout.exetimeout -t 53⤵
- Delays execution with timeout.exe
PID:2848
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C:\Windows\system32\taskeng.exetaskeng.exe {08D83EAF-66D9-4A7D-A708-140C8A83B7A9} S-1-5-21-452311807-3713411997-1028535425-1000:OZEMQECW\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2872 -
C:\Users\Admin\AppData\Roaming\jkpopel\sartst.exeC:\Users\Admin\AppData\Roaming\jkpopel\sartst.exe "C:\Users\Admin\AppData\Roaming\jkpopel\sartst.chm"2⤵
- Executes dropped EXE
PID:1704
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
32B
MD57abc3c55ef7a800a7d401f89266a7020
SHA13722eb1d69211675424888bf2b30f300342c8e27
SHA2568d277404ab24c960a7cd89358067a7e4dd03dcdffc2a319bc5bcae65121b6f8e
SHA5122357bda3db7b81f3faa824eb7c62e164386906ad956fbbe60f4db86a2419bac4e458ef2a2b2fc3f369047a2bad0b7b04f8efaa0b361ea9327400eb10d0aca6ef
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Filesize
114KB
MD5ad744014b6f94499aa8f0d8637b516c4
SHA1ecda999247b671ebf688540815576c6a223e01d2
SHA256ed37ec732417d663e48ef8187413def51433a6b83cf1d3babb5fefd39b5189d7
SHA51243c1e8d45216d376d1dab7cd54eefc4edcb6b53be66cf0db30fb7d20ea0b5cbe456c5395b061ac61fc2bfd59d8431c2ca2678cc4f4134c8fc60244bfab88e3d6
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Filesize
131KB
MD5205adf0244fdafdf409d366d1618ca07
SHA1cda1296a776c9f4fadf0ca6def2822e47c3b3b6a
SHA25671be9814ee36a738ecca0d0d62e0172223bd32ee68b20727f42b4269f408d944
SHA5123b3be95ace9c74cded169a3692a5e013451353e9002da767c57fa50c1f105f5642e4377a6272174c43341308f42373f75c160b5320aa43e4bf5b38e967062fbf
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Filesize
872KB
MD5c56b5f0201a3b3de53e561fe76912bfd
SHA12a4062e10a5de813f5688221dbeb3f3ff33eb417
SHA256237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
SHA512195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c