Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
04-11-2024 22:04
Static task
static1
Behavioral task
behavioral1
Sample
47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe
Resource
win10v2004-20241007-en
General
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Target
47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe
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Size
5.6MB
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MD5
852716a2d44e0122b5ce700105964253
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SHA1
48fbbc7796850d5edb57f11378a67c10270a8d38
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SHA256
47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73
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SHA512
efdf7f5393a7532f6772b7e68a644b691256f69f3303d11022a39fa2e9dabc0fa70ad932713357836aed2d0e2d8a4fbd425d57fd82b4306141e4ba90f3267aad
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SSDEEP
98304:qiRmxZFsM4kxzDcT+GcY437KvDwEHuujlsaSzsC0p43MpQdZ9nc+fsCb+oSBAON6:/Rm1syxacY48eda2TMpQdZ9nc+fyhNjG
Malware Config
Extracted
socks5systemz
51.159.66.125
217.23.6.51
151.80.38.159
217.23.9.168
37.187.122.227
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rc4_key
heyfg645fdhwi
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/3892-111-0x0000000000CC0000-0x0000000000D64000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Socks5systemz family
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Executes dropped EXE 3 IoCs
Processes:
is-GPESK.tmpIsoBuster_1121.exeIsoBuster_1121.exepid process 2380 is-GPESK.tmp 1352 IsoBuster_1121.exe 3892 IsoBuster_1121.exe -
Loads dropped DLL 1 IoCs
Processes:
is-GPESK.tmppid process 2380 is-GPESK.tmp -
Unexpected DNS network traffic destination 3 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 151.80.38.159 Destination IP 51.159.66.125 Destination IP 217.23.6.51 -
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 34 IoCs
Processes:
is-GPESK.tmpdescription ioc process File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-BPU1I.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-KLPTJ.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-2M3VL.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Plugins\is-1F3B7.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-L8F0R.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-9S31U.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Plugins\is-5N16H.tmp is-GPESK.tmp File opened for modification C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Online\is-4PB84.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\is-E9UH1.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-VQHVN.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\unins000.dat is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-IPPGD.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Online\is-8ALUE.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Help\is-E2G0Q.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Plugins\is-58UF2.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\is-ORSRS.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-T5PD5.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-4Q288.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-48PNG.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-FFHN8.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-VBHPG.tmp is-GPESK.tmp File opened for modification C:\Program Files (x86)\Smart Projects\IsoBuster\unins000.dat is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-H86V7.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-6HAPN.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-9AFHU.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-HN6OP.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-18LB2.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Plugins\is-9VJ5G.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-UTVDL.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-D8NP5.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-99OBM.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-8DI95.tmp is-GPESK.tmp File created C:\Program Files (x86)\Smart Projects\IsoBuster\Lang\is-L70NJ.tmp is-GPESK.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
net1.exe47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exeis-GPESK.tmpIsoBuster_1121.exenet.exeIsoBuster_1121.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language net1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language is-GPESK.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IsoBuster_1121.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language net.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IsoBuster_1121.exe -
Runs net.exe
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Suspicious use of WriteProcessMemory 15 IoCs
Processes:
47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exeis-GPESK.tmpnet.exedescription pid process target process PID 4604 wrote to memory of 2380 4604 47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe is-GPESK.tmp PID 4604 wrote to memory of 2380 4604 47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe is-GPESK.tmp PID 4604 wrote to memory of 2380 4604 47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe is-GPESK.tmp PID 2380 wrote to memory of 2760 2380 is-GPESK.tmp net.exe PID 2380 wrote to memory of 2760 2380 is-GPESK.tmp net.exe PID 2380 wrote to memory of 2760 2380 is-GPESK.tmp net.exe PID 2380 wrote to memory of 1352 2380 is-GPESK.tmp IsoBuster_1121.exe PID 2380 wrote to memory of 1352 2380 is-GPESK.tmp IsoBuster_1121.exe PID 2380 wrote to memory of 1352 2380 is-GPESK.tmp IsoBuster_1121.exe PID 2380 wrote to memory of 3892 2380 is-GPESK.tmp IsoBuster_1121.exe PID 2380 wrote to memory of 3892 2380 is-GPESK.tmp IsoBuster_1121.exe PID 2380 wrote to memory of 3892 2380 is-GPESK.tmp IsoBuster_1121.exe PID 2760 wrote to memory of 4624 2760 net.exe net1.exe PID 2760 wrote to memory of 4624 2760 net.exe net1.exe PID 2760 wrote to memory of 4624 2760 net.exe net1.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe"C:\Users\Admin\AppData\Local\Temp\47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4604 -
C:\Users\Admin\AppData\Local\Temp\is-ATU7H.tmp\is-GPESK.tmp"C:\Users\Admin\AppData\Local\Temp\is-ATU7H.tmp\is-GPESK.tmp" /SL4 $8015A "C:\Users\Admin\AppData\Local\Temp\47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe" 5597940 1418242⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380 -
C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 23⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 24⤵
- System Location Discovery: System Language Discovery
PID:4624
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C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe"C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1352
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C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe"C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3892
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.4MB
MD581bf17b6bc712eec07e481349afc3dbc
SHA1eedecca191d3a6b1f16483714343fe1019d7fc62
SHA25681baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b
SHA5123aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171
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Filesize
642KB
MD5e57693101a63b1f934f462bc7a2ef093
SHA12748ea8c66b980f14c9ce36c1c3061e690cf3ce7
SHA25671267ff94c9fc72cbffaeed3bc2f33cef1eeb1887c29c574d7f26595d1a6235f
SHA5123dcda686a85b19a9c7b4c96d132e90ed43c7df13ce9456beb2b88c278d8068cc3abcbfe25b1607c7b8281d276efb24809730f352927b326254f3208cbdf54a3e
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63