Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
25/03/2024, 01:01
Static task
static1
Behavioral task
behavioral1
Sample
41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe
Resource
win10v2004-20240226-en
General
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Target
41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe
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Size
2.0MB
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MD5
0574b31aca7165d0a8ba6ed16e0c8224
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SHA1
6b242787348a0d296d3aed84fea8c4884b863916
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SHA256
41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60
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SHA512
c1e07b9230f35b9b0adbec1a56b55dadba522d100bc5b22ec34ab286fdc2c705b49dc248e65a8dc67f6ae30ef0eeaf5b5116feb547f504a1e77719f20420baa6
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SSDEEP
24576:320DPMIe3Ahdm7Gsfdqa1zNSwld+snicYeVCeHZE+yScddwF/+4SSHNGkJR/YaLG:32MMhQh87/1RbticF7BSI7N+O98
Malware Config
Extracted
socks5systemz
http://bxdbmob.com/search/?q=67e28dd86c09f220490efa1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ae8889b5e4fa9281ae978fe71ea771795af8e05c642db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe12c2e7909e39
Signatures
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Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral2/memory/4476-70-0x00000000007E0000-0x0000000000882000-memory.dmp family_socks5systemz behavioral2/memory/4476-74-0x00000000007E0000-0x0000000000882000-memory.dmp family_socks5systemz behavioral2/memory/4476-83-0x00000000007E0000-0x0000000000882000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 1964 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp 212 markdownpad32.exe 4476 markdownpad32.exe -
Loads dropped DLL 3 IoCs
pid Process 1964 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp 1964 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp 1964 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description ioc Destination IP 141.98.234.31 -
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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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 4064 wrote to memory of 1964 4064 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe 90 PID 4064 wrote to memory of 1964 4064 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe 90 PID 4064 wrote to memory of 1964 4064 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe 90 PID 1964 wrote to memory of 212 1964 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp 91 PID 1964 wrote to memory of 212 1964 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp 91 PID 1964 wrote to memory of 212 1964 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp 91 PID 1964 wrote to memory of 4476 1964 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp 94 PID 1964 wrote to memory of 4476 1964 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp 94 PID 1964 wrote to memory of 4476 1964 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp 94
Processes
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C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe"C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4064 -
C:\Users\Admin\AppData\Local\Temp\is-8K0T7.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp"C:\Users\Admin\AppData\Local\Temp\is-8K0T7.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp" /SL5="$401CC,1711334,54272,C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1964 -
C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i3⤵
- Executes dropped EXE
PID:212
-
-
C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s3⤵
- Executes dropped EXE
PID:4476
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.8MB
MD58ade5b51df65ef913b39092d7c4d72a9
SHA174437251d55eca86819232a1e221b4a8495263e8
SHA25675127b731d22745d3fd9335f9e8e589440e6a3ea4ce325252fc45154cf74a000
SHA512436517193959dd01b678b8feed889f6d557551f2d67368f1f81e040bf67bb7a46d7c750d3cac942566c14b812bf59267d889481c3f0b1081dfeb6dbed2d0e149
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Filesize
896KB
MD57906d20d4bb910e4b6bd5bf180a9c7d7
SHA16df5e9b6319a3f3e93f89901a8f3eca64151a598
SHA256f2025864c0354c23db2e490a7838505c60395290e9ea8b7ba489734da8166426
SHA51249a64c4c9ca8944fc192550c236298520b401ad53d33cbe28e5f4aaccf2610665b5a458c1faca5cbff476bf709b1cddea9a2d3becdf187e8f29afa9ce751164b
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
32KB
MD5b6f11a0ab7715f570f45900a1fe84732
SHA177b1201e535445af5ea94c1b03c0a1c34d67a77b
SHA256e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67
SHA51278a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771
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C:\Users\Admin\AppData\Local\Temp\is-8K0T7.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp
Filesize677KB
MD588d7ea648defbc2597fa38ef83112eda
SHA12bce9acfb1b5e08dc29c695eff12fc80949c6440
SHA2565a53b8bd78b1bbf24136b4d8d8191f503abcc24934626ed6f15bf9f6dee17b68
SHA512050ce971e1f7a4e92d272c9c3c9f96f1214286523b018a75084c76dbebb5f32a717afbd9af9c68b7ad71f738c0a331640a8fe765cb4def90678eae4769b2e66a