Analysis
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max time kernel
293s -
max time network
299s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
30-05-2024 22:49
Static task
static1
Behavioral task
behavioral1
Sample
40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe
Resource
win10-20240404-en
General
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Target
40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe
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Size
6.0MB
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MD5
d51bf7907c0524801ea06ff93f3adf2f
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SHA1
43ce065024351f6ebff5e476e11979decdc62d17
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SHA256
40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28
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SHA512
f1893c0b085b76bc9c6ea5b29042f39aa0f878d3efba5ee128d3f04fd683027db986b0080c8acd2335ec503697f59ec478c31ee782ec741a42e248bfe5233343
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SSDEEP
98304:mjbNPKmBrFIq1gFUCY68/tXeUlGhneBy8TcaxmX+wy1bht9OoKhQbLvUw6sDb:INPrVFItFUCetXeUQZ8TKydhfOmYO
Malware Config
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/3084-89-0x0000000000910000-0x00000000009B2000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmpringtonemakerfe.exeringtonemakerfe.exepid process 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp 4984 ringtonemakerfe.exe 3084 ringtonemakerfe.exe -
Loads dropped DLL 3 IoCs
Processes:
40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmppid process 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp -
Unexpected DNS network traffic destination 2 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 152.89.198.214 Destination IP 45.155.250.90 -
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 FindShellTrayWindow 1 IoCs
Processes:
40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmppid process 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmpdescription pid process target process PID 2164 wrote to memory of 3788 2164 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp PID 2164 wrote to memory of 3788 2164 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp PID 2164 wrote to memory of 3788 2164 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp PID 3788 wrote to memory of 4984 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp ringtonemakerfe.exe PID 3788 wrote to memory of 4984 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp ringtonemakerfe.exe PID 3788 wrote to memory of 4984 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp ringtonemakerfe.exe PID 3788 wrote to memory of 3084 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp ringtonemakerfe.exe PID 3788 wrote to memory of 3084 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp ringtonemakerfe.exe PID 3788 wrote to memory of 3084 3788 40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp ringtonemakerfe.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe"C:\Users\Admin\AppData\Local\Temp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2164 -
C:\Users\Admin\AppData\Local\Temp\is-VCC5U.tmp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp"C:\Users\Admin\AppData\Local\Temp\is-VCC5U.tmp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp" /SL5="$7020E,6048102,54272,C:\Users\Admin\AppData\Local\Temp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3788 -
C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe"C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe" -i3⤵
- Executes dropped EXE
PID:4984
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C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe"C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe" -s3⤵
- Executes dropped EXE
PID:3084
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.5MB
MD50f76373df067ec3b2460bc51e1c4b57d
SHA1769bc763f1ffd1fa279e41e7a0eee0050f4906c2
SHA256e15f1aeb2534cadd8927037a0bd4c9c493f3f0ceb026510a802207173d6a65ca
SHA512c3a26ee06ab32a41c7342c84325dcc78535efc94b521298cefc3db91205e7a45ba28049e81017f78ee235169ba4bb3c1c003c64b532e3aad846b19d8b7e92b7b
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C:\Users\Admin\AppData\Local\Temp\is-VCC5U.tmp\40fcbfc98e137901fd2aaf6ef8acd96c8c5e3cb91eebcfa64a927a6d78f8ac28.tmp
Filesize680KB
MD5b7289eddee858433e99222c056f54576
SHA14d972cde373fcf8df259be1b5fcafe44357ea64b
SHA2562bb15c78f05c5000fab1bded860ca7c0059345c5d29fd542210172cada980478
SHA51238eb10b404204958e1dc593118ef186feb647309d84f6396d533818b725ab434173101bc29f11b076ef5c23e406209be8c2be968cc20d7922ae9588b2b9ce22a
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
13KB
MD5a813d18268affd4763dde940246dc7e5
SHA1c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4