Analysis
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max time kernel
292s -
max time network
292s -
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 22:47
Static task
static1
Behavioral task
behavioral1
Sample
3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe
Resource
win10-20240404-en
General
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Target
3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe
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Size
5.4MB
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MD5
3096abab9f77f9a27074ab83e4708c19
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SHA1
1d871bfcef5a09934edd76b68232a32e33b1b4af
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SHA256
3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539
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SHA512
78a38f3253c6066e3b77716d338e50bb2aad73bb800e915683b816b672710b6998c346d15e1e2041bfdd56c0c28407ad2583ed1bf62a17d796492a5dbfcc9953
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SSDEEP
98304:mlEuY2+murXnhkOrQ2stNwxpaqufUaGYMbSqm9bzsZdH5E7xngm4Y:09QnhQHwp3KUXbS/7tgm4Y
Malware Config
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2468-89-0x0000000000970000-0x0000000000A12000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmpfiaudioconverter.exefiaudioconverter.exepid process 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp 1840 fiaudioconverter.exe 2468 fiaudioconverter.exe -
Loads dropped DLL 3 IoCs
Processes:
3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmppid process 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.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 45.155.250.90 Destination IP 91.211.247.248 -
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:
3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmppid process 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmpdescription pid process target process PID 204 wrote to memory of 4448 204 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp PID 204 wrote to memory of 4448 204 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp PID 204 wrote to memory of 4448 204 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp PID 4448 wrote to memory of 1840 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp fiaudioconverter.exe PID 4448 wrote to memory of 1840 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp fiaudioconverter.exe PID 4448 wrote to memory of 1840 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp fiaudioconverter.exe PID 4448 wrote to memory of 2468 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp fiaudioconverter.exe PID 4448 wrote to memory of 2468 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp fiaudioconverter.exe PID 4448 wrote to memory of 2468 4448 3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp fiaudioconverter.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe"C:\Users\Admin\AppData\Local\Temp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:204 -
C:\Users\Admin\AppData\Local\Temp\is-AVUCJ.tmp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp"C:\Users\Admin\AppData\Local\Temp\is-AVUCJ.tmp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp" /SL5="$5022A,5417366,54272,C:\Users\Admin\AppData\Local\Temp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4448 -
C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe"C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe" -i3⤵
- Executes dropped EXE
PID:1840
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C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe"C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe" -s3⤵
- Executes dropped EXE
PID:2468
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.8MB
MD58324cdab3e68429f86f378d81e6f3913
SHA1e60cfc494a09b280fde9d23ee4ffee68aaacd695
SHA2562d356ffacb01af22cc06e089702c9404dc3811eca6d7526d06940ae301e6c9e1
SHA5124f143c2e463b3bf473d8b254ac757aec13b9f444cfea5537594ce0283880712ff3895110538b7faa8a761d71bcd0e3e8da48b89d03311a5e06809ad28357affb
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C:\Users\Admin\AppData\Local\Temp\is-AVUCJ.tmp\3b787f3b4d8f0ed0b4739faae0a24307a54e0d01abf70d84d21a658423f9b539.tmp
Filesize680KB
MD5791348257179b7a0bd2a513fc9b19618
SHA1783834fa3c937de3d5cefc1e72cfd0cc63c657fc
SHA2565cdf04dee7d14c9c6d768d5c3092979f3be25f5148ef39051dee584a662c921c
SHA5128e68ed3e98f5066e5aa61e30fbe24ab500274e7994d74e8b167f5cd2b1512dde8a5c89cb5a8eedd4ae67b1414c08b312c999e79008d9e7c0255cb0c1a323ab63
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
13KB
MD5a813d18268affd4763dde940246dc7e5
SHA1c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4