Analysis
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max time kernel
141s -
max time network
128s -
platform
windows11-21h2_x64 -
resource
win11-20240802-en -
resource tags
arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system -
submitted
03/08/2024, 15:41
Static task
static1
Behavioral task
behavioral1
Sample
a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral2
Sample
a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.exe
Resource
win11-20240802-en
General
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Target
a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.exe
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Size
4.0MB
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MD5
6e1e4b2fb343492aac9426d01f5df07b
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SHA1
20bad41b1d9cd24c629e97c86f4e6d4468d374e5
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SHA256
a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2
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SHA512
425b448fe13f3ae0f2b0627145e6c6ec5ad60cf0f1ff5cacef6a51d132cadf53f900a3a7136ad6b9aca991d693addc60e7fdd2f96b1ea647128d50ad61127047
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SSDEEP
98304:NSFRjS+znm6xkcn0xIoKieASiyrQMYffsTn0aqJm24OdU:4FRc6qZOPDtiwQv8rZ8qOW
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral2/memory/2400-77-0x00000000026A0000-0x0000000002742000-memory.dmp family_socks5systemz behavioral2/memory/2400-101-0x00000000026A0000-0x0000000002742000-memory.dmp family_socks5systemz behavioral2/memory/2400-102-0x00000000026A0000-0x0000000002742000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp 2092 jeengle32.exe 2400 jeengle32.exe -
Loads dropped DLL 1 IoCs
pid Process 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.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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System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language jeengle32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language jeengle32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 872 wrote to memory of 3904 872 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.exe 81 PID 872 wrote to memory of 3904 872 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.exe 81 PID 872 wrote to memory of 3904 872 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.exe 81 PID 3904 wrote to memory of 2092 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp 83 PID 3904 wrote to memory of 2092 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp 83 PID 3904 wrote to memory of 2092 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp 83 PID 3904 wrote to memory of 2400 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp 84 PID 3904 wrote to memory of 2400 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp 84 PID 3904 wrote to memory of 2400 3904 a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp 84
Processes
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C:\Users\Admin\AppData\Local\Temp\a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.exe"C:\Users\Admin\AppData\Local\Temp\a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:872 -
C:\Users\Admin\AppData\Local\Temp\is-JTMSE.tmp\a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp"C:\Users\Admin\AppData\Local\Temp\is-JTMSE.tmp\a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp" /SL5="$8005E,3922260,54272,C:\Users\Admin\AppData\Local\Temp\a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3904 -
C:\Users\Admin\AppData\Local\Jeengle\jeengle32.exe"C:\Users\Admin\AppData\Local\Jeengle\jeengle32.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2092
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C:\Users\Admin\AppData\Local\Jeengle\jeengle32.exe"C:\Users\Admin\AppData\Local\Jeengle\jeengle32.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2400
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.5MB
MD52261a563bfff6e976869811fb7a1cf14
SHA1454e427c9861fa8bfa2bf3609599134d7167207c
SHA256882fa0179b2c4881604d2102853ae30332a1d2880b020a1c3ed8ad13e9b88f22
SHA512eca49a363576f3aea481006f5cef57bf48d7652abc2bcf958ded77b2f60fca83cd7080064992240dfd3b9cfe1a7b74b0827e4a41942014ea918b55db472d733e
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-JTMSE.tmp\a1b8e777c790f1e1d041ce22d4c941046f90785a4ae25228e741e4bd433ba2a2.tmp
Filesize692KB
MD578800d81ba6ad634d25059847cfb1baa
SHA1022982bc0d006b40299bd553653970acb4718682
SHA25624a25380d33d0cf52686906e1272d13c3d467307ec7194e1186cab6f3aa3af69
SHA51283ffff319f2d910d001af4900098e8857dc9c4bd592e60b27ffdb0b49f9c8e1922ef61bfcdbebe9c1a37a7339a00ac98f05cba3d41f580513cb6971bcffd23a8