socks5systemz | 7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900

Analysis

max time kernel
142s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
10/08/2024, 16:09

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General

Target
7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.exe
Size 4.4MB
Sample240810-tl2y8a1cpb
SHA256 7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900
MD5 0e1de299d2e576fa5c6ee797c62f8ef0
SHA1 b30ae770b3bf59b7c2809b91c2bb0d64c90a2aa7
SHA512 9cd2ab1adbb358427e95b64343201ea419d7fcf96df8d3bf6f538228a732ee8f33dde9048403988a96c94874abccccc6fbd2c4f3fd842d241914cffb0c959056
SSDEEP 98304:N/TlT0PgNtTuj34XNy5hL9eN/qAWTeQcZawlbNwdZ:dlT0YL834khoqhTakwleP
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1048-83-0x0000000000AD0000-0x0000000000B72000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz

Executes dropped EXE 3 IoCs

pid	Process
3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp
2088	avicodec32.exe
1048	avicodec32.exe

Loads dropped DLL 3 IoCs

pid	Process
3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp
3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp
3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.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	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.
discovery

Query Registry
T1012

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	avicodec32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	avicodec32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp
3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4316 wrote to memory of 3996	4316	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.exe	85
PID 4316 wrote to memory of 3996	4316	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.exe	85
PID 4316 wrote to memory of 3996	4316	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.exe	85
PID 3996 wrote to memory of 2088	3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp	88
PID 3996 wrote to memory of 2088	3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp	88
PID 3996 wrote to memory of 2088	3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp	88
PID 3996 wrote to memory of 1048	3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp	89
PID 3996 wrote to memory of 1048	3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp	89
PID 3996 wrote to memory of 1048	3996	7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp	89

C:\Users\Admin\AppData\Local\Temp\7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.exe
"C:\Users\Admin\AppData\Local\Temp\7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4316
- C:\Users\Admin\AppData\Local\Temp\is-IP59E.tmp\7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-IP59E.tmp\7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp" /SL5="$902C2,4384855,54272,C:\Users\Admin\AppData\Local\Temp\7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.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:3996
- - C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe
    "C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2088
- - C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe
    "C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe" -s
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

avicodec32.exe

Path C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe
Size 4.3MB
SHA256 77bbd0ad63f64ce738f96e6a103b2b901e12890ce1ca9ce8552316e31edaeb57
MD5 47df7ab2398a3f805c82584f7238fed9
SHA1 071d41b499b00245f65ca1e4578ccd31a183a45e
SHA512 0a0b989c07f4011a26495f57242b815fcb64b4293f4362189907338426d87c24b6b8554b99c3f062dae8efb2ca5202fca8a2b666f76634fbb06accd173654010
SSDEEP 49152:Y26iRm26iT4A26if26iDK26iMM26iIwl26iqx26iigcaP0AVaWGVxsIaeobjmMks:5iufG3TaP0h9/HaeobjmfSTgECOOpu
MD5 SHA1 SHA512 SSDEEP

Submit Download

7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-IP59E.tmp\7a773e91c9d42009c4058e4f52c9ffbc138c74a64a27fbb5c05b7600cdfc9900.tmp
Size 692KB
SHA256 7fee7eb7f03ef1c7bf594344f206457c477975efeedb2e244b4cdc5d2c9365dd
MD5 eaa7a9c561bbd459afcd2892d7b7baf6
SHA1 b40c1ffbc0a0c458651dab72935cc9623603be2b
SHA512 67c45e6cac674945d54ef614d573f14df8d07de10931a97e1c2d1e1b2b9bbb3fb029c608214370f400243a3093e0b114e1d53d09df7c18ad9fca3453ba149aa5
SSDEEP 12288:thu7eEcdCP8trP837szHUA6JCzS9Ntc3l3ER6orNjURHFDExyF:Pu7eEYCP8trP837szHUA60SLtcV3E9+T
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-UK5KE.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

_isdecmp.dll

Path C:\Users\Admin\AppData\Local\Temp\is-UK5KE.tmp\_isetup\_isdecmp.dll
Size 13KB
SHA256 e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
MD5 a813d18268affd4763dde940246dc7e5
SHA1 c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA512 b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
SSDEEP 384:BXvhMwoSitz/bjx7yxnbdn+EHvbsHoOODCg:BZ7FEAbd+EDsIO
MD5 SHA1 SHA512 SSDEEP

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memory/1048-93-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-90-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-112-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-109-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-105-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-64-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-102-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-99-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-96-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-68-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-71-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-74-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-77-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-80-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/1048-83-0x0000000000AD0000-0x0000000000B72000-memory.dmp

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memory/1048-85-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/2088-58-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/2088-61-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/2088-60-0x0000000000400000-0x0000000000847000-memory.dmp

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memory/3996-19-0x0000000000400000-0x00000000004BD000-memory.dmp

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memory/3996-67-0x0000000000400000-0x00000000004BD000-memory.dmp

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memory/4316-0-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4316-66-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4316-2-0x0000000000401000-0x000000000040B000-memory.dmp

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