socks5systemz | 62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b

Analysis

max time kernel
149s
max time network
134s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
04/08/2024, 22:21

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General

Target
62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe
Size 4.0MB
Sample240804-19qdnascrf
SHA256 62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b
MD5 b9ad924d7058028b6cc7d7f2f3d82c9d
SHA1 992b5f47731ae8e818b161a7aafe1e01215d26f9
SHA512 a3f6bafcaf04a616945d81e30dbaa0f98bf62f60ce11458f5d150f2dd4144d4ab949a5823b9e3b4b904de560d280375ad1ec55a481c48e25e8687cc680bd2934
SSDEEP 98304:NJeR8HaQjrVOf1rDIhrFOczz2lhHewHQ7hF6OdGgCd4:LHasZOfBYro/63LCW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2884-87-0x0000000002730000-0x00000000027D2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp
2364	ac3filter32.exe
2884	ac3filter32.exe

Loads dropped DLL 6 IoCs

pid	Process
3068	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe
1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp
1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp
1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp
1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp
1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.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	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ac3filter32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ac3filter32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp
1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 1276	3068	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe	30
PID 3068 wrote to memory of 1276	3068	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe	30
PID 3068 wrote to memory of 1276	3068	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe	30
PID 3068 wrote to memory of 1276	3068	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe	30
PID 3068 wrote to memory of 1276	3068	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe	30
PID 3068 wrote to memory of 1276	3068	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe	30
PID 3068 wrote to memory of 1276	3068	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe	30
PID 1276 wrote to memory of 2364	1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp	31
PID 1276 wrote to memory of 2364	1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp	31
PID 1276 wrote to memory of 2364	1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp	31
PID 1276 wrote to memory of 2364	1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp	31
PID 1276 wrote to memory of 2884	1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp	32
PID 1276 wrote to memory of 2884	1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp	32
PID 1276 wrote to memory of 2884	1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp	32
PID 1276 wrote to memory of 2884	1276	62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp	32

C:\Users\Admin\AppData\Local\Temp\62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe
"C:\Users\Admin\AppData\Local\Temp\62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3068
- C:\Users\Admin\AppData\Local\Temp\is-G3899.tmp\62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-G3899.tmp\62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp" /SL5="$400F4,3878024,54272,C:\Users\Admin\AppData\Local\Temp\62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.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:1276
- - C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32.exe
    "C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2364
- - C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32.exe
    "C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32.exe" -s
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2884

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

ac3filter32.exe

Path \Users\Admin\AppData\Local\AC3Filter\ac3filter32.exe
Size 4.3MB
SHA256 c8e4926d964e1e8b6e6e5cdd41ef88c91a6f03300673b5f6bc69ade364350f08
MD5 fea288cb7a11f8b6191e046bc1af6a6e
SHA1 a6e5a391ea978e407c3bf2445f1aa24513483363
SHA512 5201bbfe1cb832b42246b7b68060ee8b7c6776baaa6756546cb5ecbc62d7172a29838954da43358fc9c811981b09aae39c9969bd7bbf4a689574662839413940
SSDEEP 24576:toaKRin7S/WiAWjPAhY8Yr23FQ3/i+NXNedkR9/avWDkIkb8a6y8Mza+1bZuNJRh:aROOdtrQF+VDGObee6RGwFXzbg6Aj5
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-7J2V5.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-7J2V5.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

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62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp

Path \Users\Admin\AppData\Local\Temp\is-G3899.tmp\62b6b1daa96ac5d8175047de99f0c2a871e9c42cee23d4b1d996924f1e1de75b.tmp
Size 692KB
SHA256 dca15a70be4ddce976a38be4a643336de4a55a4156c33726da14d1108393171f
MD5 5ebe11e6392fab730e54dcb5c25aa498
SHA1 77d0199f1952ba98dc140c568ed0961dec98e77a
SHA512 0d81221530d7fa78a59abcb43784f1be39102da72d320ce97c6f56416d5f41bcf902f7bb2df93278d51125caaf6336cf8bd2dbfd9cdf9cb973e4d13c148d82e4
SSDEEP 12288:thu7eEcdCP8trP837szHUA6JCzS9Ntc3l3ER6orNjURAFDExyF:Pu7eEYCP8trP837szHUA60SLtcV3E9hT
MD5 SHA1 SHA512 SSDEEP

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memory/1276-67-0x0000000000400000-0x00000000004BD000-memory.dmp

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memory/1276-75-0x0000000006AD0000-0x0000000006F26000-memory.dmp

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memory/1276-18-0x0000000000400000-0x00000000004BD000-memory.dmp

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memory/1276-56-0x0000000006AD0000-0x0000000006F26000-memory.dmp

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memory/1276-71-0x0000000006AD0000-0x0000000006F26000-memory.dmp

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memory/2364-57-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2364-61-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2364-58-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-70-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-100-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-114-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-64-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-74-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-113-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-76-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-81-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-84-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-86-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-87-0x0000000002730000-0x00000000027D2000-memory.dmp

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memory/2884-92-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-97-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-109-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-101-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/2884-104-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/3068-66-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/3068-0-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/3068-3-0x0000000000401000-0x000000000040B000-memory.dmp

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