socks5systemz | 247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7d

General

Target

247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.exe
Size

3.5MB
MD5

f7a23c2db360978b5c952d476f0499a0
SHA1

7c67635adaa8d13e482b8346b3c018b559befa7d
SHA256

247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7d
SHA512

61ddb73032ca3a7de59f3c8f8533ced719e35f93a45beb4d2b506b8031214a593dd7da32a0e3adbc5b040b303ed84267411f2c720d3d3c16509a3c9b1f4c694b
SSDEEP

98304:NrTEh1NSuHXcBr1f5eALyxAaUgZ0sXMK31V:lgdHXc3/LyVUgZ0LK3P

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3620-75-0x0000000000AA0000-0x0000000000B42000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Socks5systemz family
socks5systemz

Executes dropped EXE 2 IoCs

pid	Process
1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp
3620	divxmedia3.exe

Loads dropped DLL 2 IoCs

pid	Process
1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp
3620	divxmedia3.exe

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 5 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	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	divxmedia3.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp
1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4080 wrote to memory of 1712	4080	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.exe	82
PID 4080 wrote to memory of 1712	4080	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.exe	82
PID 4080 wrote to memory of 1712	4080	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.exe	82
PID 1712 wrote to memory of 2276	1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp	83
PID 1712 wrote to memory of 2276	1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp	83
PID 1712 wrote to memory of 2276	1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp	83
PID 1712 wrote to memory of 3620	1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp	85
PID 1712 wrote to memory of 3620	1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp	85
PID 1712 wrote to memory of 3620	1712	247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp	85
PID 2276 wrote to memory of 5088	2276	net.exe	86
PID 2276 wrote to memory of 5088	2276	net.exe	86
PID 2276 wrote to memory of 5088	2276	net.exe	86

C:\Users\Admin\AppData\Local\Temp\247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.exe
"C:\Users\Admin\AppData\Local\Temp\247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4080
- C:\Users\Admin\AppData\Local\Temp\is-S7NVA.tmp\247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-S7NVA.tmp\247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp" /SL5="$8015A,3375183,54272,C:\Users\Admin\AppData\Local\Temp\247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.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:1712
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" pause divx_media_11303
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2276
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 pause divx_media_11303
      4⤵
      System Location Discovery: System Language Discovery
      PID:5088
- - C:\Users\Admin\AppData\Local\DivX Media Codec 2.4.7\divxmedia3.exe
    "C:\Users\Admin\AppData\Local\DivX Media Codec 2.4.7\divxmedia3.exe" -i
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:3620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\DivX Media Codec 2.4.7\divxmedia3.exe

Filesize
3.4MB

MD5
9991a0efcd9dcd2f0f8479ca28fb6a9b

SHA1
884cf5ee900e89a844d66d7ac7ef8948bc7ffede

SHA256
09dc6d04a4c2457fc6c240b3a94fee61854ad699cd4718efe8f18e18374e8b1e

SHA512
e7411896351d0ac29e644aa56ec15b32dabd9d966bb9dbe4024489adead0662f9d687d69a93187215218cc31f8a9ced92f09d427da5a2b47e0c652ac8a96c19c

Download Submit
C:\Users\Admin\AppData\Local\DivX Media Codec 2.4.7\sqlite3.dll

Filesize
630KB

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-OSG6G.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-S7NVA.tmp\247c553676181351efc357f16641102cf935550befff121536a8009ced9e9b7dN.tmp

Filesize
687KB

MD5
234e13ca0f2bcd56491423d106e042fa

SHA1
7097b1ae6798632d454ceb06742b29a7370df247

SHA256
8c4ed6e35793691ade6b7e29b6d955c0b4a8c7697b36ee7b0657bef98cd0747b

SHA512
867d9fe4011b6852ebcde81faed76a10a10c7dc66f5528159860fbc7044c8f1a3c1491f19c081bb2bb25b726d318b14d267d2afacc64e03ae658c25266bc09d0

Download Submit
memory/1712-48-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/1712-9-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/3620-50-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-81-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-47-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-43-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-97-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-93-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-89-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-52-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-53-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/3620-54-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-57-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-61-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-65-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-69-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-73-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-75-0x0000000000AA0000-0x0000000000B42000-memory.dmp

Filesize
648KB

Download
memory/3620-42-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/3620-85-0x0000000000400000-0x0000000000766000-memory.dmp

Filesize
3.4MB

Download
memory/4080-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4080-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4080-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download

Analysis

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