socks5systemz | 47a3a02bf52254b5776960a68c2f17aa773cb66072843638b19cb582e6ef8409

General

Target

file.exe
Size

5.7MB
MD5

a77b03795fd546e1ce17a89770416e0a
SHA1

6473da89e95a6750dfec775ec1805ec025b62ab5
SHA256

47a3a02bf52254b5776960a68c2f17aa773cb66072843638b19cb582e6ef8409
SHA512

b9ed6b713e84f78340ea76af9da0a987caa3cd67e58c071ff9f0c79d84e96996a37a3f6437a70eadedf6674e3e9f3d99a21eda71f5607f9dd833c3d937b480aa
SSDEEP

98304:PX41O2pXtg27SK59Ej2oVmV1J7bXc012r+z0nP7qT6D07uyazx11:viXu2159Ej2oUVf4r+AnP2TeyaR

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2852-92-0x0000000002A90000-0x0000000002B32000-memory.dmp	family_socks5systemz
behavioral1/memory/2852-116-0x0000000002A90000-0x0000000002B32000-memory.dmp	family_socks5systemz
behavioral1/memory/2852-115-0x0000000002A90000-0x0000000002B32000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Socks5systemz family
socks5systemz
Executes dropped EXE 2 IoCs

Processes:

file.tmpavidenta.exe

pid process

376 file.tmp
2852 avidenta.exe
Loads dropped DLL 3 IoCs

Processes:

file.exefile.tmp

pid process

1672 file.exe
376 file.tmp
376 file.tmp
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

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.
discovery

Query Registry
T1012

pid	process
376	file.tmp
2852	avidenta.exe

pid	process
1672	file.exe
376	file.tmp
376	file.tmp

description	ioc
Destination IP	141.98.234.31

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

Processes:

file.exefile.tmpnet.exeavidenta.exenet1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	avidenta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe

Runs net.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

file.tmp

pid process

376 file.tmp
376 file.tmp
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

file.tmp

pid process

376 file.tmp

pid	process
376	file.tmp
376	file.tmp

pid	process
376	file.tmp

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

file.exefile.tmpnet.exe

description	pid	process	target process
PID 1672 wrote to memory of 376	1672	file.exe	file.tmp
PID 1672 wrote to memory of 376	1672	file.exe	file.tmp
PID 1672 wrote to memory of 376	1672	file.exe	file.tmp
PID 1672 wrote to memory of 376	1672	file.exe	file.tmp
PID 1672 wrote to memory of 376	1672	file.exe	file.tmp
PID 1672 wrote to memory of 376	1672	file.exe	file.tmp
PID 1672 wrote to memory of 376	1672	file.exe	file.tmp
PID 376 wrote to memory of 2676	376	file.tmp	net.exe
PID 376 wrote to memory of 2676	376	file.tmp	net.exe
PID 376 wrote to memory of 2676	376	file.tmp	net.exe
PID 376 wrote to memory of 2676	376	file.tmp	net.exe
PID 376 wrote to memory of 2852	376	file.tmp	avidenta.exe
PID 376 wrote to memory of 2852	376	file.tmp	avidenta.exe
PID 376 wrote to memory of 2852	376	file.tmp	avidenta.exe
PID 376 wrote to memory of 2852	376	file.tmp	avidenta.exe
PID 2676 wrote to memory of 1916	2676	net.exe	net1.exe
PID 2676 wrote to memory of 1916	2676	net.exe	net1.exe
PID 2676 wrote to memory of 1916	2676	net.exe	net1.exe
PID 2676 wrote to memory of 1916	2676	net.exe	net1.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Users\Admin\AppData\Local\Temp\is-0JCPF.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-0JCPF.tmp\file.tmp" /SL5="$70218,5263804,721408,C:\Users\Admin\AppData\Local\Temp\file.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:376
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" pause avidenta_11131
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2676
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 pause avidenta_11131
      4⤵
      System Location Discovery: System Language Discovery
      PID:1916
- - C:\Users\Admin\AppData\Local\Avidenta 2.7.7\avidenta.exe
    "C:\Users\Admin\AppData\Local\Avidenta 2.7.7\avidenta.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2852

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

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Downloads

\Users\Admin\AppData\Local\Avidenta 2.7.7\avidenta.exe

Filesize
3.5MB

MD5
19f9733dcd58aff930f87acdaf4a09fb

SHA1
4076eabd809ca63ab6619a9d85c8f5d686f89728

SHA256
ef9c847985c1588a5d5f85ecafdace935d98c10ac9411e5c7040a7900a95fc43

SHA512
92bfc472ef3a965f6993163aa32e14273de23061bed77125bd6d165a42fe39c83e2e07d33b86ad68f9893a0c347cac7f063e667440422cc2e94ea45750adeca8

Download Submit
\Users\Admin\AppData\Local\Temp\is-0JCPF.tmp\file.tmp

Filesize
2.4MB

MD5
438f4076e92d3c839405bab4652fe2ce

SHA1
046567cf90b9e87f4b3913030e1acfc0a4341279

SHA256
ad1772bd4f07c11a626de2f257d2cc44b63ff9150be9386512840a2381e97b7e

SHA512
44985fe1773cc9d1a4ee5ed0e5bcac058c0cd064d3a1e782d9c424efeb89185528e19a177ecfafa173b76b049301d5ff95dafc0b36715a0847eec3f6b4e1506b

Download Submit
\Users\Admin\AppData\Local\Temp\is-JQ9R9.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/376-10-0x0000000000400000-0x0000000000679000-memory.dmp

Filesize
2.5MB

Download
memory/376-102-0x0000000005A10000-0x0000000005D9D000-memory.dmp

Filesize
3.6MB

Download
memory/376-67-0x0000000005A10000-0x0000000005D9D000-memory.dmp

Filesize
3.6MB

Download
memory/376-73-0x0000000000400000-0x0000000000679000-memory.dmp

Filesize
2.5MB

Download
memory/1672-74-0x0000000000400000-0x00000000004BE000-memory.dmp

Filesize
760KB

Download
memory/1672-2-0x0000000000401000-0x00000000004A9000-memory.dmp

Filesize
672KB

Download
memory/1672-0-0x0000000000400000-0x00000000004BE000-memory.dmp

Filesize
760KB

Download
memory/2852-85-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-69-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-79-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-82-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-70-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-88-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-91-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-92-0x0000000002A90000-0x0000000002B32000-memory.dmp

Filesize
648KB

Download
memory/2852-98-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-76-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-101-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-105-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-108-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-111-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-114-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-116-0x0000000002A90000-0x0000000002B32000-memory.dmp

Filesize
648KB

Download
memory/2852-115-0x0000000002A90000-0x0000000002B32000-memory.dmp

Filesize
648KB

Download
memory/2852-120-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download
memory/2852-123-0x0000000000400000-0x000000000078D000-memory.dmp

Filesize
3.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads