socks5systemz | c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676

General

Target

c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.exe
Size

5.0MB
MD5

e4474ec7d05c662a55764401a66e480b
SHA1

1daf732d394e3301b6048c4c5c0eae2d9b0d33b4
SHA256

c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676
SHA512

fa91393196b3fa44bb7b18562d016c54f3e7d5435d02cad5704c251b0b6c842508f42f85e9f476e6e70176eeee9ec80697daa3e310a035fc00f78f36d498ae27
SSDEEP

98304:Cdlpzv5q4P+BYzLzyXDEi7srL3Y04HOgZ+dIW8dxLBlyd9dUuE1bT5wCTAo0mRit:8pzg4sQOTV7srLIIgcszBgdguqJwSx0X

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/4256-88-0x0000000000AC0000-0x0000000000B62000-memory.dmp	family_socks5systemz
behavioral2/memory/4256-112-0x0000000000AC0000-0x0000000000B62000-memory.dmp	family_socks5systemz
behavioral2/memory/4256-111-0x0000000000AC0000-0x0000000000B62000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2096	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp
1664	vkfreeaudiosaver32_64.exe
4256	vkfreeaudiosaver32_64.exe

Loads dropped DLL 1 IoCs

pid	Process
2096	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2096	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 2096	5072	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.exe	80
PID 5072 wrote to memory of 2096	5072	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.exe	80
PID 5072 wrote to memory of 2096	5072	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.exe	80
PID 2096 wrote to memory of 1664	2096	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp	82
PID 2096 wrote to memory of 1664	2096	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp	82
PID 2096 wrote to memory of 1664	2096	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp	82
PID 2096 wrote to memory of 4256	2096	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp	83
PID 2096 wrote to memory of 4256	2096	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp	83
PID 2096 wrote to memory of 4256	2096	c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp	83

C:\Users\Admin\AppData\Local\Temp\c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.exe
"C:\Users\Admin\AppData\Local\Temp\c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Users\Admin\AppData\Local\Temp\is-EV19U.tmp\c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-EV19U.tmp\c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp" /SL5="$4021E,4996530,54272,C:\Users\Admin\AppData\Local\Temp\c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2096
- - C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe
    "C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1664
- - C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe
    "C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe" -s
    3⤵
    - Executes dropped EXE
    PID:4256

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 Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\is-A4I0P.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-EV19U.tmp\c1ddffb2a83ec3afb3959120e90dffe209af79930340eaa739c5c72c7fc8e676.tmp

Filesize
680KB

MD5
70295416713c0ce535665d806e3d54ac

SHA1
fe13c334ec67412f41fe190f93da7d45a57eccbd

SHA256
958c5f807a8268b09828e0f02a6c75a92f3a87dbd1853eb62e5996db990ba2ba

SHA512
2336597fb6ffe697ba62cd931479108556fee44319176989f961ae43aea62b111df6870a169202c6d960aface42779a2f82db48a69fe2072b711a512812f925c

Download Submit
C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe

Filesize
3.5MB

MD5
5038474a42d77c89a0c82fa0abbda2db

SHA1
6b1776e1dd15ce1119dd3774e0bed8bbfc9d8e07

SHA256
c5231ccd911948b895d3404b94a0830bbb7ed7a5fa5e97d753c059dabb0cf3f3

SHA512
2b7ef2c28e2fb3ba570972cf3c259d262f5258e333e385ba20574fb286f652391a5319d4aa71c918f6d7faf91df7febaf355b13f37e39804f9514b4b414d9c87

Download Submit
memory/1664-63-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1664-59-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1664-60-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1664-65-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2096-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2096-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4256-78-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-88-0x0000000000AC0000-0x0000000000B62000-memory.dmp

Filesize
648KB

Download
memory/4256-119-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-116-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-71-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-74-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-75-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-111-0x0000000000AC0000-0x0000000000B62000-memory.dmp

Filesize
648KB

Download
memory/4256-81-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-84-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-87-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-68-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-94-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-97-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-98-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-101-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-104-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-107-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-110-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4256-112-0x0000000000AC0000-0x0000000000B62000-memory.dmp

Filesize
648KB

Download
memory/5072-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5072-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/5072-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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