socks5systemz | feab12a05792166eaf80c66ee53b8a0dcb1e2a2250deb7ba44feaa2ca295c668

General

Target

b3384ca662e18f78d17c9ef62cf6222e.exe
Size

2.4MB
MD5

b3384ca662e18f78d17c9ef62cf6222e
SHA1

ad9537e1460b976af8d8849e3f4758b654428626
SHA256

feab12a05792166eaf80c66ee53b8a0dcb1e2a2250deb7ba44feaa2ca295c668
SHA512

01b233d57e256cd99a51ee2729c8dcdaf99376b109c386a91bf3ed3344fe54e6ee463789193c2252ba667f500b9ab728a3c7ed6194e3cb845730dca6873df3e5
SSDEEP

49152:C9H5RjhgtKNZsrhlXyJPT56DZ4qqUDk5brzMnbWIVigZwH58:MH5dk+UhEJPNcuqs1ryWzgw58

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://bovoqpk.com/search/?q=67e28dd8395dfb2f495fac1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a771ea771795af8e05c647db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923b6e8ef616c1ed9d

http://bovoqpk.com/search/?q=67e28dd8395dfb2f495fac1e7c27d78406abdd88be4b12eab517aa5c96bd86e99c8549885a8bbc896c58e713bc90c91936b5281fc235a925ed3e04d6bd974a95129070b614e96cc92be20ea778c255bbe258b90d3b4eed3233d1626a8ff811c9ef9c9d3acf67

Signatures

Detect Socks5Systemz Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2684-72-0x0000000002710000-0x00000000027B2000-memory.dmp	family_socks5systemz
behavioral1/memory/2684-75-0x0000000002710000-0x00000000027B2000-memory.dmp	family_socks5systemz
behavioral1/memory/2684-84-0x0000000002710000-0x00000000027B2000-memory.dmp	family_socks5systemz
behavioral1/memory/2684-97-0x0000000002710000-0x00000000027B2000-memory.dmp	family_socks5systemz
behavioral1/memory/2684-98-0x0000000002710000-0x00000000027B2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
3060	b3384ca662e18f78d17c9ef62cf6222e.tmp
1224	cdshrink.exe
2684	cdshrink.exe

Loads dropped DLL 5 IoCs

pid	Process
2184	b3384ca662e18f78d17c9ef62cf6222e.exe
3060	b3384ca662e18f78d17c9ef62cf6222e.tmp
3060	b3384ca662e18f78d17c9ef62cf6222e.tmp
3060	b3384ca662e18f78d17c9ef62cf6222e.tmp
3060	b3384ca662e18f78d17c9ef62cf6222e.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	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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3060	b3384ca662e18f78d17c9ef62cf6222e.tmp
3060	b3384ca662e18f78d17c9ef62cf6222e.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3060	b3384ca662e18f78d17c9ef62cf6222e.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 3060	2184	b3384ca662e18f78d17c9ef62cf6222e.exe	28
PID 2184 wrote to memory of 3060	2184	b3384ca662e18f78d17c9ef62cf6222e.exe	28
PID 2184 wrote to memory of 3060	2184	b3384ca662e18f78d17c9ef62cf6222e.exe	28
PID 2184 wrote to memory of 3060	2184	b3384ca662e18f78d17c9ef62cf6222e.exe	28
PID 2184 wrote to memory of 3060	2184	b3384ca662e18f78d17c9ef62cf6222e.exe	28
PID 2184 wrote to memory of 3060	2184	b3384ca662e18f78d17c9ef62cf6222e.exe	28
PID 2184 wrote to memory of 3060	2184	b3384ca662e18f78d17c9ef62cf6222e.exe	28
PID 3060 wrote to memory of 1224	3060	b3384ca662e18f78d17c9ef62cf6222e.tmp	29
PID 3060 wrote to memory of 1224	3060	b3384ca662e18f78d17c9ef62cf6222e.tmp	29
PID 3060 wrote to memory of 1224	3060	b3384ca662e18f78d17c9ef62cf6222e.tmp	29
PID 3060 wrote to memory of 1224	3060	b3384ca662e18f78d17c9ef62cf6222e.tmp	29
PID 3060 wrote to memory of 2684	3060	b3384ca662e18f78d17c9ef62cf6222e.tmp	30
PID 3060 wrote to memory of 2684	3060	b3384ca662e18f78d17c9ef62cf6222e.tmp	30
PID 3060 wrote to memory of 2684	3060	b3384ca662e18f78d17c9ef62cf6222e.tmp	30
PID 3060 wrote to memory of 2684	3060	b3384ca662e18f78d17c9ef62cf6222e.tmp	30

C:\Users\Admin\AppData\Local\Temp\b3384ca662e18f78d17c9ef62cf6222e.exe
"C:\Users\Admin\AppData\Local\Temp\b3384ca662e18f78d17c9ef62cf6222e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Users\Admin\AppData\Local\Temp\is-5LLND.tmp\b3384ca662e18f78d17c9ef62cf6222e.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-5LLND.tmp\b3384ca662e18f78d17c9ef62cf6222e.tmp" /SL5="$6014E,2150473,56832,C:\Users\Admin\AppData\Local\Temp\b3384ca662e18f78d17c9ef62cf6222e.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:3060
- - C:\Users\Admin\AppData\Local\CD Shrink\cdshrink.exe
    "C:\Users\Admin\AppData\Local\CD Shrink\cdshrink.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1224
- - C:\Users\Admin\AppData\Local\CD Shrink\cdshrink.exe
    "C:\Users\Admin\AppData\Local\CD Shrink\cdshrink.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\CD Shrink\cdshrink.exe

Filesize
2.9MB

MD5
650f0b4d12e528900a329af1c67e2d96

SHA1
7ea6653dc0c43cb8670965992794677fb2defc61

SHA256
1c60f2d12bc255cd4922a187da075c64218d1feb48be5818ead9f4fe6d04f518

SHA512
e6b53038ba5b359f57f2717da9d0b73485bdcdd08f8c038dd4b54adf520c5a5f42f202f91557cdec6ece0ab52cd0d9c8a9bd9a2f78a163d4a6608784e8c06e52

Download Submit
\Users\Admin\AppData\Local\Temp\is-5LLND.tmp\b3384ca662e18f78d17c9ef62cf6222e.tmp

Filesize
690KB

MD5
90bbb991a13b4a5b200cd7ba72e8ef86

SHA1
f6a4f88999c8030c87582accbd1cf319a368e76a

SHA256
056f830169d55ed6c3b246dc08a1383ea8223c778c1c7c6de5f265e6b476a15e

SHA512
5ac51e0a71a82d61d9c6066fc50339708985a7cd991033ffb7c5fbb7f6a4663c380b107ad514eb2f637d24b8ce3d16b35121c9af320432ccb0580d87cbb0d0f5

Download Submit
\Users\Admin\AppData\Local\Temp\is-K01R0.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-K01R0.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/1224-48-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/1224-43-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/1224-44-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/1224-45-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2184-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2184-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2684-60-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-74-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-105-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-102-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-54-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-98-0x0000000002710000-0x00000000027B2000-memory.dmp

Filesize
648KB

Download
memory/2684-97-0x0000000002710000-0x00000000027B2000-memory.dmp

Filesize
648KB

Download
memory/2684-59-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-96-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-63-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-66-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-69-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-72-0x0000000002710000-0x00000000027B2000-memory.dmp

Filesize
648KB

Download
memory/2684-51-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-75-0x0000000002710000-0x00000000027B2000-memory.dmp

Filesize
648KB

Download
memory/2684-80-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-83-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-84-0x0000000002710000-0x00000000027B2000-memory.dmp

Filesize
648KB

Download
memory/2684-87-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-90-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/2684-93-0x0000000000400000-0x00000000006E0000-memory.dmp

Filesize
2.9MB

Download
memory/3060-8-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/3060-56-0x00000000034E0000-0x00000000037C0000-memory.dmp

Filesize
2.9MB

Download
memory/3060-55-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/3060-53-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/3060-40-0x00000000034E0000-0x00000000037C0000-memory.dmp

Filesize
2.9MB

Download

Analysis

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