socks5systemz | ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a

General

Target

ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe
Size

1.8MB
MD5

433a1929419e3b80ed0ea666aa5d2706
SHA1

415c7b43c455fc91ab25a7fc4812e9ecb6cc4b65
SHA256

ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a
SHA512

bed84995c8b694d5a04914dfaf19eb09d6024646e71aab0e988ccd599600b0ba7a4bbbe72d75c475244af77c95ec5d79d7bd174a65f042c09c9ac8e79d943b21
SSDEEP

49152:32OJQI7/+NtzH4d0ZukosqI4oVw8j6KgKNB:mOJQIaNtzH4dMPPrw8OKJB

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://bvthpke.com/search/?q=67e28dd83f0bf1291606a9177c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f171ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a678af611c6e896

http://bvthpke.com/search/?q=67e28dd83f0bf1291606a9177c27d78406abdd88be4b12eab517aa5c96bd86e9938e45865a8bbc896c58e713bc90c91836b5281fc235a925ed3e52d6bd974a95129070b616e96cc92be20ea778c255bbe258b90d3b4eed3233d1626a8ff810c0eb9c9a3dca6c

Signatures

Detect Socks5Systemz Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2644-73-0x00000000025D0000-0x0000000002674000-memory.dmp	family_socks5systemz
behavioral1/memory/2644-76-0x00000000025D0000-0x0000000002674000-memory.dmp	family_socks5systemz
behavioral1/memory/2644-85-0x00000000025D0000-0x0000000002674000-memory.dmp	family_socks5systemz
behavioral1/memory/2644-98-0x00000000025D0000-0x0000000002674000-memory.dmp	family_socks5systemz
behavioral1/memory/2644-99-0x00000000025D0000-0x0000000002674000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp
2564	linatext.exe
2644	linatext.exe

Loads dropped DLL 5 IoCs

pid	Process
1664	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe
2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp
2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp
2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp
2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1664 wrote to memory of 2780	1664	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe	28
PID 1664 wrote to memory of 2780	1664	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe	28
PID 1664 wrote to memory of 2780	1664	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe	28
PID 1664 wrote to memory of 2780	1664	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe	28
PID 1664 wrote to memory of 2780	1664	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe	28
PID 1664 wrote to memory of 2780	1664	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe	28
PID 1664 wrote to memory of 2780	1664	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe	28
PID 2780 wrote to memory of 2564	2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	29
PID 2780 wrote to memory of 2564	2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	29
PID 2780 wrote to memory of 2564	2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	29
PID 2780 wrote to memory of 2564	2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	29
PID 2780 wrote to memory of 2644	2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	30
PID 2780 wrote to memory of 2644	2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	30
PID 2780 wrote to memory of 2644	2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	30
PID 2780 wrote to memory of 2644	2780	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	30

C:\Users\Admin\AppData\Local\Temp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe
"C:\Users\Admin\AppData\Local\Temp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1664
- C:\Users\Admin\AppData\Local\Temp\is-D6DKK.tmp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-D6DKK.tmp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp" /SL5="$30130,1478197,54272,C:\Users\Admin\AppData\Local\Temp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2780
- - C:\Users\Admin\AppData\Local\Lina Text\linatext.exe
    "C:\Users\Admin\AppData\Local\Lina Text\linatext.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2564
- - C:\Users\Admin\AppData\Local\Lina Text\linatext.exe
    "C:\Users\Admin\AppData\Local\Lina Text\linatext.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2644

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

\Users\Admin\AppData\Local\Lina Text\linatext.exe

Filesize
1.7MB

MD5
cd0a90f8fcbd95b8488ef91307fc3a0e

SHA1
ac77ba866c1bd5adbc075d3d1427628f33dc1eb2

SHA256
79e191e63850b75785d959c9f67c858c820654bfb2371c9b85891608e08b4044

SHA512
53fee9c053dc3c270ba6f8a88712e82133ff608d8bd685a41f8950fc48873e3b2eec63c15c5265ecb55fac61c9cf4e5c0e2b41c76632cc0ead546712e92cd84f

Download Submit
\Users\Admin\AppData\Local\Temp\is-BITS8.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-BITS8.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-D6DKK.tmp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp

Filesize
677KB

MD5
33da9dc521f467c0405d3ef5377ce04b

SHA1
5249d7ce5dfabe5ee6d2fc7d3f3eba1e866b7d1f

SHA256
dbab8a7b2b45fc7001d5e34d3d45ccbe93a7591f12910281acf2c32f8c4e631c

SHA512
a3093637e1d731eab58080e10706db1afbf6e79fbac6593733b61033f97875ecbe230311e9741d349625ec3a66a6435318846d35290db8cd00af76d692699a55

Download Submit
memory/1664-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1664-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2564-49-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2564-44-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2564-45-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2564-46-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-61-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-75-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-53-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-106-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-103-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-56-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-99-0x00000000025D0000-0x0000000002674000-memory.dmp

Filesize
656KB

Download
memory/2644-60-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-98-0x00000000025D0000-0x0000000002674000-memory.dmp

Filesize
656KB

Download
memory/2644-64-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-67-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-70-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-73-0x00000000025D0000-0x0000000002674000-memory.dmp

Filesize
656KB

Download
memory/2644-51-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-76-0x00000000025D0000-0x0000000002674000-memory.dmp

Filesize
656KB

Download
memory/2644-81-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-84-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-85-0x00000000025D0000-0x0000000002674000-memory.dmp

Filesize
656KB

Download
memory/2644-88-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-91-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-94-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2644-97-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2780-12-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2780-57-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2780-55-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2780-43-0x0000000003500000-0x00000000036AA000-memory.dmp

Filesize
1.7MB

Download

Analysis

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