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://eroardo.ua/search/?q=67e28dd83d5cf57a4406a9177c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f571ea771795af8e05c645db22f31df92d8838ed12a666d307eca743ec4c2b07b52966923a678af611c7ef9d

Signatures

Detect Socks5Systemz Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2752-70-0x0000000000800000-0x00000000008A4000-memory.dmp	family_socks5systemz
behavioral2/memory/2752-81-0x0000000000800000-0x00000000008A4000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
5020	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp
2208	linatext.exe
2752	linatext.exe

Loads dropped DLL 1 IoCs

pid	Process
5020	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	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 WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 672 wrote to memory of 5020	672	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe	89
PID 672 wrote to memory of 5020	672	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe	89
PID 672 wrote to memory of 5020	672	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe	89
PID 5020 wrote to memory of 2208	5020	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	91
PID 5020 wrote to memory of 2208	5020	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	91
PID 5020 wrote to memory of 2208	5020	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	91
PID 5020 wrote to memory of 2752	5020	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	92
PID 5020 wrote to memory of 2752	5020	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	92
PID 5020 wrote to memory of 2752	5020	ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp	92

C:\Users\Admin\AppData\Local\Temp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe
"C:\Users\Admin\AppData\Local\Temp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:672
- C:\Users\Admin\AppData\Local\Temp\is-7KUVB.tmp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-7KUVB.tmp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp" /SL5="$100050,1478197,54272,C:\Users\Admin\AppData\Local\Temp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:5020
- - C:\Users\Admin\AppData\Local\Lina Text\linatext.exe
    "C:\Users\Admin\AppData\Local\Lina Text\linatext.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2208
- - C:\Users\Admin\AppData\Local\Lina Text\linatext.exe
    "C:\Users\Admin\AppData\Local\Lina Text\linatext.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2752

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\Lina Text\linatext.exe

Filesize
1.7MB

MD5
cd0a90f8fcbd95b8488ef91307fc3a0e

SHA1
ac77ba866c1bd5adbc075d3d1427628f33dc1eb2

SHA256
79e191e63850b75785d959c9f67c858c820654bfb2371c9b85891608e08b4044

SHA512
53fee9c053dc3c270ba6f8a88712e82133ff608d8bd685a41f8950fc48873e3b2eec63c15c5265ecb55fac61c9cf4e5c0e2b41c76632cc0ead546712e92cd84f

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7KUVB.tmp\ef63432fcc2deb1e1fef4a7fca19f0a9332f0c373963de4db3b05f2571ff228a.tmp

Filesize
677KB

MD5
33da9dc521f467c0405d3ef5377ce04b

SHA1
5249d7ce5dfabe5ee6d2fc7d3f3eba1e866b7d1f

SHA256
dbab8a7b2b45fc7001d5e34d3d45ccbe93a7591f12910281acf2c32f8c4e631c

SHA512
a3093637e1d731eab58080e10706db1afbf6e79fbac6593733b61033f97875ecbe230311e9741d349625ec3a66a6435318846d35290db8cd00af76d692699a55

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/672-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/672-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/672-7-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/672-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2208-40-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2208-41-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2208-44-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2208-43-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-51-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-65-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-96-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-92-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-89-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-55-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-56-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-59-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-62-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-47-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-68-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-70-0x0000000000800000-0x00000000008A4000-memory.dmp

Filesize
656KB

Download
memory/2752-76-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-79-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-81-0x0000000000800000-0x00000000008A4000-memory.dmp

Filesize
656KB

Download
memory/2752-83-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/2752-86-0x0000000000400000-0x00000000005AA000-memory.dmp

Filesize
1.7MB

Download
memory/5020-52-0x0000000002240000-0x0000000002241000-memory.dmp

Filesize
4KB

Download
memory/5020-8-0x0000000002240000-0x0000000002241000-memory.dmp

Filesize
4KB

Download
memory/5020-50-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download

Analysis

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