socks5systemz | 6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf

General

Target

6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe
Size

4.6MB
MD5

58eb122dd941b073aeb74b26405daabf
SHA1

53016c3fcd310a4ae69d092357c65a1c9d039cf3
SHA256

6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf
SHA512

f62c5a190f160aee979dae732b4b05e37848a3088cde793764370be78ada103c5997f5eea2460d39e55e23dd6445b744337e74e013d48b7a509c369d2cb472f0
SSDEEP

98304:m0bfkgeK85TCGgbO8uWm2l51pI+55RRFldnFWZB80bTi:ctK85gbG2l51pHuTi

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bvewiuo.com

http://bvewiuo.com/search/?q=67e28dd8690cfb204406a51a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978fe71ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6f8dfd11c9e692

Signatures

Detect Socks5Systemz Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2492-92-0x0000000002200000-0x00000000022A2000-memory.dmp	family_socks5systemz
behavioral1/memory/2492-117-0x0000000002200000-0x00000000022A2000-memory.dmp	family_socks5systemz
behavioral1/memory/2492-118-0x0000000002200000-0x00000000022A2000-memory.dmp	family_socks5systemz
behavioral1/memory/2492-119-0x0000000002200000-0x00000000022A2000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Executes dropped EXE 3 IoCs

Processes:

6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmplesserextent.exelesserextent.exe

pid process

2616 6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
2724 lesserextent.exe
2492 lesserextent.exe

pid	process
2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
2724	lesserextent.exe
2492	lesserextent.exe

Loads dropped DLL 5 IoCs

Processes:

6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp

pid	process
1932	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe
2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.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 91.211.247.248
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

Processes:

6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp

pid process

2616 6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp

description	ioc
Destination IP	91.211.247.248

pid	process
2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp

description	pid	process	target process
PID 1932 wrote to memory of 2616	1932	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
PID 1932 wrote to memory of 2616	1932	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
PID 1932 wrote to memory of 2616	1932	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
PID 1932 wrote to memory of 2616	1932	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
PID 1932 wrote to memory of 2616	1932	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
PID 1932 wrote to memory of 2616	1932	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
PID 1932 wrote to memory of 2616	1932	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
PID 2616 wrote to memory of 2724	2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp	lesserextent.exe
PID 2616 wrote to memory of 2724	2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp	lesserextent.exe
PID 2616 wrote to memory of 2724	2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp	lesserextent.exe
PID 2616 wrote to memory of 2724	2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp	lesserextent.exe
PID 2616 wrote to memory of 2492	2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp	lesserextent.exe
PID 2616 wrote to memory of 2492	2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp	lesserextent.exe
PID 2616 wrote to memory of 2492	2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp	lesserextent.exe
PID 2616 wrote to memory of 2492	2616	6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp	lesserextent.exe

C:\Users\Admin\AppData\Local\Temp\6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe
"C:\Users\Admin\AppData\Local\Temp\6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1932

C:\Users\Admin\AppData\Local\Temp\is-MEL9L.tmp\6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
"C:\Users\Admin\AppData\Local\Temp\is-MEL9L.tmp\6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp" /SL5="$400F4,4578392,54272,C:\Users\Admin\AppData\Local\Temp\6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2616

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe
"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe" -i
3⤵
- Executes dropped EXE
PID:2724

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe
"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe" -s
3⤵
- Executes dropped EXE
PID:2492

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

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe
Filesize
2.9MB

MD5
17c1fe7f92c5eb03c25f05e81ebb4f44

SHA1
80d73d1b6f8e7d8994af635336a878508f020d50

SHA256
143c8c0dad57722054b87f29f19f9c1655f267061c57e3365fe2fb23c0d48fe2

SHA512
681d9264f0a22c98523d75ff36ebc41b9867f58a2a9a60bb88c40a81d5e6a7ab2c4df5c403462b47e161a696c46ac6ed77df6aa8980a022567223bd36bef9fb4

Download Submit
\Users\Admin\AppData\Local\Temp\is-HV10I.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-HV10I.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-MEL9L.tmp\6fd18cab707c2e95476e61739e7ff266d3cb50a4a390bde8c23f549927e06bdf.tmp
Filesize
680KB

MD5
39f46a845fdd530a4a9ca15635e7707e

SHA1
d6b7371d6e05f6deb6fb41eedd0293f974e2d2fb

SHA256
6dd8d1b893cc3ba7da604c9d0c2a8802e44c1a6e6b275d64d80e8bdd5845b122

SHA512
d377f88bc6e71b25b010cd50cb2a7b160d59b55f5c570f4a8530d0ae5ad828c036646de3111cc3e7f85e1c1b9d17fef04f86adad2b79c20a9ccceae467c6ebeb

Download Submit
memory/1932-73-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1932-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1932-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2492-113-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-117-0x0000000002200000-0x00000000022A2000-memory.dmp

Filesize
648KB

Download
memory/2492-135-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-132-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-71-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-129-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-126-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-75-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-123-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-79-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-82-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-85-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-88-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-91-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-92-0x0000000002200000-0x00000000022A2000-memory.dmp

Filesize
648KB

Download
memory/2492-98-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-101-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-104-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-107-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-110-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-119-0x0000000002200000-0x00000000022A2000-memory.dmp

Filesize
648KB

Download
memory/2492-116-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2492-118-0x0000000002200000-0x00000000022A2000-memory.dmp

Filesize
648KB

Download
memory/2616-64-0x00000000039A0000-0x0000000003C85000-memory.dmp

Filesize
2.9MB

Download
memory/2616-12-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2616-76-0x00000000039A0000-0x0000000003C85000-memory.dmp

Filesize
2.9MB

Download
memory/2616-74-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2724-65-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2724-69-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download
memory/2724-66-0x0000000000400000-0x00000000006E5000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads