socks5systemz | b86f509978dec1f400e89a63d2de8b770363b2e904316e9063b9ad46c080175f

General

Target

380d33122267e606830bba85597bbb9c.exe
Size

4.8MB
MD5

380d33122267e606830bba85597bbb9c
SHA1

3c280b31f6be9b2a0d15f1cf0d932f314bbb724f
SHA256

b86f509978dec1f400e89a63d2de8b770363b2e904316e9063b9ad46c080175f
SHA512

b7fa933a545da21541a38d5a14c376710cf792e222ebe4ab751d5090eb42f0ca4bf6dc90f943a67525c02d2684fdc9c8a973df46ca78204fe0d7ce47719053c1
SSDEEP

98304:m1vNssAFCK0nMd3lhQ0UOaHc27PivQ5HOwRTtLrh4D9q1SKJetbNolkcZU:jsm93lhgOekM/Bt3o99tbO/ZU

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

aavebxf.ru

http://aavebxf.ru/search/?q=67e28dd8690cfb204406a51a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978fe71ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6f8cf813c3ec94

http://aavebxf.ru/search/?q=67e28dd8690cfb204406a51a7c27d78406abdd88be4b12eab517aa5c96bd86e5908f4e96148ab2865b77f80ebad9c10f7cb63037ed2ab423a43b4383ba915d911ec07bb606a0708720fa11b861c353baf51aba1e7242fa7023cc366689fe19c2e8979938cc

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2700-94-0x0000000002560000-0x0000000002602000-memory.dmp	family_socks5systemz
behavioral1/memory/2700-116-0x0000000002560000-0x0000000002602000-memory.dmp	family_socks5systemz
behavioral1/memory/2700-117-0x0000000002560000-0x0000000002602000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
1812	380d33122267e606830bba85597bbb9c.tmp
2736	audioconverter32.exe
2700	audioconverter32.exe

Loads dropped DLL 6 IoCs

pid	Process
2416	380d33122267e606830bba85597bbb9c.exe
1812	380d33122267e606830bba85597bbb9c.tmp
1812	380d33122267e606830bba85597bbb9c.tmp
1812	380d33122267e606830bba85597bbb9c.tmp
1812	380d33122267e606830bba85597bbb9c.tmp
1812	380d33122267e606830bba85597bbb9c.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	152.89.198.214

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
1812	380d33122267e606830bba85597bbb9c.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2416 wrote to memory of 1812	2416	380d33122267e606830bba85597bbb9c.exe	28
PID 2416 wrote to memory of 1812	2416	380d33122267e606830bba85597bbb9c.exe	28
PID 2416 wrote to memory of 1812	2416	380d33122267e606830bba85597bbb9c.exe	28
PID 2416 wrote to memory of 1812	2416	380d33122267e606830bba85597bbb9c.exe	28
PID 2416 wrote to memory of 1812	2416	380d33122267e606830bba85597bbb9c.exe	28
PID 2416 wrote to memory of 1812	2416	380d33122267e606830bba85597bbb9c.exe	28
PID 2416 wrote to memory of 1812	2416	380d33122267e606830bba85597bbb9c.exe	28
PID 1812 wrote to memory of 2736	1812	380d33122267e606830bba85597bbb9c.tmp	29
PID 1812 wrote to memory of 2736	1812	380d33122267e606830bba85597bbb9c.tmp	29
PID 1812 wrote to memory of 2736	1812	380d33122267e606830bba85597bbb9c.tmp	29
PID 1812 wrote to memory of 2736	1812	380d33122267e606830bba85597bbb9c.tmp	29
PID 1812 wrote to memory of 2700	1812	380d33122267e606830bba85597bbb9c.tmp	30
PID 1812 wrote to memory of 2700	1812	380d33122267e606830bba85597bbb9c.tmp	30
PID 1812 wrote to memory of 2700	1812	380d33122267e606830bba85597bbb9c.tmp	30
PID 1812 wrote to memory of 2700	1812	380d33122267e606830bba85597bbb9c.tmp	30

C:\Users\Admin\AppData\Local\Temp\380d33122267e606830bba85597bbb9c.exe
"C:\Users\Admin\AppData\Local\Temp\380d33122267e606830bba85597bbb9c.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Users\Admin\AppData\Local\Temp\is-S6VPB.tmp\380d33122267e606830bba85597bbb9c.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-S6VPB.tmp\380d33122267e606830bba85597bbb9c.tmp" /SL5="$40026,4803463,54272,C:\Users\Admin\AppData\Local\Temp\380d33122267e606830bba85597bbb9c.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:1812
- - C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
    "C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2736
- - C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
    "C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2700

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\Free Audio Converter\audioconverter32.exe

Filesize
2.9MB

MD5
fecefb27f2f5fffc11c380e2c13d8308

SHA1
e11cc93d7cc1a4d01d7660220a16121b4032da6c

SHA256
14370d3de60c9acbc677944195f6e9d3e3477fc5e2fb7999dcc13c3fc3eafe45

SHA512
c75f4e35040cabdade4b19410b1ff1d6da0b150a491cb5fc9564ca1c987bd9715db2d56623811558b8c29be79d2818ea817156faf1ea34b4f838017ffd62d2f2

Download Submit
\Users\Admin\AppData\Local\Temp\is-S6VPB.tmp\380d33122267e606830bba85597bbb9c.tmp

Filesize
680KB

MD5
f2ea57162349fbb5a88b276f91880c7d

SHA1
31d0ef8f01ec1dbca631b2aee891ec46c0a2c663

SHA256
756ee2c303f097f361c1f6f16f118612acd5ceb277fd7642695b36fedf0dba68

SHA512
3dd06f405e036ade9fd52ac7ae189e8c1bafc48dc09f6f346f5b1ddb32ec43ecf527bd96d2c446d320cd22ea63d5eae430cab92533847d83a0af015224a13799

Download Submit
\Users\Admin\AppData\Local\Temp\is-USHI2.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-USHI2.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/1812-12-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1812-64-0x00000000058E0000-0x0000000005BC9000-memory.dmp

Filesize
2.9MB

Download
memory/1812-80-0x00000000058E0000-0x0000000005BC9000-memory.dmp

Filesize
2.9MB

Download
memory/1812-76-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2416-75-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2416-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2416-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2700-81-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-100-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-124-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-77-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-121-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-117-0x0000000002560000-0x0000000002602000-memory.dmp

Filesize
648KB

Download
memory/2700-84-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-87-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-90-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-93-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-94-0x0000000002560000-0x0000000002602000-memory.dmp

Filesize
648KB

Download
memory/2700-73-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-103-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-106-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-109-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-112-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-115-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2700-116-0x0000000002560000-0x0000000002602000-memory.dmp

Filesize
648KB

Download
memory/2736-65-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2736-66-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2736-70-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download

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