socks5systemz | c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2

General

Target

c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.exe
Size

4.8MB
MD5

eb23a0baa591fd3b7e33016587dcfb46
SHA1

a7699a58ca2f8775f2073c0823e495900f4b7829
SHA256

c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2
SHA512

4fc7a6877421feb206c43650e6dcbbe62819c149ed8cb1845bc475d2c046452618b3a05de10d36dbb102d4451671b2040af8150c9b5171080830ffee68d0417b
SSDEEP

98304:mHlKatxBR/BRWZ5UD983xIhDYYGoQTvnaeq8no3IMhLdG+9ejZ153IzIIx:ylKAZBcZO+IhDjDQTP88nYIwM+9e7aH

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

dlulpyf.info

http://dlulpyf.info/search/?q=67e28dd8690ba728400aae4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c2ec949f3d

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3320-85-0x0000000000980000-0x0000000000A22000-memory.dmp	family_socks5systemz

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

Processes:

c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmpaudioconverter32.exeaudioconverter32.exe

pid process

2628 c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp
2832 audioconverter32.exe
3320 audioconverter32.exe
Loads dropped DLL 1 IoCs

Processes:

c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp

pid process

2628 c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.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 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 FindShellTrayWindow 1 IoCs

Processes:

c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp

pid process

2628 c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp

pid	process
2628	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp
2832	audioconverter32.exe
3320	audioconverter32.exe

pid	process
2628	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
2628	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.exec711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp

description	pid	process	target process
PID 3964 wrote to memory of 2628	3964	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.exe	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp
PID 3964 wrote to memory of 2628	3964	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.exe	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp
PID 3964 wrote to memory of 2628	3964	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.exe	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp
PID 2628 wrote to memory of 2832	2628	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp	audioconverter32.exe
PID 2628 wrote to memory of 2832	2628	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp	audioconverter32.exe
PID 2628 wrote to memory of 2832	2628	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp	audioconverter32.exe
PID 2628 wrote to memory of 3320	2628	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp	audioconverter32.exe
PID 2628 wrote to memory of 3320	2628	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp	audioconverter32.exe
PID 2628 wrote to memory of 3320	2628	c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp	audioconverter32.exe

C:\Users\Admin\AppData\Local\Temp\c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.exe
"C:\Users\Admin\AppData\Local\Temp\c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3964

C:\Users\Admin\AppData\Local\Temp\is-2D6S3.tmp\c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp
"C:\Users\Admin\AppData\Local\Temp\is-2D6S3.tmp\c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp" /SL5="$5021C,4781632,54272,C:\Users\Admin\AppData\Local\Temp\c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2628

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:2832

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:3320

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\Free Audio Converter\audioconverter32.exe
Filesize
2.9MB

MD5
fe5a0308c69340110637dd3313081fec

SHA1
fbfc3d5b84ba6108288b6c530e261e03b490e63f

SHA256
7a2320a3175dbdb7943ebe41a4157760dc13dc1bdc75839afcb7c53904bb9125

SHA512
42c9dc01ac6b3db2f3dffffa33f39dd4a9bb1956a8598058115b2590148cee7e8eb603dcc93161a843d49eeb273ba6f9d03bd00b06f37f3a81220384e9fac321

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2D6S3.tmp\c711f62fac5d20715addf5dd398b86c50ecc15e2182b60c7c7d3125dc2b2aea2.tmp
Filesize
680KB

MD5
f2ea57162349fbb5a88b276f91880c7d

SHA1
31d0ef8f01ec1dbca631b2aee891ec46c0a2c663

SHA256
756ee2c303f097f361c1f6f16f118612acd5ceb277fd7642695b36fedf0dba68

SHA512
3dd06f405e036ade9fd52ac7ae189e8c1bafc48dc09f6f346f5b1ddb32ec43ecf527bd96d2c446d320cd22ea63d5eae430cab92533847d83a0af015224a13799

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

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/2628-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2628-10-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2832-64-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2832-59-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2832-60-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-82-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-92-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-131-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-126-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-70-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-73-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-76-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-79-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-123-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-85-0x0000000000980000-0x0000000000A22000-memory.dmp

Filesize
648KB

Download
memory/3320-89-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-67-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-95-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-98-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-101-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-104-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-107-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-111-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-114-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-117-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3320-120-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/3964-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3964-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3964-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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