socks5systemz | 1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8

General

Target

1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe
Size

5.0MB
MD5

915ca029bb259f339cbf12728e87d38b
SHA1

61dec59da649eeca4d1058ca346f399e60592c2d
SHA256

1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8
SHA512

d229b4096609194cd2fb770d8846fc751bfa3f34b8c99f3f33e62f143648045050f8faaeed7145aa931666369093c924afa4ae0f48f50054d34ec1ee9b57cffb
SSDEEP

98304:mZs9TCAas88G0/J8LYe++PVbcrs1NoNI7bb8fJ8bG+lqAKop+3gXtyuqa3cI0UQ:hD//6LYe+kV4rISub8fJO8A2gd6a3Ng

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

disbgye.info

http://disbgye.info/search/?q=67e28dd83954f07a4008f8497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ae8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff712c7ef949c38

http://disbgye.info/search/?q=67e28dd83954f07a4008f8497c27d78406abdd88be4b12eab517aa5c96bd86e895834c845a8bbc896c58e713bc90c91f36b5281fc235a925ed3e5cd6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee9d993ccd6e9015

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3116-85-0x0000000000800000-0x00000000008A2000-memory.dmp	family_socks5systemz
behavioral1/memory/3116-109-0x0000000000800000-0x00000000008A2000-memory.dmp	family_socks5systemz
behavioral1/memory/3116-108-0x0000000000800000-0x00000000008A2000-memory.dmp	family_socks5systemz

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

Processes:

1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmpm4atomp3converter.exem4atomp3converter.exe

pid process

3828 1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
4520 m4atomp3converter.exe
3116 m4atomp3converter.exe
Loads dropped DLL 1 IoCs

Processes:

1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp

pid process

3828 1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.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:

1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp

pid process

3828 1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp

pid	process
3828	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
4520	m4atomp3converter.exe
3116	m4atomp3converter.exe

pid	process
3828	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
3828	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp

description	pid	process	target process
PID 2124 wrote to memory of 3828	2124	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
PID 2124 wrote to memory of 3828	2124	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
PID 2124 wrote to memory of 3828	2124	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
PID 3828 wrote to memory of 4520	3828	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	m4atomp3converter.exe
PID 3828 wrote to memory of 4520	3828	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	m4atomp3converter.exe
PID 3828 wrote to memory of 4520	3828	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	m4atomp3converter.exe
PID 3828 wrote to memory of 3116	3828	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	m4atomp3converter.exe
PID 3828 wrote to memory of 3116	3828	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	m4atomp3converter.exe
PID 3828 wrote to memory of 3116	3828	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	m4atomp3converter.exe

C:\Users\Admin\AppData\Local\Temp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe
"C:\Users\Admin\AppData\Local\Temp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2124

C:\Users\Admin\AppData\Local\Temp\is-HKBUE.tmp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
"C:\Users\Admin\AppData\Local\Temp\is-HKBUE.tmp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp" /SL5="$1100B2,4963989,54272,C:\Users\Admin\AppData\Local\Temp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3828

C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
"C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -i
3⤵
- Executes dropped EXE
PID:4520

C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
"C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -s
3⤵
- Executes dropped EXE
PID:3116

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
Filesize
3.1MB

MD5
ec0f3158d5afd17be39133044b926a9e

SHA1
8506c10216959bf3fd5be3f6feb845c0424874a1

SHA256
c2c221e2beadceb56a1914c4561de953a307683ace06ef704135683dd85dcc58

SHA512
f12cccfd80d745fd3b1464c88e8954cdc1f1c8f6de2a71a769e06c3eb58a808e7a805ca5d2d1d7dfb085a7a8815283a87c3266ed0ebf3a9bd82ec9112d5d5a33

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

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-HKBUE.tmp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
Filesize
680KB

MD5
283da5c763c54b41092d9fe0d244b491

SHA1
d5e6a5b76a18c5a1d68244f2c3697bd8881fcf03

SHA256
339d2ff372992255baddd6d21cc15045b42780b25d251f570480e1aacdd00ad9

SHA512
306815b5fd5c387ffd9705097271edf5851cee7c28d1bc707813ce26714e8f722b8a34f73c43903ab6e7303dafc6ab6fa48262e487d86124c037879618cbd45a

Download Submit
memory/2124-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2124-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2124-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3116-95-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-98-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-116-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-113-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-67-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-108-0x0000000000800000-0x00000000008A2000-memory.dmp

Filesize
648KB

Download
memory/3116-109-0x0000000000800000-0x00000000008A2000-memory.dmp

Filesize
648KB

Download
memory/3116-70-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-73-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-76-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-79-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-82-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-85-0x0000000000800000-0x00000000008A2000-memory.dmp

Filesize
648KB

Download
memory/3116-87-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-92-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-107-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-104-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3116-101-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/3828-13-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3828-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4520-63-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/4520-59-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/4520-64-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/4520-60-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download

Analysis

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