socks5systemz | 83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13

General

Target

83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.exe
Size

5.0MB
MD5

a4da913568df592bbc5d676aed2ac48a
SHA1

af53442cc64f8c7bf1b6d34258b9d0fa650fcf85
SHA256

83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13
SHA512

c3e6651549a1afc60d53fcc4aa6167a16c34935d979c8179bf30d1fcc1c43066ea36d8198a77bb8946046fa7231f4bca31f9c4af225dc61cabe4bada85a9e6c7
SSDEEP

98304:mZ45jNYucmwMJnnJ3F0swTsSpF2qhpBleRltwCntDXpgvX/LW0VTXeb8T1:+KNYNmw6JVxSpF/pKRltZDpg7W0FXmy

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

aadcfji.ru

http://aadcfji.ru/search/?q=67e28dd8655df07d165afd1f7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff712c8ef949238

http://aadcfji.ru/search/?q=67e28dd8655df07d165afd1f7c27d78406abdd88be4b12eab517aa5c96bd86ee95844a885a8bbc896c58e713bc90c91936b5281fc235a925ed3e01d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9d9933cd6e9e15

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/1584-85-0x0000000002910000-0x00000000029B2000-memory.dmp	family_socks5systemz
behavioral2/memory/1584-110-0x0000000002910000-0x00000000029B2000-memory.dmp	family_socks5systemz
behavioral2/memory/1584-111-0x0000000002910000-0x00000000029B2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
5024	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp
3992	m4atomp3converter.exe
1584	m4atomp3converter.exe

Loads dropped DLL 1 IoCs

pid	Process
5024	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.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 FindShellTrayWindow 1 IoCs

pid	Process
5024	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4836 wrote to memory of 5024	4836	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.exe	79
PID 4836 wrote to memory of 5024	4836	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.exe	79
PID 4836 wrote to memory of 5024	4836	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.exe	79
PID 5024 wrote to memory of 3992	5024	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp	81
PID 5024 wrote to memory of 3992	5024	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp	81
PID 5024 wrote to memory of 3992	5024	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp	81
PID 5024 wrote to memory of 1584	5024	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp	82
PID 5024 wrote to memory of 1584	5024	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp	82
PID 5024 wrote to memory of 1584	5024	83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp	82

C:\Users\Admin\AppData\Local\Temp\83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.exe
"C:\Users\Admin\AppData\Local\Temp\83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4836
- C:\Users\Admin\AppData\Local\Temp\is-SVS8U.tmp\83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-SVS8U.tmp\83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp" /SL5="$40236,4958759,54272,C:\Users\Admin\AppData\Local\Temp\83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:5024
- - 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:3992
- - 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:1584

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\M4A to MP3 Free Converter\m4atomp3converter.exe

Filesize
3.1MB

MD5
977df7ea9dac8da84eefa7f1b47bc6cc

SHA1
5257efa83b17db554b0828c2063d79e29d0735af

SHA256
45139ccac8646cea65cc08b24ca16edf4abadea44cd7ce935d0f665ea4aa8d05

SHA512
21b3bc00014d476f1bbf3600d6863b9c88e90b206b2ca3e1d914b051f3c9fd065cfb0d07beb8cc59a9a4e6306855bce20e7e814be0b494d0851e48d92f85ec0e

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-SVS8U.tmp\83e4543ae2d1aaf2d357fdc14642858a0a2c6867196c9ced20aa84459b592b13.tmp

Filesize
680KB

MD5
283da5c763c54b41092d9fe0d244b491

SHA1
d5e6a5b76a18c5a1d68244f2c3697bd8881fcf03

SHA256
339d2ff372992255baddd6d21cc15045b42780b25d251f570480e1aacdd00ad9

SHA512
306815b5fd5c387ffd9705097271edf5851cee7c28d1bc707813ce26714e8f722b8a34f73c43903ab6e7303dafc6ab6fa48262e487d86124c037879618cbd45a

Download Submit
memory/1584-97-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-80-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-118-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-115-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-111-0x0000000002910000-0x00000000029B2000-memory.dmp

Filesize
648KB

Download
memory/1584-110-0x0000000002910000-0x00000000029B2000-memory.dmp

Filesize
648KB

Download
memory/1584-109-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-68-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-106-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-103-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-71-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-74-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-77-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-100-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-83-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-85-0x0000000002910000-0x00000000029B2000-memory.dmp

Filesize
648KB

Download
memory/1584-89-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/1584-94-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/3992-65-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/3992-63-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/3992-60-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/3992-59-0x0000000000400000-0x000000000071D000-memory.dmp

Filesize
3.1MB

Download
memory/4836-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4836-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4836-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/5024-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/5024-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

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