socks5systemz | 5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c

General

Target

5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.exe
Size

4.9MB
MD5

e5367392dcd72e44e6fad7aa7abed64c
SHA1

316a7bc9f17bc04bb372e5168f13cc9e411d8361
SHA256

5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c
SHA512

813deda97075ed63f6c8d6e227f3458553c5daca41065d293b569674ec661cd2ac139350b87ed9949708127df901588397492224755158fa00fad7ca6557fa8a
SSDEEP

98304:CGfMq2ecBZOVd9ovD/59VmvRYpzkPXXNpokg1s4IYnUviFkBCWFrNEyLFQxcMv:fLaBodivxGYpzkvXN2vSgnkiF0NXQW8

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bxxidun.com

http://bxxidun.com/search/?q=67e28dd86f59a17b435afa187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff614c2e7939238

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/276-84-0x0000000000AA0000-0x0000000000B42000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
400	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp
3840	wavmp3splitter32.exe
276	wavmp3splitter32.exe

Loads dropped DLL 1 IoCs

pid	Process
400	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.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
400	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 744 wrote to memory of 400	744	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.exe	77
PID 744 wrote to memory of 400	744	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.exe	77
PID 744 wrote to memory of 400	744	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.exe	77
PID 400 wrote to memory of 3840	400	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp	78
PID 400 wrote to memory of 3840	400	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp	78
PID 400 wrote to memory of 3840	400	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp	78
PID 400 wrote to memory of 276	400	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp	79
PID 400 wrote to memory of 276	400	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp	79
PID 400 wrote to memory of 276	400	5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp	79

C:\Users\Admin\AppData\Local\Temp\5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.exe
"C:\Users\Admin\AppData\Local\Temp\5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:744
- C:\Users\Admin\AppData\Local\Temp\is-LSC78.tmp\5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-LSC78.tmp\5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp" /SL5="$800D8,4931479,54272,C:\Users\Admin\AppData\Local\Temp\5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:400
- - C:\Users\Admin\AppData\Local\Direct WAV MP3 Splitter\wavmp3splitter32.exe
    "C:\Users\Admin\AppData\Local\Direct WAV MP3 Splitter\wavmp3splitter32.exe" -i
    3⤵
    - Executes dropped EXE
    PID:3840
- - C:\Users\Admin\AppData\Local\Direct WAV MP3 Splitter\wavmp3splitter32.exe
    "C:\Users\Admin\AppData\Local\Direct WAV MP3 Splitter\wavmp3splitter32.exe" -s
    3⤵
    - Executes dropped EXE
    PID:276

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\Direct WAV MP3 Splitter\wavmp3splitter32.exe

Filesize
3.4MB

MD5
ca5425428664c81b4873dcf3c9ff31ae

SHA1
e1a1ee6e6c83f8d66ca7a421b41632620d60b4a4

SHA256
65b7624f9700719b2e1dfd98beb37897ac6d66a9e3fd3955dd4162826171f762

SHA512
213d937d901ace1186575d85025dbf7874b430d489c47ae33a7d2e6594df78fc50624835ca4a1b06c6984615b6e785d7f6ac013f2bd740482d4bcee1f825d86c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3F4IL.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-LSC78.tmp\5cdba561b164c4fa4e931cc251a7dcf46c36feb9258e6097c6ec427cea837c6c.tmp

Filesize
680KB

MD5
59177ea3e8147d91b694e9949c60d194

SHA1
5c8cfd3fcccd7be056c7c0e2e4fc063c38dc14bd

SHA256
9687ab4b33b1a083194713be5a0f872ebb949773b832a20063a507073859e28c

SHA512
a235dab7d5dc6652f5f8256c1e2c19aef2f583ead02a920ee17658eeb64e8a9620767594d7e4b6ca4aa030643821133c1a18823c55ea769d3221383927ea8a08

Download Submit
memory/276-97-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-100-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-116-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-113-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-109-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-68-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-67-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-106-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-103-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-94-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-71-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-74-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-77-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-80-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-83-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/276-84-0x0000000000AA0000-0x0000000000B42000-memory.dmp

Filesize
648KB

Download
memory/276-89-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/400-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/400-10-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/744-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/744-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/744-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3840-59-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/3840-64-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download
memory/3840-62-0x0000000000400000-0x0000000000765000-memory.dmp

Filesize
3.4MB

Download

Analysis

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