socks5systemz | ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9

General

Target

ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe
Size

4.5MB
MD5

452df1ddf452db76265d93eee3c5a524
SHA1

d0d52b1c09509e4481f40ae479f3a65e34689fe9
SHA256

ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9
SHA512

86a7778cb03bf3f483f0c70742b2869c746bc574e516fe9f56b858447d24f5751c8080eb4fa15ae758e477f5e98fdd83c0a1c844f7b6f7dca5b4215e53ca23e0
SSDEEP

98304:m/ByB4CMftNn9wc74TIi3CwP43ngSA6WA52I1Aro9mVq8NAQNt/DF9R:HqfDn9374TN37tRDA5A898NhhR

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/4484-86-0x0000000000900000-0x00000000009A2000-memory.dmp	family_socks5systemz
behavioral1/memory/4484-109-0x0000000000900000-0x00000000009A2000-memory.dmp	family_socks5systemz
behavioral1/memory/4484-110-0x0000000000900000-0x00000000009A2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
4056	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp
4516	cybersoundaudiodirector.exe
4484	cybersoundaudiodirector.exe

Loads dropped DLL 1 IoCs

pid	Process
4056	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.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
4056	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 4056	2440	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe	83
PID 2440 wrote to memory of 4056	2440	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe	83
PID 2440 wrote to memory of 4056	2440	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe	83
PID 4056 wrote to memory of 4516	4056	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp	87
PID 4056 wrote to memory of 4516	4056	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp	87
PID 4056 wrote to memory of 4516	4056	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp	87
PID 4056 wrote to memory of 4484	4056	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp	88
PID 4056 wrote to memory of 4484	4056	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp	88
PID 4056 wrote to memory of 4484	4056	ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp	88

C:\Users\Admin\AppData\Local\Temp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe
"C:\Users\Admin\AppData\Local\Temp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Users\Admin\AppData\Local\Temp\is-3U6T5.tmp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-3U6T5.tmp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp" /SL5="$B011C,4458175,54272,C:\Users\Admin\AppData\Local\Temp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4056
- - C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe
    "C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe" -i
    3⤵
    - Executes dropped EXE
    PID:4516
- - C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe
    "C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe" -s
    3⤵
    - Executes dropped EXE
    PID:4484

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\CyberSound AudioDirector\cybersoundaudiodirector.exe

Filesize
2.5MB

MD5
0c1b7352c43e558562ee7dd2c85108a4

SHA1
399b714f784a97c8ce935c0905384b627a3c6016

SHA256
cc719dd2c39a09f7f621585d9c5e84a011d40bcd9d8a3a4a26d2b4d7490b7612

SHA512
8e05837505c80147c972a3fea9d0edf3c514d46b7ec9d8a4e740892a5d1269aae945c5d6606be311f702efc1579c80eebb487b0c93c31f2459e54b913b24bea3

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3U6T5.tmp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp

Filesize
680KB

MD5
9a66562af1741b32df6da2623d7c5495

SHA1
817eb882a12486fe41c650afc3e032f31006c53d

SHA256
0f4986165bde4f9ed80bb873e8c398c817140b12685d6cd81cd1723100ebe0c7

SHA512
92b996173f843c9cf1dcc16f3e3715478905bd9d9ff35c7472b8575eb87baa779d60a363f8da09070c9df2872947de60487040a1f2034681a13796462af2450c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-8O9ED.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/2440-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2440-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2440-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4056-13-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4056-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4484-96-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-87-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-68-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-117-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-114-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-71-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-74-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-77-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-80-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-83-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-86-0x0000000000900000-0x00000000009A2000-memory.dmp

Filesize
648KB

Download
memory/4484-110-0x0000000000900000-0x00000000009A2000-memory.dmp

Filesize
648KB

Download
memory/4484-93-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-109-0x0000000000900000-0x00000000009A2000-memory.dmp

Filesize
648KB

Download
memory/4484-99-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-102-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-105-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4484-108-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4516-59-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4516-64-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4516-60-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download
memory/4516-65-0x0000000000400000-0x000000000067E000-memory.dmp

Filesize
2.5MB

Download

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