socks5systemz | 275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7

General

Target

275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.exe
Size

4.8MB
MD5

a1f7e8d69f54697f9e4fea2617c6ad13
SHA1

5bdda2a37694e680cded193b94d102c949729dc5
SHA256

275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7
SHA512

06a64d15e608473c1023dc193d1996c71daa2eae6540d45019a353dd3d6c220e52685e7143b21382f41a944dedd5a39ca966f51a1adfb94cd8947a9c55e2b9fc
SSDEEP

98304:mMWPo/89J0L3BFN3vlih5FOvH3myAmLoL+61vEV6Le0g5KqDIV:vWPo/9xFN9ifFOPCa72g5LIV

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

cemygrq.net

http://cemygrq.net/search/?q=67e28dd8655df07d165afd1f7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff713c8ef909f38

http://cemygrq.net/search/?q=67e28dd8655df07d165afd1f7c27d78406abdd88be4b12eab517aa5c96bd86ee95844a885a8bbc896c58e713bc90c91936b5281fc235a925ed3e01d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9d9833cd6a9315

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/4728-85-0x00000000028E0000-0x0000000002982000-memory.dmp	family_socks5systemz
behavioral2/memory/4728-109-0x00000000028E0000-0x0000000002982000-memory.dmp	family_socks5systemz
behavioral2/memory/4728-110-0x00000000028E0000-0x0000000002982000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
4948	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp
4028	moonvoiceassist32.exe
4728	moonvoiceassist32.exe

Loads dropped DLL 1 IoCs

pid	Process
4948	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.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	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

pid	Process
4948	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3144 wrote to memory of 4948	3144	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.exe	80
PID 3144 wrote to memory of 4948	3144	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.exe	80
PID 3144 wrote to memory of 4948	3144	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.exe	80
PID 4948 wrote to memory of 4028	4948	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp	82
PID 4948 wrote to memory of 4028	4948	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp	82
PID 4948 wrote to memory of 4028	4948	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp	82
PID 4948 wrote to memory of 4728	4948	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp	83
PID 4948 wrote to memory of 4728	4948	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp	83
PID 4948 wrote to memory of 4728	4948	275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp	83

C:\Users\Admin\AppData\Local\Temp\275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.exe
"C:\Users\Admin\AppData\Local\Temp\275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3144
- C:\Users\Admin\AppData\Local\Temp\is-E2AVT.tmp\275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-E2AVT.tmp\275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp" /SL5="$40204,4833272,54272,C:\Users\Admin\AppData\Local\Temp\275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4948
- - C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe
    "C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe" -i
    3⤵
    - Executes dropped EXE
    PID:4028
- - C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe
    "C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe" -s
    3⤵
    - Executes dropped EXE
    PID:4728

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe

Filesize
3.1MB

MD5
8c1bcd4ea15a92d503e3ba1166f1e1fd

SHA1
0acd32778724f17604c2c4384faa10d605e261c5

SHA256
fc61fec05a67f02cb2c014a2257b1cae57bf623cf3a863b98310f9091a6455b2

SHA512
c4ce7e4f5d15e63000d89fdefbd31988d825dfc96f8c6b090b0eb2acbdc676d3541a27abd05dbfe8863b30d3cb1413b171c764c5749db504bedfbc2973c26697

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2FED3.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-E2AVT.tmp\275cf7706f9d5d49cbcb52032850b1995211b81438257b00582040831ced93d7.tmp

Filesize
680KB

MD5
b69bf30e5f252cfcf7d82c84f8374a82

SHA1
4730c8a8a06df84e640f6ebc2aaa6f1236405f04

SHA256
d84b7d9a290803b0f334562ef81c1048c271d37fb9bc2d819fce473f26cb364b

SHA512
278be468edc57b6774c81755b8334eb9084eb683eeedc7d7537e6b6fdc2c104ba5392e98853dcd4e8ae052e7ca92a880b34b10c46096cfc2bc5034a15e46e52a

Download Submit
memory/3144-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3144-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3144-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4028-59-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4028-60-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4028-63-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-76-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-102-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-117-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-70-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-73-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-114-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-79-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-82-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-85-0x00000000028E0000-0x0000000002982000-memory.dmp

Filesize
648KB

Download
memory/4728-87-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-93-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-96-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-99-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-67-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-105-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-108-0x0000000000400000-0x0000000000718000-memory.dmp

Filesize
3.1MB

Download
memory/4728-109-0x00000000028E0000-0x0000000002982000-memory.dmp

Filesize
648KB

Download
memory/4728-110-0x00000000028E0000-0x0000000002982000-memory.dmp

Filesize
648KB

Download
memory/4948-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4948-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing