socks5systemz | a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78

General

Target

a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.exe
Size

4.2MB
MD5

3c0486c6b729b58be8d61a588042fe60
SHA1

f0dadc498e0e283067b8078755eb08291cb00875
SHA256

a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78
SHA512

c3f2f4c8020a0faaf538b5cdd13fac3df7b3af42020759d80ddd426c225ae5ebc2484d4b4906d029e68978ead6554143704a0cdf682cd30545c3469e0a4b7644
SSDEEP

98304:+NEWcDPHRY0cmniwusjoDUoRThHwEdkB+23K+JwAl+ehd1ZG:XDvu0nniJsjotRTyEdWK+qAZDXG

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3500-83-0x0000000000950000-0x00000000009F2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
4996	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.tmp
4320	voicemeetervirtualaudiomixer.exe
3500	voicemeetervirtualaudiomixer.exe

Loads dropped DLL 1 IoCs

pid	Process
4996	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.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	152.89.198.214

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

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2428 wrote to memory of 4996	2428	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.exe	75
PID 2428 wrote to memory of 4996	2428	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.exe	75
PID 2428 wrote to memory of 4996	2428	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.exe	75
PID 4996 wrote to memory of 4320	4996	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.tmp	76
PID 4996 wrote to memory of 4320	4996	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.tmp	76
PID 4996 wrote to memory of 4320	4996	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.tmp	76
PID 4996 wrote to memory of 3500	4996	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.tmp	77
PID 4996 wrote to memory of 3500	4996	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.tmp	77
PID 4996 wrote to memory of 3500	4996	a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.tmp	77

C:\Users\Admin\AppData\Local\Temp\a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.exe
"C:\Users\Admin\AppData\Local\Temp\a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Users\Admin\AppData\Local\Temp\is-KBTLM.tmp\a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-KBTLM.tmp\a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.tmp" /SL5="$501FC,4158883,54272,C:\Users\Admin\AppData\Local\Temp\a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:4996
- - C:\Users\Admin\AppData\Local\Voicemeeter Virtual Audio Mixer\voicemeetervirtualaudiomixer.exe
    "C:\Users\Admin\AppData\Local\Voicemeeter Virtual Audio Mixer\voicemeetervirtualaudiomixer.exe" -i
    3⤵
    - Executes dropped EXE
    PID:4320
- - C:\Users\Admin\AppData\Local\Voicemeeter Virtual Audio Mixer\voicemeetervirtualaudiomixer.exe
    "C:\Users\Admin\AppData\Local\Voicemeeter Virtual Audio Mixer\voicemeetervirtualaudiomixer.exe" -s
    3⤵
    - Executes dropped EXE
    PID:3500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\is-KBTLM.tmp\a278dcd48ea29a9c840471736178b32258890629c654026883cf66218a593d78.tmp

Filesize
695KB

MD5
6d358a553dec31fddf3eab4a4d472886

SHA1
c540bf44ac6d365e1ed2c57ab3e8bf17618fc506

SHA256
76067bda33dfcce46e1ba3163622883206803b01643c31c746f87e4120ed43be

SHA512
321b6963862cab73ec3af99f0b9bf50675244182aedcc16e8bb0af804f2ede79fe066e3ffcdb9ffb0b5c2402ca444f8aaa4cd6aff5d7e2a98db44764c1a60a96

Download Submit
C:\Users\Admin\AppData\Local\Voicemeeter Virtual Audio Mixer\libeay32.dll

Filesize
2.0MB

MD5
1176a2fcbc3cfb77207db7575dd6a522

SHA1
e0a854c77a65e542712c9fe3feae2331fcddb7f4

SHA256
553200e21658e7976d496c52cc1aeb50446b877ccda4f0b073a553ec3fb48560

SHA512
bb00340e4931342c4db499d68e98542f401a985c062810225ee661a7a289a885dab8c64f37fb231212ad2a5d703f3fd0528e8402fc1033cf4128d075714e3f34

Download Submit
C:\Users\Admin\AppData\Local\Voicemeeter Virtual Audio Mixer\voicemeetervirtualaudiomixer.exe

Filesize
1.7MB

MD5
9d9184a786b7622b0ab24c8a48c783f8

SHA1
1cdfdb301ad20bcab7c138fcb553c9f3fc091803

SHA256
c823e8decbf5ea45d5b005a7ba3638183f5bd20c0f657bbd47b81ab7b683ee12

SHA512
c6719b865650adbafd955debe90a237baa809188830ad36b831ae6cb74389e8d9218957715b6b6dd907b1485f6c84f50a864ae1511fc01e53e3477275e3d26f6

Download Submit
\Users\Admin\AppData\Local\Temp\is-06U0M.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/2428-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2428-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2428-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3500-79-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-92-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-131-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-67-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-126-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-123-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-70-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-73-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-76-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-120-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-82-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-83-0x0000000000950000-0x00000000009F2000-memory.dmp

Filesize
648KB

Download
memory/3500-87-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-117-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-95-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-98-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-101-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-104-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-108-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-111-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/3500-114-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/4320-60-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/4320-59-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/4320-63-0x0000000000400000-0x00000000005C1000-memory.dmp

Filesize
1.8MB

Download
memory/4996-13-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4996-69-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download

Analysis

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