socks5systemz | 27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d

General

Target

27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.exe
Size

5.0MB
MD5

72e9a5e9c7a4ab7b2808ccfff3724800
SHA1

52e00e8426659bf0254ad37efcd635748733bc70
SHA256

27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d
SHA512

bc83faae57edd7c6dbb833c7f99ab08e8ce3ed46fa9592c39b79a71cb28c8ab8a1829175e557830583d1585993db6b7c0ecc38bf1a80016cd2b3bbf308e8539a
SSDEEP

98304:mnEhhQ0CkErOO34gteQED1eNnz66A3763zZiDKXcHICsqRvP+wy+bXsk:JhhQ0CkErOy7SkzS3+jXAkgvyC8k

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bfsigcu.com

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3936-86-0x0000000000960000-0x0000000000A02000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Executes dropped EXE 3 IoCs

Processes:

27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmpaudialstunebite32_64.exeaudialstunebite32_64.exe

pid process

1216 27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp
3572 audialstunebite32_64.exe
3936 audialstunebite32_64.exe
Loads dropped DLL 1 IoCs

Processes:

27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp

pid process

1216 27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp
Unexpected DNS network traffic destination 3 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description ioc

Destination IP 91.211.247.248
Destination IP 152.89.198.214
Destination IP 91.211.247.248
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

Processes:

27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp

pid process

1216 27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp

pid	process
1216	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp
3572	audialstunebite32_64.exe
3936	audialstunebite32_64.exe

pid	process
1216	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp

description	ioc
Destination IP	91.211.247.248
Destination IP	152.89.198.214
Destination IP	91.211.247.248

pid	process
1216	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.exe27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp

description	pid	process	target process
PID 60 wrote to memory of 1216	60	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.exe	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp
PID 60 wrote to memory of 1216	60	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.exe	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp
PID 60 wrote to memory of 1216	60	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.exe	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp
PID 1216 wrote to memory of 3572	1216	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp	audialstunebite32_64.exe
PID 1216 wrote to memory of 3572	1216	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp	audialstunebite32_64.exe
PID 1216 wrote to memory of 3572	1216	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp	audialstunebite32_64.exe
PID 1216 wrote to memory of 3936	1216	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp	audialstunebite32_64.exe
PID 1216 wrote to memory of 3936	1216	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp	audialstunebite32_64.exe
PID 1216 wrote to memory of 3936	1216	27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp	audialstunebite32_64.exe

C:\Users\Admin\AppData\Local\Temp\27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.exe
"C:\Users\Admin\AppData\Local\Temp\27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:60

C:\Users\Admin\AppData\Local\Temp\is-L0AQB.tmp\27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp
"C:\Users\Admin\AppData\Local\Temp\is-L0AQB.tmp\27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp" /SL5="$B0058,5041087,54272,C:\Users\Admin\AppData\Local\Temp\27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1216

C:\Users\Admin\AppData\Local\Audials Tunebite\audialstunebite32_64.exe
"C:\Users\Admin\AppData\Local\Audials Tunebite\audialstunebite32_64.exe" -i
3⤵
- Executes dropped EXE
PID:3572

C:\Users\Admin\AppData\Local\Audials Tunebite\audialstunebite32_64.exe
"C:\Users\Admin\AppData\Local\Audials Tunebite\audialstunebite32_64.exe" -s
3⤵
- Executes dropped EXE
PID:3936

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\Audials Tunebite\audialstunebite32_64.exe
Filesize
2.6MB

MD5
67c8429120752e142f21afb3be0e77e6

SHA1
e7a97f866aaa2502a27a33fbacc231c62014589c

SHA256
860afa1238caff338048d57540d5627c340b2654580b33cc691ef9c3d0143885

SHA512
6447c2cb899a1258b29b8b286580ddfdadec747006331adaaae0e00defa4bf817464ad9a4be9a7620fa1d3f3d20ae48f807652354ce08c837b089ed534e2de0e

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-G1J94.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-L0AQB.tmp\27fcc68941217c5d8ccd83bb5b1f5ef8c1e4afed196a5d7d152084f88d8ab00d.tmp
Filesize
680KB

MD5
9c0c87dbb79871a4914149cd5acefbf8

SHA1
35627d4c709114e03240747deb05d154743ccb59

SHA256
0b29aab1bdbef4c1435541320b77e3a47d063f2cb0657018a918907d8ede18bf

SHA512
6608bfbf67b572584cd068ca60eb71fa972384f7c3cfa87011e82e5c15cb10332d4dcc6db23fc3153104dd635e6b2eb9e27d6eb08a07f4a396b04757a20080bd

Download Submit
memory/60-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/60-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/60-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1216-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1216-10-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3572-59-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3572-61-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3572-63-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3572-65-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-74-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-88-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-67-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-77-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-80-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-83-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-86-0x0000000000960000-0x0000000000A02000-memory.dmp

Filesize
648KB

Download
memory/3936-71-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-93-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-96-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-99-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-102-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-105-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-108-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-111-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download
memory/3936-114-0x0000000000400000-0x0000000000693000-memory.dmp

Filesize
2.6MB

Download

Analysis

Sharing