socks5systemz | 935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6

General

Target

935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.exe
Size

4.7MB
MD5

c59664ebf86b27e920fd99e953a501c2
SHA1

1e5a0a1ff09e514684b26dcb0a3459e26968e7c0
SHA256

935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6
SHA512

b81d6ee64b84bb0cf65907113a4602f0d84702e3d42c5d077b7cded0f41d59432c8c42b2c1da311b3f69c989359190c3908606992fbf7a1958b5f967275f3e38
SSDEEP

98304:msXiH3MVPODhuwTf5NIpgFl39wHqGqqZoz5ALF9fb9OZo0x:7WPfUy39wTLoKbpOZoQ

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bvheiqz.com

http://bvheiqz.com/search/?q=67e28dd8645fa72f495daa1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c2ee939238

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4252-85-0x0000000000990000-0x0000000000A32000-memory.dmp	family_socks5systemz

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

Processes:

935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmpvirtualsoundcard32.exevirtualsoundcard32.exe

pid process

216 935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp
5004 virtualsoundcard32.exe
4252 virtualsoundcard32.exe
Loads dropped DLL 1 IoCs

Processes:

935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp

pid process

216 935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

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

Processes:

935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp

pid process

216 935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp

pid	process
216	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp
5004	virtualsoundcard32.exe
4252	virtualsoundcard32.exe

pid	process
216	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp

description	ioc
Destination IP	45.155.250.90

pid	process
216	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.exe935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp

description	pid	process	target process
PID 2244 wrote to memory of 216	2244	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.exe	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp
PID 2244 wrote to memory of 216	2244	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.exe	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp
PID 2244 wrote to memory of 216	2244	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.exe	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp
PID 216 wrote to memory of 5004	216	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp	virtualsoundcard32.exe
PID 216 wrote to memory of 5004	216	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp	virtualsoundcard32.exe
PID 216 wrote to memory of 5004	216	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp	virtualsoundcard32.exe
PID 216 wrote to memory of 4252	216	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp	virtualsoundcard32.exe
PID 216 wrote to memory of 4252	216	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp	virtualsoundcard32.exe
PID 216 wrote to memory of 4252	216	935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp	virtualsoundcard32.exe

C:\Users\Admin\AppData\Local\Temp\935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.exe
"C:\Users\Admin\AppData\Local\Temp\935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2244

C:\Users\Admin\AppData\Local\Temp\is-U1H07.tmp\935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp
"C:\Users\Admin\AppData\Local\Temp\is-U1H07.tmp\935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp" /SL5="$10004A,4666061,54272,C:\Users\Admin\AppData\Local\Temp\935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:216

C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard32.exe
"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard32.exe" -i
3⤵
- Executes dropped EXE
PID:5004

C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard32.exe
"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard32.exe" -s
3⤵
- Executes dropped EXE
PID:4252

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\Temp\is-U1H07.tmp\935b6081b2426aafb317f2014f475d7cf6a28be0d0d0b77174d2f2c999dfc8f6.tmp
Filesize
680KB

MD5
6d75c2498ef0af9a91b71d0d81d1b95e

SHA1
1476ec8e947af9a397658bec20b17854042cc0c3

SHA256
468db6dd9e5c87c34d9cb7e56ddbfaf068bbe44436fa2cfc2ada8029051e4bee

SHA512
bdc9b460a463da60c019eda9dd40929a61e77081b699d6c3a4c05309280252f7493015cf463243ff9dd3e20ddd324db39a8697f312fabfea64c78aed9ddb5027

Download Submit
C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard32.exe
Filesize
2.7MB

MD5
31f7fcdda406c646eba01fce6f5f21ff

SHA1
bfff935eb21cbf384d4ec4775963d2f4e35aa910

SHA256
58d4e2c8094d160bba8bb3f68f01316a88281d7f5cc7a45d1b7ca81c1ae51a00

SHA512
265bc751cb350fcddcc574c84749e64ad3321bdf2ed12c9f497fcdfabcf4c7753b975b1f5ac5b648d990d7aa070096b877699888c9e8219b16fe5257f1851eb3

Download Submit
\Users\Admin\AppData\Local\Temp\is-L28E0.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/216-10-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/216-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2244-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2244-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2244-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4252-107-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-92-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-131-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-126-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-70-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-73-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-76-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-79-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-82-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-85-0x0000000000990000-0x0000000000A32000-memory.dmp

Filesize
648KB

Download
memory/4252-87-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-67-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-95-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-98-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-101-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-104-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-123-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-111-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-114-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-117-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/4252-120-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/5004-59-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/5004-60-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download
memory/5004-64-0x0000000000400000-0x00000000006C1000-memory.dmp

Filesize
2.8MB

Download

Analysis

Sharing