socks5systemz | a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693

General

Target

a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe
Size

4.6MB
MD5

4173debbc3d407dca3905c212ab537f2
SHA1

807cd0f7e7337545ecde2a1dec4fd9ad6b31ad7a
SHA256

a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693
SHA512

884581348592d891c95e916481d5e2b2fe1aeef7fd55b25acf2010bf542c7f3e6f15e7be6ec1f2813e9a4dc0cbc853c9c0beca2c13b0d6bc5d1e8a2a6827d57d
SSDEEP

98304:mTMDgLaCF/V6GoPhbZQ0sdYJi4LXyrk/BAqZ0pyrXFtbrKeDYSLdCu9zlp:kMDEaG/V6PPhb5sGJDLCrkCXSFlrKUYy

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

cstpazq.net

http://cstpazq.net/search/?q=67e28dd8655bf57a4609f84c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa48e8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c2ed92993f

http://cstpazq.net/search/?q=67e28dd8655bf57a4609f84c7c27d78406abdd88be4b12eab517aa5c96bd86e99d8e4f855a8bbc896c58e713bc90c91d36b5281fc235a925ed3e5cd6bd974a95129070b616e96cc92be510b866db52bee348ee4c2b14a82966836f23d7f210c7ee9d9939cf689512

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2172-85-0x00000000027A0000-0x0000000002842000-memory.dmp	family_socks5systemz
behavioral2/memory/2172-108-0x00000000027A0000-0x0000000002842000-memory.dmp	family_socks5systemz
behavioral2/memory/2172-109-0x00000000027A0000-0x0000000002842000-memory.dmp	family_socks5systemz

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

Processes:

a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmpvirtualsoundcard.exevirtualsoundcard.exe

pid process

4244 a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp
4968 virtualsoundcard.exe
2172 virtualsoundcard.exe
Loads dropped DLL 1 IoCs

Processes:

a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp

pid process

4244 a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.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 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

Processes:

a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp

pid process

4244 a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp

pid	process
4244	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp
4968	virtualsoundcard.exe
2172	virtualsoundcard.exe

pid	process
4244	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
4244	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exea408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp

description	pid	process	target process
PID 2752 wrote to memory of 4244	2752	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp
PID 2752 wrote to memory of 4244	2752	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp
PID 2752 wrote to memory of 4244	2752	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp
PID 4244 wrote to memory of 4968	4244	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp	virtualsoundcard.exe
PID 4244 wrote to memory of 4968	4244	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp	virtualsoundcard.exe
PID 4244 wrote to memory of 4968	4244	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp	virtualsoundcard.exe
PID 4244 wrote to memory of 2172	4244	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp	virtualsoundcard.exe
PID 4244 wrote to memory of 2172	4244	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp	virtualsoundcard.exe
PID 4244 wrote to memory of 2172	4244	a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp	virtualsoundcard.exe

C:\Users\Admin\AppData\Local\Temp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe
"C:\Users\Admin\AppData\Local\Temp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2752

C:\Users\Admin\AppData\Local\Temp\is-6NJGV.tmp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp
"C:\Users\Admin\AppData\Local\Temp\is-6NJGV.tmp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp" /SL5="$8021A,4585671,54272,C:\Users\Admin\AppData\Local\Temp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4244

C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -i
3⤵
- Executes dropped EXE
PID:4968

C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -s
3⤵
- Executes dropped EXE
PID:2172

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\Temp\is-6NJGV.tmp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp
Filesize
680KB

MD5
53a94211658a6bbf3d3a695470f940a6

SHA1
a9909ddfc97dee691e9d60b1257d61a3c1ef4e07

SHA256
d4928c3cacf826943bb44385aac5fb52e6ac69054f31a463df266baf9aa26d01

SHA512
d9c916961abcce8f05089df9cb6310c930aaa29266bfaf378a4dd0c9180ba9186a81393c662ba2a3b1a4da587379d68d532250c1a8d216d44dd532aaf178b402

Download Submit
C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
Filesize
2.6MB

MD5
a0ac562bedc60906db18a7457c4a3e33

SHA1
f9e83a91e0c8609a355bafa25c88a0ae30107fed

SHA256
728d3595972daf3b92bd052193a13a079d0862604c6a88fb3acd739cf08ec38a

SHA512
ccaa43278a250cc6ce03d04344ebd57e928d99e93b83a938eeba65c25a7255de5cadd51bc4d593214a2232c214a47a7c1a0e0ca56cb398e0d74c886470650414

Download Submit
\Users\Admin\AppData\Local\Temp\is-487OC.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/2172-107-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-76-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-87-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-85-0x00000000027A0000-0x0000000002842000-memory.dmp

Filesize
648KB

Download
memory/2172-125-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-122-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-67-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-119-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-116-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-70-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-73-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-108-0x00000000027A0000-0x0000000002842000-memory.dmp

Filesize
648KB

Download
memory/2172-79-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-82-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-128-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-113-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-92-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-95-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-98-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-101-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-104-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/2172-109-0x00000000027A0000-0x0000000002842000-memory.dmp

Filesize
648KB

Download
memory/2752-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2752-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2752-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4244-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4244-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4968-64-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/4968-60-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download
memory/4968-59-0x0000000000400000-0x00000000006A4000-memory.dmp

Filesize
2.6MB

Download

Analysis

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