socks5systemz | d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e

General

Target

d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.exe
Size

4.6MB
MD5

e5fdbb583aa1fc4425b434d0ecb3ae95
SHA1

5ab7f2df587b2b8eb2763f6ab520cd009c52d3f9
SHA256

d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e
SHA512

e63ecb76a0919193b2a8e894871d66372e2171135a67cdda9bb2bde2a4e0a1de3ee86cc0f8f61caa0647974b55d9a6ea679dc6be8270b45452661c1cc1917174
SSDEEP

98304:mWSlXLVTgBJs2zjT2hW2HL2NnTrkcnz3BTxAAftRwk/M2Up4D+oMUx:o9LVT6Js8jT2fHLEnTrkcz0ITPMtGDH

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bunqbgd.com

http://bunqbgd.com/search/?q=67e28dd8655bf57a4609f84c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa48e8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c2ec979f3c

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2352-83-0x0000000000A40000-0x0000000000AE2000-memory.dmp	family_socks5systemz

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

Processes:

d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmpvirtualsoundcard32.exevirtualsoundcard32.exe

pid process

2432 d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp
4748 virtualsoundcard32.exe
2352 virtualsoundcard32.exe
Loads dropped DLL 1 IoCs

Processes:

d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp

pid process

2432 d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.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 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:

d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp

pid process

2432 d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp

pid	process
2432	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp
4748	virtualsoundcard32.exe
2352	virtualsoundcard32.exe

pid	process
2432	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp

description	ioc
Destination IP	91.211.247.248

pid	process
2432	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.exed522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp

description	pid	process	target process
PID 4896 wrote to memory of 2432	4896	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.exe	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp
PID 4896 wrote to memory of 2432	4896	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.exe	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp
PID 4896 wrote to memory of 2432	4896	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.exe	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp
PID 2432 wrote to memory of 4748	2432	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp	virtualsoundcard32.exe
PID 2432 wrote to memory of 4748	2432	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp	virtualsoundcard32.exe
PID 2432 wrote to memory of 4748	2432	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp	virtualsoundcard32.exe
PID 2432 wrote to memory of 2352	2432	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp	virtualsoundcard32.exe
PID 2432 wrote to memory of 2352	2432	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp	virtualsoundcard32.exe
PID 2432 wrote to memory of 2352	2432	d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp	virtualsoundcard32.exe

C:\Users\Admin\AppData\Local\Temp\d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.exe
"C:\Users\Admin\AppData\Local\Temp\d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4896

C:\Users\Admin\AppData\Local\Temp\is-RDCCN.tmp\d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp
"C:\Users\Admin\AppData\Local\Temp\is-RDCCN.tmp\d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.tmp" /SL5="$300E0,4616536,54272,C:\Users\Admin\AppData\Local\Temp\d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2432

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:4748

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:2352

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\is-RDCCN.tmp\d522bfd80b0a0848a38722586beac3cbe1500c88975bfad821652e3dddd5cd2e.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
fc51264f03841af5d18e4fc3b7866f69

SHA1
575c072c665795938f7a3e89118c5ab6e6b32572

SHA256
3b44df2958b53cc8be383c5f3df16d684a43d422ed430033a468bed8f2fe9302

SHA512
59cad95d9010073db7b87079fdc6f95eb8230f8e33b58cf9f91a2158ec5e25ad3dbf674a5761a4193b292ac0bc3e273b7f104eb6ea64bbd596570798b9fc7e00

Download Submit
\Users\Admin\AppData\Local\Temp\is-OU0K4.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/2352-100-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-103-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-130-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-125-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-122-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-119-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-116-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-113-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-69-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-72-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-75-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-78-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-81-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-83-0x0000000000A40000-0x0000000000AE2000-memory.dmp

Filesize
648KB

Download
memory/2352-86-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-91-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-94-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-97-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-110-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2352-106-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/2432-12-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2432-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4748-64-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/4748-60-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/4748-59-0x0000000000400000-0x00000000006C0000-memory.dmp

Filesize
2.8MB

Download
memory/4896-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4896-67-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4896-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download

Analysis

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