socks5systemz | 65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4

General

Target

65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.exe
Size

4.8MB
MD5

37963fac936267f5017c34c4196bd560
SHA1

ead98ec1acebddc8db43b25bc0ae3658e197aab0
SHA256

65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4
SHA512

16df6e6f2e4f57e6339a650fb5f4d6cead20faab15bc816d66b8306e15609ea3e9e44cb6f397c91ac2926afcfd995db701557efdc21f1345083ef70971e5e834
SSDEEP

98304:mjzu/1GY3nqno8R7HAzzKOM2pkwz9+upwaWSTqqTbVMtz0HolIx7ny/r:Yzu/133n2fAzz62pkc9+YwaWSRhM27nA

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bvtxnun.com

http://bvtxnun.com/search/?q=67e28dd86c0ca77c400cfe4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c2ef949b3b

http://bvtxnun.com/search/?q=67e28dd86c0ca77c400cfe4c7c27d78406abdd88be4b12eab517aa5c96bd86e9918e4b845a8bbc896c58e713bc90c91136b5281fc235a925ed3e51d6bd974a95129070b616e96cc92be510b866db52bee348ee4c2b14a82966836f23d7f210c7ee9d9939cd6e9716

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4720-84-0x0000000000970000-0x0000000000A12000-memory.dmp	family_socks5systemz
behavioral2/memory/4720-107-0x0000000000970000-0x0000000000A12000-memory.dmp	family_socks5systemz
behavioral2/memory/4720-108-0x0000000000970000-0x0000000000A12000-memory.dmp	family_socks5systemz

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

Processes:

65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmprecordpadsoundrecorder32.exerecordpadsoundrecorder32.exe

pid process

1492 65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp
204 recordpadsoundrecorder32.exe
4720 recordpadsoundrecorder32.exe
Loads dropped DLL 1 IoCs

Processes:

65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp

pid process

1492 65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.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:

65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp

pid process

1492 65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp

pid	process
1492	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp
204	recordpadsoundrecorder32.exe
4720	recordpadsoundrecorder32.exe

pid	process
1492	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp

description	ioc
Destination IP	45.155.250.90

pid	process
1492	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.exe65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp

description	pid	process	target process
PID 4888 wrote to memory of 1492	4888	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.exe	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp
PID 4888 wrote to memory of 1492	4888	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.exe	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp
PID 4888 wrote to memory of 1492	4888	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.exe	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp
PID 1492 wrote to memory of 204	1492	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp	recordpadsoundrecorder32.exe
PID 1492 wrote to memory of 204	1492	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp	recordpadsoundrecorder32.exe
PID 1492 wrote to memory of 204	1492	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp	recordpadsoundrecorder32.exe
PID 1492 wrote to memory of 4720	1492	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp	recordpadsoundrecorder32.exe
PID 1492 wrote to memory of 4720	1492	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp	recordpadsoundrecorder32.exe
PID 1492 wrote to memory of 4720	1492	65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp	recordpadsoundrecorder32.exe

C:\Users\Admin\AppData\Local\Temp\65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.exe
"C:\Users\Admin\AppData\Local\Temp\65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4888

C:\Users\Admin\AppData\Local\Temp\is-NUGPL.tmp\65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp
"C:\Users\Admin\AppData\Local\Temp\is-NUGPL.tmp\65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp" /SL5="$1101F4,4730712,54272,C:\Users\Admin\AppData\Local\Temp\65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1492

C:\Users\Admin\AppData\Local\RecordPad Sound Recorder\recordpadsoundrecorder32.exe
"C:\Users\Admin\AppData\Local\RecordPad Sound Recorder\recordpadsoundrecorder32.exe" -i
3⤵
- Executes dropped EXE
PID:204

C:\Users\Admin\AppData\Local\RecordPad Sound Recorder\recordpadsoundrecorder32.exe
"C:\Users\Admin\AppData\Local\RecordPad Sound Recorder\recordpadsoundrecorder32.exe" -s
3⤵
- Executes dropped EXE
PID:4720

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\RecordPad Sound Recorder\recordpadsoundrecorder32.exe
Filesize
2.8MB

MD5
02419e483f600286d8788f2b711859d7

SHA1
5267117136b46e4922c756fa707da43d56529ffc

SHA256
b9935e1da48ae241a91fc060e0fa43a6c237b8000301ca808d572547090fdd3a

SHA512
d108f88b463399644206b8b14cf3d22b57411c950bd8695930cc817f6a869d6af8b83839052dc12d0387fb12a87219417ba8271b66f95df82fc46e9b650f7158

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-NUGPL.tmp\65d4b8fa161790bc77c0be5dfb459c33a0ab2458b96f3d0a4ab2ee9c98b7cdf4.tmp
Filesize
680KB

MD5
8ef7001015e126e74bc41268504ca1e2

SHA1
b30c0fa54ecb63c735407144a3297e0b9d881e27

SHA256
e06e234073ae4a9df232aa1d535f02429a371748e164606c1b1a4c74bd98c56c

SHA512
122df0a13f2d0c3103f0f686863cfab46114a417c5d6a4382410c2ccf0aa3e9859d8e760b5c1860c776b1064f5bccbf1e8aa50108f948f9240a5dd80d31cf17b

Download Submit
\Users\Admin\AppData\Local\Temp\is-JND0K.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/204-63-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/204-59-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/204-60-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/1492-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1492-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4720-81-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-97-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-127-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-124-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-69-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-72-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-75-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-78-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-121-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-84-0x0000000000970000-0x0000000000A12000-memory.dmp

Filesize
648KB

Download
memory/4720-86-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-91-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-94-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-66-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-100-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-103-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-106-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-107-0x0000000000970000-0x0000000000A12000-memory.dmp

Filesize
648KB

Download
memory/4720-108-0x0000000000970000-0x0000000000A12000-memory.dmp

Filesize
648KB

Download
memory/4720-112-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-115-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4720-118-0x0000000000400000-0x00000000006D5000-memory.dmp

Filesize
2.8MB

Download
memory/4888-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4888-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4888-67-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

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