socks5systemz | 390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345

General

Target

390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.exe
Size

4.6MB
MD5

ca39bd40beb013b70bc8e68bc13b6b88
SHA1

d6116b23d974ed79b431cb559dde21c2da6197f2
SHA256

390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345
SHA512

41c845164b2cb2588e56932819d38ea840e1f1ae85af79ebef8e32871660cc6c731db346c12dde73b0c785fc7b62b4aabef5e75c1c5d594b96d8e943c14fd139
SSDEEP

98304:m7ZxpbjUAnvXnZxuhvi99WEFsNe2o4HZ8UJ:0ZxpL/ZwhvMy2KZ8UJ

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bhbedgd.com

http://bhbedgd.com/search/?q=67e28dd86c0ca77c400cfe4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff614c2e7969d3e

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4092-83-0x0000000000800000-0x00000000008A2000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz

Executes dropped EXE 3 IoCs

pid	Process
1816	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp
4348	freesoundrecorder.exe
4092	freesoundrecorder.exe

Loads dropped DLL 1 IoCs

pid	Process
1816	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

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

pid	Process
1816	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 1816	2412	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.exe	75
PID 2412 wrote to memory of 1816	2412	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.exe	75
PID 2412 wrote to memory of 1816	2412	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.exe	75
PID 1816 wrote to memory of 4348	1816	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp	76
PID 1816 wrote to memory of 4348	1816	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp	76
PID 1816 wrote to memory of 4348	1816	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp	76
PID 1816 wrote to memory of 4092	1816	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp	77
PID 1816 wrote to memory of 4092	1816	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp	77
PID 1816 wrote to memory of 4092	1816	390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp	77

C:\Users\Admin\AppData\Local\Temp\390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.exe
"C:\Users\Admin\AppData\Local\Temp\390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Users\Admin\AppData\Local\Temp\is-GUA60.tmp\390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-GUA60.tmp\390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp" /SL5="$1101E2,4607505,54272,C:\Users\Admin\AppData\Local\Temp\390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:1816
- - C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe
    "C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe" -i
    3⤵
    - Executes dropped EXE
    PID:4348
- - C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe
    "C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe" -s
    3⤵
    - Executes dropped EXE
    PID:4092

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\Free Sound Recorder\freesoundrecorder.exe

Filesize
2.8MB

MD5
4b30534b16490530f1e66855704f75ee

SHA1
cb61ab49110dd2ff926e15df341b48547690da41

SHA256
ebb750b6e4422c86854fa8d26a39d6eef50fd20f1767b1a851134e1d5dd3415c

SHA512
d7168b741f5fba7c2fd80a4e3963af4ce9127fb3957a7f7ce2f4c95ce1b78d72967f00d88c2ed67f4ab995440ef98112353dd5b0d355bc7f142b1d2435674527

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-GUA60.tmp\390fb138f1c89f85d558e5bef92275b2aeda2211d9ce8f6f2bbd009ddcacf345.tmp

Filesize
680KB

MD5
b6d7e7be9e535610aa1ed5a592873b26

SHA1
19865e0970b1b0a7de692c320e0385ab46731052

SHA256
6ddf8051724719b28ed512c60325619a1d5f89819a3f72ece16c5dbd02c4ec3d

SHA512
d874788d1352dd03fa6e788f08f2d5fb1756362c999ab8698c75aa63a6a9ac7f407448440300ca46ee2bf407bc225ee19e9d76bfd242a8cd5739282e5077983a

Download Submit
\Users\Admin\AppData\Local\Temp\is-STIP2.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/1816-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1816-67-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2412-66-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2412-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2412-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4092-99-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-93-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-129-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-68-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-71-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-74-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-77-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-80-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-83-0x0000000000800000-0x00000000008A2000-memory.dmp

Filesize
648KB

Download
memory/4092-85-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-90-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-124-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-96-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-121-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-102-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-105-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-109-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-112-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-115-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4092-118-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4348-59-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4348-63-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download
memory/4348-60-0x0000000000400000-0x00000000006D3000-memory.dmp

Filesize
2.8MB

Download

Analysis

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