socks5systemz | 238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06

General

Target

238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.exe
Size

4.8MB
MD5

4f7e4b35479a942e662355c8e2e6add6
SHA1

388a3f5f5221929058b545742546a1fe15f1978f
SHA256

238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06
SHA512

9be7b1c80d649feb86572829a309fca54ada22cb706ca3e932c27c2f5c02afdf8bf35235c7d976eaa0e4e0fdd28e6623a26c14fef52503823327f0ad23cec514
SSDEEP

98304:mee/xuovuJhRtfUoMpxe4VPGfiqcZtGqxFRt07AVlleRZ1m/VRad:E/IoWJyrBP0y//RtfVls9m/zad

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bvjtbpz.com

http://bvjtbpz.com/search/?q=67e28dd86809f27b415ba51b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1de8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff717c0ef909338

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4256-84-0x0000000000A00000-0x0000000000AA2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
4760	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp
3808	m4atomp3converter.exe
4256	m4atomp3converter.exe

Loads dropped DLL 1 IoCs

pid	Process
4760	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.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	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

pid	Process
4760	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4496 wrote to memory of 4760	4496	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.exe	74
PID 4496 wrote to memory of 4760	4496	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.exe	74
PID 4496 wrote to memory of 4760	4496	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.exe	74
PID 4760 wrote to memory of 3808	4760	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp	75
PID 4760 wrote to memory of 3808	4760	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp	75
PID 4760 wrote to memory of 3808	4760	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp	75
PID 4760 wrote to memory of 4256	4760	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp	76
PID 4760 wrote to memory of 4256	4760	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp	76
PID 4760 wrote to memory of 4256	4760	238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp	76

C:\Users\Admin\AppData\Local\Temp\238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.exe
"C:\Users\Admin\AppData\Local\Temp\238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Users\Admin\AppData\Local\Temp\is-LTO2M.tmp\238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-LTO2M.tmp\238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp" /SL5="$8022A,4783767,54272,C:\Users\Admin\AppData\Local\Temp\238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4760
- - C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
    "C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -i
    3⤵
    - Executes dropped EXE
    PID:3808
- - C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
    "C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -s
    3⤵
    - Executes dropped EXE
    PID:4256

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\M4A to MP3 Free Converter\m4atomp3converter.exe

Filesize
2.9MB

MD5
6b2f758369530e56bff88cd776bb570b

SHA1
850fb4091f0d2ef1460e1b9828646143f46781df

SHA256
407ed914d71b1b92fb655aba6542958b5cbaed3e9b0e2d81261a99b74de799b0

SHA512
9cdd4fb5772a6ae632c186b5a4998fcb337b59f2d922fa2441ae56d1ee73142a3d77d7c78c9c7cc102fbb48198d8c20df40ed102147f6c8c6a3734ea890e48bf

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-LTO2M.tmp\238104b176dfcd0f9f7cc4e31b48532b791a05aeeb3476e39ee6cc4a11f4be06.tmp

Filesize
680KB

MD5
283da5c763c54b41092d9fe0d244b491

SHA1
d5e6a5b76a18c5a1d68244f2c3697bd8881fcf03

SHA256
339d2ff372992255baddd6d21cc15045b42780b25d251f570480e1aacdd00ad9

SHA512
306815b5fd5c387ffd9705097271edf5851cee7c28d1bc707813ce26714e8f722b8a34f73c43903ab6e7303dafc6ab6fa48262e487d86124c037879618cbd45a

Download Submit
\Users\Admin\AppData\Local\Temp\is-HMK9L.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/3808-59-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/3808-64-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/3808-60-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-78-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-94-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-130-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-125-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-122-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-69-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-72-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-75-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-119-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-81-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-84-0x0000000000A00000-0x0000000000AA2000-memory.dmp

Filesize
648KB

Download
memory/4256-86-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-91-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-116-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-97-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-100-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-103-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-106-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-110-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4256-113-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/4496-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4496-67-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4496-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4760-13-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4760-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

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