socks5systemz | fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533

General

Target

fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.exe
Size

2.0MB
MD5

9cfeb792e2017828615250651802e806
SHA1

5cea9f3e090b6f237862f5877a74dd0740945c2c
SHA256

fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533
SHA512

e513afbdaeae5957d69ce055d3ffd0d4e02875e1c1068eccc085b601d23c569b792e72ae2c1ef5f21f839d70875f7200a9cfcbfd0e526560441b1e2d879c593f
SSDEEP

49152:32rULD2WJCdbtkzDkiohFKBS7WzavsSNobiml:mrULDVJutk8iqCsv/G+ml

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://csseedb.net/search/?q=67e28dd83a0ba47b435ca84a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1ee8889b5e4fa9281ae978a071ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608fff19c8ee96993e

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/1036-66-0x0000000000970000-0x0000000000A12000-memory.dmp	family_socks5systemz
behavioral2/memory/1036-69-0x0000000000970000-0x0000000000A12000-memory.dmp	family_socks5systemz
behavioral2/memory/1036-78-0x0000000000970000-0x0000000000A12000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
352	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.tmp
2704	rcpcpruler.exe
1036	rcpcpruler.exe

Loads dropped DLL 1 IoCs

pid	Process
352	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.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 WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 352	2020	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.exe	80
PID 2020 wrote to memory of 352	2020	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.exe	80
PID 2020 wrote to memory of 352	2020	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.exe	80
PID 352 wrote to memory of 2704	352	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.tmp	82
PID 352 wrote to memory of 2704	352	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.tmp	82
PID 352 wrote to memory of 2704	352	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.tmp	82
PID 352 wrote to memory of 1036	352	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.tmp	83
PID 352 wrote to memory of 1036	352	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.tmp	83
PID 352 wrote to memory of 1036	352	fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.tmp	83

C:\Users\Admin\AppData\Local\Temp\fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.exe
"C:\Users\Admin\AppData\Local\Temp\fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Users\Admin\AppData\Local\Temp\is-JFDJ0.tmp\fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-JFDJ0.tmp\fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.tmp" /SL5="$C0084,1694937,54272,C:\Users\Admin\AppData\Local\Temp\fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:352
- - C:\Users\Admin\AppData\Local\RCP SPRuler\rcpcpruler.exe
    "C:\Users\Admin\AppData\Local\RCP SPRuler\rcpcpruler.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2704
- - C:\Users\Admin\AppData\Local\RCP SPRuler\rcpcpruler.exe
    "C:\Users\Admin\AppData\Local\RCP SPRuler\rcpcpruler.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1036

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\RCP SPRuler\rcpcpruler.exe

Filesize
1.9MB

MD5
e377ae0325ef95bc5bf256a9d20f8496

SHA1
46d6e133754c99c69e66053fe74bd2baa65ffb95

SHA256
33bbd2314cafc5d831e4c7ce356e4df7c13ad49abf118f5f2d2dd61860b0d63c

SHA512
4d84c0f20e474638a9f584b73c1909257ade25b05285c0423cd9f5f9b0864b8899d9453a9d0cf59152a11da05b2a4cb2ac03155ab9da1c31234bba45da1b193b

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JFDJ0.tmp\fb2a8879ec690cbca5bd2a752cf17f965cbe881da6da4ce9b10eb27283242533.tmp

Filesize
677KB

MD5
f8e1d9f78e12f926961ff9dad1b68cde

SHA1
1fed3aefc1be086d8705c6927c28a1810c98b335

SHA256
fdb33e2812de516fb0ca01304a20d15c1d41e45a82fd0cc70b6b5d816a1f678c

SHA512
33dccb7a47aec149a09baa864dee513d9e3dda0fe500a42fabe46cf8bd74c882dff875a6bd88c2d8a8147285e68621c6bfc31b9b5f6e1c1f859612a80fc79df5

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-RDBL6.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/352-48-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/352-50-0x0000000002440000-0x0000000002441000-memory.dmp

Filesize
4KB

Download
memory/352-7-0x0000000002440000-0x0000000002441000-memory.dmp

Filesize
4KB

Download
memory/1036-77-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-63-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-97-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-94-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-46-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-90-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-87-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-49-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-84-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-53-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-54-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-57-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-60-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-81-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-66-0x0000000000970000-0x0000000000A12000-memory.dmp

Filesize
648KB

Download
memory/1036-67-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-69-0x0000000000970000-0x0000000000A12000-memory.dmp

Filesize
648KB

Download
memory/1036-74-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/1036-78-0x0000000000970000-0x0000000000A12000-memory.dmp

Filesize
648KB

Download
memory/2020-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2020-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2020-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2704-39-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/2704-38-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/2704-43-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download
memory/2704-40-0x0000000000400000-0x00000000005F1000-memory.dmp

Filesize
1.9MB

Download

Analysis

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