socks5systemz | 666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530

General

Target

666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.exe
Size

4.2MB
MD5

9b844a2851661bc730684a4a2fe14d01
SHA1

2adc3a1a0c4151faac4da7577a7296b7b8ebd8bd
SHA256

666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530
SHA512

f49454a88a45603d352cbce0869b63bb2b662c2625c6090e457ab89a6fdca446a626e634c96aa7dc06a5ec86ce1d24ef9e68238e5f3ea60b6f1fad7ab41e5f2e
SSDEEP

98304:VuIiurjtASfW9EEDLZ40Wd7tXoQyaDC7UCMWn6VQvo3WpjGKvYb:t9rjtASSEYZ40WrByOCghW6i75vYb

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://dlzddeo.info/search/?q=67e28dd83854f77c460aad1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4be8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffa13c7e7949239

http://dlzddeo.info/search/?q=67e28dd83854f77c460aad1d7c27d78406abdd88be4b12eab517aa5c96bd86ec938449885a8bbc896c58e713bc90c91e36b5281fc235a925ed3e5cd6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee90983cc56e9e14

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1700-84-0x0000000000910000-0x00000000009B2000-memory.dmp	family_socks5systemz
behavioral1/memory/1700-110-0x0000000000910000-0x00000000009B2000-memory.dmp	family_socks5systemz
behavioral1/memory/1700-111-0x0000000000910000-0x00000000009B2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
992	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.tmp
4828	cutterjoiner.exe
1700	cutterjoiner.exe

Loads dropped DLL 1 IoCs

pid	Process
992	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.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

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 992	4696	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.exe	82
PID 4696 wrote to memory of 992	4696	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.exe	82
PID 4696 wrote to memory of 992	4696	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.exe	82
PID 992 wrote to memory of 4828	992	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.tmp	86
PID 992 wrote to memory of 4828	992	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.tmp	86
PID 992 wrote to memory of 4828	992	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.tmp	86
PID 992 wrote to memory of 1700	992	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.tmp	87
PID 992 wrote to memory of 1700	992	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.tmp	87
PID 992 wrote to memory of 1700	992	666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.tmp	87

C:\Users\Admin\AppData\Local\Temp\666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.exe
"C:\Users\Admin\AppData\Local\Temp\666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4696
- C:\Users\Admin\AppData\Local\Temp\is-IRH07.tmp\666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-IRH07.tmp\666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.tmp" /SL5="$8011E,4114177,54272,C:\Users\Admin\AppData\Local\Temp\666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:992
- - C:\Users\Admin\AppData\Local\Sound Cutter Joiner\cutterjoiner.exe
    "C:\Users\Admin\AppData\Local\Sound Cutter Joiner\cutterjoiner.exe" -i
    3⤵
    - Executes dropped EXE
    PID:4828
- - C:\Users\Admin\AppData\Local\Sound Cutter Joiner\cutterjoiner.exe
    "C:\Users\Admin\AppData\Local\Sound Cutter Joiner\cutterjoiner.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Sound Cutter Joiner\cutterjoiner.exe

Filesize
1.9MB

MD5
9c28718c3969eeef83e2ff256d06738c

SHA1
68a5fdd0f8a51ccd6ee15b6e4368881e5ac8339d

SHA256
187745ab5561689d41debad40ffdd98cff033fd3e41328607c24811a17395cd8

SHA512
236f83637d03dc6c3e9fc6561e3404815cfe2e4983eb492ff9a6d52fdd06d707a35fa342e2ceb950432558dc574b32c5c252e9a203f875823a04899b63553750

Download Submit
C:\Users\Admin\AppData\Local\Sound Cutter Joiner\libeay32.dll

Filesize
1.9MB

MD5
5fbd844a6ce26deb5337e8e6dd7c7b70

SHA1
5302e49b2027a07c7bb8f95d45510efc0d954cf8

SHA256
f0d640c4e07c81c29f0ec2b603ec3017bdd4db0d0e26c3fa364a6bbf45826058

SHA512
c383b5ec9fb9efd53cdf00c2b0940fe60a35a857f8be40ae0763647c3523712553910aca8504768cc86895b2168525fa6043d567e66e0ed5696e2c8e5e7b992d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-IRH07.tmp\666bd2362bf87a87551fa40f29e1694a9233f508c9bfacb5f58eb045b351e530.tmp

Filesize
696KB

MD5
ba80765f4bf80ee1a8469206c3d331e9

SHA1
bc6eb14c0bf6a0755014c5330602b4a89234c7fb

SHA256
7a323325db0f71b23cb9e1855aed3482f459072f158198beebf010e62953461e

SHA512
9ab1620658164e50c667fa0b89d0909cf2c046517e4a6b67cfe4d24aba470914bd966577448043997e19e34bae6af3e17edb798fde0e43055003f35fddb5e313

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/992-70-0x0000000000400000-0x00000000004BE000-memory.dmp

Filesize
760KB

Download
memory/992-10-0x0000000000400000-0x00000000004BE000-memory.dmp

Filesize
760KB

Download
memory/1700-94-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-106-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-118-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-115-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-111-0x0000000000910000-0x00000000009B2000-memory.dmp

Filesize
648KB

Download
memory/1700-68-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-110-0x0000000000910000-0x00000000009B2000-memory.dmp

Filesize
648KB

Download
memory/1700-109-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-71-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-74-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-77-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-80-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-83-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-84-0x0000000000910000-0x00000000009B2000-memory.dmp

Filesize
648KB

Download
memory/1700-89-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-103-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-97-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/1700-100-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/4696-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4696-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4696-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4828-60-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/4828-64-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/4828-59-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download
memory/4828-63-0x0000000000400000-0x00000000005EE000-memory.dmp

Filesize
1.9MB

Download

Analysis

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