socks5systemz | 7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd

General

Target

8f054a8b456dfbada75b7a2ef3ad7d73.exe
Size

1.8MB
MD5

8f054a8b456dfbada75b7a2ef3ad7d73
SHA1

d4496ee10ebcc4e2fb2f96d6a52ada228ba53530
SHA256

7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd
SHA512

8b9edb729e0012e06b1eade35fac69471432349f2facfe4fc0904404e02978d14e5dd0821d8c46657e9bd0aaf48226bac75f3c1773c86663fcc934b6adc1c83e
SSDEEP

49152:C9mKJlfHPcJxlNkiWvE7m/7Y5ErBggstoOsN:MmYH0JzNDMEyEyBgNoXN

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://bovdqhe.com/search/?q=67e28dd86554fa2a495aa4197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a071ea771795af8e05c64bdb22f31df92d8b38e316a667d307eca743ec4c2b07b52966923b6e86f812c1e99c

http://bovdqhe.com/search/?q=67e28dd86554fa2a495aa4197c27d78406abdd88be4b12eab517aa5c96bd86ee90834e815a8bbc896c58e713bc90c91836b5281fc235a925ed3e03d6bd974a95129070b618e96cc92be20ea778c255bbe258b90d3b4eed3233d1626a8ff811c9e792993acb66

Signatures

Detect Socks5Systemz Payload 5 IoCs

resource	yara_rule
behavioral1/memory/1728-72-0x0000000002580000-0x0000000002623000-memory.dmp	family_socks5systemz
behavioral1/memory/1728-75-0x0000000002580000-0x0000000002623000-memory.dmp	family_socks5systemz
behavioral1/memory/1728-84-0x0000000002580000-0x0000000002623000-memory.dmp	family_socks5systemz
behavioral1/memory/1728-97-0x0000000002580000-0x0000000002623000-memory.dmp	family_socks5systemz
behavioral1/memory/1728-98-0x0000000002580000-0x0000000002623000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp
2660	cruisemailer.exe
1728	cruisemailer.exe

Loads dropped DLL 5 IoCs

pid	Process
2292	8f054a8b456dfbada75b7a2ef3ad7d73.exe
1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp
1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp
1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp
1228	8f054a8b456dfbada75b7a2ef3ad7d73.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	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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp
1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 1228	2292	8f054a8b456dfbada75b7a2ef3ad7d73.exe	28
PID 2292 wrote to memory of 1228	2292	8f054a8b456dfbada75b7a2ef3ad7d73.exe	28
PID 2292 wrote to memory of 1228	2292	8f054a8b456dfbada75b7a2ef3ad7d73.exe	28
PID 2292 wrote to memory of 1228	2292	8f054a8b456dfbada75b7a2ef3ad7d73.exe	28
PID 2292 wrote to memory of 1228	2292	8f054a8b456dfbada75b7a2ef3ad7d73.exe	28
PID 2292 wrote to memory of 1228	2292	8f054a8b456dfbada75b7a2ef3ad7d73.exe	28
PID 2292 wrote to memory of 1228	2292	8f054a8b456dfbada75b7a2ef3ad7d73.exe	28
PID 1228 wrote to memory of 2660	1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp	29
PID 1228 wrote to memory of 2660	1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp	29
PID 1228 wrote to memory of 2660	1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp	29
PID 1228 wrote to memory of 2660	1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp	29
PID 1228 wrote to memory of 1728	1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp	30
PID 1228 wrote to memory of 1728	1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp	30
PID 1228 wrote to memory of 1728	1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp	30
PID 1228 wrote to memory of 1728	1228	8f054a8b456dfbada75b7a2ef3ad7d73.tmp	30

C:\Users\Admin\AppData\Local\Temp\8f054a8b456dfbada75b7a2ef3ad7d73.exe
"C:\Users\Admin\AppData\Local\Temp\8f054a8b456dfbada75b7a2ef3ad7d73.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\is-2TJC1.tmp\8f054a8b456dfbada75b7a2ef3ad7d73.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-2TJC1.tmp\8f054a8b456dfbada75b7a2ef3ad7d73.tmp" /SL5="$30136,1496911,56832,C:\Users\Admin\AppData\Local\Temp\8f054a8b456dfbada75b7a2ef3ad7d73.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:1228
- - C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe
    "C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2660
- - C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe
    "C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1728

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\Cruise Mailer\cruisemailer.exe

Filesize
1.6MB

MD5
c4bcb1cfc2765eb9b90913e17bbba5fd

SHA1
43fd3aec721fd5876d82f9fd9ed193a76fad07d4

SHA256
c0dce69812cba933322e1ea93981ee942e6634322b57a7c62c0257c0d33ceafe

SHA512
f2b04c5f17e35fe0d6f716d686821e7d6d8ba2ad7771e3166f0ccaec0c99cabc6809a258abb17e8990dcc52e72642d521c8b3203fff5fbbdcf1011d2c91a1be9

Download Submit
\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe

Filesize
1.6MB

MD5
9665c577301304ffce9f16c8240e01e1

SHA1
eb0edabd89a026172b4e1d4fa8cb60ff430f6515

SHA256
c04e33877b1569cbb3a57e219949f438630c058602dd81541c71cd66bbb33498

SHA512
a6399a41971f8293c6842c82135aa80b897a4607c7c3857a93a32d7b75098a8acf87287b2f0a79c9fa3712424c3d9a9fbb141ae5ec6145bfb5aa8214f8989921

Download Submit
\Users\Admin\AppData\Local\Temp\is-2TJC1.tmp\8f054a8b456dfbada75b7a2ef3ad7d73.tmp

Filesize
690KB

MD5
1cfbe4f8e1453dde73bbda75290b5f1a

SHA1
58b6892edd5423a262adc7f60e2646422dc7a263

SHA256
6b379deda24136023d02ee39a9a6bb6071df6d6c69f6896d8296c6abe6af2edc

SHA512
d3f413d9c57cecc6487fc007ff30acc44c6fa3aa4658e14baf375bba4a2d808ac166fa5056dedc2a03b5be716e65dfb78ba9bf156759a610bca7d1ab227e455e

Download Submit
\Users\Admin\AppData\Local\Temp\is-GC3FE.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-GC3FE.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/1228-8-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/1228-42-0x00000000034B0000-0x0000000003656000-memory.dmp

Filesize
1.6MB

Download
memory/1228-56-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/1228-54-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/1728-59-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-69-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-105-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-50-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-52-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-102-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-98-0x0000000002580000-0x0000000002623000-memory.dmp

Filesize
652KB

Download
memory/1728-55-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-97-0x0000000002580000-0x0000000002623000-memory.dmp

Filesize
652KB

Download
memory/1728-96-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-60-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-63-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-66-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-93-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-72-0x0000000002580000-0x0000000002623000-memory.dmp

Filesize
652KB

Download
memory/1728-74-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-75-0x0000000002580000-0x0000000002623000-memory.dmp

Filesize
652KB

Download
memory/1728-80-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-83-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-84-0x0000000002580000-0x0000000002623000-memory.dmp

Filesize
652KB

Download
memory/1728-87-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1728-90-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2292-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2292-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2660-47-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2660-43-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2660-44-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2660-48-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download

Analysis

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