socks5systemz | 55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9

General

Target

55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe
Size

1.8MB
MD5

8547adaf86a7ab657c3ae9f8fe0835fe
SHA1

4202647cf87c0263ad059f30b06b04f5d8a7e8a5
SHA256

55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9
SHA512

336b7fcc843a253fea60526aa1800160fe27969d757edc52e22d7e8e290ebaf02921d3c5c5b8435ca7da6fcc1227e5e25fa4d21b49b459394b412cf53b0cb8e9
SSDEEP

24576:CQiNPbM9CTnh3cKwuy9UkfYvqrv6vN7XJshb+bQrMeTx0dyWZlWHXl7zX:C9xM9KHgzv6vBar7xXuKX5X

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://aifbuud.ru/search/?q=67e28dd83f0fa47b1407ab4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978a271ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923b6e86f915c0ec96

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2792-74-0x00000000024C0000-0x0000000002563000-memory.dmp	family_socks5systemz
behavioral1/memory/2792-75-0x00000000024C0000-0x0000000002563000-memory.dmp	family_socks5systemz
behavioral1/memory/2792-87-0x00000000024C0000-0x0000000002563000-memory.dmp	family_socks5systemz

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

Detects executables packed with VMProtect. 20 IoCs

resource	yara_rule
behavioral1/memory/2708-44-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2708-47-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2708-48-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-52-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-55-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-59-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-60-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-63-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-64-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-67-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-70-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-73-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-81-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-84-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-88-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-91-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-94-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-97-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-101-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2792-104-0x0000000000400000-0x00000000005A2000-memory.dmp	INDICATOR_EXE_Packed_VMProtect

Executes dropped EXE 3 IoCs

pid	Process
2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp
2708	cruisemailer.exe
2792	cruisemailer.exe

Loads dropped DLL 5 IoCs

pid	Process
460	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe
2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp
2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp
2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp
2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.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
2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp
2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 460 wrote to memory of 2064	460	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe	28
PID 460 wrote to memory of 2064	460	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe	28
PID 460 wrote to memory of 2064	460	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe	28
PID 460 wrote to memory of 2064	460	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe	28
PID 460 wrote to memory of 2064	460	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe	28
PID 460 wrote to memory of 2064	460	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe	28
PID 460 wrote to memory of 2064	460	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe	28
PID 2064 wrote to memory of 2708	2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp	29
PID 2064 wrote to memory of 2708	2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp	29
PID 2064 wrote to memory of 2708	2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp	29
PID 2064 wrote to memory of 2708	2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp	29
PID 2064 wrote to memory of 2792	2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp	30
PID 2064 wrote to memory of 2792	2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp	30
PID 2064 wrote to memory of 2792	2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp	30
PID 2064 wrote to memory of 2792	2064	55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp	30

C:\Users\Admin\AppData\Local\Temp\55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe
"C:\Users\Admin\AppData\Local\Temp\55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:460
- C:\Users\Admin\AppData\Local\Temp\is-0TV3K.tmp\55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-0TV3K.tmp\55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp" /SL5="$70122,1513159,56832,C:\Users\Admin\AppData\Local\Temp\55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2064
- - C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe
    "C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2708
- - C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe
    "C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2792

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
1.2MB

MD5
77b06e27363fca2cd795ef8621199878

SHA1
3621652b2472e83c713de251217b48888a441584

SHA256
f1d4f41487dc5b5b9288867afb1328a76c8a25151962ee5c69236c94d2846917

SHA512
e122842afe31426c1f1327fd0614add6ea8f73ffaee240887deb019772558dd01bf6a9b21bb85f58c88686f0b69d6b1eb2404089e05c2a5759df490133549554

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

Filesize
1.6MB

MD5
93bcb34ff41fb9302a3dbf3f7a759ee2

SHA1
ad2ca7aa6f8f486675ab7dfff69623a88c67ca05

SHA256
24ae78f8f8979e1dff2d42757bd4c6de9f82e58e5f95758b469d47de28a5306e

SHA512
bd9ef77bf8cb6d953f99ad45cf399e2cccf0286c4c185a59b6008841f59f05088314c8370cd388079907105c9dbc4a49eb3267664657815973b36da552400c78

Download Submit
\Users\Admin\AppData\Local\Temp\is-0TV3K.tmp\55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9.tmp

Filesize
690KB

MD5
87041e1189809c2e27890dcacfb5f12b

SHA1
0692e4718bfbadd453ed7d7e2b1337993ad97ba5

SHA256
447741a1ef3c1892a69ca7375da921ba39cabcb225cf82e26d5af69d54864086

SHA512
705abf93f24423ef3b12f4a677509ffe14ab4deea6974e56cd59ceaf9bdb8483f2ee393d0a33f8828240227b2c847d45d5153cf3663b14de4bf1826b743f8013

Download Submit
\Users\Admin\AppData\Local\Temp\is-2013U.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-2013U.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/460-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/460-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2064-42-0x0000000003220000-0x00000000033C2000-memory.dmp

Filesize
1.6MB

Download
memory/2064-54-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2064-56-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/2064-8-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/2708-44-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2708-47-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2708-48-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2708-43-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-59-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-75-0x00000000024C0000-0x0000000002563000-memory.dmp

Filesize
652KB

Download
memory/2792-52-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-50-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-60-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-63-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-64-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-67-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-70-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-73-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-74-0x00000000024C0000-0x0000000002563000-memory.dmp

Filesize
652KB

Download
memory/2792-55-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-81-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-84-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-87-0x00000000024C0000-0x0000000002563000-memory.dmp

Filesize
652KB

Download
memory/2792-88-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-91-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-94-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-97-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-101-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download
memory/2792-104-0x0000000000400000-0x00000000005A2000-memory.dmp

Filesize
1.6MB

Download

Analysis

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