socks5systemz | 08e99c84eae02bcadf577873cf34b6f87b718d83b9c8721e849888425ed9450d

General

Target

tuc5.exe
Size

4.5MB
MD5

fd82388cccd686f54503bc41929b39b8
SHA1

24fd01b0318aaf739b204a456e5f64a19c271e6d
SHA256

08e99c84eae02bcadf577873cf34b6f87b718d83b9c8721e849888425ed9450d
SHA512

ca5924175338b1741ff79135dbab883403ffd03012cd7914ac173f778159e99c11c115cdad3b085aa67eb9b9136ff9c76cd5a8775f9abc3c35524468a2242c59
SSDEEP

98304:QHfMnRjsJoLAX5/0LUlwSL/9gv+7AaIk4dm8:ts6MX5fwSSN24dD

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4800-162-0x00000000007F0000-0x0000000000892000-memory.dmp	family_socks5systemz
behavioral2/memory/4800-172-0x00000000007F0000-0x0000000000892000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2760	tuc5.tmp
1252	pip-master-std-lib.exe
4800	pip-master-std-lib.exe

Loads dropped DLL 3 IoCs

pid	Process
2760	tuc5.tmp
2760	tuc5.tmp
2760	tuc5.tmp

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
Runs net.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2760	tuc5.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 2760	540	tuc5.exe	89
PID 540 wrote to memory of 2760	540	tuc5.exe	89
PID 540 wrote to memory of 2760	540	tuc5.exe	89
PID 2760 wrote to memory of 4996	2760	tuc5.tmp	95
PID 2760 wrote to memory of 4996	2760	tuc5.tmp	95
PID 2760 wrote to memory of 4996	2760	tuc5.tmp	95
PID 2760 wrote to memory of 1252	2760	tuc5.tmp	96
PID 2760 wrote to memory of 1252	2760	tuc5.tmp	96
PID 2760 wrote to memory of 1252	2760	tuc5.tmp	96
PID 4996 wrote to memory of 1816	4996	net.exe	98
PID 4996 wrote to memory of 1816	4996	net.exe	98
PID 4996 wrote to memory of 1816	4996	net.exe	98
PID 2760 wrote to memory of 4800	2760	tuc5.tmp	99
PID 2760 wrote to memory of 4800	2760	tuc5.tmp	99
PID 2760 wrote to memory of 4800	2760	tuc5.tmp	99

C:\Users\Admin\AppData\Local\Temp\tuc5.exe
"C:\Users\Admin\AppData\Local\Temp\tuc5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:540
- C:\Users\Admin\AppData\Local\Temp\is-4ORLD.tmp\tuc5.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-4ORLD.tmp\tuc5.tmp" /SL5="$601D4,4463661,54272,C:\Users\Admin\AppData\Local\Temp\tuc5.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 153
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4996
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 153
      4⤵
      PID:1816
- - C:\Users\Admin\AppData\Local\PIP Master std lib\pip-master-std-lib.exe
    "C:\Users\Admin\AppData\Local\PIP Master std lib\pip-master-std-lib.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1252
- - C:\Users\Admin\AppData\Local\PIP Master std lib\pip-master-std-lib.exe
    "C:\Users\Admin\AppData\Local\PIP Master std lib\pip-master-std-lib.exe" -s
    3⤵
    - Executes dropped EXE
    PID:4800

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\PIP Master std lib\pip-master-std-lib.exe

Filesize
1.2MB

MD5
4ea306efb159e6c255d6a7af1e066e3d

SHA1
f5210092ba273e38c3ed39d0bde5762d8d433dbf

SHA256
c04fe51d2dd90c9b08665ea731c543cbf0a321fa8fffbd999afe4834221759b7

SHA512
0eec3fb9c88f058e492ca18bdf2e15d6f407cf41bade3d231b54c0ea0302bfa1fc2cfed1cb5bea9d3cf155cc10b5fc723173abe28afeddb65a7661cc033b1e67

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4ORLD.tmp\tuc5.tmp

Filesize
688KB

MD5
a7662827ecaeb4fc68334f6b8791b917

SHA1
f93151dd228d680aa2910280e51f0a84d0cad105

SHA256
05f159722d6905719d2d6f340981a293f40ab8a0d2d4a282c948066809d4af6d

SHA512
e9880b3f3ec9201e59114850e9c570d0ad6d3b0e04c60929a03cf983c62c505fcb6bb9dc3adeee88c78d43bd484159626b4a2f000a34b8883164c263f21e6f4a

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6TO14.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6TO14.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

Download Submit
memory/540-27-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/540-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/540-7-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/540-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1252-136-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/1252-130-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/1252-131-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/1252-135-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/2760-26-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2760-10-0x0000000002240000-0x0000000002241000-memory.dmp

Filesize
4KB

Download
memory/2760-129-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2760-8-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2760-139-0x0000000002240000-0x0000000002241000-memory.dmp

Filesize
4KB

Download
memory/4800-146-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-159-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-140-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-147-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-150-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-153-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-156-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-143-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-162-0x00000000007F0000-0x0000000000892000-memory.dmp

Filesize
648KB

Download
memory/4800-166-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-169-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-172-0x00000000007F0000-0x0000000000892000-memory.dmp

Filesize
648KB

Download
memory/4800-173-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download
memory/4800-176-0x0000000000400000-0x0000000000538000-memory.dmp

Filesize
1.2MB

Download

Analysis

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