socks5systemz | 9ff154fc1fcaf2c1848caefd2d65686a424e9c083a62f844226e6dce0a896551

General

Target

file.exe
Size

3.1MB
MD5

eae068a3c8755b6534349ba95356b7ab
SHA1

5eb2f06f00013730bed4f7a44817d58d5ebae373
SHA256

9ff154fc1fcaf2c1848caefd2d65686a424e9c083a62f844226e6dce0a896551
SHA512

3f13e3d644179cbdfa31c09e86b0d316f58c18788bba9fe838035c26283aa86026997d5e6b755cae66fdcbbcd0b2e7a748dd469b84083c7aaa118b65e168561d
SSDEEP

49152:p9XE4lpGPSRcqsWlQpZ+Drkf7SSnGwwUydhcgZGtJjzqwWKlSOxkKFe5OT4wQ8u:3Xhl8PQCWlQzP7uwyPmJignxkqeOTiB

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3476-75-0x00000000006B0000-0x0000000000750000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Socks5systemz family
socks5systemz

Executes dropped EXE 2 IoCs

pid	Process
4368	file.tmp
3476	regfixfreetool.exe

Loads dropped DLL 2 IoCs

pid	Process
4368	file.tmp
3476	regfixfreetool.exe

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

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regfixfreetool.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4368	file.tmp
4368	file.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4368	file.tmp

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5856 wrote to memory of 4368	5856	file.exe	85
PID 5856 wrote to memory of 4368	5856	file.exe	85
PID 5856 wrote to memory of 4368	5856	file.exe	85
PID 4368 wrote to memory of 3476	4368	file.tmp	89
PID 4368 wrote to memory of 3476	4368	file.tmp	89
PID 4368 wrote to memory of 3476	4368	file.tmp	89

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5856
- C:\Users\Admin\AppData\Local\Temp\is-MONM1.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-MONM1.tmp\file.tmp" /SL5="$401EA,3003508,56832,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4368
- - C:\Users\Admin\AppData\Local\Registry Fix Free Tool 7.5.7\regfixfreetool.exe
    "C:\Users\Admin\AppData\Local\Registry Fix Free Tool 7.5.7\regfixfreetool.exe" -i
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:3476

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 Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Registry Fix Free Tool 7.5.7\regfixfreetool.exe

Filesize
1.8MB

MD5
292f4457a0a652e53c1913e5a72e7e44

SHA1
00bbf29dc92d3280da64f510c50a32b3a4dd9b5d

SHA256
6173fb6ea77492e97484becd25e16c62e125b1114c27a6fd111c887358b7c20d

SHA512
374a35eec2bdc9faa6d0216e2014eec1af2c8edf2ab6c8e87a67a407997732a9b37fa8becfa955186b3b66a2fdba38d3ac7b67dd0580a62c2ec88c16209bf158

Download Submit
C:\Users\Admin\AppData\Local\Registry Fix Free Tool 7.5.7\sqlite3.dll

Filesize
630KB

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2FFP0.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MONM1.tmp\file.tmp

Filesize
694KB

MD5
8d190e7ff3f5a9edcf85ad2a203c3901

SHA1
3811c60a07ec37ea20cb946a1cf9be835c14d775

SHA256
2052a5ec84ef4f4cb0692dbda5337272fd3797ac977ed14885703e11822be2bb

SHA512
af92d2655a7d6956f7883ad5b4056234ffc85402f19e8d01b76fa397ccb8c380feaf75dd5d8cc1ba3416dcdc6038fd93a7f743e9a963610730415c8a161e84f3

Download Submit
memory/3476-54-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/3476-89-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-119-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-43-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-44-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-48-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-115-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-101-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-51-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-53-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-97-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-57-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-61-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-65-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-69-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-76-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-75-0x00000000006B0000-0x0000000000750000-memory.dmp

Filesize
640KB

Download
memory/3476-81-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-85-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/3476-93-0x0000000000400000-0x00000000005DD000-memory.dmp

Filesize
1.9MB

Download
memory/4368-6-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4368-49-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/5856-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/5856-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5856-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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