socks5systemz | 4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908

General

Target

4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe
Size

4.6MB
MD5

fe66c90bd49fccdfa728154d9b96d029
SHA1

2ba17f5c566eacfe44228ac53c794b0e11c6cb5b
SHA256

4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908
SHA512

4d0518418b087a123a727774804ba9c50ab08120382a1ebfb55b4b517cd2ed9d3fa17a8e90e690952008192c618fc2becbae16850e20ac5160840b0776d2a8c5
SSDEEP

98304:NlAF1hJxiW172zRGwIuE3eDRinLW0KIjdeeoyAYj8ZFGadVb:IF1PaHuSRiCkd5PYGaD

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2708-105-0x0000000002FF0000-0x0000000003092000-memory.dmp	family_socks5systemz
behavioral1/memory/2708-133-0x0000000002FF0000-0x0000000003092000-memory.dmp	family_socks5systemz
behavioral1/memory/2708-134-0x0000000002FF0000-0x0000000003092000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp
2708	screenstudio32.exe

Loads dropped DLL 6 IoCs

pid	Process
2316	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe
2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp
2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp
2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp
2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp
2708	screenstudio32.exe

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

System Location Discovery: System Language Discovery 1 TTPs 5 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	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	screenstudio32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp
2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2944	2316	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe	31
PID 2316 wrote to memory of 2944	2316	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe	31
PID 2316 wrote to memory of 2944	2316	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe	31
PID 2316 wrote to memory of 2944	2316	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe	31
PID 2316 wrote to memory of 2944	2316	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe	31
PID 2316 wrote to memory of 2944	2316	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe	31
PID 2316 wrote to memory of 2944	2316	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe	31
PID 2944 wrote to memory of 2552	2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp	32
PID 2944 wrote to memory of 2552	2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp	32
PID 2944 wrote to memory of 2552	2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp	32
PID 2944 wrote to memory of 2552	2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp	32
PID 2944 wrote to memory of 2708	2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp	34
PID 2944 wrote to memory of 2708	2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp	34
PID 2944 wrote to memory of 2708	2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp	34
PID 2944 wrote to memory of 2708	2944	4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp	34
PID 2552 wrote to memory of 2568	2552	net.exe	35
PID 2552 wrote to memory of 2568	2552	net.exe	35
PID 2552 wrote to memory of 2568	2552	net.exe	35
PID 2552 wrote to memory of 2568	2552	net.exe	35

C:\Users\Admin\AppData\Local\Temp\4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe
"C:\Users\Admin\AppData\Local\Temp\4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Users\Admin\AppData\Local\Temp\is-KHSQK.tmp\4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-KHSQK.tmp\4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp" /SL5="$30150,4564320,54272,C:\Users\Admin\AppData\Local\Temp\4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.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:2944
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" pause screenstudio_11173
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2552
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 pause screenstudio_11173
      4⤵
      System Location Discovery: System Language Discovery
      PID:2568
- - C:\Users\Admin\AppData\Local\Screen Studio 1.37\screenstudio32.exe
    "C:\Users\Admin\AppData\Local\Screen Studio 1.37\screenstudio32.exe" -i
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:2708

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\Screen Studio 1.37\sqlite3.dll

Filesize
630KB

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
\Users\Admin\AppData\Local\Screen Studio 1.37\screenstudio32.exe

Filesize
2.9MB

MD5
21d729ae574d1b99b99e2c04adea1c59

SHA1
b0b82bbf3432e3070a553fa698b03e23e128b619

SHA256
cb00575f2f0d24c3bf711e508a946c5cc10937396a2e205dc7cba8768c3de375

SHA512
47cbd239039f560af92bf2d45f7c1fe5e11f29073e5b3ee1f250b2cc41c9c0d87d96b90197cb1304084eaeaf337d5a6dd3099608cc4d46ad2529b92ad6d3faa7

Download Submit
\Users\Admin\AppData\Local\Temp\is-H2CPP.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-H2CPP.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-KHSQK.tmp\4f300332b4eb7a547751af1730c5151867c4b1cb24147acfa98fff9a8e58b908.tmp

Filesize
692KB

MD5
f7f130efb54abb503449f78505828b21

SHA1
ba00890c451a9adc101aa1b48610130583ae15a4

SHA256
58e1b33207fe98378d844952e4aae9759ff6d7c5a25436eeb703c84b820bcea7

SHA512
83682d485d427192b3de98f374596d0bafb584a319728a5448ee7ebbf50dc5bb90d8573d7de443f1f4e2332814fc19f71d669fecc5946734afcebb225b84f39f

Download Submit
memory/2316-80-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2316-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2316-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2708-87-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-99-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-74-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-142-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-138-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-72-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-84-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-83-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/2708-134-0x0000000002FF0000-0x0000000003092000-memory.dmp

Filesize
648KB

Download
memory/2708-91-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-95-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-133-0x0000000002FF0000-0x0000000003092000-memory.dmp

Filesize
648KB

Download
memory/2708-103-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-105-0x0000000002FF0000-0x0000000003092000-memory.dmp

Filesize
648KB

Download
memory/2708-111-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-115-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-119-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-123-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-127-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2708-131-0x0000000000400000-0x00000000006F8000-memory.dmp

Filesize
3.0MB

Download
memory/2944-69-0x0000000003C70000-0x0000000003F68000-memory.dmp

Filesize
3.0MB

Download
memory/2944-11-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2944-79-0x0000000003C70000-0x0000000003F68000-memory.dmp

Filesize
3.0MB

Download
memory/2944-78-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download

Analysis

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