socks5systemz | 6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7

General

Target

6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe
Size

4.0MB
MD5

a83fa5bb02751dbfa327f9ab06dca6df
SHA1

f16ae580b52c611b0666f26a27f2027b111ee181
SHA256

6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7
SHA512

4a8e582439deedac82ff5dce0737b55a5d5b4e870a9683a7879c58602777d76fb84a34b3d5c062e71cdfeaccbe1b3fa125e6f803dfb7be1dac0efea70b44f4b6
SSDEEP

98304:CjOPRTI3Nar3fLobbeVfnGkSVqDWmbnsazR/7/qKwPLBzI21xQxE:DNIe3k/eVvGxUDdZ/q1LBMOxQG

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

buoihlp.com

http://buoihlp.com/search/?q=67e28dd86b5bf57d470baa197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608afd13c7ed9d9c38

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2492-69-0x0000000000990000-0x0000000000A32000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
4244	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp
5056	soundvolume.exe
2492	soundvolume.exe

Loads dropped DLL 1 IoCs

pid	Process
4244	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp

Unexpected DNS network traffic destination 3 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	flow	ioc	pid	Process
Destination IP	46	152.89.198.214	2492	soundvolume.exe
Destination IP	47	91.211.247.248	2492	soundvolume.exe
Destination IP	44	152.89.198.214	2492	soundvolume.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	soundvolume.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	soundvolume.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4244	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3892 wrote to memory of 4244	3892	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe	88
PID 3892 wrote to memory of 4244	3892	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe	88
PID 3892 wrote to memory of 4244	3892	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe	88
PID 4244 wrote to memory of 5056	4244	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	90
PID 4244 wrote to memory of 5056	4244	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	90
PID 4244 wrote to memory of 5056	4244	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	90
PID 4244 wrote to memory of 2492	4244	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	91
PID 4244 wrote to memory of 2492	4244	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	91
PID 4244 wrote to memory of 2492	4244	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	91

C:\Users\Admin\AppData\Local\Temp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe
"C:\Users\Admin\AppData\Local\Temp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3892
- C:\Users\Admin\AppData\Local\Temp\is-BB678.tmp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-BB678.tmp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp" /SL5="$500D8,3847643,54272,C:\Users\Admin\AppData\Local\Temp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4244
- - C:\Users\Admin\AppData\Local\Sound Volume\soundvolume.exe
    "C:\Users\Admin\AppData\Local\Sound Volume\soundvolume.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5056
- - C:\Users\Admin\AppData\Local\Sound Volume\soundvolume.exe
    "C:\Users\Admin\AppData\Local\Sound Volume\soundvolume.exe" -s
    3⤵
    - Executes dropped EXE
    - Unexpected DNS network traffic destination
    - System Location Discovery: System Language Discovery
    PID:2492

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 Information Discovery

1

T1082

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\Sound Volume\soundvolume.exe

Filesize
2.9MB

MD5
9b1bb276de9a2aa17413a2b0ccd9e919

SHA1
1e36c88a0c47b119cf7a866ef5e2fc96126b2cf8

SHA256
75bdd6c3dd9456bda10f35dea57239505cc1465bc3218bf02f1619a63a4eee0d

SHA512
4ad9819045c07b102ddeff7978120be69464727337440873706786209568a3a27862b6d05f2c178f00e5491bff57d16f3d85db8f3adbc1b42c3e0cf5beaa7651

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7VUEE.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-BB678.tmp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp

Filesize
680KB

MD5
6e8a6870c7b7cca7857274c12319be79

SHA1
670cb59240dcf402572bac9afa413530f4126248

SHA256
18b2e6e055099ecdee8aa2cdca0d19d18bb3bb0f6db8725cf0fc0d39f95813fc

SHA512
8f4dd62e1b8be2dd4b3178f7267c7898c26e2466826c93eaff817fc0b08d926671e2e620fb341516d72b90b2519710e8b6354afccf2c777d7148cae8e521a037

Download Submit
memory/2492-59-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-88-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-113-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-110-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-107-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-48-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-104-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-101-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-97-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-94-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-52-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-53-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-56-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-91-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-62-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-70-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-76-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-69-0x0000000000990000-0x0000000000A32000-memory.dmp

Filesize
648KB

Download
memory/2492-65-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-79-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-82-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2492-85-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/3892-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3892-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3892-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4244-49-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4244-7-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/5056-40-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/5056-45-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/5056-44-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/5056-39-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download

Analysis

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