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

csgftkp.net

http://csgftkp.net/search/?q=67e28dd83a5ca421460bad497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a371ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923f658cf812c3ee96

http://csgftkp.net/search/?q=67e28dd83a5ca421460bad497c27d78406abdd88be4b12eab517aa5c96bd86ef97834c875a8bbc896c58e713bc90c91936b5281fc235a925ed3e00d6bd974a95129070b616e96cc92be20ea778c255bbe258b90d3b4eed3233d1626a8ff815c2ed929938cc6c

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2840-74-0x0000000002680000-0x0000000002722000-memory.dmp	family_socks5systemz
behavioral1/memory/2840-96-0x0000000002680000-0x0000000002722000-memory.dmp	family_socks5systemz
behavioral1/memory/2840-97-0x0000000002680000-0x0000000002722000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp
2588	soundvolume.exe
2840	soundvolume.exe

Loads dropped DLL 5 IoCs

pid	Process
2180	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe
2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp
2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp
2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp
2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.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	flow	ioc	pid	Process
Destination IP	2	45.155.250.90	2840	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
2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 2688	2180	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe	30
PID 2180 wrote to memory of 2688	2180	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe	30
PID 2180 wrote to memory of 2688	2180	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe	30
PID 2180 wrote to memory of 2688	2180	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe	30
PID 2180 wrote to memory of 2688	2180	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe	30
PID 2180 wrote to memory of 2688	2180	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe	30
PID 2180 wrote to memory of 2688	2180	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe	30
PID 2688 wrote to memory of 2588	2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	31
PID 2688 wrote to memory of 2588	2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	31
PID 2688 wrote to memory of 2588	2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	31
PID 2688 wrote to memory of 2588	2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	31
PID 2688 wrote to memory of 2840	2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	32
PID 2688 wrote to memory of 2840	2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	32
PID 2688 wrote to memory of 2840	2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	32
PID 2688 wrote to memory of 2840	2688	6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp	32

C:\Users\Admin\AppData\Local\Temp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe
"C:\Users\Admin\AppData\Local\Temp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Local\Temp\is-0RTDE.tmp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-0RTDE.tmp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp" /SL5="$5014E,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:2688
- - 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:2588
- - 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:2840

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

\Users\Admin\AppData\Local\Sound Volume\soundvolume.exe

Filesize
2.9MB

MD5
9b1bb276de9a2aa17413a2b0ccd9e919

SHA1
1e36c88a0c47b119cf7a866ef5e2fc96126b2cf8

SHA256
75bdd6c3dd9456bda10f35dea57239505cc1465bc3218bf02f1619a63a4eee0d

SHA512
4ad9819045c07b102ddeff7978120be69464727337440873706786209568a3a27862b6d05f2c178f00e5491bff57d16f3d85db8f3adbc1b42c3e0cf5beaa7651

Download Submit
\Users\Admin\AppData\Local\Temp\is-0RTDE.tmp\6b251b357a4ff2ff8fc367c082918f11872bcfc6ba6b69059c0d876de53337a7.tmp

Filesize
680KB

MD5
6e8a6870c7b7cca7857274c12319be79

SHA1
670cb59240dcf402572bac9afa413530f4126248

SHA256
18b2e6e055099ecdee8aa2cdca0d19d18bb3bb0f6db8725cf0fc0d39f95813fc

SHA512
8f4dd62e1b8be2dd4b3178f7267c7898c26e2466826c93eaff817fc0b08d926671e2e620fb341516d72b90b2519710e8b6354afccf2c777d7148cae8e521a037

Download Submit
\Users\Admin\AppData\Local\Temp\is-9E0FK.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-9E0FK.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/2180-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2180-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2180-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2588-46-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2588-45-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2588-49-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2688-44-0x0000000003470000-0x000000000374D000-memory.dmp

Filesize
2.9MB

Download
memory/2688-9-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2688-53-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2688-54-0x0000000003470000-0x000000000374D000-memory.dmp

Filesize
2.9MB

Download
memory/2840-58-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-80-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-51-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-61-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-64-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-67-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-70-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-73-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-74-0x0000000002680000-0x0000000002722000-memory.dmp

Filesize
648KB

Download
memory/2840-57-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-83-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-86-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-89-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-92-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-95-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-96-0x0000000002680000-0x0000000002722000-memory.dmp

Filesize
648KB

Download
memory/2840-97-0x0000000002680000-0x0000000002722000-memory.dmp

Filesize
648KB

Download
memory/2840-101-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download
memory/2840-104-0x0000000000400000-0x00000000006DD000-memory.dmp

Filesize
2.9MB

Download

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