socks5systemz | 3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399

Analysis

max time kernel
300s
max time network
250s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
04/02/2024, 03:37

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General

Target

3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe
Size

3.4MB
MD5

cecde978f0dcdc5b3f713282e6f2c2f8
SHA1

4d9cf78b1ad338bfd367cf4cb22555c44599d411
SHA256

3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399
SHA512

c3057c6a1f0c8d188f2e89ab1c14caff85acb91eb6a7e7231615141d241414dd6b4d7688889acae368721bf5613613ef7ffc875b95de25fbc8d40d5a4fe8aca2
SSDEEP

49152:a2r5FA7K1OopyYq0JunYOfFy0PzqIZG9p6zM7ikvPURaH3XE4hX86tGoWrrKUTdq:7r52zY40My0bAHvsAH//Wrf/kDd

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

Attributes

rc4_key
i4hiea56#7b&dfw3

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2568-95-0x0000000002B70000-0x0000000002C1D000-memory.dmp	family_socks5systemz
behavioral1/memory/2568-94-0x0000000002B70000-0x0000000002C1D000-memory.dmp	family_socks5systemz
behavioral1/memory/2568-104-0x0000000002B70000-0x0000000002C1D000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
2696	VolumeUTIL.exe
2568	VolumeUTIL.exe

Loads dropped DLL 6 IoCs

pid	Process
1972	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe
948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.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	ioc
Destination IP	81.31.197.38

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

Drops file in Program Files directory 19 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\VolumeUTIL\unins000.dat	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-9IIM7.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-N6R3M.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-6QVOM.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-U02S8.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-CQIQ6.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-689IN.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-BR7IV.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\UIText\is-6SO36.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\unins000.dat	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-KKOC2.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-M3SR2.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-D2ESM.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\UIText\is-SDOQR.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-N0JVI.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-3H42T.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-C625E.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File opened for modification	C:\Program Files (x86)\Common Files\VolumeUTIL\VolumeUTIL.exe	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
File created	C:\Program Files (x86)\Common Files\VolumeUTIL\is-D2V2I.tmp	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp

Runs net.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 948	1972	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe	28
PID 1972 wrote to memory of 948	1972	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe	28
PID 1972 wrote to memory of 948	1972	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe	28
PID 1972 wrote to memory of 948	1972	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe	28
PID 1972 wrote to memory of 948	1972	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe	28
PID 1972 wrote to memory of 948	1972	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe	28
PID 1972 wrote to memory of 948	1972	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe	28
PID 948 wrote to memory of 2584	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	29
PID 948 wrote to memory of 2584	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	29
PID 948 wrote to memory of 2584	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	29
PID 948 wrote to memory of 2584	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	29
PID 948 wrote to memory of 2696	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	30
PID 948 wrote to memory of 2696	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	30
PID 948 wrote to memory of 2696	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	30
PID 948 wrote to memory of 2696	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	30
PID 948 wrote to memory of 2472	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	34
PID 948 wrote to memory of 2472	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	34
PID 948 wrote to memory of 2472	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	34
PID 948 wrote to memory of 2472	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	34
PID 948 wrote to memory of 2568	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	32
PID 948 wrote to memory of 2568	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	32
PID 948 wrote to memory of 2568	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	32
PID 948 wrote to memory of 2568	948	3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp	32
PID 2472 wrote to memory of 2544	2472	net.exe	35
PID 2472 wrote to memory of 2544	2472	net.exe	35
PID 2472 wrote to memory of 2544	2472	net.exe	35
PID 2472 wrote to memory of 2544	2472	net.exe	35

C:\Users\Admin\AppData\Local\Temp\3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe
"C:\Users\Admin\AppData\Local\Temp\3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Users\Admin\AppData\Local\Temp\is-U9SVK.tmp\3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-U9SVK.tmp\3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp" /SL5="$4014E,3304892,54272,C:\Users\Admin\AppData\Local\Temp\3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:948
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /Query
    3⤵
    PID:2584
- - C:\Program Files (x86)\Common Files\VolumeUTIL\VolumeUTIL.exe
    "C:\Program Files (x86)\Common Files\VolumeUTIL\VolumeUTIL.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2696
- - C:\Program Files (x86)\Common Files\VolumeUTIL\VolumeUTIL.exe
    "C:\Program Files (x86)\Common Files\VolumeUTIL\VolumeUTIL.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2568
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 29
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2472
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 29
      4⤵
      PID:2544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Common Files\VolumeUTIL\VolumeUTIL.exe

Filesize
1.5MB

MD5
4853d3bd83f7a6ce511ad61d3e00218b

SHA1
6d13c8e11308db32acfab565407e043a46a424ef

SHA256
c8c087eeb9a417bf8a88612f048d5d9ae6f55717713f5058252edf78faf17dda

SHA512
1e0ef797f52cc867ffc19874494eeafca8511a83af3f6d337fd444f2a83a50799662a065d5b233bcf0db2b6b6a432250632102f1e55577e651ffddea7722af86

Download Submit
C:\Program Files (x86)\Common Files\VolumeUTIL\VolumeUTIL.exe

Filesize
541KB

MD5
ef7cdf295df7d1f2daf5ccb6ece17fce

SHA1
b2a7830cec0da6d88eafc11fcf36ae5466ce9e6c

SHA256
75b812cb5a824254458789b17517f13df4d6855e198c31834bf94b7a26196364

SHA512
70d0de2c270047ec26984397deff450b8edcc981ddb8aea319de15bedf694470851f963a5f82bff73676559878d2c465ac8129446ab1f857f43fbfafa9f65167

Download Submit
C:\Program Files (x86)\Common Files\VolumeUTIL\VolumeUTIL.exe

Filesize
703KB

MD5
327a7a843d449af31d93c6b94063a7b5

SHA1
edcabc6def5650c632e861de2b94a4543a793f4f

SHA256
602cfb614d4aebfad307523bc68dd8740358e9223ca55a16804031e66416a404

SHA512
7f1869644c365fd00cbcb60b22574d53ca807825db61ae5aa08da1a2e753e8e18e680e9b8d21c327120842d619fd927b3368abafd3e201bc36f6ce433696a770

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-U9SVK.tmp\3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp

Filesize
694KB

MD5
5525670a9e72d77b368a9aa4b8c814c1

SHA1
3fdad952ea00175f3a6e549b5dca4f568e394612

SHA256
1180706added2a7899f08f25a9f88ecff5d003ba8964f918d00779565e4a6978

SHA512
757249f7e67f82522a8e3079a22c5cf92111626446a32ad3ef876f23885f62d1bb5bf3238d564e23531d062fe18742568dfc00e33b049bb8eef05eb953ef981a

Download Submit
\Program Files (x86)\Common Files\VolumeUTIL\VolumeUTIL.exe

Filesize
1.3MB

MD5
6e15db36fd6339866fab14d4cb3e6dee

SHA1
adad0dea33b3b2e28acffc0a105c1ff3a241fea0

SHA256
430efb495841b82f4ee9f4d31508fc158f816ee029b8bf6142b8f922c51ca11f

SHA512
56a3a0f5bc2d4f340df29e64e67753c9f972fa92b8f4d570f4f9df8e3cab30ec9782e1c427325bdb6a17ca1518bb1a2b05cda2cd26ac3e4e379cd3db5afb8ff9

Download Submit
\Users\Admin\AppData\Local\Temp\is-KLB57.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-KLB57.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

Download Submit
\Users\Admin\AppData\Local\Temp\is-KLB57.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-U9SVK.tmp\3a6de4dba9cf77206041fcac9b530dda05586318599fcca28e621e0bc1855399.tmp

Filesize
682KB

MD5
dea35496a193249d0a4f2b71af5905af

SHA1
fc5ac157bc80c7d2f47eb6861d71806d7856f216

SHA256
4c891296c741e092c3cdf64caff3f889b1910683c6fa505a89fde4eb1545878c

SHA512
e5f1cdc8c121c2315e602a38a389db5b9b6d3d4fce574d4b7818edc0c8502859415625374435c91a677342d26d8e19ec156ea62ecd0cd15281757c1fa86d6465

Download Submit
memory/948-9-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/948-62-0x0000000003190000-0x000000000347D000-memory.dmp

Filesize
2.9MB

Download
memory/948-76-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/948-74-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/1972-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1972-73-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2568-79-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-94-0x0000000002B70000-0x0000000002C1D000-memory.dmp

Filesize
692KB

Download
memory/2568-72-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-140-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-135-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-75-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-132-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-129-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-80-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-81-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-84-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-87-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-90-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-93-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-95-0x0000000002B70000-0x0000000002C1D000-memory.dmp

Filesize
692KB

Download
memory/2568-70-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-100-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-103-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-104-0x0000000002B70000-0x0000000002C1D000-memory.dmp

Filesize
692KB

Download
memory/2568-107-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-110-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-113-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-116-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-120-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-123-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2568-126-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2696-63-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2696-67-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2696-64-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download
memory/2696-68-0x0000000000400000-0x00000000006ED000-memory.dmp

Filesize
2.9MB

Download