socks5systemz | ed707049234c4794563e0232662dfa73978a532cdaf08beb3b6fc0db0e1b2b08

General

Target

412b93a1f6f91b331774d5f3a5e04722.exe
Size

3.9MB
MD5

412b93a1f6f91b331774d5f3a5e04722
SHA1

4af3037ed7bedc7c07d75fa93d5fb9369351466e
SHA256

ed707049234c4794563e0232662dfa73978a532cdaf08beb3b6fc0db0e1b2b08
SHA512

f1f1650b28fe59be5ca965a24ea922d88212bdb6b78f75358f7a62a1f341b9d02933d1e5cb5050104cfe84392c54dfd8646f04a6a91d4b58618731891b3ba05c
SSDEEP

98304:ChZhES6/LCPctbw2sStNDyRCtNaxqDZxjXD8m6K8:eES6DJtb3tcKJDbjT8m6b

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://dtygnwz.info/search/?q=67e28dd8655aa729110daa1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffd17c5ec96993c

http://dtygnwz.info/search/?q=67e28dd8655aa729110daa1b7c27d78406abdd88be4b12eab517aa5c96bd86e89d8e4f96148ab2865b77f80ebad9c40f7cb63037ed2ab423a4624383ba915d911ec07bb606a0708727e40ea678c45abbe74ffb0e2807e12571c17f3e83fe16c1ed939f38ce6c91

Signatures

Detect Socks5Systemz Payload 5 IoCs

resource	yara_rule
behavioral2/memory/2496-69-0x00000000009B0000-0x0000000000A52000-memory.dmp	family_socks5systemz
behavioral2/memory/2496-70-0x00000000009B0000-0x0000000000A52000-memory.dmp	family_socks5systemz
behavioral2/memory/2496-80-0x00000000009B0000-0x0000000000A52000-memory.dmp	family_socks5systemz
behavioral2/memory/2496-93-0x00000000009B0000-0x0000000000A52000-memory.dmp	family_socks5systemz
behavioral2/memory/2496-94-0x00000000009B0000-0x0000000000A52000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2272	412b93a1f6f91b331774d5f3a5e04722.tmp
2208	sunvox.exe
2496	sunvox.exe

Loads dropped DLL 1 IoCs

pid	Process
2272	412b93a1f6f91b331774d5f3a5e04722.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	141.98.234.31

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

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 2272	1976	412b93a1f6f91b331774d5f3a5e04722.exe	92
PID 1976 wrote to memory of 2272	1976	412b93a1f6f91b331774d5f3a5e04722.exe	92
PID 1976 wrote to memory of 2272	1976	412b93a1f6f91b331774d5f3a5e04722.exe	92
PID 2272 wrote to memory of 2208	2272	412b93a1f6f91b331774d5f3a5e04722.tmp	95
PID 2272 wrote to memory of 2208	2272	412b93a1f6f91b331774d5f3a5e04722.tmp	95
PID 2272 wrote to memory of 2208	2272	412b93a1f6f91b331774d5f3a5e04722.tmp	95
PID 2272 wrote to memory of 2496	2272	412b93a1f6f91b331774d5f3a5e04722.tmp	96
PID 2272 wrote to memory of 2496	2272	412b93a1f6f91b331774d5f3a5e04722.tmp	96
PID 2272 wrote to memory of 2496	2272	412b93a1f6f91b331774d5f3a5e04722.tmp	96

C:\Users\Admin\AppData\Local\Temp\412b93a1f6f91b331774d5f3a5e04722.exe
"C:\Users\Admin\AppData\Local\Temp\412b93a1f6f91b331774d5f3a5e04722.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\is-NJ8HI.tmp\412b93a1f6f91b331774d5f3a5e04722.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-NJ8HI.tmp\412b93a1f6f91b331774d5f3a5e04722.tmp" /SL5="$8011E,3706011,54272,C:\Users\Admin\AppData\Local\Temp\412b93a1f6f91b331774d5f3a5e04722.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2272
- - C:\Users\Admin\AppData\Local\Sun Vox\sunvox.exe
    "C:\Users\Admin\AppData\Local\Sun Vox\sunvox.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2208
- - C:\Users\Admin\AppData\Local\Sun Vox\sunvox.exe
    "C:\Users\Admin\AppData\Local\Sun Vox\sunvox.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2496

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3488 --field-trial-handle=2228,i,521073434451423547,2311651514500527526,262144 --variations-seed-version /prefetch:8
1⤵
PID:4036

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Sun Vox\sunvox.exe

Filesize
2.9MB

MD5
034eedf0e338381cc21515606426b59d

SHA1
f62943abc769d0f92914801e3243268d1d0eedd9

SHA256
c061ffd2b068c9cd58c1919c4c6d3f0f42c1521b14ce2d94c8f9eb34aefc8b62

SHA512
0a88ee699e4295bc0e5fd8e639fdcba5c931c7444c984339a225462157db07aa593d843efb68b53bcf69858e45e2724736be92cc9a8cd8cebd055d6c46af29f2

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-0BHJR.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-NJ8HI.tmp\412b93a1f6f91b331774d5f3a5e04722.tmp

Filesize
680KB

MD5
cfc3dc1faa46b9a5e3136e0af237c612

SHA1
9c48427a6629fa547eebbbe19955714ededfbd6c

SHA256
a67eab19df530cc412391f37e453d12cacb4a767534e2c9fa8b619b36a7f012c

SHA512
637de9098986b0e95b2401d6703f197cebe5f644b3b3bec2224f1b6b30137b6f7bc87195f2be3a0e0181b24abe4b509f04e02c62dc24ede22f9bdfdd3bd527a6

Download Submit
memory/1976-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1976-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2208-39-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2208-40-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2208-43-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2208-44-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2272-50-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2272-7-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/2272-52-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/2496-56-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-76-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-48-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-55-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-46-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-59-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-62-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-65-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-68-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-69-0x00000000009B0000-0x0000000000A52000-memory.dmp

Filesize
648KB

Download
memory/2496-70-0x00000000009B0000-0x0000000000A52000-memory.dmp

Filesize
648KB

Download
memory/2496-51-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-79-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-80-0x00000000009B0000-0x0000000000A52000-memory.dmp

Filesize
648KB

Download
memory/2496-83-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-86-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-89-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-92-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-93-0x00000000009B0000-0x0000000000A52000-memory.dmp

Filesize
648KB

Download
memory/2496-94-0x00000000009B0000-0x0000000000A52000-memory.dmp

Filesize
648KB

Download
memory/2496-98-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download
memory/2496-101-0x0000000000400000-0x00000000006DF000-memory.dmp

Filesize
2.9MB

Download

Analysis

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