socks5systemz | 8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1

General

Target

8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.exe
Size

1.8MB
MD5

a6659daf6c9fb92db47fedd4bb6a2a20
SHA1

b7bb128e65fccc69470e6193bedf9fd1e263af0d
SHA256

8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1
SHA512

b5c52c96987dd4bc72846ef4f1785f849a8277780adcb51cee431bf46ce74b609297babf3f900ceaa5076a18e2f32c05e2b9cf9bd198cd6126aa47abf6e66795
SSDEEP

49152:32HiQs4lxGrL4Q63z482pMh99RtTKoR7g2Ap:mHiQs4lkI8pMh9ZTv62Ap

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://cslksqd.net/search/?q=67e28dd86b5ea42a430af91a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe17c1e9939c3f

http://cslksqd.net/search/?q=67e28dd86b5ea42a430af91a7c27d78406abdd88be4b12eab517aa5c96bd86eb97854b815a8bbc896c58e713bc90c91936b5281fc235a925ed3e04d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee949c3acb699012

Signatures

Detect Socks5Systemz Payload 5 IoCs

resource	yara_rule
behavioral1/memory/4764-71-0x00000000007B0000-0x0000000000852000-memory.dmp	family_socks5systemz
behavioral1/memory/4764-73-0x00000000007B0000-0x0000000000852000-memory.dmp	family_socks5systemz
behavioral1/memory/4764-83-0x00000000007B0000-0x0000000000852000-memory.dmp	family_socks5systemz
behavioral1/memory/4764-96-0x00000000007B0000-0x0000000000852000-memory.dmp	family_socks5systemz
behavioral1/memory/4764-97-0x00000000007B0000-0x0000000000852000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
4632	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp
1944	htmlprofessionalkit.exe
4764	htmlprofessionalkit.exe

Loads dropped DLL 3 IoCs

pid	Process
4632	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp
4632	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp
4632	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.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	45.155.250.90

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 3500 wrote to memory of 4632	3500	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.exe	84
PID 3500 wrote to memory of 4632	3500	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.exe	84
PID 3500 wrote to memory of 4632	3500	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.exe	84
PID 4632 wrote to memory of 1944	4632	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp	88
PID 4632 wrote to memory of 1944	4632	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp	88
PID 4632 wrote to memory of 1944	4632	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp	88
PID 4632 wrote to memory of 4764	4632	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp	89
PID 4632 wrote to memory of 4764	4632	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp	89
PID 4632 wrote to memory of 4764	4632	8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp	89

C:\Users\Admin\AppData\Local\Temp\8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.exe
"C:\Users\Admin\AppData\Local\Temp\8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3500
- C:\Users\Admin\AppData\Local\Temp\is-LLB8Q.tmp\8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-LLB8Q.tmp\8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp" /SL5="$10005E,1529793,54272,C:\Users\Admin\AppData\Local\Temp\8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:4632
- - C:\Users\Admin\AppData\Local\HTML Professional Kit\htmlprofessionalkit.exe
    "C:\Users\Admin\AppData\Local\HTML Professional Kit\htmlprofessionalkit.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1944
- - C:\Users\Admin\AppData\Local\HTML Professional Kit\htmlprofessionalkit.exe
    "C:\Users\Admin\AppData\Local\HTML Professional Kit\htmlprofessionalkit.exe" -s
    3⤵
    - Executes dropped EXE
    PID:4764

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\HTML Professional Kit\htmlprofessionalkit.exe

Filesize
1.7MB

MD5
032724a18712534d3fc5d8d64ff8f84f

SHA1
8120c27729bb91aa0a016f16863e0689c05f8059

SHA256
d07ed54fab641497e12cc97b4bee994809e39f6fb9c096909661d5df3c2bfdf4

SHA512
035c5d4e5477acc774042734f1df2c30f5f40ee854d2233b6e63490b66401b39ec9f9380753c746348928e86aa677f0cceedbe4f81f45d6812c6d80c5ac1649d

Download Submit
C:\Users\Admin\AppData\Local\HTML Professional Kit\htmlprofessionalkit.exe

Filesize
1.1MB

MD5
484b2c9aaf88bcf90fb29ae3a2699ed8

SHA1
6697eed04fa4fcf87ef5efcae1b7f168d5f6220f

SHA256
934ae1fe1352fd13330d2bc365624610056adbc5f0548ebc880667b289095e55

SHA512
551274edd3a5562762fe895efdb81e402f63ca4f8953972c5f46383b2838e9b21a56cd2518a2368fc99dde6da080084f9d76849e206fe61b13106adc2d458dc6

Download Submit
C:\Users\Admin\AppData\Local\HTML Professional Kit\htmlprofessionalkit.exe

Filesize
1.6MB

MD5
35331ae02d8a790816b39763cc3c9614

SHA1
0121ca4aa504971b7ae7cb23ff91f4539a390bbe

SHA256
8bc4538bb87b6b5e072f63e64cf0c4f7be032ea149f2ede2bd6f8cc637dafd20

SHA512
36cb8ba214f5bf351e4b9659f9f44bf7e55d84ea20de1fe389a1e2f8494e2d61a0ececef748acbcc9e1d1ea5765e2073f6b07be14e42bb9cc1361f58bdf8aa67

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2C7K0.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2C7K0.tmp\_isetup\_isdecmp.dll

Filesize
32KB

MD5
b6f11a0ab7715f570f45900a1fe84732

SHA1
77b1201e535445af5ea94c1b03c0a1c34d67a77b

SHA256
e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

SHA512
78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-LLB8Q.tmp\8d8461c9e074dcbc9f60c2e804e11add29e443612952a0a0d3cfe9cf3ac54fd1.tmp

Filesize
677KB

MD5
1468f751dd82e8a2b603de47e40ea363

SHA1
98ad87c530d457feea9bbf01a2f0aa651d1310b9

SHA256
ec5029bbec68e156756d0f546a1f4ba430cb2fa99317967b654e19a88c4450ca

SHA512
ef2ad7d18d415513d22872f24fd920270b9dee5f59374d2f637b5f6998703307e8b264daeeeafabd05d7ab4c8b083bc3e60c24dd45ac1a1dfcfa752db9ec720b

Download Submit
memory/1944-43-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/1944-44-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/1944-47-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/1944-48-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/3500-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3500-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4632-55-0x0000000000650000-0x0000000000651000-memory.dmp

Filesize
4KB

Download
memory/4632-6-0x0000000000650000-0x0000000000651000-memory.dmp

Filesize
4KB

Download
memory/4632-53-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/4764-59-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-82-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-58-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-51-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-62-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-65-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-68-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-71-0x00000000007B0000-0x0000000000852000-memory.dmp

Filesize
648KB

Download
memory/4764-72-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-73-0x00000000007B0000-0x0000000000852000-memory.dmp

Filesize
648KB

Download
memory/4764-79-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-54-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-83-0x00000000007B0000-0x0000000000852000-memory.dmp

Filesize
648KB

Download
memory/4764-86-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-89-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-92-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-95-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-96-0x00000000007B0000-0x0000000000852000-memory.dmp

Filesize
648KB

Download
memory/4764-97-0x00000000007B0000-0x0000000000852000-memory.dmp

Filesize
648KB

Download
memory/4764-101-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download
memory/4764-104-0x0000000000400000-0x00000000005AC000-memory.dmp

Filesize
1.7MB

Download

Analysis

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