socks5systemz | 15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300

General

Target

15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.exe
Size

4.6MB
MD5

2cbda171c339999488815f9d581634be
SHA1

e3b23a2a4895a3ba8f41f4fed3198dffb61fd915
SHA256

15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300
SHA512

77b517d2a056f877c48c6515a40b58aae1a027ad45617de83805ec66dcf50ce8b2dfce91314ea4a85f347317495b2f22009f64151cf771ef2cf9ef4b8bb2db66
SSDEEP

98304:mhcexmKb6Su3wHmfa0PjJX+21+UpG9zBirXfQ2AM+PU7F5:KMKb69O0rFstjirXfpoYF5

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

difqhev.info

http://difqhev.info/search/?q=67e28dd86c08f72b460daf4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff818c2ed93993e

http://difqhev.info/search/?q=67e28dd86c08f72b460daf4c7c27d78406abdd88be4b12eab517aa5c96bd86ec928648885a8bbc896c58e713bc90c91b36b5281fc235a925ed3e01d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee929339cf699513

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1996-87-0x0000000000A00000-0x0000000000AA2000-memory.dmp	family_socks5systemz
behavioral1/memory/1996-111-0x0000000000A00000-0x0000000000AA2000-memory.dmp	family_socks5systemz
behavioral1/memory/1996-112-0x0000000000A00000-0x0000000000AA2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2800	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp
1300	virtualsoundcard.exe
1996	virtualsoundcard.exe

Loads dropped DLL 1 IoCs

pid	Process
2800	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.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 FindShellTrayWindow 1 IoCs

pid	Process
2800	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4220 wrote to memory of 2800	4220	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.exe	81
PID 4220 wrote to memory of 2800	4220	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.exe	81
PID 4220 wrote to memory of 2800	4220	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.exe	81
PID 2800 wrote to memory of 1300	2800	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp	83
PID 2800 wrote to memory of 1300	2800	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp	83
PID 2800 wrote to memory of 1300	2800	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp	83
PID 2800 wrote to memory of 1996	2800	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp	86
PID 2800 wrote to memory of 1996	2800	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp	86
PID 2800 wrote to memory of 1996	2800	15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp	86

C:\Users\Admin\AppData\Local\Temp\15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.exe
"C:\Users\Admin\AppData\Local\Temp\15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4220
- C:\Users\Admin\AppData\Local\Temp\is-OE6IK.tmp\15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-OE6IK.tmp\15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp" /SL5="$C0066,4588745,54272,C:\Users\Admin\AppData\Local\Temp\15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2800
- - C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
    "C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1300
- - C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
    "C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1996

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\Temp\is-IJJ17.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-OE6IK.tmp\15fe8832fc196cf53d39e55099f9eff432370c2d7cc70f71a0e60a6cdf2ca300.tmp

Filesize
680KB

MD5
94ebd7c7c5adcf2267929fba503116d5

SHA1
e7bd7046fc47d6d80e6817580fcd5aff9e198828

SHA256
f9af6cca41dec59fbcd3a34f5b5f896d426d8aa174398bfd6be6020e10c8f7ed

SHA512
de6874a3a0ab12aad2713c6363b561e4a709766ce4e139bba91fd420b6151254c8b1451a8d368f3dba076d639f53cd7e7860ede9c192a2e71c11c310afc6daad

Download Submit
C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe

Filesize
2.6MB

MD5
d11765981cccecb1746fa941a949e874

SHA1
076674122476aa162d4db151a959ac3b8574a35c

SHA256
ade76ac86a8bbec4fc75dc2e276407829952a21cb386881b30841a823adafed2

SHA512
4fc3861877c5ea9064250b05e3198ca6b88aff8c62bb84efe7e793449ad862a377c680837dfcd50fed388a2bcdb28442bbb0f90008e1289f2b82905ad5888c7f

Download Submit
memory/1300-60-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1300-64-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1300-63-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1300-59-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-75-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-87-0x0000000000A00000-0x0000000000AA2000-memory.dmp

Filesize
648KB

Download
memory/1996-119-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-66-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-68-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-116-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-112-0x0000000000A00000-0x0000000000AA2000-memory.dmp

Filesize
648KB

Download
memory/1996-71-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-74-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-111-0x0000000000A00000-0x0000000000AA2000-memory.dmp

Filesize
648KB

Download
memory/1996-78-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-81-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-84-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-110-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-90-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-95-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-98-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-101-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-104-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/1996-107-0x0000000000400000-0x00000000006A7000-memory.dmp

Filesize
2.7MB

Download
memory/2800-13-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2800-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4220-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4220-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4220-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download

Analysis

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