socks5systemz | 985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1

General

Target

985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe
Size

4.6MB
MD5

22ad5bdd6c7602233ffa5173c49b0719
SHA1

e6b8f5ce07b70867c5071f7655cdd6f6bb69e0c0
SHA256

985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1
SHA512

2c3dd109d5a409ba4ac3b33868280cc6b1e958a6392a0526105a1eef67db3c78a6cbc698bb8eec5d98b202b4f37c88e90a2473c64d04e76dbbe965484e37f8c4
SSDEEP

98304:mJ83IAaNlvZpRyoOVtreNi1yLtzogS1Ur15QsEvhl5GD:Z5abnR6t6NiwZPr71Evj5GD

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/4396-86-0x00000000024C0000-0x0000000002562000-memory.dmp	family_socks5systemz
behavioral1/memory/4396-109-0x00000000024C0000-0x0000000002562000-memory.dmp	family_socks5systemz
behavioral1/memory/4396-110-0x00000000024C0000-0x0000000002562000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
3812	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp
3536	fgaudioconverter.exe
4396	fgaudioconverter.exe

Loads dropped DLL 1 IoCs

pid	Process
3812	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.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	91.211.247.248

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
3812	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3816 wrote to memory of 3812	3816	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe	90
PID 3816 wrote to memory of 3812	3816	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe	90
PID 3816 wrote to memory of 3812	3816	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe	90
PID 3812 wrote to memory of 3536	3812	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp	94
PID 3812 wrote to memory of 3536	3812	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp	94
PID 3812 wrote to memory of 3536	3812	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp	94
PID 3812 wrote to memory of 4396	3812	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp	95
PID 3812 wrote to memory of 4396	3812	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp	95
PID 3812 wrote to memory of 4396	3812	985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp	95

C:\Users\Admin\AppData\Local\Temp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe
"C:\Users\Admin\AppData\Local\Temp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3816
- C:\Users\Admin\AppData\Local\Temp\is-BKJ99.tmp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-BKJ99.tmp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp" /SL5="$401FE,4606889,54272,C:\Users\Admin\AppData\Local\Temp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:3812
- - C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe
    "C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe" -i
    3⤵
    - Executes dropped EXE
    PID:3536
- - C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe
    "C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe" -s
    3⤵
    - Executes dropped EXE
    PID:4396

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 --field-trial-handle=3960,i,6166776566165096562,4582328833313060853,262144 --variations-seed-version --mojo-platform-channel-handle=3804 /prefetch:8
1⤵
PID:936

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\FGaudioConverter\fgaudioconverter.exe

Filesize
2.7MB

MD5
199eceb5314974db86f81aeef7cfc6b0

SHA1
c89bf3ad50d8a54748797784a8c5eb0205d9c4f7

SHA256
4cf41b700bfd861319ec71d08d292a1964448378e7a0a9c555e0c4f1d1b179f5

SHA512
9e6118396fd0fa892e33753d6fed18f1dc0c910d7dace844b56e898485336b7320c050410c3b1932688142e29d080025353dc5dd384a32028c11e0266a7962a5

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-BKJ99.tmp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp

Filesize
680KB

MD5
aae7350b982230aa0db7a4b4fcb06dff

SHA1
40e4e5969d10adca4622d07d7a32ad7cb632142e

SHA256
ea41b6a63817cf5dae2ca2b3b001f5b03386eda8c0ea22293ec3b561188942f3

SHA512
15d2ffda3c20d238ab8127a50edcc6b8d57246c1c05c91709cd3af2bf3b76a604d2461bcfde6ebe768821f7824808b985b456039d0bfc3fd5abb903e5a40fb0b

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-NFJK9.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/3536-59-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/3536-60-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/3536-61-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/3536-65-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/3812-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3812-13-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3816-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3816-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3816-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4396-74-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-96-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-68-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-77-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-80-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-83-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-86-0x00000000024C0000-0x0000000002562000-memory.dmp

Filesize
648KB

Download
memory/4396-90-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-93-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-71-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-99-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-102-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-105-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-108-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-109-0x00000000024C0000-0x0000000002562000-memory.dmp

Filesize
648KB

Download
memory/4396-110-0x00000000024C0000-0x0000000002562000-memory.dmp

Filesize
648KB

Download
memory/4396-114-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download
memory/4396-117-0x0000000000400000-0x00000000006B0000-memory.dmp

Filesize
2.7MB

Download

Analysis

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