socks5systemz | 461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813

General

Target

461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.exe
Size

5.0MB
MD5

1770a632ff15e2a6881f18a7cbe71b7e
SHA1

078b2104acbff205b7b5c0e68c1c3353eea87b79
SHA256

461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813
SHA512

231c2ebe1261836bdb0f5bde6e2b6194d723034950c2ed8b0fa3bda0de6c39d219601a211adafb4d3e79da5823297806803bcf159b1a6dd950e6a7725555dfb8
SSDEEP

98304:CBEm5m6ahYZQeMDQWJAHVOFN2VZbIjRH2IrN23Jt9ZxZokm56WCoQxeB:GMFWZmDIHg2BE0JtTxZi56voQsB

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/2612-87-0x0000000000B70000-0x0000000000C12000-memory.dmp	family_socks5systemz
behavioral2/memory/2612-111-0x0000000000B70000-0x0000000000C12000-memory.dmp	family_socks5systemz
behavioral2/memory/2612-112-0x0000000000B70000-0x0000000000C12000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
4088	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp
1160	bcodecpack32_64.exe
2612	bcodecpack32_64.exe

Loads dropped DLL 1 IoCs

pid	Process
4088	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.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
4088	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 4088	1180	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.exe	81
PID 1180 wrote to memory of 4088	1180	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.exe	81
PID 1180 wrote to memory of 4088	1180	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.exe	81
PID 4088 wrote to memory of 1160	4088	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp	83
PID 4088 wrote to memory of 1160	4088	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp	83
PID 4088 wrote to memory of 1160	4088	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp	83
PID 4088 wrote to memory of 2612	4088	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp	84
PID 4088 wrote to memory of 2612	4088	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp	84
PID 4088 wrote to memory of 2612	4088	461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp	84

C:\Users\Admin\AppData\Local\Temp\461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.exe
"C:\Users\Admin\AppData\Local\Temp\461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Users\Admin\AppData\Local\Temp\is-PQPVT.tmp\461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-PQPVT.tmp\461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp" /SL5="$702DC,4999411,54272,C:\Users\Admin\AppData\Local\Temp\461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4088
- - C:\Users\Admin\AppData\Local\B-Codec Pack\bcodecpack32_64.exe
    "C:\Users\Admin\AppData\Local\B-Codec Pack\bcodecpack32_64.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1160
- - C:\Users\Admin\AppData\Local\B-Codec Pack\bcodecpack32_64.exe
    "C:\Users\Admin\AppData\Local\B-Codec Pack\bcodecpack32_64.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2612

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\B-Codec Pack\bcodecpack32_64.exe

Filesize
3.9MB

MD5
55bd40c0f6959aeb68c032ea4ab555be

SHA1
eeb59a3f186e5d683913896753e9782579d7f274

SHA256
2694c1fd8338de913b4bfe75779f194002666176f1b0caaa73822d2c65b7b80f

SHA512
5f025773811fc85481c66d19fec073faf9af8bbef2ca42181f1c5f9cc91ffc0de3277dc0c7491e757d4475d9c5457e9e803a064a69c894200eca7d304e76468e

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6HMB4.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PQPVT.tmp\461d8815b61b669a855be1d2cacb3f8bc08ef14737bacc1b0b54da8cd5107813.tmp

Filesize
680KB

MD5
0c39e798d72738b7bd4f7cb26e572d76

SHA1
6b8909b654f42cad951c1aa728274cdabc129eac

SHA256
1514cfa45304363333b67172c19bbd0f1bd9d07d88ad5e3fbd113e60dfb693bf

SHA512
063b84d5215c80834af6470512446238aa9c406f34f4046e68be15cb364211a28e34b025b4d65b4cebc605882641c21c2a07360f2cf65d0c2a170b1ff3cd9e76

Download Submit
memory/1160-60-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/1160-62-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/1160-64-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/1180-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1180-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1180-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2612-74-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-87-0x0000000000B70000-0x0000000000C12000-memory.dmp

Filesize
648KB

Download
memory/2612-68-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-119-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-71-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-116-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-75-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-78-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-81-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-84-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-89-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-67-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-95-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-98-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-101-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-104-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-107-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-110-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/2612-111-0x0000000000B70000-0x0000000000C12000-memory.dmp

Filesize
648KB

Download
memory/2612-112-0x0000000000B70000-0x0000000000C12000-memory.dmp

Filesize
648KB

Download
memory/4088-13-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4088-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

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