socks5systemz | 7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0

General

Target

7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.exe
Size

1.8MB
MD5

b12a8f8dbdfe288340dea3969b6891fa
SHA1

46ede1b2ef2bcb8842fe185ec251e3c534353846
SHA256

7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0
SHA512

a6202ed56c7b8ed167148c323df793ad105b7e394fc6665b6bdecab165561fc7cf45cffed368bae3a6c2e1b15817a409f1fa695a7b270145ac77296c82284b0d
SSDEEP

49152:325iFh0OS4V/z9SKCK95WlfkxSIXHHHHokq2:mU/0OrV/zIomlEnokh

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://bmuytoh.com/search/?q=67e28dd83a58f22a160bab1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a071ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe16c3e9949d3c

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/5032-65-0x00000000007B0000-0x0000000000852000-memory.dmp	family_socks5systemz
behavioral2/memory/5032-69-0x00000000007B0000-0x0000000000852000-memory.dmp	family_socks5systemz
behavioral2/memory/5032-78-0x00000000007B0000-0x0000000000852000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
4908	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.tmp
1836	codecpackupdate.exe
5032	codecpackupdate.exe

Loads dropped DLL 1 IoCs

pid	Process
4908	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.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 WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 4908	2972	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.exe	77
PID 2972 wrote to memory of 4908	2972	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.exe	77
PID 2972 wrote to memory of 4908	2972	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.exe	77
PID 4908 wrote to memory of 1836	4908	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.tmp	78
PID 4908 wrote to memory of 1836	4908	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.tmp	78
PID 4908 wrote to memory of 1836	4908	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.tmp	78
PID 4908 wrote to memory of 5032	4908	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.tmp	79
PID 4908 wrote to memory of 5032	4908	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.tmp	79
PID 4908 wrote to memory of 5032	4908	7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.tmp	79

C:\Users\Admin\AppData\Local\Temp\7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.exe
"C:\Users\Admin\AppData\Local\Temp\7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Users\Admin\AppData\Local\Temp\is-SA9Q5.tmp\7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-SA9Q5.tmp\7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.tmp" /SL5="$6006C,1563143,54272,C:\Users\Admin\AppData\Local\Temp\7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:4908
- - C:\Users\Admin\AppData\Local\Codec Pack Update\codecpackupdate.exe
    "C:\Users\Admin\AppData\Local\Codec Pack Update\codecpackupdate.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1836
- - C:\Users\Admin\AppData\Local\Codec Pack Update\codecpackupdate.exe
    "C:\Users\Admin\AppData\Local\Codec Pack Update\codecpackupdate.exe" -s
    3⤵
    - Executes dropped EXE
    PID:5032

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\Codec Pack Update\codecpackupdate.exe

Filesize
1.7MB

MD5
1136c06436ce4e22da099791f651ee4e

SHA1
a3e21ef9f4df17634399b1ede5d3bbc7f4f78127

SHA256
ae6ca90ddb7d45a30ed463a038333995b796d56250da9f70e9af57c54c0a5709

SHA512
a144daa783b20ccbe10b624307e263a508d1c67e53facae34c593c17701005393172cad8c52ae347daa1c1843934ec649271dfa4ee719ce7de5b86250959a4ed

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PQU1I.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-SA9Q5.tmp\7e93898eafbc0277605150085c498a11cc8c51192a52f1a04781de8096c40ad0.tmp

Filesize
677KB

MD5
83d7000d5d49537dcd2e9440ecad3636

SHA1
e161b66bc7fe08b31822e836ba6a7d68aa1cedf7

SHA256
af439e9d0ea6fd7d73ca83be3436720bd4d65c4b9a700856cd1f4dd232087c00

SHA512
ae744ae54ecedb604896f55e9620b3245f0e69dc56eb51524461f11781e98f48e41b45e91898fc6622e6e9e1a5a9ee7c2568f1face3b69111b21b381dd2bc332

Download Submit
memory/1836-38-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/1836-37-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/1836-39-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/1836-42-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/2972-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2972-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4908-48-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/4908-6-0x0000000002200000-0x0000000002201000-memory.dmp

Filesize
4KB

Download
memory/4908-50-0x0000000002200000-0x0000000002201000-memory.dmp

Filesize
4KB

Download
memory/5032-54-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-68-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-46-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-53-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-44-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-57-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-60-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-63-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-65-0x00000000007B0000-0x0000000000852000-memory.dmp

Filesize
648KB

Download
memory/5032-49-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-69-0x00000000007B0000-0x0000000000852000-memory.dmp

Filesize
648KB

Download
memory/5032-74-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-77-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-78-0x00000000007B0000-0x0000000000852000-memory.dmp

Filesize
648KB

Download
memory/5032-81-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-84-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-87-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-90-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-94-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download
memory/5032-97-0x0000000000400000-0x00000000005B1000-memory.dmp

Filesize
1.7MB

Download

Analysis

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