socks5systemz | 38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af

General

Target

38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.exe
Size

4.1MB
MD5

fff384803e0be0f3a12557139baa2dac
SHA1

16148543c09ecb515d422210a361fe812ef6a9f7
SHA256

38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af
SHA512

f02f4a68534f17a2631b9fbc6d4d18cb50ddcac820a9ada1405ae844abad92de866ecdbc8d12cbd233111a740e8c3c108f6bd4a1e01f5cab3ca0a79ea5ab87be
SSDEEP

98304:0o2Eg5NafGQor61Q940+wls9DnR5+U9LFYwLMgvSt:b2EkNNeq940+JrR0U5Ddv6

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://buelyeb.com/search/?q=67e28dd86c08f72b460daf4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffa12c8ee93983e

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2860-90-0x0000000000780000-0x0000000000822000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2648	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.tmp
3720	mixerfreeedition.exe
2860	mixerfreeedition.exe

Loads dropped DLL 1 IoCs

pid	Process
2648	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.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	141.98.234.31

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

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4500 wrote to memory of 2648	4500	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.exe	82
PID 4500 wrote to memory of 2648	4500	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.exe	82
PID 4500 wrote to memory of 2648	4500	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.exe	82
PID 2648 wrote to memory of 3720	2648	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.tmp	86
PID 2648 wrote to memory of 3720	2648	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.tmp	86
PID 2648 wrote to memory of 3720	2648	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.tmp	86
PID 2648 wrote to memory of 2860	2648	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.tmp	87
PID 2648 wrote to memory of 2860	2648	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.tmp	87
PID 2648 wrote to memory of 2860	2648	38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.tmp	87

C:\Users\Admin\AppData\Local\Temp\38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.exe
"C:\Users\Admin\AppData\Local\Temp\38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4500
- C:\Users\Admin\AppData\Local\Temp\is-7QM5A.tmp\38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-7QM5A.tmp\38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.tmp" /SL5="$10005E,4080871,54272,C:\Users\Admin\AppData\Local\Temp\38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2648
- - C:\Users\Admin\AppData\Local\Mixer Free Edition\mixerfreeedition.exe
    "C:\Users\Admin\AppData\Local\Mixer Free Edition\mixerfreeedition.exe" -i
    3⤵
    - Executes dropped EXE
    PID:3720
- - C:\Users\Admin\AppData\Local\Mixer Free Edition\mixerfreeedition.exe
    "C:\Users\Admin\AppData\Local\Mixer Free Edition\mixerfreeedition.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Mixer Free Edition\libeay32.dll

Filesize
1.9MB

MD5
5fbd844a6ce26deb5337e8e6dd7c7b70

SHA1
5302e49b2027a07c7bb8f95d45510efc0d954cf8

SHA256
f0d640c4e07c81c29f0ec2b603ec3017bdd4db0d0e26c3fa364a6bbf45826058

SHA512
c383b5ec9fb9efd53cdf00c2b0940fe60a35a857f8be40ae0763647c3523712553910aca8504768cc86895b2168525fa6043d567e66e0ed5696e2c8e5e7b992d

Download Submit
C:\Users\Admin\AppData\Local\Mixer Free Edition\mixerfreeedition.exe

Filesize
1.7MB

MD5
c768e19e64e8e70c6fe458463c14708e

SHA1
272d9b168a1ca8e4541716583eb58b95fa21e725

SHA256
5884870d0ac58979e750a3025265513ad9c0b2221ee2347b38f1fa876007ee68

SHA512
7fe3047b10d6f2f7ec59004c2d20ea24fc091ea3595465e853b361af62973dbbc238bdcf17326c461155040f260f92cd159f99f011d28ebac8bbd4365b4ceca4

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2RUK4.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7QM5A.tmp\38214742b681e9720ad4550771f6a8466246ab5b69bdf373c6089acfb7a4c6af.tmp

Filesize
696KB

MD5
c6061f804038f66af0cbf28c43abf849

SHA1
0473fc63f6514857bba850ce50206fbe8c992b64

SHA256
6261d17d1ab1744496c0f2988954989398d6829f2417df5420ffdf6d64f8678e

SHA512
edf27bfeec82752b6d52a8eb68853dde5d5effd9c3a8c1c93e181167d8bc5ae2c6d7b19ac74955c91aa4e90913fb7dcc8439d33a5e0c8aac5fe71c914596e0ae

Download Submit
memory/2648-72-0x0000000000400000-0x00000000004BE000-memory.dmp

Filesize
760KB

Download
memory/2648-10-0x0000000000400000-0x00000000004BE000-memory.dmp

Filesize
760KB

Download
memory/2860-91-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-103-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-119-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-116-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-112-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-68-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-70-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-109-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-106-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-73-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-76-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-77-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-80-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-83-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-86-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-100-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/2860-90-0x0000000000780000-0x0000000000822000-memory.dmp

Filesize
648KB

Download
memory/2860-97-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/3720-60-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/3720-64-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/3720-65-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/3720-59-0x0000000000400000-0x00000000005C3000-memory.dmp

Filesize
1.8MB

Download
memory/4500-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4500-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4500-71-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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