socks5systemz | b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e

General

Target

b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe
Size

2.0MB
MD5

c0936b0b60581abf999cb8db58c887d6
SHA1

b6817af3e994b051935cfa2bdb7de674c5f7f949
SHA256

b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e
SHA512

117d8f65c863db9c6514d17fff354a65c1faaee582fe630fb7713ae7f9cbc969013f0c17fe01fc763f0f42b3f090021fdca16672cde26a17038ba1b36584e094
SSDEEP

49152:32mReh8xhZ4DirVux6pKP79FS+iZM95cALWatNiCtQUOK+oR98:mmQab4Dq84oR0+4MQGHcWQqHR6

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bmhuieq.com

http://bmhuieq.com/search/?q=67e28dd8645df12f145cac4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a471ea771795af8e05c642db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608afd13c8ed9d9d39

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/5772-73-0x0000000000720000-0x00000000007C2000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Socks5systemz family
socks5systemz

Executes dropped EXE 3 IoCs

pid	Process
5232	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp
3212	markdownpad32.exe
5772	markdownpad32.exe

Loads dropped DLL 3 IoCs

pid	Process
5232	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp
5232	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp
5232	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.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	flow	ioc	pid	Process
Destination IP	36	141.98.234.31	5772	markdownpad32.exe

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

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	markdownpad32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5408 wrote to memory of 5232	5408	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe	85
PID 5408 wrote to memory of 5232	5408	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe	85
PID 5408 wrote to memory of 5232	5408	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe	85
PID 5232 wrote to memory of 3212	5232	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp	88
PID 5232 wrote to memory of 3212	5232	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp	88
PID 5232 wrote to memory of 3212	5232	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp	88
PID 5232 wrote to memory of 5772	5232	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp	89
PID 5232 wrote to memory of 5772	5232	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp	89
PID 5232 wrote to memory of 5772	5232	b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp	89

C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe
"C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5408
- C:\Users\Admin\AppData\Local\Temp\is-D8KL3.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-D8KL3.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp" /SL5="$5017C,1722205,54272,C:\Users\Admin\AppData\Local\Temp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5232
- - C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
    "C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i
    3⤵
    - Executes dropped EXE
    PID:3212
- - C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
    "C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s
    3⤵
    - Executes dropped EXE
    - Unexpected DNS network traffic destination
    - System Location Discovery: System Language Discovery
    PID:5772

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

Filesize
1.8MB

MD5
e1377c17e6c6bf04ead10fc76a847e2a

SHA1
1963ab0f5faca44637fd0fe8b1041c763bceebb1

SHA256
a52e5779bec20092f903389069e5ba5c6060987e255b203b6b0d9d5ac791296b

SHA512
9bc7d2fac768d4472b0629ae6ed308663b9902a486a9022f1f3a6c4bc09793c639a8e51968baf07d835592e156adbecee6bd705b1289dd0885c1665c761d8808

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-95P43.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-95P43.tmp\_isetup\_isdecmp.dll

Filesize
32KB

MD5
b6f11a0ab7715f570f45900a1fe84732

SHA1
77b1201e535445af5ea94c1b03c0a1c34d67a77b

SHA256
e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

SHA512
78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-D8KL3.tmp\b42c724af5c05849434bb0c34cabbd138201a7f6b6b56faadbc150885cfd0a2e.tmp

Filesize
677KB

MD5
88d7ea648defbc2597fa38ef83112eda

SHA1
2bce9acfb1b5e08dc29c695eff12fc80949c6440

SHA256
5a53b8bd78b1bbf24136b4d8d8191f503abcc24934626ed6f15bf9f6dee17b68

SHA512
050ce971e1f7a4e92d272c9c3c9f96f1214286523b018a75084c76dbebb5f32a717afbd9af9c68b7ad71f738c0a331640a8fe765cb4def90678eae4769b2e66a

Download Submit
memory/3212-48-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/3212-44-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/3212-45-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/3212-49-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5232-7-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5232-53-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/5408-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/5408-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5408-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5772-66-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-83-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-57-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-60-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-63-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-52-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-69-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-72-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-73-0x0000000000720000-0x00000000007C2000-memory.dmp

Filesize
648KB

Download
memory/5772-79-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-80-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-56-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-86-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-89-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-92-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-95-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-99-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-102-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-105-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-108-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-111-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-114-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download
memory/5772-119-0x0000000000400000-0x00000000005D4000-memory.dmp

Filesize
1.8MB

Download

Analysis

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