socks5systemz | 7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd

General

Target

7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe
Size

1.8MB
MD5

8f054a8b456dfbada75b7a2ef3ad7d73
SHA1

d4496ee10ebcc4e2fb2f96d6a52ada228ba53530
SHA256

7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd
SHA512

8b9edb729e0012e06b1eade35fac69471432349f2facfe4fc0904404e02978d14e5dd0821d8c46657e9bd0aaf48226bac75f3c1773c86663fcc934b6adc1c83e
SSDEEP

49152:C9mKJlfHPcJxlNkiWvE7m/7Y5ErBggstoOsN:MmYH0JzNDMEyEyBgNoXN

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bnbotmz.com

http://bnbotmz.com/search/?q=67e28dd86e5ef12f1358fa4b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978f271ea771795af8e05c64bdb22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608afd13c7ea929d3b

http://bnbotmz.com/search/?q=67e28dd86e5ef12f1358fa4b7c27d78406abdd88be4b12eab517aa5c96bd86ec908e49845a8bbc896c58e713bc90c91b36b5281fc235a925ed3e51d6bd974a95129070b618e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7eb97983cc8689116

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/4876-67-0x0000000000780000-0x0000000000823000-memory.dmp	family_socks5systemz
behavioral2/memory/4876-95-0x0000000000780000-0x0000000000823000-memory.dmp	family_socks5systemz
behavioral2/memory/4876-96-0x0000000000780000-0x0000000000823000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp
1512	cruisemailer.exe
4876	cruisemailer.exe

Loads dropped DLL 1 IoCs

pid	Process
2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp

Unexpected DNS network traffic destination 3 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	flow	ioc	pid	Process
Destination IP	43	152.89.198.214	4876	cruisemailer.exe
Destination IP	44	91.211.247.248	4876	cruisemailer.exe
Destination IP	41	152.89.198.214	4876	cruisemailer.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

System Location Discovery: System Language Discovery 1 TTPs 4 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	cruisemailer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cruisemailer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp
2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1880 wrote to memory of 2684	1880	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe	86
PID 1880 wrote to memory of 2684	1880	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe	86
PID 1880 wrote to memory of 2684	1880	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe	86
PID 2684 wrote to memory of 1512	2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	89
PID 2684 wrote to memory of 1512	2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	89
PID 2684 wrote to memory of 1512	2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	89
PID 2684 wrote to memory of 4876	2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	90
PID 2684 wrote to memory of 4876	2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	90
PID 2684 wrote to memory of 4876	2684	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	90

C:\Users\Admin\AppData\Local\Temp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe
"C:\Users\Admin\AppData\Local\Temp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Users\Admin\AppData\Local\Temp\is-NQMOU.tmp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-NQMOU.tmp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp" /SL5="$8002E,1496911,56832,C:\Users\Admin\AppData\Local\Temp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe
    "C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1512
- - C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe
    "C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe" -s
    3⤵
    - Executes dropped EXE
    - Unexpected DNS network traffic destination
    - System Location Discovery: System Language Discovery
    PID:4876

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 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\Cruise Mailer\cruisemailer.exe

Filesize
1.6MB

MD5
9665c577301304ffce9f16c8240e01e1

SHA1
eb0edabd89a026172b4e1d4fa8cb60ff430f6515

SHA256
c04e33877b1569cbb3a57e219949f438630c058602dd81541c71cd66bbb33498

SHA512
a6399a41971f8293c6842c82135aa80b897a4607c7c3857a93a32d7b75098a8acf87287b2f0a79c9fa3712424c3d9a9fbb141ae5ec6145bfb5aa8214f8989921

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-I4BFI.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-NQMOU.tmp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp

Filesize
690KB

MD5
1cfbe4f8e1453dde73bbda75290b5f1a

SHA1
58b6892edd5423a262adc7f60e2646422dc7a263

SHA256
6b379deda24136023d02ee39a9a6bb6071df6d6c69f6896d8296c6abe6af2edc

SHA512
d3f413d9c57cecc6487fc007ff30acc44c6fa3aa4658e14baf375bba4a2d808ac166fa5056dedc2a03b5be716e65dfb78ba9bf156759a610bca7d1ab227e455e

Download Submit
memory/1512-37-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1512-38-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1512-39-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1512-43-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/1880-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1880-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1880-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2684-7-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2684-47-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/4876-57-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-79-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-51-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-54-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-46-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-60-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-63-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-66-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-67-0x0000000000780000-0x0000000000823000-memory.dmp

Filesize
652KB

Download
memory/4876-73-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-76-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-50-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-82-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-85-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-88-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-91-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-94-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-95-0x0000000000780000-0x0000000000823000-memory.dmp

Filesize
652KB

Download
memory/4876-96-0x0000000000780000-0x0000000000823000-memory.dmp

Filesize
652KB

Download
memory/4876-100-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-103-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-106-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/4876-109-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download

Analysis

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