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

bmjqtui.com

http://bmjqtui.com/search/?q=67e28dd86e0ca029110da84e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c64bdb22f31df92d8b38e316a667d307eca743ec4c2b07b52966923f658cf814c7e895

http://bmjqtui.com/search/?q=67e28dd86e0ca029110da84e7c27d78406abdd88be4b12eab517aa5c96bd86ec938f4a835a8bbc896c58e713bc90c91936b5281fc235a925ed3e01d6bd974a95129070b618e96cc92be20ea778c255bbe258b90d3b4eed3233d1626a8ff815c2ed929f3cca6f

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2876-72-0x00000000025A0000-0x0000000002643000-memory.dmp	family_socks5systemz
behavioral1/memory/2876-94-0x00000000025A0000-0x0000000002643000-memory.dmp	family_socks5systemz
behavioral1/memory/2876-95-0x00000000025A0000-0x0000000002643000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp
2724	cruisemailer.exe
2876	cruisemailer.exe

Loads dropped DLL 5 IoCs

pid	Process
372	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe
320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp
320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp
320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp
320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.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	2	45.155.250.90	2876	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	cruisemailer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp
320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 320	372	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe	30
PID 372 wrote to memory of 320	372	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe	30
PID 372 wrote to memory of 320	372	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe	30
PID 372 wrote to memory of 320	372	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe	30
PID 372 wrote to memory of 320	372	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe	30
PID 372 wrote to memory of 320	372	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe	30
PID 372 wrote to memory of 320	372	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe	30
PID 320 wrote to memory of 2724	320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	31
PID 320 wrote to memory of 2724	320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	31
PID 320 wrote to memory of 2724	320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	31
PID 320 wrote to memory of 2724	320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	31
PID 320 wrote to memory of 2876	320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	32
PID 320 wrote to memory of 2876	320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	32
PID 320 wrote to memory of 2876	320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	32
PID 320 wrote to memory of 2876	320	7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp	32

C:\Users\Admin\AppData\Local\Temp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe
"C:\Users\Admin\AppData\Local\Temp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:372
- C:\Users\Admin\AppData\Local\Temp\is-P2791.tmp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-P2791.tmp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp" /SL5="$50018,1496911,56832,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:320
- - 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:2724
- - 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:2876

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
\Users\Admin\AppData\Local\Temp\is-OEROT.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-OEROT.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-P2791.tmp\7f410bf8eac1204c6bc44c368358a01bd968d0e012f53be68ce4200f16ad7ecd.tmp

Filesize
690KB

MD5
1cfbe4f8e1453dde73bbda75290b5f1a

SHA1
58b6892edd5423a262adc7f60e2646422dc7a263

SHA256
6b379deda24136023d02ee39a9a6bb6071df6d6c69f6896d8296c6abe6af2edc

SHA512
d3f413d9c57cecc6487fc007ff30acc44c6fa3aa4658e14baf375bba4a2d808ac166fa5056dedc2a03b5be716e65dfb78ba9bf156759a610bca7d1ab227e455e

Download Submit
memory/320-8-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/320-42-0x00000000034A0000-0x0000000003646000-memory.dmp

Filesize
1.6MB

Download
memory/320-51-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/320-52-0x00000000034A0000-0x0000000003646000-memory.dmp

Filesize
1.6MB

Download
memory/372-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/372-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/372-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2724-43-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2724-44-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2724-47-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-62-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-84-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-56-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-59-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-49-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-65-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-68-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-71-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-72-0x00000000025A0000-0x0000000002643000-memory.dmp

Filesize
652KB

Download
memory/2876-78-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-81-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-55-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-87-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-90-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-93-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-94-0x00000000025A0000-0x0000000002643000-memory.dmp

Filesize
652KB

Download
memory/2876-95-0x00000000025A0000-0x0000000002643000-memory.dmp

Filesize
652KB

Download
memory/2876-99-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-102-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-105-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-108-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-111-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download
memory/2876-114-0x0000000000400000-0x00000000005A6000-memory.dmp

Filesize
1.6MB

Download

Analysis

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