socks5systemz | f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0

General

Target

f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.exe
Size

3.4MB
MD5

baedd7908c04418acc31854226393484
SHA1

6991cb75f6ec57013df271b0e212b2c7be7fd4ae
SHA256

f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0
SHA512

11cd3acb55d412e1400172f619dc87272e9c5c3fd9102312edf9bf1d53e67150f520cde8a6f1f58b42091b82e2b226d98e8ac3415bdbe37a1ec8a49d94a66e94
SSDEEP

49152:T9tklXMj3d0oXG76VGiqRO2IuQ8VXFysr+sd+fJvL+F+saDUN5i7p9/ybYitG8N+:JmY6M264TvIXEVyBscfxJsaDpLKUA2

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2180-60-0x0000000000960000-0x0000000000A02000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
4676	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp
2180	hotcut.exe

Loads dropped DLL 1 IoCs

pid	Process
4676	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.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

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	hotcut.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4676	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp
4676	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4676	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 4676	1220	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.exe	85
PID 1220 wrote to memory of 4676	1220	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.exe	85
PID 1220 wrote to memory of 4676	1220	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.exe	85
PID 4676 wrote to memory of 2180	4676	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp	89
PID 4676 wrote to memory of 2180	4676	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp	89
PID 4676 wrote to memory of 2180	4676	f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp	89

C:\Users\Admin\AppData\Local\Temp\f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.exe
"C:\Users\Admin\AppData\Local\Temp\f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Users\Admin\AppData\Local\Temp\is-TVC6G.tmp\f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-TVC6G.tmp\f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp" /SL5="$A0060,3314410,338432,C:\Users\Admin\AppData\Local\Temp\f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.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:4676
- - C:\Users\Admin\AppData\Local\Hotcut\hotcut.exe
    "C:\Users\Admin\AppData\Local\Hotcut\hotcut.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2180

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\Hotcut\hotcut.exe

Filesize
2.4MB

MD5
038555f9fc171d5bd94b1f64e8426fd8

SHA1
2de0ebe6536a4cc8b3ac746ab590b9d6b33e338b

SHA256
3ab4ab3820fb0bbd7a827f0e7a925615ab95d17b09157f4b301825380db3616b

SHA512
698940aff1eb53cdf1b188cd7e2d52d23db0caa2253bd5b50c0bc091702d9543b46fe1d7b46d6596384cdfd7d6d86a39ea245b9a4238d529b17bde50a806ee26

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-TVC6G.tmp\f1286c9d4a1fc6413e5d1a9d3d0043be8c022f5b695be92af2d10dccb4375df0.tmp

Filesize
690KB

MD5
5a0b5a7b39fc53c35b3d99f13fcbcc29

SHA1
2fa238f97771b49e53bea1482b9a0d0666c4b29c

SHA256
70081185f6c03c4a7c383c7299ab4b8f272e223d8729cc41b7e2081149e38a4f

SHA512
ceb22dd8115ceb7a15dc35557cf36784ac921dd56ad3e723c3ab553cb85de8c7797884055249a93ce0b0004467c307e5a67c9aaa45bb80c2c548c1f9df4fdfea

Download Submit
memory/1220-40-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1220-1-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1220-2-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2180-47-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-56-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-38-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-88-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-34-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-41-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-43-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-44-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-85-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-50-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-53-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-35-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-59-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-60-0x0000000000960000-0x0000000000A02000-memory.dmp

Filesize
648KB

Download
memory/2180-66-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-69-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-72-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-75-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-78-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/2180-81-0x0000000000400000-0x0000000000665000-memory.dmp

Filesize
2.4MB

Download
memory/4676-7-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/4676-39-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download

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