socks5systemz | 66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362

General

Target

66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.exe
Size

3.4MB
MD5

92a1422d0c6073331648bd38beafcf6c
SHA1

f65ad391c14e2a41352431a0de7f3923ef7f61a6
SHA256

66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362
SHA512

0618009efe0cb6682a10bde93afed0b20324b3d924ba058de29b4d5ac770a93ddc14c0134489c38e9129f2ac009b999f3061dbcf5e51a58fa2e82e2180e515a6
SSDEEP

49152:1vSUQlTKBENfdXnjAX6EjxggcCYM0dOxHCDo9bTzRf4Htm4sVwqiLwh6f:NHn025Lft6OxH2uN4NQ+qiLd

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/1692-74-0x00000000008D0000-0x0000000000972000-memory.dmp	family_socks5systemz
behavioral2/memory/1692-103-0x00000000008D0000-0x0000000000972000-memory.dmp	family_socks5systemz
behavioral2/memory/1692-104-0x00000000008D0000-0x0000000000972000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp
1692	divxmedia3.exe

Loads dropped DLL 2 IoCs

pid	Process
1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp
1692	divxmedia3.exe

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	152.89.198.214

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 5 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	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	divxmedia3.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp
1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1616 wrote to memory of 1020	1616	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.exe	83
PID 1616 wrote to memory of 1020	1616	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.exe	83
PID 1616 wrote to memory of 1020	1616	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.exe	83
PID 1020 wrote to memory of 2576	1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp	84
PID 1020 wrote to memory of 2576	1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp	84
PID 1020 wrote to memory of 2576	1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp	84
PID 1020 wrote to memory of 1692	1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp	86
PID 1020 wrote to memory of 1692	1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp	86
PID 1020 wrote to memory of 1692	1020	66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp	86
PID 2576 wrote to memory of 2728	2576	net.exe	87
PID 2576 wrote to memory of 2728	2576	net.exe	87
PID 2576 wrote to memory of 2728	2576	net.exe	87

C:\Users\Admin\AppData\Local\Temp\66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.exe
"C:\Users\Admin\AppData\Local\Temp\66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1616
- C:\Users\Admin\AppData\Local\Temp\is-CIN5S.tmp\66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-CIN5S.tmp\66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp" /SL5="$601C0,3318290,54272,C:\Users\Admin\AppData\Local\Temp\66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.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:1020
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" pause divx_media_11303
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2576
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 pause divx_media_11303
      4⤵
      System Location Discovery: System Language Discovery
      PID:2728
- - C:\Users\Admin\AppData\Local\DivX Media Codec 2.4.7\divxmedia3.exe
    "C:\Users\Admin\AppData\Local\DivX Media Codec 2.4.7\divxmedia3.exe" -i
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:1692

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\DivX Media Codec 2.4.7\divxmedia3.exe

Filesize
3.3MB

MD5
ea7f7e86e60c1f5d573dd67a85f85f51

SHA1
cd6606727ff62e2866bcecdee9ef1e2623d61595

SHA256
89494b9f1278a92af5e2dc126f7a4bab91314c52e0696ab5b2f8c7776880085f

SHA512
d240682e55885ad18d171ff88a64d8e04423c463f10ad331d9fc8807d1615eab71ebd250a9ea1c050ed656c6d6329187d37df36d48abb644bc75f5fb74ef0912

Download Submit
C:\Users\Admin\AppData\Local\DivX Media Codec 2.4.7\sqlite3.dll

Filesize
630KB

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7JVKM.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-CIN5S.tmp\66c07ed1f5431bc670cd57cd47e843b73f6e7c3fa89b2bec50f7cfff1948e362.tmp

Filesize
687KB

MD5
f876c029f92fd23464624f93aa040831

SHA1
1cf7864c2071235e75d3de9fab44d12dc2063f47

SHA256
bf56bcdfe2a424461e28ffc282121a0ec93aafdb347ea8f1ec4fe0f06069a720

SHA512
d0af2b23732091981fceea720efb195218a6c5222bc85292cb2b3c063c16b317d193a2ddd8be3bfe7a4aa508132b7dd99ae874f1177cfc94e6bcbcfbdca852a6

Download Submit
memory/1020-48-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/1020-12-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/1616-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1616-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1616-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1692-60-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-74-0x00000000008D0000-0x0000000000972000-memory.dmp

Filesize
648KB

Download
memory/1692-43-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-51-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-53-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1692-52-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-56-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-42-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-64-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-68-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-72-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-47-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-80-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-82-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-85-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-89-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-93-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-97-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-101-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-103-0x00000000008D0000-0x0000000000972000-memory.dmp

Filesize
648KB

Download
memory/1692-104-0x00000000008D0000-0x0000000000972000-memory.dmp

Filesize
648KB

Download
memory/1692-108-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download
memory/1692-112-0x0000000000400000-0x0000000000758000-memory.dmp

Filesize
3.3MB

Download

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