socks5systemz | 79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336

General

Target

79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.exe
Size

4.4MB
MD5

14c3686e04af406dbc1b8387a03cf129
SHA1

56ef670c09a5c388858c831ff852a14534faba21
SHA256

79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336
SHA512

664cd1ccf7b840f86adbc77b4d42a75602d2deb1274afdb8b3d01aeb099c8c5b4096b7a04cdc480157266d6c097ad7e3a3416cb5948c7b23715c6762e05157b9
SSDEEP

98304:NgRH+/mYa01Y8epn4CUa5+B9NdbmqBKDhkj+B4HVdZ:7Fa0+4CULfdRMmj+a1P

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1888-84-0x0000000002630000-0x00000000026D2000-memory.dmp	family_socks5systemz
behavioral1/memory/1888-107-0x0000000002630000-0x00000000026D2000-memory.dmp	family_socks5systemz
behavioral1/memory/1888-108-0x0000000002630000-0x00000000026D2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp
1336	avicodec32.exe
1888	avicodec32.exe

Loads dropped DLL 3 IoCs

pid	Process
2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp
2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp
2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.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	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 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	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	avicodec32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	avicodec32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp
2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4508 wrote to memory of 2752	4508	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.exe	84
PID 4508 wrote to memory of 2752	4508	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.exe	84
PID 4508 wrote to memory of 2752	4508	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.exe	84
PID 2752 wrote to memory of 1336	2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp	88
PID 2752 wrote to memory of 1336	2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp	88
PID 2752 wrote to memory of 1336	2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp	88
PID 2752 wrote to memory of 1888	2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp	89
PID 2752 wrote to memory of 1888	2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp	89
PID 2752 wrote to memory of 1888	2752	79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp	89

C:\Users\Admin\AppData\Local\Temp\79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.exe
"C:\Users\Admin\AppData\Local\Temp\79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Users\Admin\AppData\Local\Temp\is-CMRVD.tmp\79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-CMRVD.tmp\79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp" /SL5="$60240,4354660,54272,C:\Users\Admin\AppData\Local\Temp\79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.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:2752
- - C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe
    "C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1336
- - C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe
    "C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe" -s
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1888

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe

Filesize
4.3MB

MD5
302fbff3fe4f6361fe53803e51968d87

SHA1
6f31fe73afaa9476fbaee7555daf9d5a484c2db4

SHA256
05c9dd85fabc0818f5beb30b12c1925492d37c79a629676092281609eabf124e

SHA512
a895a69e93dc5305111a78e0792e8b37f37edce246e0e5bcaa20e4e9f1a94c9fd2f019fa9cbb7f3992bcc25b9d27b9fba255aff01a1bd07da2b7725009350679

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-8FO6D.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-8FO6D.tmp\_isetup\_isdecmp.dll

Filesize
13KB

MD5
a813d18268affd4763dde940246dc7e5

SHA1
c7366e1fd925c17cc6068001bd38eaef5b42852f

SHA256
e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

SHA512
b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-CMRVD.tmp\79dbea223477d53051efdc11a3a9ea453ff05b6801d47af847f2b766e4f83336.tmp

Filesize
692KB

MD5
eaa7a9c561bbd459afcd2892d7b7baf6

SHA1
b40c1ffbc0a0c458651dab72935cc9623603be2b

SHA256
7fee7eb7f03ef1c7bf594344f206457c477975efeedb2e244b4cdc5d2c9365dd

SHA512
67c45e6cac674945d54ef614d573f14df8d07de10931a97e1c2d1e1b2b9bbb3fb029c608214370f400243a3093e0b114e1d53d09df7c18ad9fca3453ba149aa5

Download Submit
memory/1336-59-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1336-63-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1336-60-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1336-58-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-69-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-100-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-115-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-66-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-112-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-108-0x0000000002630000-0x00000000026D2000-memory.dmp

Filesize
648KB

Download
memory/1888-107-0x0000000002630000-0x00000000026D2000-memory.dmp

Filesize
648KB

Download
memory/1888-72-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-75-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-78-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-81-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-84-0x0000000002630000-0x00000000026D2000-memory.dmp

Filesize
648KB

Download
memory/1888-88-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-91-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-94-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-97-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-106-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/1888-103-0x0000000000400000-0x0000000000847000-memory.dmp

Filesize
4.3MB

Download
memory/2752-13-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2752-68-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4508-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4508-67-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4508-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing