socks5systemz | 50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe

General

Target

50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.exe
Size

4.0MB
MD5

f2a965cd2c574cf05ad119afbea06248
SHA1

651fa87e6e7de510b2500a00e07d0ef5fb92e811
SHA256

50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe
SHA512

eb56dc653c05e1d34379d3866cbde889108ad4f787a85a5b1dfc31c6ceddbab3318e56307c553cd5f359e31787720f17c8a8f0bccbc4c0583c002afa1eeadcf7
SSDEEP

98304:I2Mc2zy0y/50IX7m9UJ52HQgAWR4mJMnIYsa6KwMnD2eICdlb9dC+D:eci0/z7KHQgAWR4UOIY16K/nD2zC/b5

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/2080-101-0x0000000000950000-0x00000000009F2000-memory.dmp	family_socks5systemz
behavioral2/memory/2080-125-0x0000000000950000-0x00000000009F2000-memory.dmp	family_socks5systemz
behavioral2/memory/2080-124-0x0000000000950000-0x00000000009F2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
4364	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp
2080	tckplayer.exe

Loads dropped DLL 1 IoCs

pid	Process
4364	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.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	141.98.234.31

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	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tckplayer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4364	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp
4364	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4364	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 4364	2268	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.exe	84
PID 2268 wrote to memory of 4364	2268	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.exe	84
PID 2268 wrote to memory of 4364	2268	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.exe	84
PID 4364 wrote to memory of 2080	4364	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp	85
PID 4364 wrote to memory of 2080	4364	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp	85
PID 4364 wrote to memory of 2080	4364	50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp	85

C:\Users\Admin\AppData\Local\Temp\50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.exe
"C:\Users\Admin\AppData\Local\Temp\50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Users\Admin\AppData\Local\Temp\is-LOF2C.tmp\50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-LOF2C.tmp\50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp" /SL5="$11005C,3964543,54272,C:\Users\Admin\AppData\Local\Temp\50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.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:4364
- - C:\Users\Admin\AppData\Local\TCKPlayer\tckplayer.exe
    "C:\Users\Admin\AppData\Local\TCKPlayer\tckplayer.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2080

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\TCKPlayer\tckplayer.exe

Filesize
2.6MB

MD5
6a15ee97b7d9a191e5f8cbbe630e34b9

SHA1
c4ef74cde47c5bbfae6490a760f70498ede72810

SHA256
40ff12ce659e9a199d0a62ea20f007f2c5f24951c2c756a297b1b604b95d331e

SHA512
30c81a9e533f537d95ab583331aff3ae22e613f17b1f34a552c91b39d5751c239a4d6e9b33a0042f8a9285a044a9d9303f88be7efc5fc139d3771b54d9fa380f

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-0RRL6.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-LOF2C.tmp\50d91506da0aa3c7c07762df0f5d751e77b2b8d59e2d23642bfd39485e16d6fe.tmp

Filesize
689KB

MD5
51ab2ddf1edcae381075807ce63b0627

SHA1
1d1848de8f1e017228ff4e80282106cbc83e25b6

SHA256
4eaf1ccf2c49cdf5fabaec14642b6b271faace1f7c90a795d3a4d5c2e0aaf019

SHA512
aafaeee9f1011a019044ba7eba73e98e7cd62437afc595dd4189b64969a20525b60e514b8727eb5834c540dff7a7a7d35cb69ff3f7aaf762395f77bcd0da68fa

Download Submit
memory/2080-91-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-114-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-132-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-76-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-77-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-80-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-129-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-124-0x0000000000950000-0x00000000009F2000-memory.dmp

Filesize
648KB

Download
memory/2080-84-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-85-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-88-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-125-0x0000000000950000-0x00000000009F2000-memory.dmp

Filesize
648KB

Download
memory/2080-94-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-97-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-100-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-101-0x0000000000950000-0x00000000009F2000-memory.dmp

Filesize
648KB

Download
memory/2080-107-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-110-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-111-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-123-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-117-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2080-120-0x0000000000400000-0x000000000069C000-memory.dmp

Filesize
2.6MB

Download
memory/2268-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2268-82-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2268-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4364-7-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/4364-81-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download

Analysis

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