socks5systemz | 1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8

General

Target

1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.exe
Size

6.0MB
MD5

e613e0a246a6dce8b7a535ae6185338e
SHA1

19072cdd868bdfb1e5d2712bdb2ac2e690546a2a
SHA256

1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8
SHA512

87908f7516aafa4b457a2e241108edde8e18510bde2909ecd3711032a01fa3cf3bc7bb5d5702a3680cb58f9a1072ada25a1f609e01320e1a0f22abdb0c6892b0
SSDEEP

98304:NU7ie+Lspd95c3DtqR0v7ql06oaiRxnPmDa8iyDD8zLmnLFfr2dmp:heTd927qEThPm5RwzSLFfKS

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/3564-99-0x0000000000E40000-0x0000000000EE2000-memory.dmp	family_socks5systemz
behavioral2/memory/3564-128-0x0000000000E40000-0x0000000000EE2000-memory.dmp	family_socks5systemz
behavioral2/memory/3564-127-0x0000000000E40000-0x0000000000EE2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp
3564	screenstudio32.exe

Loads dropped DLL 2 IoCs

pid	Process
4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp
3564	screenstudio32.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	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	screenstudio32.exe
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	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp
4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 4348	4964	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.exe	84
PID 4964 wrote to memory of 4348	4964	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.exe	84
PID 4964 wrote to memory of 4348	4964	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.exe	84
PID 4348 wrote to memory of 1028	4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp	87
PID 4348 wrote to memory of 1028	4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp	87
PID 4348 wrote to memory of 1028	4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp	87
PID 4348 wrote to memory of 3564	4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp	89
PID 4348 wrote to memory of 3564	4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp	89
PID 4348 wrote to memory of 3564	4348	1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp	89
PID 1028 wrote to memory of 4384	1028	net.exe	90
PID 1028 wrote to memory of 4384	1028	net.exe	90
PID 1028 wrote to memory of 4384	1028	net.exe	90

C:\Users\Admin\AppData\Local\Temp\1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.exe
"C:\Users\Admin\AppData\Local\Temp\1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4964
- C:\Users\Admin\AppData\Local\Temp\is-2EKON.tmp\1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-2EKON.tmp\1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp" /SL5="$702AC,5998691,54272,C:\Users\Admin\AppData\Local\Temp\1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.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:4348
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" pause screenstudio_11173
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1028
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 pause screenstudio_11173
      4⤵
      System Location Discovery: System Language Discovery
      PID:4384
- - C:\Users\Admin\AppData\Local\Screen Studio 1.41\screenstudio32.exe
    "C:\Users\Admin\AppData\Local\Screen Studio 1.41\screenstudio32.exe" -i
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:3564

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\Screen Studio 1.41\screenstudio32.exe

Filesize
7.1MB

MD5
7bbe369eab15d8106f1fe041c75aaca3

SHA1
1fa604ab7670b9d888b9d5cdc281d23ca42b3406

SHA256
833126c39f087a18289e590870e7ec447ffebf14df6b325c879ba9949797c547

SHA512
9968f1309f913d919b80f02c3be9de9626d4fe54dbef98bc8c4eff6478b44381c5cc6d95837d0992975a85f54f5efd053360ae225f7d1c2480e600e469fe0747

Download Submit
C:\Users\Admin\AppData\Local\Screen Studio 1.41\sqlite3.dll

Filesize
630KB

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2EKON.tmp\1c851a6c4b66fdfd101c01e876bd0a09cb99c2051e911d864c8c350829c435d8.tmp

Filesize
692KB

MD5
4d3a2bb8d7a7dfcfeee20f95757d29e4

SHA1
4ca66ee00b950e6c45c09263b0e451039c572e96

SHA256
88f7d0bc0c2cea9ac3ad806480310c9deae405ba505f6a19f9591115b6cbc57d

SHA512
920d30524b4e1bf7cb3556a578459be4e9122e8c8716e34310fd70ae1deded50bad8bf7a03a46db46557b2e5500a523511a0bb9ddacf2dd966016e98a7cc6e74

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-SK17A.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/3564-77-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-113-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-136-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-68-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-71-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-72-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-132-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-127-0x0000000000E40000-0x0000000000EE2000-memory.dmp

Filesize
648KB

Download
memory/3564-76-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-78-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/3564-128-0x0000000000E40000-0x0000000000EE2000-memory.dmp

Filesize
648KB

Download
memory/3564-81-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-85-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-89-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-93-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-97-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-99-0x0000000000E40000-0x0000000000EE2000-memory.dmp

Filesize
648KB

Download
memory/3564-105-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-109-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-125-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-117-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/3564-121-0x0000000000400000-0x0000000000B24000-memory.dmp

Filesize
7.1MB

Download
memory/4348-16-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4348-73-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4964-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4964-74-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4964-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download

Analysis

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