socks5systemz | 38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94

General

Target

38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe
Size

3.4MB
MD5

263d9c03423a1d91465d6de1589ea964
SHA1

99a919a959740e52636ded47b3e70b7df90a32ca
SHA256

38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94
SHA512

c1bcafc69fc5b298b94d1dfad6e66d7c21fbcb82a0134a9bcba461b83dbfe85f0d87e29bf53e61d55361a7ef15ae58c5889e90aa1cccfe14ffe196d3002b0e94
SSDEEP

98304:NGtp4G1Gdkfa0OjEBggsDW8CODmMwVfaloNprQd8XoJV:st2cfxOEBTZ8COCMwVfMUnXon

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2564-80-0x0000000002380000-0x0000000002422000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp
2564	capturn.exe

Loads dropped DLL 6 IoCs

pid	Process
2068	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe
2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp
2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp
2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp
2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp
2564	capturn.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	45.155.250.90

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	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.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	capturn.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp
2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2868	2068	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe	30
PID 2068 wrote to memory of 2868	2068	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe	30
PID 2068 wrote to memory of 2868	2068	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe	30
PID 2068 wrote to memory of 2868	2068	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe	30
PID 2068 wrote to memory of 2868	2068	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe	30
PID 2068 wrote to memory of 2868	2068	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe	30
PID 2068 wrote to memory of 2868	2068	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe	30
PID 2868 wrote to memory of 2616	2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp	31
PID 2868 wrote to memory of 2616	2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp	31
PID 2868 wrote to memory of 2616	2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp	31
PID 2868 wrote to memory of 2616	2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp	31
PID 2868 wrote to memory of 2564	2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp	33
PID 2868 wrote to memory of 2564	2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp	33
PID 2868 wrote to memory of 2564	2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp	33
PID 2868 wrote to memory of 2564	2868	38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp	33
PID 2616 wrote to memory of 2688	2616	net.exe	34
PID 2616 wrote to memory of 2688	2616	net.exe	34
PID 2616 wrote to memory of 2688	2616	net.exe	34
PID 2616 wrote to memory of 2688	2616	net.exe	34

C:\Users\Admin\AppData\Local\Temp\38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe
"C:\Users\Admin\AppData\Local\Temp\38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Users\Admin\AppData\Local\Temp\is-RKHCQ.tmp\38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-RKHCQ.tmp\38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp" /SL5="$400F4,3334481,54272,C:\Users\Admin\AppData\Local\Temp\38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.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:2868
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" pause capturn_11241
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2616
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 pause capturn_11241
      4⤵
      System Location Discovery: System Language Discovery
      PID:2688
- - C:\Users\Admin\AppData\Local\Capturn 1.0.1\capturn.exe
    "C:\Users\Admin\AppData\Local\Capturn 1.0.1\capturn.exe" -i
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:2564

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\Capturn 1.0.1\sqlite3.dll

Filesize
630KB

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
\Users\Admin\AppData\Local\Capturn 1.0.1\capturn.exe

Filesize
3.0MB

MD5
0f62c417d85955819f69532d8cfcc119

SHA1
639489630a190216a932cc984bf4d350ae2df6ac

SHA256
d7c187c048d7133fe7998ab0b5eb8d4f1bef086f13250317ba845b3acbf6e4c3

SHA512
28f3e73cff9bf7117b7a3626ed6fe44733cd13b6847427389c236cc866d39f48903846788f69b0271aac2123e30a07041c32a9df890556ed1b936cc51a047eab

Download Submit
\Users\Admin\AppData\Local\Temp\is-CVA95.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-CVA95.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-RKHCQ.tmp\38bd0e9753393119b1ff5feaf10c43aebf6c97e91dc3b118402220dd9cf91d94.tmp

Filesize
687KB

MD5
c2dae8e69629d29b66973882df40383f

SHA1
62efcd68f3cad57f06ff83ca34c532249d659360

SHA256
2cff4b2a1265960585799a8756d0f337fba1a90f00f8e38c7d29fbac014638e2

SHA512
3b01ba1839b38bf49716c36a95612fc08bd70e8a59697f7f0b545775fe815885e627b423f7ef6cc7a0038d63f9ea61f7f316176e0309fa3addc290e81845d68e

Download Submit
memory/2068-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2068-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2068-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2564-78-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-70-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-49-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-115-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-111-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-106-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-58-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/2564-57-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-59-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-62-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-66-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-47-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-74-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-102-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-80-0x0000000002380000-0x0000000002422000-memory.dmp

Filesize
648KB

Download
memory/2564-86-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-90-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-94-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2564-98-0x0000000000400000-0x0000000000709000-memory.dmp

Filesize
3.0MB

Download
memory/2868-10-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2868-44-0x0000000003C60000-0x0000000003F69000-memory.dmp

Filesize
3.0MB

Download
memory/2868-54-0x0000000003C60000-0x0000000003F69000-memory.dmp

Filesize
3.0MB

Download
memory/2868-53-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download

Analysis

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