Malware Analysis Report

2025-08-11 07:28

Sample ID 240803-pdrfasxelb
Target 2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f
SHA256 2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f
Tags
socks5systemz botnet discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f

Threat Level: Known bad

The file 2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Socks5Systemz

Detect Socks5Systemz Payload

Loads dropped DLL

Executes dropped EXE

Unexpected DNS network traffic destination

Checks installed software on the system

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-03 12:13

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-03 12:13

Reported

2024-08-03 12:15

Platform

win10v2004-20240802-en

Max time kernel

143s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe"

Signatures

Detect Socks5Systemz Payload

Description Indicator Process Target
N/A N/A N/A N/A

Socks5Systemz

botnet socks5systemz

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 141.98.234.31 N/A N/A

Checks installed software on the system

discovery

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2752 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp
PID 2752 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp
PID 2752 wrote to memory of 1916 N/A C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp
PID 1916 wrote to memory of 4240 N/A C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe
PID 1916 wrote to memory of 4240 N/A C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe
PID 1916 wrote to memory of 4240 N/A C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe
PID 1916 wrote to memory of 3244 N/A C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe
PID 1916 wrote to memory of 3244 N/A C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe
PID 1916 wrote to memory of 3244 N/A C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe

"C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe"

C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp

"C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp" /SL5="$70050,4038749,54272,C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe"

C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe

"C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe" -i

C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe

"C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
HK 141.98.234.31:53 cergcbi.net udp
CH 185.196.8.214:80 cergcbi.net tcp
US 8.8.8.8:53 31.234.98.141.in-addr.arpa udp
US 8.8.8.8:53 214.8.196.185.in-addr.arpa udp
US 8.8.8.8:53 214.143.182.52.in-addr.arpa udp
CH 185.196.8.214:80 cergcbi.net tcp

Files

memory/2752-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2752-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-B13TC.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp

MD5 f2401276f4e0f70c3aa6106d682479c5
SHA1 65bc28f6da79ad6c101b63efd11fa1660d944fb8
SHA256 b739f981bcb90a93b3f5bed7d9d9b2a816b9917dd24a4e612930383514bb4c8b
SHA512 0bce116b84c04fdd7c083e4275bbca41ceb8a453c54a09748d620e87b3d168076920b2c1c87f5b1d3c92b53a6b827c44ddaf5a532aafd0d421675c7bda5cacc9

memory/1916-10-0x0000000000400000-0x00000000004BD000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-62CC5.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe

MD5 52483397249647515f3fa56b6cda6661
SHA1 b3162f84b3e8496c61b5d518ab9e7c9f3da9d6e4
SHA256 a6e6dccedee360266faa256172ba1225da67d0fbf78dae0cc541c6fbe0bef996
SHA512 2e9dc86a71c23f60349847b77a3aaf8c892dd5386c33425967420b3ac0e0bfd537caa6e97b22beba98c67a63981fd37197067ee9ad7f101e46e27d735a9a0999

memory/4240-52-0x0000000000400000-0x0000000000849000-memory.dmp

memory/4240-53-0x0000000000400000-0x0000000000849000-memory.dmp

memory/4240-55-0x0000000000400000-0x0000000000849000-memory.dmp

memory/2752-59-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1916-60-0x0000000000400000-0x00000000004BD000-memory.dmp

memory/3244-61-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-64-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-67-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-70-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-73-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-76-0x0000000000CA0000-0x0000000000D42000-memory.dmp

memory/3244-78-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-83-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-86-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-89-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-92-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-95-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-98-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-101-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3244-105-0x0000000000400000-0x0000000000849000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-03 12:13

Reported

2024-08-03 12:15

Platform

win11-20240802-en

Max time kernel

142s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe"

Signatures

Detect Socks5Systemz Payload

Description Indicator Process Target
N/A N/A N/A N/A

Socks5Systemz

botnet socks5systemz

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 141.98.234.31 N/A N/A

Checks installed software on the system

discovery

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4832 wrote to memory of 4444 N/A C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp
PID 4832 wrote to memory of 4444 N/A C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp
PID 4832 wrote to memory of 4444 N/A C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp
PID 4444 wrote to memory of 3592 N/A C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe
PID 4444 wrote to memory of 3592 N/A C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe
PID 4444 wrote to memory of 3592 N/A C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe
PID 4444 wrote to memory of 3452 N/A C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe
PID 4444 wrote to memory of 3452 N/A C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe
PID 4444 wrote to memory of 3452 N/A C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe

"C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe"

C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp

"C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp" /SL5="$50118,4038749,54272,C:\Users\Admin\AppData\Local\Temp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.exe"

C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe

"C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe" -i

C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe

"C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
HK 141.98.234.31:53 bobxibn.com udp
CH 185.196.8.214:80 bobxibn.com tcp

Files

memory/4832-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4832-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-BSVTI.tmp\2c378a01bc643c91d21f2458b39ebad0dffdf84ddb6c176978e75496f3227a9f.tmp

MD5 f2401276f4e0f70c3aa6106d682479c5
SHA1 65bc28f6da79ad6c101b63efd11fa1660d944fb8
SHA256 b739f981bcb90a93b3f5bed7d9d9b2a816b9917dd24a4e612930383514bb4c8b
SHA512 0bce116b84c04fdd7c083e4275bbca41ceb8a453c54a09748d620e87b3d168076920b2c1c87f5b1d3c92b53a6b827c44ddaf5a532aafd0d421675c7bda5cacc9

memory/4444-12-0x0000000000400000-0x00000000004BD000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-6U8CC.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Jeengle\jeengle.exe

MD5 52483397249647515f3fa56b6cda6661
SHA1 b3162f84b3e8496c61b5d518ab9e7c9f3da9d6e4
SHA256 a6e6dccedee360266faa256172ba1225da67d0fbf78dae0cc541c6fbe0bef996
SHA512 2e9dc86a71c23f60349847b77a3aaf8c892dd5386c33425967420b3ac0e0bfd537caa6e97b22beba98c67a63981fd37197067ee9ad7f101e46e27d735a9a0999

memory/3592-52-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3592-54-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3592-56-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-59-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-60-0x0000000000400000-0x0000000000849000-memory.dmp

memory/4832-61-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4444-62-0x0000000000400000-0x00000000004BD000-memory.dmp

memory/3452-63-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-66-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-67-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-68-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-71-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-74-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-77-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-80-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-81-0x0000000002700000-0x00000000027A2000-memory.dmp

memory/3452-87-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-90-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-93-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-96-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-99-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-102-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-106-0x0000000000400000-0x0000000000849000-memory.dmp

memory/3452-109-0x0000000000400000-0x0000000000849000-memory.dmp