systembc | 3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7

Analysis

max time kernel
115s
max time network
47s
platform
windows7_x64
resource
win7-20220414-en
submitted
27-04-2022 15:58

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General

Target

3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe
Size

267KB
MD5

e213b1c3dc9cb0f7771d299d2cf7a346
SHA1

85229bc75fb370973c78afef7409554bc891dcf1
SHA256

3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7
SHA512

9bd45559c7da861711a8f706a8c2b5dc83916ff44f988ea86eb8794daf128b5ad426b954ff58356cfc521c165fb129bdbeafe286d4184250ca66b621125514e4

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

advertrex20.xyz:4044

gentexman37.xyz:4044

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Executes dropped EXE 1 IoCs

Processes:

txrhvch.exe

pid process

2024 txrhvch.exe

pid	process
2024	txrhvch.exe

Drops file in Windows directory 2 IoCs

Processes:

3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

description	ioc	process
File created	C:\Windows\Tasks\txrhvch.job	3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe
File opened for modification	C:\Windows\Tasks\txrhvch.job	3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

pid process

452 3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

pid	process
452	3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1092 wrote to memory of 2024	1092	taskeng.exe	txrhvch.exe
PID 1092 wrote to memory of 2024	1092	taskeng.exe	txrhvch.exe
PID 1092 wrote to memory of 2024	1092	taskeng.exe	txrhvch.exe
PID 1092 wrote to memory of 2024	1092	taskeng.exe	txrhvch.exe

C:\Users\Admin\AppData\Local\Temp\3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe
"C:\Users\Admin\AppData\Local\Temp\3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:452

C:\Windows\system32\taskeng.exe
taskeng.exe {AE9C13B4-812B-4566-83B5-17F94AA83FD8} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1092

C:\ProgramData\uxilffe\txrhvch.exe
C:\ProgramData\uxilffe\txrhvch.exe start
2⤵
- Executes dropped EXE
PID:2024

MITRE ATT&CK Matrix

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Downloads

C:\ProgramData\uxilffe\txrhvch.exe
Filesize
267KB

MD5
e213b1c3dc9cb0f7771d299d2cf7a346

SHA1
85229bc75fb370973c78afef7409554bc891dcf1

SHA256
3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7

SHA512
9bd45559c7da861711a8f706a8c2b5dc83916ff44f988ea86eb8794daf128b5ad426b954ff58356cfc521c165fb129bdbeafe286d4184250ca66b621125514e4

Download Submit
C:\ProgramData\uxilffe\txrhvch.exe
Filesize
267KB

MD5
e213b1c3dc9cb0f7771d299d2cf7a346

SHA1
85229bc75fb370973c78afef7409554bc891dcf1

SHA256
3d2a6335cf267e52f65d919aeea421c75f47878f4139a80842080485b72d2ac7

SHA512
9bd45559c7da861711a8f706a8c2b5dc83916ff44f988ea86eb8794daf128b5ad426b954ff58356cfc521c165fb129bdbeafe286d4184250ca66b621125514e4

Download Submit
memory/452-54-0x0000000075361000-0x0000000075363000-memory.dmp

Filesize
8KB

Download
memory/452-55-0x0000000000020000-0x0000000000026000-memory.dmp

Filesize
24KB

Download
memory/452-56-0x0000000000030000-0x0000000000039000-memory.dmp

Filesize
36KB

Download
memory/452-57-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download
memory/2024-59-0x0000000000000000-mapping.dmp

Download