yunsip | c0fba5d50be7652071f0304974b78e6f901631e6e5dc69b49734ec06da0a3202

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-08-2024 12:20

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General

Target

8c423c836aa94f42716053779da11880N.dll
Size

698KB
MD5

8c423c836aa94f42716053779da11880
SHA1

02e938de6ec2d0c2407e6580a68596bc701f5952
SHA256

c0fba5d50be7652071f0304974b78e6f901631e6e5dc69b49734ec06da0a3202
SHA512

5e851111ae7a076610573a576101c641f6da044ab1ea447a2a71c832a92557e10922288d1c9f34e86c1ddc46489311ed45d16c9da353b46130ba0cfa1014d5b3
SSDEEP

6144:o6C5AXbMn7UI1FoV2gwTBlrIckPJYYYYYYYYYYYYf:o6RI1Fo/wT3cJYYYYYYYYYYYYf

Score

10^/10

yunsip banker discovery trojan

Malware Config

Signatures

Yunsip
Remote backdoor which communicates with a C2 server to receive commands.
trojan banker yunsip
System Location Discovery: System Language Discovery 1 TTPs 1 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

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 5088 wrote to memory of 760	5088	rundll32.exe	rundll32.exe
PID 5088 wrote to memory of 760	5088	rundll32.exe	rundll32.exe
PID 5088 wrote to memory of 760	5088	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8c423c836aa94f42716053779da11880N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5088

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8c423c836aa94f42716053779da11880N.dll,#1
2⤵
- System Location Discovery: System Language Discovery
PID:760

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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