yunsip | ef3e5d20ae9606750e7b0c0e5dd5c5e30d7c78c0f96210ff4ada2da5ae52c281

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2025, 23:43

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General

Target

ef3e5d20ae9606750e7b0c0e5dd5c5e30d7c78c0f96210ff4ada2da5ae52c281.dll
Size

517KB
MD5

fca7f6234517086826084a4685ddb77f
SHA1

35817ca29e20a58321074b95aab0fa394ac22088
SHA256

ef3e5d20ae9606750e7b0c0e5dd5c5e30d7c78c0f96210ff4ada2da5ae52c281
SHA512

ebf03678795a9dff85800dba235cb71afafb333d872b96ddfab0014d6d208a758b040821fb78e80f26db78d508f44cfa91ad92572ccc9aeb09c7e8dc019ff566
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0G:jDgtfRQUHPw06MoV2nwTBlhm8e

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
Yunsip family
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

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

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4568 wrote to memory of 4296	4568	rundll32.exe	84
PID 4568 wrote to memory of 4296	4568	rundll32.exe	84
PID 4568 wrote to memory of 4296	4568	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef3e5d20ae9606750e7b0c0e5dd5c5e30d7c78c0f96210ff4ada2da5ae52c281.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4568
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef3e5d20ae9606750e7b0c0e5dd5c5e30d7c78c0f96210ff4ada2da5ae52c281.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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