yunsip | cfd67f1a3099e1a89df15c7ea74ad7a6a1a1bef779a5cea2776e08b921b3db43

Analysis

max time kernel
103s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
16/03/2025, 17:24

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General

Target

JaffaCakes118_7b1ac090c05a7b7f0410676a41e9d034.dll
Size

224KB
MD5

7b1ac090c05a7b7f0410676a41e9d034
SHA1

d50379ceb1b278bb7f91222ace646ae051d14851
SHA256

cfd67f1a3099e1a89df15c7ea74ad7a6a1a1bef779a5cea2776e08b921b3db43
SHA512

2e7dbd59de9b99a35cec52c0845ba154344590e99cd0c8a5cb655d7304c729cc5741125ec519cabd10799726af27c8d718649c22b1fff353a9fe5f82a93a3336
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q00:jDgtfRQUHPw06MoV2nwTBlhm8M

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 4564 wrote to memory of 2712	4564	rundll32.exe	85
PID 4564 wrote to memory of 2712	4564	rundll32.exe	85
PID 4564 wrote to memory of 2712	4564	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b1ac090c05a7b7f0410676a41e9d034.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4564
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b1ac090c05a7b7f0410676a41e9d034.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2712

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

Windows 7 deprecation

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