yunsip | 49763120d6ab89b9a5d60c9430bced2ea62b658309ae78a4451764ff09129de5

Analysis

max time kernel
105s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
21/03/2025, 19:42

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General

Target

JaffaCakes118_847fb215195c9db9d81da6165e54b4b7.dll
Size

540KB
MD5

847fb215195c9db9d81da6165e54b4b7
SHA1

842ef9c7dbc32ffd60109aaf24ecf45cda7fd1a7
SHA256

49763120d6ab89b9a5d60c9430bced2ea62b658309ae78a4451764ff09129de5
SHA512

768f3d0978d5045a573d9ec1906aad900da7fba296af20f56cfa3f8b32a4e7e56e6ec67b615f3d48ce5f1f0387c3dadd9bdf117cdf640e2f0da0e7885ccc6906
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0V:jDgtfRQUHPw06MoV2nwTBlhm8d

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 2464 wrote to memory of 5148	2464	rundll32.exe	86
PID 2464 wrote to memory of 5148	2464	rundll32.exe	86
PID 2464 wrote to memory of 5148	2464	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_847fb215195c9db9d81da6165e54b4b7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2464
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_847fb215195c9db9d81da6165e54b4b7.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5148

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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