yunsip | 456eda4f4c35b2a03ea938f5dafd0ed029182599f646409f1555d439b1b8ee7d

Analysis

max time kernel
100s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
01/03/2025, 21:48

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General

Target

JaffaCakes118_3bcc70229f1b3a849c13a5b60227c4e2.dll
Size

395KB
MD5

3bcc70229f1b3a849c13a5b60227c4e2
SHA1

4c2d6c605e7fc600ecd33e717f2a1d9270cf0b54
SHA256

456eda4f4c35b2a03ea938f5dafd0ed029182599f646409f1555d439b1b8ee7d
SHA512

6cdcc67ce44d2f7fe24563babe48bb47c9c0fef0d5b1725dcab76562a3e9a65038a9816bf45adeae14b5137efbba65ae11057b188d972b925239170e0c22a8a1
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0o:jDgtfRQUHPw06MoV2nwTBlhm8A

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 1984 wrote to memory of 3356	1984	rundll32.exe	89
PID 1984 wrote to memory of 3356	1984	rundll32.exe	89
PID 1984 wrote to memory of 3356	1984	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3bcc70229f1b3a849c13a5b60227c4e2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3bcc70229f1b3a849c13a5b60227c4e2.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3356

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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