yunsip | f2fbe11c2631ee30d5c3b50cffe0215b7e409367f6aabccfa44727d8ac919efe

Analysis

max time kernel
14s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
23/03/2025, 15:33

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General

Target

JaffaCakes118_876c1f654b5f98992c9220f300633ff7.dll
Size

401KB
MD5

876c1f654b5f98992c9220f300633ff7
SHA1

6155b747d6ae621d9b16b5d8d79fb3c43f9aea18
SHA256

f2fbe11c2631ee30d5c3b50cffe0215b7e409367f6aabccfa44727d8ac919efe
SHA512

25df9e6111001acd38c98b4f793b59f0c639c9102df54d6e833a0293a659d515ace4603730422266ad4302d96c5264149617a5d49ffafa4b199912ae8705d722
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0l: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 7 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 2628	2824	rundll32.exe	29
PID 2824 wrote to memory of 2628	2824	rundll32.exe	29
PID 2824 wrote to memory of 2628	2824	rundll32.exe	29
PID 2824 wrote to memory of 2628	2824	rundll32.exe	29
PID 2824 wrote to memory of 2628	2824	rundll32.exe	29
PID 2824 wrote to memory of 2628	2824	rundll32.exe	29
PID 2824 wrote to memory of 2628	2824	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_876c1f654b5f98992c9220f300633ff7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2824
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_876c1f654b5f98992c9220f300633ff7.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2628

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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