yunsip | 6eda6c9556d5d5f3d9babe9a6a3c6ea657268dab63725adf8af4cbc74ddd4c4b

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/03/2025, 05:07

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General

Target

JaffaCakes118_50a718fe636a436a3042384c8469390d.dll
Size

333KB
MD5

50a718fe636a436a3042384c8469390d
SHA1

6196277c46ae61a187073c8305a0d3855cb828ad
SHA256

6eda6c9556d5d5f3d9babe9a6a3c6ea657268dab63725adf8af4cbc74ddd4c4b
SHA512

c73ef6286d89839d0e2a053759efd71daaf1d6467f1847f5c15e4d22e00577c549ec6ce3309e55c92f101b78652b31189067eaa72e3ca1506e7c1a9835512e35
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0N:jDgtfRQUHPw06MoV2nwTBlhm81

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 2128 wrote to memory of 2664	2128	rundll32.exe	30
PID 2128 wrote to memory of 2664	2128	rundll32.exe	30
PID 2128 wrote to memory of 2664	2128	rundll32.exe	30
PID 2128 wrote to memory of 2664	2128	rundll32.exe	30
PID 2128 wrote to memory of 2664	2128	rundll32.exe	30
PID 2128 wrote to memory of 2664	2128	rundll32.exe	30
PID 2128 wrote to memory of 2664	2128	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50a718fe636a436a3042384c8469390d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_50a718fe636a436a3042384c8469390d.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2664

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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