yunsip | 3840a7b5e75ef197fd98a84f0f8b3e1829048aa766e8d0d77a1622fd2efdc564

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06/03/2025, 03:56

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General

Target

JaffaCakes118_54d973a82cf6aa7f14b02abb662ec7e0.dll
Size

634KB
MD5

54d973a82cf6aa7f14b02abb662ec7e0
SHA1

12f151b61b9e0aa9d4de5c435966a196141274a9
SHA256

3840a7b5e75ef197fd98a84f0f8b3e1829048aa766e8d0d77a1622fd2efdc564
SHA512

108bfe0b4c2ece8842a687ef6ae6b6f9fca6807463bae20d16a46192ec37abdfe42ba7655c8320a0754e83a3dba65f89c6a9926e5d575386cdaeff801e28cca0
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0i:jDgtfRQUHPw06MoV2nwTBlhm8K

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 1872 wrote to memory of 1992	1872	rundll32.exe	30
PID 1872 wrote to memory of 1992	1872	rundll32.exe	30
PID 1872 wrote to memory of 1992	1872	rundll32.exe	30
PID 1872 wrote to memory of 1992	1872	rundll32.exe	30
PID 1872 wrote to memory of 1992	1872	rundll32.exe	30
PID 1872 wrote to memory of 1992	1872	rundll32.exe	30
PID 1872 wrote to memory of 1992	1872	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_54d973a82cf6aa7f14b02abb662ec7e0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1872
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_54d973a82cf6aa7f14b02abb662ec7e0.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1992

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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