yunsip | 1688a40c93a8e429d40310c272b1dfa6f24e9df1e4691e8b0c2f9afb0c00ce1d

Analysis

max time kernel
93s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
22-02-2025 15:11

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General

Target

JaffaCakes118_1a76c4556f4391e33bc6d56193307843.dll
Size

341KB
MD5

1a76c4556f4391e33bc6d56193307843
SHA1

8294183d7e3bc181233ad26aaadcf2731ebc7dc0
SHA256

1688a40c93a8e429d40310c272b1dfa6f24e9df1e4691e8b0c2f9afb0c00ce1d
SHA512

628b447b2799aeb6155505a505bb7fa644ec2fc4d33f46aaca324377232e9d785cadee35241c31c0008be6cf9ee12b7af53728055b33a240648dd194f6f4814c
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0L:jDgtfRQUHPw06MoV2nwTBlhm8z

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 3728 wrote to memory of 3424	3728	rundll32.exe	83
PID 3728 wrote to memory of 3424	3728	rundll32.exe	83
PID 3728 wrote to memory of 3424	3728	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a76c4556f4391e33bc6d56193307843.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3728
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1a76c4556f4391e33bc6d56193307843.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3424

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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