yunsip | 2b5f5f7917fb23c4b05b289ddc1137910f8930989432b7c9e64520d6d181bd85

Analysis

max time kernel
104s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2025, 18:20

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General

Target

JaffaCakes118_90fcd40d87075232b1eca2a5557bda02.dll
Size

416KB
MD5

90fcd40d87075232b1eca2a5557bda02
SHA1

aa59b45606d57ac2d18456bd28ee5bcacafc42e9
SHA256

2b5f5f7917fb23c4b05b289ddc1137910f8930989432b7c9e64520d6d181bd85
SHA512

67259500df4fd04667e72ea482d1ad8ca90c3f936a6e884b1a1fec378e2eb7c42c5bb2a975889873f74318692624ea59e27291bebaf36850095d695af3ec13e7
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0X:jDgtfRQUHPw06MoV2nwTBlhm8/

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 4724 wrote to memory of 1976	4724	rundll32.exe	87
PID 4724 wrote to memory of 1976	4724	rundll32.exe	87
PID 4724 wrote to memory of 1976	4724	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_90fcd40d87075232b1eca2a5557bda02.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_90fcd40d87075232b1eca2a5557bda02.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1976

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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