yunsip | 77a0c90db93a612d4ebe697bb8548f5ca27522b8f426267ff47ba8af421dd545

Analysis

max time kernel
103s
max time network
144s
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, 17:40

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General

Target

JaffaCakes118_8e885af41b57f66b0c170e8ca085a159.dll
Size

566KB
MD5

8e885af41b57f66b0c170e8ca085a159
SHA1

2a9bcaa5a593055e17a77fb8bae45783c99de8c4
SHA256

77a0c90db93a612d4ebe697bb8548f5ca27522b8f426267ff47ba8af421dd545
SHA512

08d19a52f39a2ee0f17c27f9f21c873d373e44ca1a9696b840412195db7b772541fce06d83dbc8cc7de4bd67a96fa0036f9a3d94b144b77f0619230eeb8f3c72
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0Z:jDgtfRQUHPw06MoV2nwTBlhm8x

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 4044 wrote to memory of 1336	4044	rundll32.exe	87
PID 4044 wrote to memory of 1336	4044	rundll32.exe	87
PID 4044 wrote to memory of 1336	4044	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8e885af41b57f66b0c170e8ca085a159.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4044
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8e885af41b57f66b0c170e8ca085a159.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1336

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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