yunsip | dbd813098be4da4aa74a5aee9d1bd40a55c8548ec1b668bf8932607f2c68b17d

Analysis

max time kernel
92s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
04/03/2025, 17:59

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General

Target

JaffaCakes118_4edb4581ce158b9e96498f3d69051809.dll
Size

206KB
MD5

4edb4581ce158b9e96498f3d69051809
SHA1

7a8ddecd91264758ebfd22d200d2c6134e1dc397
SHA256

dbd813098be4da4aa74a5aee9d1bd40a55c8548ec1b668bf8932607f2c68b17d
SHA512

ec3394e130b9f70d368d0c2282c016813a466a649f2962a3b6f829bd5b7efdf3b1a06e3e123dcb5bc11a8b17e2607a2de0a946566aba080536fb04bbb567b70d
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0b: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 1084 wrote to memory of 4604	1084	rundll32.exe	86
PID 1084 wrote to memory of 4604	1084	rundll32.exe	86
PID 1084 wrote to memory of 4604	1084	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4edb4581ce158b9e96498f3d69051809.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1084
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4edb4581ce158b9e96498f3d69051809.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4604

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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