yunsip | 61ccb46be1bfb167612ffb15d04b6af466c71255587e151fdca3f24f01d0ea0a

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01/03/2025, 14:58

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General

Target

JaffaCakes118_39ba11409956f77369cb2d12f1c6f841.dll
Size

217KB
MD5

39ba11409956f77369cb2d12f1c6f841
SHA1

c84f20ded7effe03f0aee315b8b1875b81786310
SHA256

61ccb46be1bfb167612ffb15d04b6af466c71255587e151fdca3f24f01d0ea0a
SHA512

ec590c3a0d06843ef5a60a1fba8754bd0ec75617c1ae41ab6926e669ca1399aa6a1ca767943f16ebc18b1ae58469c1b3c08bf800da0b8dbb17f4ef92c790e90f
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0f:jDgtfRQUHPw06MoV2nwTBlhm83

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 2704 wrote to memory of 2784	2704	rundll32.exe	30
PID 2704 wrote to memory of 2784	2704	rundll32.exe	30
PID 2704 wrote to memory of 2784	2704	rundll32.exe	30
PID 2704 wrote to memory of 2784	2704	rundll32.exe	30
PID 2704 wrote to memory of 2784	2704	rundll32.exe	30
PID 2704 wrote to memory of 2784	2704	rundll32.exe	30
PID 2704 wrote to memory of 2784	2704	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39ba11409956f77369cb2d12f1c6f841.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39ba11409956f77369cb2d12f1c6f841.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2784

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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