yunsip | 7c4164410368ee75ceebb77f0147af93ea1ef0e916798e6cf2534282e46541cc

Analysis

max time kernel
93s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2025, 23:45

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General

Target

JaffaCakes118_44c57b44cd48ebef999c8786cb86863d.dll
Size

279KB
MD5

44c57b44cd48ebef999c8786cb86863d
SHA1

395c84378a3c1f0bd537118cb691eec84a310bc5
SHA256

7c4164410368ee75ceebb77f0147af93ea1ef0e916798e6cf2534282e46541cc
SHA512

eb1b86aa12b831cdd8684dd66a8da8025c2b6a5f6fe237f8987a95715f0d07a413ba193ffaf55c8533fa685b13dd0b177c5cc0cb336c2d0af2c38b0fab2a71dd
SSDEEP

3072:VDKpt9sSR0HUHPwZWLnWVfEAzV2IywTBftZmc+z+f3Q02:VDgtfRQUHPw06MoV2vwTBlxm8+

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 1276 wrote to memory of 4468	1276	rundll32.exe	83
PID 1276 wrote to memory of 4468	1276	rundll32.exe	83
PID 1276 wrote to memory of 4468	1276	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_44c57b44cd48ebef999c8786cb86863d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_44c57b44cd48ebef999c8786cb86863d.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4468

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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