yunsip | d29e1b09adf66c9bf943b52a092df44a8a42398e38a61077d22289982c36ca6a

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
01/10/2024, 15:44

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General

Target

d29e1b09adf66c9bf943b52a092df44a8a42398e38a61077d22289982c36ca6aN.dll
Size

504KB
MD5

6d265f444a361d83e69b35f1db70d130
SHA1

57d8c3beb7b90fdef825a3b3f5ffd29497316ef6
SHA256

d29e1b09adf66c9bf943b52a092df44a8a42398e38a61077d22289982c36ca6a
SHA512

a206b813f63a3d53e23120218473b21240fac3ea6f1e8275761548d4df66e84251e337595ec22f4648977291b3724d239f59a7ced1ed26f44db88db888b08db8
SSDEEP

3072:o6pU5Y1DXnbMn7Uzkop61/dAzV2O3XwTBftrm2YedGf3QKZDR:o6C5AXbMn7UI1FoV2gwTBlrIckPz

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

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 2660 wrote to memory of 2656	2660	rundll32.exe	30
PID 2660 wrote to memory of 2656	2660	rundll32.exe	30
PID 2660 wrote to memory of 2656	2660	rundll32.exe	30
PID 2660 wrote to memory of 2656	2660	rundll32.exe	30
PID 2660 wrote to memory of 2656	2660	rundll32.exe	30
PID 2660 wrote to memory of 2656	2660	rundll32.exe	30
PID 2660 wrote to memory of 2656	2660	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d29e1b09adf66c9bf943b52a092df44a8a42398e38a61077d22289982c36ca6aN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d29e1b09adf66c9bf943b52a092df44a8a42398e38a61077d22289982c36ca6aN.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2656

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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