yunsip | c764c87af52e9f3c53e8d46ab5ceb4c951179d890a9012ea39e842c3d3efa627

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
03-11-2024 07:02

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General

Target

c764c87af52e9f3c53e8d46ab5ceb4c951179d890a9012ea39e842c3d3efa627N.dll
Size

699KB
MD5

b5991e162cb779b6ac9c48ce7544fc80
SHA1

157cc86db5f6b8c679cb63a01a8a7c81f87bdfb6
SHA256

c764c87af52e9f3c53e8d46ab5ceb4c951179d890a9012ea39e842c3d3efa627
SHA512

99c40e36d477f92078540b0e7b2ea3e07c27e4fd622263bf915a033f9822e419ed732b55d553ec0b51628dff80a8e6fa732be09ecc556e8ad4ec9799fa264178
SSDEEP

6144:o6C5AXbMn7UI1FoV2gwTBlrIckPJYYYYYYYYYYYYv:o6RI1Fo/wT3cJYYYYYYYYYYYYv

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

Processes:

rundll32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exe

description	pid	Process	procid_target
PID 2828 wrote to memory of 2816	2828	rundll32.exe	30
PID 2828 wrote to memory of 2816	2828	rundll32.exe	30
PID 2828 wrote to memory of 2816	2828	rundll32.exe	30
PID 2828 wrote to memory of 2816	2828	rundll32.exe	30
PID 2828 wrote to memory of 2816	2828	rundll32.exe	30
PID 2828 wrote to memory of 2816	2828	rundll32.exe	30
PID 2828 wrote to memory of 2816	2828	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c764c87af52e9f3c53e8d46ab5ceb4c951179d890a9012ea39e842c3d3efa627N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2828
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c764c87af52e9f3c53e8d46ab5ceb4c951179d890a9012ea39e842c3d3efa627N.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816

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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