yunsip | 726cb1ae3af5d9a86a06eff37c1576f2332bed3b1d8f59b1a36afc59ecb8e09c

Analysis

max time kernel
138s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
02/03/2025, 00:41

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General

Target

726cb1ae3af5d9a86a06eff37c1576f2332bed3b1d8f59b1a36afc59ecb8e09c.dll
Size

1.0MB
MD5

ba3f5b4f09f4ee4c5060ff6ec987b8a0
SHA1

75f7ba8e6b020829ab94fdca3417da729728c858
SHA256

726cb1ae3af5d9a86a06eff37c1576f2332bed3b1d8f59b1a36afc59ecb8e09c
SHA512

31bcfd2f5aba173a66bc7bcc8fee67a6784193333f1e296cdb5c02fb5c4c15232c20d5ce93a2df2f5a31ffad6a3b30ca1845df36b5b627bd9174d4d65f75aa83
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q05:jDgtfRQUHPw06MoV2nwTBlhm8h

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 1932 wrote to memory of 1836	1932	rundll32.exe	89
PID 1932 wrote to memory of 1836	1932	rundll32.exe	89
PID 1932 wrote to memory of 1836	1932	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\726cb1ae3af5d9a86a06eff37c1576f2332bed3b1d8f59b1a36afc59ecb8e09c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\726cb1ae3af5d9a86a06eff37c1576f2332bed3b1d8f59b1a36afc59ecb8e09c.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1836

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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