yunsip | 4cf32eb270f3423555935f12dcc9a5063188495c271bf7e963bb08684627d55f

Analysis

max time kernel
26s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25/02/2025, 05:52

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General

Target

4cf32eb270f3423555935f12dcc9a5063188495c271bf7e963bb08684627d55fN.dll
Size

528KB
MD5

724ea1cce2960a6a6c63a99606704490
SHA1

31c679c9315bb14cc9c4f0fc70a694db7a8f71b9
SHA256

4cf32eb270f3423555935f12dcc9a5063188495c271bf7e963bb08684627d55f
SHA512

800f4556c4d4fe2cff2275edc0eb39be3c8126af947bf5508cf00d7148deb13455aba993f1a52f181876ec3d9e2b3a40d3cc1960501e0cc1c10b829f55417a28
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0q:jDgtfRQUHPw06MoV2nwTBlhm8i

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 2728 wrote to memory of 2940	2728	rundll32.exe	31
PID 2728 wrote to memory of 2940	2728	rundll32.exe	31
PID 2728 wrote to memory of 2940	2728	rundll32.exe	31
PID 2728 wrote to memory of 2940	2728	rundll32.exe	31
PID 2728 wrote to memory of 2940	2728	rundll32.exe	31
PID 2728 wrote to memory of 2940	2728	rundll32.exe	31
PID 2728 wrote to memory of 2940	2728	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4cf32eb270f3423555935f12dcc9a5063188495c271bf7e963bb08684627d55fN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2728
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4cf32eb270f3423555935f12dcc9a5063188495c271bf7e963bb08684627d55fN.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2940

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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