yunsip | 23fdf99cf1786df11e54fab195e1c2e5bc03ff3a9cf453f179f0e76dee42ed44

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24/02/2025, 22:43

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General

Target

23fdf99cf1786df11e54fab195e1c2e5bc03ff3a9cf453f179f0e76dee42ed44N.dll
Size

523KB
MD5

5ab7fae18148357ea20c757dd2564800
SHA1

ecf3136ecb02ab9cf728a699acaa3703c3d4fb5d
SHA256

23fdf99cf1786df11e54fab195e1c2e5bc03ff3a9cf453f179f0e76dee42ed44
SHA512

e42c344f14652030b96eadc37761accc8c0cd19189f09b77b667b2003ece3264595520322df98962668b6524d39457df3f4bb998a5ef9f5df7a554af57550ec1
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0F:jDgtfRQUHPw06MoV2nwTBlhm8d

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 1292 wrote to memory of 2360	1292	rundll32.exe	30
PID 1292 wrote to memory of 2360	1292	rundll32.exe	30
PID 1292 wrote to memory of 2360	1292	rundll32.exe	30
PID 1292 wrote to memory of 2360	1292	rundll32.exe	30
PID 1292 wrote to memory of 2360	1292	rundll32.exe	30
PID 1292 wrote to memory of 2360	1292	rundll32.exe	30
PID 1292 wrote to memory of 2360	1292	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\23fdf99cf1786df11e54fab195e1c2e5bc03ff3a9cf453f179f0e76dee42ed44N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1292
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\23fdf99cf1786df11e54fab195e1c2e5bc03ff3a9cf453f179f0e76dee42ed44N.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2360

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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