yunsip | 92e305f594972a3ebedd25fbb71819d461260d37e355dd0e38256ae968410664

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
08/03/2025, 02:58

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General

Target

92e305f594972a3ebedd25fbb71819d461260d37e355dd0e38256ae968410664.dll
Size

675KB
MD5

1db234438d87f3c1723f3f3ab0515c72
SHA1

b6ac2feaee1e95ea0579ab307b4ec9c6d5c3adcb
SHA256

92e305f594972a3ebedd25fbb71819d461260d37e355dd0e38256ae968410664
SHA512

0ef07e27470dc3068be410880ca14c9c4ece74266710230bc9eeb8212b63154a668349022e7aaf50792531068cfc55e26574b870842b6033dbe1e95dc7f192cb
SSDEEP

6144:o6C5AXbMn7UI1FoV2gwTBlrIckPJYYYYYYYYYYYYn:o6RI1Fo/wT3cJYYYYYYYYYYYYn

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 2072 wrote to memory of 2596	2072	rundll32.exe	30
PID 2072 wrote to memory of 2596	2072	rundll32.exe	30
PID 2072 wrote to memory of 2596	2072	rundll32.exe	30
PID 2072 wrote to memory of 2596	2072	rundll32.exe	30
PID 2072 wrote to memory of 2596	2072	rundll32.exe	30
PID 2072 wrote to memory of 2596	2072	rundll32.exe	30
PID 2072 wrote to memory of 2596	2072	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\92e305f594972a3ebedd25fbb71819d461260d37e355dd0e38256ae968410664.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\92e305f594972a3ebedd25fbb71819d461260d37e355dd0e38256ae968410664.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2596

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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