yunsip | 4b5ed9e586ea0b7b54080904c19ce65ab41439b52b0005638e114849b8e915c3

Analysis

max time kernel
16s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
06-12-2024 13:25

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General

Target

4b5ed9e586ea0b7b54080904c19ce65ab41439b52b0005638e114849b8e915c3N.dll
Size

721KB
MD5

de83fa95ca16b32c5bb60ffaf344fe40
SHA1

91af3043972bb6bc70d4bea0d226d898fc2c5d82
SHA256

4b5ed9e586ea0b7b54080904c19ce65ab41439b52b0005638e114849b8e915c3
SHA512

14cf7ea560478254653d3ab959a61a50c990e2501faf1581a51b21f864d7264d9bab76c3c5486a28017eacf536e32f66efa724180a44af72dc19672451c736b3
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

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 2296 wrote to memory of 2308	2296	rundll32.exe	30
PID 2296 wrote to memory of 2308	2296	rundll32.exe	30
PID 2296 wrote to memory of 2308	2296	rundll32.exe	30
PID 2296 wrote to memory of 2308	2296	rundll32.exe	30
PID 2296 wrote to memory of 2308	2296	rundll32.exe	30
PID 2296 wrote to memory of 2308	2296	rundll32.exe	30
PID 2296 wrote to memory of 2308	2296	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4b5ed9e586ea0b7b54080904c19ce65ab41439b52b0005638e114849b8e915c3N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4b5ed9e586ea0b7b54080904c19ce65ab41439b52b0005638e114849b8e915c3N.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2308

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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