yunsip | e571fce8489950dc3ce37d4b19ee7959577e19c328e0254b89360f94b98ca48b

Analysis

max time kernel
84s
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, 07:22

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General

Target

e571fce8489950dc3ce37d4b19ee7959577e19c328e0254b89360f94b98ca48bN.dll
Size

752KB
MD5

a99a8ec46cf0f0a5e40089fd95aa3170
SHA1

51d3e2e47db699f0a3e11154ce7075b5b1af16ab
SHA256

e571fce8489950dc3ce37d4b19ee7959577e19c328e0254b89360f94b98ca48b
SHA512

bea5d4750ac556ea013e2049e1f54cfee5534e7d28c42b34abe97cea94339051d45bfed6eddaf56658e33ad8a492962741f107e662a4a0d937f0073944affc60
SSDEEP

6144:o6C5AXbMn7UI1FoV2gwTBlrIckPJYYYYYYYYYYYYa:o6RI1Fo/wT3cJYYYYYYYYYYYYa

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 3028 wrote to memory of 2776	3028	rundll32.exe	31
PID 3028 wrote to memory of 2776	3028	rundll32.exe	31
PID 3028 wrote to memory of 2776	3028	rundll32.exe	31
PID 3028 wrote to memory of 2776	3028	rundll32.exe	31
PID 3028 wrote to memory of 2776	3028	rundll32.exe	31
PID 3028 wrote to memory of 2776	3028	rundll32.exe	31
PID 3028 wrote to memory of 2776	3028	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e571fce8489950dc3ce37d4b19ee7959577e19c328e0254b89360f94b98ca48bN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e571fce8489950dc3ce37d4b19ee7959577e19c328e0254b89360f94b98ca48bN.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2776

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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