yunsip | 8bb59767f80c1dd0b9f03f0eb11a42df1d020104ffb29234ba2cbac8a04a1ed3

Analysis

max time kernel
105s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20250313-en
resource tags

arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2025, 17:16

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General

Target

JaffaCakes118_8c9aab98311135cf45e48c455b0c679f.dll
Size

405KB
MD5

8c9aab98311135cf45e48c455b0c679f
SHA1

49971a374d88a34aba664b33b3d12dd63437e853
SHA256

8bb59767f80c1dd0b9f03f0eb11a42df1d020104ffb29234ba2cbac8a04a1ed3
SHA512

98810b59b6a5e050208ea2786f3bbf5ffd223f702a0e7f35174ac8ba42d6a133585f2c476963f76511c6cf23a80d8baad20788be1a8ef6fdfd2d2d11d8f60bcb
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0h:jDgtfRQUHPw06MoV2nwTBlhm8Z

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 3 IoCs

description	pid	Process	procid_target
PID 2144 wrote to memory of 2320	2144	rundll32.exe	86
PID 2144 wrote to memory of 2320	2144	rundll32.exe	86
PID 2144 wrote to memory of 2320	2144	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8c9aab98311135cf45e48c455b0c679f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2144
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8c9aab98311135cf45e48c455b0c679f.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2320

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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