yunsip | d07bcda86226b3c4c62adb30c06804276e67c4de4feffaca059e85992aeaa780

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/03/2025, 17:27

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General

Target

JaffaCakes118_8d5b86e65191854d906cf0f1c146121b.dll
Size

309KB
MD5

8d5b86e65191854d906cf0f1c146121b
SHA1

205df9558903a30b74192e0206f729f609d4b917
SHA256

d07bcda86226b3c4c62adb30c06804276e67c4de4feffaca059e85992aeaa780
SHA512

15ff386d6caed25c29b69b35b9faa7a1c9f09d0c5245c8d4c6b3280eb085faacd99aa160d6feb80fdcb180579ea33082743cce4d94d89573937c3b36c925a16c
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0M:jDgtfRQUHPw06MoV2nwTBlhm8U

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 2336 wrote to memory of 1888	2336	rundll32.exe	30
PID 2336 wrote to memory of 1888	2336	rundll32.exe	30
PID 2336 wrote to memory of 1888	2336	rundll32.exe	30
PID 2336 wrote to memory of 1888	2336	rundll32.exe	30
PID 2336 wrote to memory of 1888	2336	rundll32.exe	30
PID 2336 wrote to memory of 1888	2336	rundll32.exe	30
PID 2336 wrote to memory of 1888	2336	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d5b86e65191854d906cf0f1c146121b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d5b86e65191854d906cf0f1c146121b.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1888

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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