yunsip | 24cdf72cffd9e2741cb98a0b0c2999ebd43213bb745bff99b09aef31522503c0

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26/01/2025, 20:13

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General

Target

JaffaCakes118_38d3ef59908649a92b60d4af7e57f14d.dll
Size

354KB
MD5

38d3ef59908649a92b60d4af7e57f14d
SHA1

bc2c31ad2f71ba29bc00860c731b9bbafdaecc66
SHA256

24cdf72cffd9e2741cb98a0b0c2999ebd43213bb745bff99b09aef31522503c0
SHA512

c55ce681d8d2a09493085314c3b269746b6514b59b06a34a58219c4f46d49aa9d7cd67911b59acdc52e32ccaf13e0798b68ddb9194bb54b65b6d56903ec10416
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0A:jDgtfRQUHPw06MoV2nwTBlhm84

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 2120 wrote to memory of 2344	2120	rundll32.exe	31
PID 2120 wrote to memory of 2344	2120	rundll32.exe	31
PID 2120 wrote to memory of 2344	2120	rundll32.exe	31
PID 2120 wrote to memory of 2344	2120	rundll32.exe	31
PID 2120 wrote to memory of 2344	2120	rundll32.exe	31
PID 2120 wrote to memory of 2344	2120	rundll32.exe	31
PID 2120 wrote to memory of 2344	2120	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38d3ef59908649a92b60d4af7e57f14d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_38d3ef59908649a92b60d4af7e57f14d.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2344

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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