yunsip | d5e53e568dbca612ee3718058d226333eacd6c415d88f3c01e6e8d454be26efd

Analysis

max time kernel
120s
max time network
126s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
01/03/2025, 01:06

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General

Target

JaffaCakes118_35b6ba535fe7b89b08de619ff2ac7ea9.dll
Size

395KB
MD5

35b6ba535fe7b89b08de619ff2ac7ea9
SHA1

5ee7d7caedc7db9635e8146cb427dd0c4e8d81f3
SHA256

d5e53e568dbca612ee3718058d226333eacd6c415d88f3c01e6e8d454be26efd
SHA512

e9c37db11c57a6c26b0d478a0c9a57d205154cd49123b9c1e08760f9f0330d712ee5c49a8ea0c6307e51666160af5a4eb34444a27ad1e55bec26bbbff33870e5
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0Y:jDgtfRQUHPw06MoV2nwTBlhm8A

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 2004 wrote to memory of 2200	2004	rundll32.exe	30
PID 2004 wrote to memory of 2200	2004	rundll32.exe	30
PID 2004 wrote to memory of 2200	2004	rundll32.exe	30
PID 2004 wrote to memory of 2200	2004	rundll32.exe	30
PID 2004 wrote to memory of 2200	2004	rundll32.exe	30
PID 2004 wrote to memory of 2200	2004	rundll32.exe	30
PID 2004 wrote to memory of 2200	2004	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_35b6ba535fe7b89b08de619ff2ac7ea9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_35b6ba535fe7b89b08de619ff2ac7ea9.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2200

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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