yunsip | 43eb20d530fc140308e2c9e48d4d4b82b8b47a2e3d8f6a82e1490d8951879633

Analysis

max time kernel
122s
max time network
127s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
05/03/2025, 18:43

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General

Target

JaffaCakes118_533018e504335e97f8040c699b3a5d92.dll
Size

320KB
MD5

533018e504335e97f8040c699b3a5d92
SHA1

bcfa1a250623e9eefd2954008bb0fa94d21f8a91
SHA256

43eb20d530fc140308e2c9e48d4d4b82b8b47a2e3d8f6a82e1490d8951879633
SHA512

7ab5d301bf6363dcfba6028324ef92dc8ec5dbb9a1b2cdfca88222540e8dc8b8d8116bfa8d8839cc05b21b7416393ce278021f6b9ad3733b5584d4f13a55c765
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0q:jDgtfRQUHPw06MoV2nwTBlhm8C

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 2092 wrote to memory of 2816	2092	rundll32.exe	30
PID 2092 wrote to memory of 2816	2092	rundll32.exe	30
PID 2092 wrote to memory of 2816	2092	rundll32.exe	30
PID 2092 wrote to memory of 2816	2092	rundll32.exe	30
PID 2092 wrote to memory of 2816	2092	rundll32.exe	30
PID 2092 wrote to memory of 2816	2092	rundll32.exe	30
PID 2092 wrote to memory of 2816	2092	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_533018e504335e97f8040c699b3a5d92.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_533018e504335e97f8040c699b3a5d92.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816

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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