yunsip | e8e2cad8bb65d004bb0b5eb04ffd0af4589bd961fa30ddc365cb9bf44ca8b944

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16/03/2025, 19:13

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General

Target

JaffaCakes118_7b688df0c01c94bc382eea24db4d9eb0.dll
Size

309KB
MD5

7b688df0c01c94bc382eea24db4d9eb0
SHA1

90d98b72f91cd8f4452a325c2ff1f4d364cba359
SHA256

e8e2cad8bb65d004bb0b5eb04ffd0af4589bd961fa30ddc365cb9bf44ca8b944
SHA512

1f92045979080028637e6be3382d41e98cb0b0471ebfffb6d15881dae8b534cde75c00990965c2a9998e48aca437ede499f52a1a00e72c7c0002aaef7f1f75ba
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0q:jDgtfRQUHPw06MoV2nwTBlhm8y

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 2168 wrote to memory of 2940	2168	rundll32.exe	31
PID 2168 wrote to memory of 2940	2168	rundll32.exe	31
PID 2168 wrote to memory of 2940	2168	rundll32.exe	31
PID 2168 wrote to memory of 2940	2168	rundll32.exe	31
PID 2168 wrote to memory of 2940	2168	rundll32.exe	31
PID 2168 wrote to memory of 2940	2168	rundll32.exe	31
PID 2168 wrote to memory of 2940	2168	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b688df0c01c94bc382eea24db4d9eb0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2168
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b688df0c01c94bc382eea24db4d9eb0.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2940

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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