yunsip | 60abe7d8aadf5af0426791f5dcea6c7d13b17e0e81afa41ff2cefbedc2948821

Analysis

max time kernel
1s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2025, 07:58

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General

Target

JaffaCakes118_73b31ab23da0974d4cb9b9886a564a24.dll
Size

383KB
MD5

73b31ab23da0974d4cb9b9886a564a24
SHA1

4010bb655b08b496b3fc050f14755e8ba5565b64
SHA256

60abe7d8aadf5af0426791f5dcea6c7d13b17e0e81afa41ff2cefbedc2948821
SHA512

4a627b5919628df272db937d18bd2358063707099df2de5428d6b53a29f6290d2ea929f01c8019edf6b25886d35ef874efd16b8a6751b2300261d54da4f11425
SSDEEP

3072:aDKpt9sSR0HUHPwZWLnWVfEAzV2IMwTBftZmc+z+f3Q0c:aDgtfRQUHPw06MoV2dwTBlxm80

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 3 IoCs

description	pid	Process	procid_target
PID 5376 wrote to memory of 5760	5376	rundll32.exe	81
PID 5376 wrote to memory of 5760	5376	rundll32.exe	81
PID 5376 wrote to memory of 5760	5376	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73b31ab23da0974d4cb9b9886a564a24.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5376
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73b31ab23da0974d4cb9b9886a564a24.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5760

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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