yunsip | 0d91a98a93e97831d50ae986d264fe8cc2041534b5945148b9b3f3e80e3f31eb

Analysis

max time kernel
119s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/03/2025, 18:18

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General

Target

JaffaCakes118_90d717b801a2458aac529cb79e7903e7.dll
Size

389KB
MD5

90d717b801a2458aac529cb79e7903e7
SHA1

feda97e6c4c3fc68f027eccf12d317cbb9ec6fea
SHA256

0d91a98a93e97831d50ae986d264fe8cc2041534b5945148b9b3f3e80e3f31eb
SHA512

8eaa7c4a7bdb40efceb1f0446f94a623b0b44be83488af3c1d036c7fdc01fb9383bcc618793ca4910e327a001f35e23f0b324a2acc9b03fb8c19e4a032ff3be6
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0e:jDgtfRQUHPw06MoV2nwTBlhm8m

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 2084 wrote to memory of 2164	2084	rundll32.exe	31
PID 2084 wrote to memory of 2164	2084	rundll32.exe	31
PID 2084 wrote to memory of 2164	2084	rundll32.exe	31
PID 2084 wrote to memory of 2164	2084	rundll32.exe	31
PID 2084 wrote to memory of 2164	2084	rundll32.exe	31
PID 2084 wrote to memory of 2164	2084	rundll32.exe	31
PID 2084 wrote to memory of 2164	2084	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_90d717b801a2458aac529cb79e7903e7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_90d717b801a2458aac529cb79e7903e7.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2164

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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