yunsip | aec2f7d5b536575616385aa91e8695615bc709caa1048dc62000dee2b85e53e7

Analysis

max time kernel
93s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20250211-en
resource tags

arch:x64arch:x86image:win10v2004-20250211-enlocale:en-usos:windows10-2004-x64system
submitted
15-02-2025 23:15

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General

Target

aec2f7d5b536575616385aa91e8695615bc709caa1048dc62000dee2b85e53e7N.dll
Size

402KB
MD5

78bb27f26868c17a54e8c190a6ee9380
SHA1

3e2894ed9233426fad2159f146bea8fb5d6a7ed0
SHA256

aec2f7d5b536575616385aa91e8695615bc709caa1048dc62000dee2b85e53e7
SHA512

0af18bac3aa8242bd1830ff897b7cf7b289f1ac66a961f6025c7d62e205ac9b0194fa7889779d0a61b54f0577fcfde79615e54c5359917007bcb2b97b1d5d491
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0w:jDgtfRQUHPw06MoV2nwTBlhm8I

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
26	4100	Process not Found

System Location Discovery: System Language Discovery 1 TTPs 2 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1052	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3252 wrote to memory of 2840	3252	rundll32.exe	89
PID 3252 wrote to memory of 2840	3252	rundll32.exe	89
PID 3252 wrote to memory of 2840	3252	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\aec2f7d5b536575616385aa91e8695615bc709caa1048dc62000dee2b85e53e7N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3252
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\aec2f7d5b536575616385aa91e8695615bc709caa1048dc62000dee2b85e53e7N.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2840

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI0IiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODM0MTAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NTUzNjg2NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1NDY5OTI5MjM3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1052

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

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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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