yunsip | 55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3c

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2024, 03:35

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General

Target
55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3cN.dll
Size 739KB
Sample241201-d5e1sszpcj
SHA256 55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3c
MD5 ffdff067b5262cd0c16f99f4099dc190
SHA1 0b7593397d61ec50c820bac83e96b5e8086dcc61
SHA512 b01dfbf8e1fe7643ee10c61831f540267f7fcb8d7fea4b98948e40f4d30538adc6cd88c2fcb8cc08f7c57a2cab2fef0b1ade94f502ef5bf0774125b3f934a3c8
SSDEEP 3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0n:jDgtfRQUHPw06MoV2nwTBlhm8P
MD5 SHA1 SHA512 SSDEEP

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 4736 wrote to memory of 4860	4736	rundll32.exe	83
PID 4736 wrote to memory of 4860	4736	rundll32.exe	83
PID 4736 wrote to memory of 4860	4736	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3cN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3cN.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4860

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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