yunsip | 55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3c

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
01-12-2024 03:35

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General

Target

55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3cN.dll
Size

739KB
MD5

ffdff067b5262cd0c16f99f4099dc190
SHA1

0b7593397d61ec50c820bac83e96b5e8086dcc61
SHA256

55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3c
SHA512

b01dfbf8e1fe7643ee10c61831f540267f7fcb8d7fea4b98948e40f4d30538adc6cd88c2fcb8cc08f7c57a2cab2fef0b1ade94f502ef5bf0774125b3f934a3c8
SSDEEP

3072:jDKpt9sSR0HUHPwZWLnWVfEAzV2IJIwTBftpmc+z+f3Q0n:jDgtfRQUHPw06MoV2nwTBlhm8P

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 2760 wrote to memory of 2868	2760	rundll32.exe	31
PID 2760 wrote to memory of 2868	2760	rundll32.exe	31
PID 2760 wrote to memory of 2868	2760	rundll32.exe	31
PID 2760 wrote to memory of 2868	2760	rundll32.exe	31
PID 2760 wrote to memory of 2868	2760	rundll32.exe	31
PID 2760 wrote to memory of 2868	2760	rundll32.exe	31
PID 2760 wrote to memory of 2868	2760	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3cN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\55f42a4b6183e54f9996e93ae67d163dd67dbcca0d147e9b92ab62c44eaf2f3cN.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2868

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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