c25c1698395a2edd315158035660df240ab7e5cd43288fa87f207e07eec82d56

Analysis

max time kernel
56s
max time network
68s
platform
windows7_x64
resource
win7
submitted
09/07/2020, 08:24

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General

Target
jooyu.exe
Size 3.6MB
Sample200709-yndtx19eps
SHA256 c25c1698395a2edd315158035660df240ab7e5cd43288fa87f207e07eec82d56
MD5 37d5c635f8d3299b0a83c0e4c372716c
SHA1 161e81a01668f556a41a1c3e1a301c734c784c08
SHA512 18bf1be4b4c527e27452b71c34977f8f303a767a220640d8f134e9ef3fd8692307fbaa3931fbddf427ab33275bfaedac5cb471a12c4c74d35a725e7548727268
MD5 SHA1 SHA512

Score

8^/10

spyware persistence

Malware Config

Signatures

Loads dropped DLL 4 IoCs

pid	Process
1588	jooyu.exe
1588	jooyu.exe
1588	jooyu.exe
1588	jooyu.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 304	1588	jooyu.exe	24
PID 1588 wrote to memory of 304	1588	jooyu.exe	24
PID 1588 wrote to memory of 304	1588	jooyu.exe	24
PID 1588 wrote to memory of 304	1588	jooyu.exe	24
PID 1588 wrote to memory of 1516	1588	jooyu.exe	25
PID 1588 wrote to memory of 1516	1588	jooyu.exe	25
PID 1588 wrote to memory of 1516	1588	jooyu.exe	25
PID 1588 wrote to memory of 1516	1588	jooyu.exe	25

Executes dropped EXE 2 IoCs

pid	Process
304	jfiag_gg.exe
1516	jfiag_gg.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\kissq = "C:\\Users\\Admin\\AppData\\Local\\Temp\\kissq.exe"	jooyu.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

C:\Users\Admin\AppData\Local\Temp\jooyu.exe
"C:\Users\Admin\AppData\Local\Temp\jooyu.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
- Adds Run entry to start application
PID:1588
- C:\Users\Admin\AppData\Local\Temp\jfiag_gg.exe
  C:\Users\Admin\AppData\Local\Temp\jfiag_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fjgha23_fa.txt
  2⤵
  - Executes dropped EXE
  PID:304
- C:\Users\Admin\AppData\Local\Temp\jfiag_gg.exe
  C:\Users\Admin\AppData\Local\Temp\jfiag_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fjgha23_fa.txt
  2⤵
  - Executes dropped EXE
  PID:1516

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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