99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010

Analysis

max time kernel
167s
max time network
212s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
28-11-2022 04:27

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General

Target

99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010.exe
Size

129KB
MD5

b05827b477d68c75ec09dd9c069efc25
SHA1

4a79ff851f0f88f0da4c78e73f6096534c3774d7
SHA256

99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010
SHA512

5d0420200c12ab9fab997da36b28eda51342fc4dc0bb1607dd2aa56e20df808d7d0ea36f1fd7382768a56ab5c1e3f6504032a353dcedb46f9cd1a4ead1a7bcf5
SSDEEP

3072:rhR98zd/EtzAAa1roAl4bI+m/B6SVqCgQfBUnPy8L66iiSM:rhodEt8AMrmI+m/B6SVqCgQfBUPy8L6H

Score

7^/10

persistence

Malware Config

Signatures

Drops startup file 1 IoCs

Processes:

explorer.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ff22854f.exe explorer.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ff22854f.exe	explorer.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ff22854 = "C:\\ff22854f\\ff22854f.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*f22854 = "C:\\ff22854f\\ff22854f.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ff22854f = "C:\\Users\\Admin\\AppData\\Roaming\\ff22854f.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*f22854f = "C:\\Users\\Admin\\AppData\\Roaming\\ff22854f.exe"	explorer.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

58 ip-addr.es
87 myexternalip.com
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010.exeexplorer.exe

pid process

2484 99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010.exe
1316 explorer.exe

flow	ioc
58	ip-addr.es
87	myexternalip.com

pid	process
2484	99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010.exe
1316	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010.exeexplorer.exe

description	pid	process	target process
PID 2484 wrote to memory of 1316	2484	99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010.exe	explorer.exe
PID 2484 wrote to memory of 1316	2484	99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010.exe	explorer.exe
PID 2484 wrote to memory of 1316	2484	99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010.exe	explorer.exe
PID 1316 wrote to memory of 3088	1316	explorer.exe	svchost.exe
PID 1316 wrote to memory of 3088	1316	explorer.exe	svchost.exe
PID 1316 wrote to memory of 3088	1316	explorer.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010.exe
"C:\Users\Admin\AppData\Local\Temp\99cf5f08b0933da8a5785c8e8695e6afcc4975d56e986ed162ad1c9e6ec6f010.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2484

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\syswow64\explorer.exe"
2⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1316

C:\Windows\SysWOW64\svchost.exe
-k netsvcs
3⤵
PID:3088

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1316-132-0x0000000000000000-mapping.dmp

Download
memory/1316-133-0x00000000008E0000-0x0000000000905000-memory.dmp

Filesize
148KB

Download
memory/3088-134-0x0000000000000000-mapping.dmp

Download
memory/3088-135-0x0000000000EE0000-0x0000000000F05000-memory.dmp

Filesize
148KB

Download