b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b

Analysis

max time kernel
187s
max time network
206s
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

b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b.exe
Size

129KB
MD5

d77fe688327ca995e2fd98e557f67772
SHA1

12f451246e98e18418bbed8df55d847eb2d96222
SHA256

b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b
SHA512

47ccdc9d2375c40b6714d6a0aead86c5678e5dd00c2bb1484e1d7e0786126846a743ed51182d31133e2964bebf16bfa40f312761c1cfc26160e22e27fef26aea
SSDEEP

3072:B7RC+zd/EtzAAJ1rVAgCQXopj4B6SVqCgQfBUnPy8L66iiSM:B7JdEt8ATrdCQ4pj4B6SVqCgQfBUPy8S

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

Processes:

flow ioc

53 myexternalip.com
56 myexternalip.com
42 ip-addr.es
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b.exeexplorer.exe

pid process

1476 b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b.exe
2436 explorer.exe

flow	ioc
53	myexternalip.com
56	myexternalip.com
42	ip-addr.es

pid	process
1476	b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b.exe
2436	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b.exeexplorer.exe

description	pid	process	target process
PID 1476 wrote to memory of 2436	1476	b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b.exe	explorer.exe
PID 1476 wrote to memory of 2436	1476	b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b.exe	explorer.exe
PID 1476 wrote to memory of 2436	1476	b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b.exe	explorer.exe
PID 2436 wrote to memory of 2452	2436	explorer.exe	svchost.exe
PID 2436 wrote to memory of 2452	2436	explorer.exe	svchost.exe
PID 2436 wrote to memory of 2452	2436	explorer.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b.exe
"C:\Users\Admin\AppData\Local\Temp\b6555a8d62f03786498e06b1f673a3350fd83e374055cd91f3d99bf5873c594b.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1476

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:2436

C:\Windows\SysWOW64\svchost.exe
-k netsvcs
3⤵
PID:2452

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

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Downloads

memory/2436-132-0x0000000000000000-mapping.dmp

Download
memory/2436-133-0x0000000000D00000-0x0000000000D25000-memory.dmp

Filesize
148KB

Download
memory/2452-134-0x0000000000000000-mapping.dmp

Download
memory/2452-135-0x00000000004F0000-0x0000000000515000-memory.dmp

Filesize
148KB

Download