wshrat | 47ef53bf5833e55b94c424f1a3560baf56bb672760e89fab43a0eb226720e265

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
27/07/2023, 13:55

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General

Target
NA_47ef53bf5833e55b94c424f1a_JC.vbs
Size 747KB
Sample230727-q8btrsff4w
SHA256 47ef53bf5833e55b94c424f1a3560baf56bb672760e89fab43a0eb226720e265
MD5 c1782dd257f96535b081857cd64e2598
SHA1 dcfc5c3fe03e591bc9a6cfb7b008a312eedf343b
SHA512 b39e5eee7a3e8d33ba01ca022bdd564a4ef0c6f00c40adebebec4ee8a310855859fcc1b6834d4361654630518989196e1f0e38160e7feac462a021f52cfe0840
SSDEEP 1536:/MRtSdp+jIiYowCm2soUPRQnrtIoA7OUzpZeVpnYCsHg6sgxstnZDQUhKKMp:8jNm2LnJIoA7OB/tsRWnZup
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wshrat persistence trojan

Malware Config

Extracted

Family

wshrat

http://chongmei33.publicvm.com:7045

Signatures

WSHRAT
WSHRAT is a variant of Houdini worm and has vbs and js variants.
trojan wshrat

Blocklisted process makes network request 23 IoCs

flow	pid	Process
18	4928	WScript.exe
32	4928	WScript.exe
34	4928	WScript.exe
48	4928	WScript.exe
49	4928	WScript.exe
50	4928	WScript.exe
51	4928	WScript.exe
55	4928	WScript.exe
57	4928	WScript.exe
60	4928	WScript.exe
65	4928	WScript.exe
66	4928	WScript.exe
67	4928	WScript.exe
68	4928	WScript.exe
69	4928	WScript.exe
74	4928	WScript.exe
86	4928	WScript.exe
87	4928	WScript.exe
88	4928	WScript.exe
89	4928	WScript.exe
90	4928	WScript.exe
91	4928	WScript.exe
92	4928	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NA_47ef53bf5833e55b94c424f1a_JC.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NA_47ef53bf5833e55b94c424f1a_JC.vbs	WScript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NA_47ef53bf5833e55b94c424f1a_JC = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\NA_47ef53bf5833e55b94c424f1a_JC.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NA_47ef53bf5833e55b94c424f1a_JC = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\NA_47ef53bf5833e55b94c424f1a_JC.vbs\""	WScript.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.

flow	ioc
17	ip-api.com
24	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\NA_47ef53bf5833e55b94c424f1a_JC.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

json[1].json

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\7QVM26BR\json[1].json
Size 323B
SHA256 f41e99f954e33e7b0e39930ec8620bf29801efc44275c1ee6b5cfa5e1be202c0
MD5 0c17abb0ed055fecf0c48bb6e46eb4eb
SHA1 a692730c8ec7353c31b94a888f359edb54aaa4c8
SHA512 645a9f2f94461d8a187261b736949df398ece5cfbf1af8653d18d3487ec1269d9f565534c1e249c12f31b3b1a41a8512953b1e991b001fc1360059e3fd494ec3
MD5 SHA1 SHA512

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NA_47ef53bf5833e55b94c424f1a_JC.vbs

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NA_47ef53bf5833e55b94c424f1a_JC.vbs
Size 747KB
SHA256 47ef53bf5833e55b94c424f1a3560baf56bb672760e89fab43a0eb226720e265
MD5 c1782dd257f96535b081857cd64e2598
SHA1 dcfc5c3fe03e591bc9a6cfb7b008a312eedf343b
SHA512 b39e5eee7a3e8d33ba01ca022bdd564a4ef0c6f00c40adebebec4ee8a310855859fcc1b6834d4361654630518989196e1f0e38160e7feac462a021f52cfe0840
SSDEEP 1536:/MRtSdp+jIiYowCm2soUPRQnrtIoA7OUzpZeVpnYCsHg6sgxstnZDQUhKKMp:8jNm2LnJIoA7OB/tsRWnZup
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads