wshrat | 47ef53bf5833e55b94c424f1a3560baf56bb672760e89fab43a0eb226720e265

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
26-07-2023 10:02

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General

Target

Purchase-Order-23726.vbs
Size

747KB
MD5

c1782dd257f96535b081857cd64e2598
SHA1

dcfc5c3fe03e591bc9a6cfb7b008a312eedf343b
SHA256

47ef53bf5833e55b94c424f1a3560baf56bb672760e89fab43a0eb226720e265
SHA512

b39e5eee7a3e8d33ba01ca022bdd564a4ef0c6f00c40adebebec4ee8a310855859fcc1b6834d4361654630518989196e1f0e38160e7feac462a021f52cfe0840
SSDEEP

1536:/MRtSdp+jIiYowCm2soUPRQnrtIoA7OUzpZeVpnYCsHg6sgxstnZDQUhKKMp:8jNm2LnJIoA7OB/tsRWnZup

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 28 IoCs

flow	pid	Process
4	2220	WScript.exe
6	2220	WScript.exe
8	2220	WScript.exe
9	2220	WScript.exe
11	2220	WScript.exe
12	2220	WScript.exe
13	2220	WScript.exe
15	2220	WScript.exe
16	2220	WScript.exe
17	2220	WScript.exe
19	2220	WScript.exe
20	2220	WScript.exe
21	2220	WScript.exe
23	2220	WScript.exe
24	2220	WScript.exe
25	2220	WScript.exe
27	2220	WScript.exe
28	2220	WScript.exe
29	2220	WScript.exe
31	2220	WScript.exe
32	2220	WScript.exe
33	2220	WScript.exe
35	2220	WScript.exe
36	2220	WScript.exe
37	2220	WScript.exe
39	2220	WScript.exe
40	2220	WScript.exe
41	2220	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase-Order-23726.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase-Order-23726.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\MACHINE\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Purchase-Order-23726 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Purchase-Order-23726.vbs\""	WScript.exe
Key created	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000\Software\Microsoft\Windows\CurrentVersion\Run\Purchase-Order-23726 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Purchase-Order-23726.vbs\""	WScript.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
3	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\Purchase-Order-23726.vbs"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:2220

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

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\U6AGJ71Z\json[1].json

Filesize
323B

MD5
0c17abb0ed055fecf0c48bb6e46eb4eb

SHA1
a692730c8ec7353c31b94a888f359edb54aaa4c8

SHA256
f41e99f954e33e7b0e39930ec8620bf29801efc44275c1ee6b5cfa5e1be202c0

SHA512
645a9f2f94461d8a187261b736949df398ece5cfbf1af8653d18d3487ec1269d9f565534c1e249c12f31b3b1a41a8512953b1e991b001fc1360059e3fd494ec3

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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase-Order-23726.vbs

Filesize
747KB

MD5
c1782dd257f96535b081857cd64e2598

SHA1
dcfc5c3fe03e591bc9a6cfb7b008a312eedf343b

SHA256
47ef53bf5833e55b94c424f1a3560baf56bb672760e89fab43a0eb226720e265

SHA512
b39e5eee7a3e8d33ba01ca022bdd564a4ef0c6f00c40adebebec4ee8a310855859fcc1b6834d4361654630518989196e1f0e38160e7feac462a021f52cfe0840

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads