wshrat | 48bc766326068e078cf258dea70d49dcce265e4e6dbf18f1a0ce28d310f6a89a

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
01-09-2023 19:59

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General

Target

Purchase_Order.pdf.js
Size

7KB
MD5

e6345728433a16afa4f7a0d51341aa92
SHA1

b9d2abb57a98cc815feec3b09a213ef0917c54e6
SHA256

48bc766326068e078cf258dea70d49dcce265e4e6dbf18f1a0ce28d310f6a89a
SHA512

dda5942e836b848f85d62b0dd37bdf453e4e46133d59b4267a947ad9005dcaa958e9b635fad4da1e913c5b6481aec0860d7a7971defb671290c6a1c1bb5e8b33
SSDEEP

96:BxIeyahwb8yHBmtQ+VUVQVPvVNVdVLmhHoi:/F7Pu+myBHzg

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 25 IoCs

flow	pid	Process
2	1816	wscript.exe
6	1816	wscript.exe
8	1816	wscript.exe
19	4764	WScript.exe
21	4764	WScript.exe
22	4764	WScript.exe
23	4764	WScript.exe
37	4764	WScript.exe
38	4764	WScript.exe
39	4764	WScript.exe
40	4764	WScript.exe
43	4764	WScript.exe
44	4764	WScript.exe
45	4764	WScript.exe
48	4764	WScript.exe
50	4764	WScript.exe
52	4764	WScript.exe
53	4764	WScript.exe
54	4764	WScript.exe
55	4764	WScript.exe
56	4764	WScript.exe
57	4764	WScript.exe
58	4764	WScript.exe
62	4764	WScript.exe
63	4764	WScript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JGWJBL = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\JGWJBL.vbs\""	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JGWJBL = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\JGWJBL.vbs\""	WScript.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2848203831-2014322062-3611574811-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1816 wrote to memory of 4764	1816	wscript.exe	82
PID 1816 wrote to memory of 4764	1816	wscript.exe	82

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Purchase_Order.pdf.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1816
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\JGWJBL.vbs"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:4764

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\JGWJBL.vbs

Filesize
231KB

MD5
788d9b6fd542ea9680d7fd61e3424aec

SHA1
eb4929d2f663fa2bdf3ce6265c85036f4aa88e41

SHA256
7384901adc43848e36b00b3a5bd4a1c9743533d81e4fc33f8bcdec0e8e9a0077

SHA512
81ff571735f6c09ec06fa09e8174ce8bc6907eb0f786296f53d6147a0998014a5c2336700d7d01abada1000ba2dfeeeabae2b626cdcee0851d1c5433f6f5a94d

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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JGWJBL.vbs

Filesize
231KB

MD5
788d9b6fd542ea9680d7fd61e3424aec

SHA1
eb4929d2f663fa2bdf3ce6265c85036f4aa88e41

SHA256
7384901adc43848e36b00b3a5bd4a1c9743533d81e4fc33f8bcdec0e8e9a0077

SHA512
81ff571735f6c09ec06fa09e8174ce8bc6907eb0f786296f53d6147a0998014a5c2336700d7d01abada1000ba2dfeeeabae2b626cdcee0851d1c5433f6f5a94d

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads