wshrat | b6c3470de534cbaee5c02142a41970c83dce64f83922826c7a916520332d318a

General

Target

ORDER-241091799.PDF.js
Size

7KB
MD5

e1daa8253602476d0ddd51e91e406a1a
SHA1

10b0e9306019e58356a38074e609da3040da6641
SHA256

4126a6f8a65fdb58a76b7af70974711560c58943c16466666cd8099ba2d117ac
SHA512

70687606118a4599da950600ef7529c9c941c1ce524104512c8e3c852d1f81ab40710c1f4df6f4e3f95da01e8da9c2f35d6658f706667b55c4d4a817d32e7c3c
SSDEEP

96:BmbAkRJ1vz3bYLEGU37ybeCwLHtYFCbvA:BmbAkRJ1vTbYLEGo7ybeCwLHmFCbvA

Score

10^/10

wshrat execution persistence trojan

Malware Config

Extracted

Family

wshrat

C2

http://chongmei33.publicvm.com:7044

Signatures

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

Blocklisted process makes network request 53 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
1	4808	wscript.exe
17	4380	wscript.exe
25	4380	wscript.exe
26	4380	wscript.exe
27	4380	wscript.exe
28	4380	wscript.exe
41	4380	wscript.exe
43	4380	wscript.exe
44	4380	wscript.exe
45	4380	wscript.exe
46	4380	wscript.exe
47	4380	wscript.exe
52	4380	wscript.exe
53	4380	wscript.exe
54	4380	wscript.exe
55	4380	wscript.exe
56	4380	wscript.exe
62	4380	wscript.exe
64	4380	wscript.exe
65	4380	wscript.exe
66	4380	wscript.exe
67	4380	wscript.exe
68	4380	wscript.exe
69	4380	wscript.exe
70	4380	wscript.exe
71	4380	wscript.exe
72	4380	wscript.exe
75	4380	wscript.exe
76	4380	wscript.exe
77	4380	wscript.exe
78	4380	wscript.exe
79	4380	wscript.exe
80	4380	wscript.exe
81	4380	wscript.exe
82	4380	wscript.exe
83	4380	wscript.exe
84	4380	wscript.exe
85	4380	wscript.exe
86	4380	wscript.exe
87	4380	wscript.exe
88	4380	wscript.exe
89	4380	wscript.exe
90	4380	wscript.exe
91	4380	wscript.exe
92	4380	wscript.exe
93	4380	wscript.exe
94	4380	wscript.exe
95	4380	wscript.exe
96	4380	wscript.exe
97	4380	wscript.exe
98	4380	wscript.exe
99	4380	wscript.exe
100	4380	wscript.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

wscript.exeWScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

Processes:

WScript.exewscript.exe

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

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

WScript.exewscript.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEWZOM = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\SEWZOM.vbs\""	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEWZOM = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\SEWZOM.vbs\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEWZOM = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\SEWZOM.vbs\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEWZOM = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\SEWZOM.vbs\""	WScript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exeWScript.exe

description	pid	process	target process
PID 4808 wrote to memory of 2260	4808	wscript.exe	WScript.exe
PID 4808 wrote to memory of 2260	4808	wscript.exe	WScript.exe
PID 2260 wrote to memory of 4380	2260	WScript.exe	wscript.exe
PID 2260 wrote to memory of 4380	2260	WScript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ORDER-241091799.PDF.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\SEWZOM.vbs"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2260
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\SEWZOM.vbs"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    - Adds Run key to start application
    PID:4380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

JavaScript

1

T1059.007

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
238KB

MD5
210c243e3ae3e8cdcf28caad58547c96

SHA1
0a5811eb25bd8dbe548f7ff819e2e50e2f8c897a

SHA256
c80ad15e2f164e7eaeaacb50dbe50fd5176fa0068e669b225fdcdbcf35fc16ea

SHA512
ccdd3767e0f5ba936991a42706ccd7e5af808f4deebde75427634d2c847ce5f228da38bdc4a8b76ad1fc5498b5eedda393ce5fec92462ba74e62b6d30eaf1d99

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads