wshrat | ba25eeb1352d5aab2e09eaa942324510ecd964671e7def1e158c3a543534ca1b

General

Target

f94bfce5384f10201df977d67ea6c5d1.js
Size

179KB
MD5

f94bfce5384f10201df977d67ea6c5d1
SHA1

fb5f56e7e554d466b6ca7264c2748826daac8cc7
SHA256

ba25eeb1352d5aab2e09eaa942324510ecd964671e7def1e158c3a543534ca1b
SHA512

492e18b7a219734a9564bd330f5350582bd3c01d72ce0eb491343777d32dec5162c6deaf2c97ee6d6f68e1e2a025182dc20312fc4fe7c1024e0970ab1056ef65

Score

10^/10

wshrat persistence trojan

Malware Config

Signatures

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

WSHRAT Payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\f94bfce5384f10201df977d67ea6c5d1.js	family_wshrat
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f94bfce5384f10201df977d67ea6c5d1.js	family_wshrat

Blocklisted process makes network request 37 IoCs

Processes:

wscript.exe

flow	pid	process
5	1264	wscript.exe
6	1264	wscript.exe
7	1264	wscript.exe
8	1264	wscript.exe
9	1264	wscript.exe
10	1264	wscript.exe
11	1264	wscript.exe
13	1264	wscript.exe
14	1264	wscript.exe
15	1264	wscript.exe
16	1264	wscript.exe
17	1264	wscript.exe
18	1264	wscript.exe
20	1264	wscript.exe
21	1264	wscript.exe
22	1264	wscript.exe
23	1264	wscript.exe
24	1264	wscript.exe
25	1264	wscript.exe
27	1264	wscript.exe
28	1264	wscript.exe
29	1264	wscript.exe
30	1264	wscript.exe
31	1264	wscript.exe
32	1264	wscript.exe
34	1264	wscript.exe
35	1264	wscript.exe
36	1264	wscript.exe
37	1264	wscript.exe
38	1264	wscript.exe
39	1264	wscript.exe
41	1264	wscript.exe
42	1264	wscript.exe
43	1264	wscript.exe
44	1264	wscript.exe
45	1264	wscript.exe
46	1264	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exewscript.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f94bfce5384f10201df977d67ea6c5d1.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f94bfce5384f10201df977d67ea6c5d1.js	wscript.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exewscript.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\f94bfce5384f10201df977d67ea6c5d1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\f94bfce5384f10201df977d67ea6c5d1.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\f94bfce5384f10201df977d67ea6c5d1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\f94bfce5384f10201df977d67ea6c5d1.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\f94bfce5384f10201df977d67ea6c5d1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\f94bfce5384f10201df977d67ea6c5d1.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\f94bfce5384f10201df977d67ea6c5d1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\f94bfce5384f10201df977d67ea6c5d1.js\""	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.

Processes:

flow ioc

4 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	ioc
4	ip-api.com

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1880 wrote to memory of 1264	1880	wscript.exe	wscript.exe
PID 1880 wrote to memory of 1264	1880	wscript.exe	wscript.exe
PID 1880 wrote to memory of 1264	1880	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\f94bfce5384f10201df977d67ea6c5d1.js
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\f94bfce5384f10201df977d67ea6c5d1.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:1264

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f94bfce5384f10201df977d67ea6c5d1.js

MD5
361ef4bdd692cd343c1b7d55cfdb47da

SHA1
cec2a80071939ff12f5b7b72fe29b19e10d83b6a

SHA256
e136a9569671f20b1b02cc1ac69dc178e49e04cdead0c7cff3351ca1251ea752

SHA512
d7470011929b6548de6f2574383c0c0f952926c5a2c9486ef34fcd73a4a960db59119568e9fbe5419cd24a42e91f4c5849e47b3a8baf7af3575921bf23580869

Download Submit
C:\Users\Admin\AppData\Roaming\f94bfce5384f10201df977d67ea6c5d1.js

MD5
f94bfce5384f10201df977d67ea6c5d1

SHA1
fb5f56e7e554d466b6ca7264c2748826daac8cc7

SHA256
ba25eeb1352d5aab2e09eaa942324510ecd964671e7def1e158c3a543534ca1b

SHA512
492e18b7a219734a9564bd330f5350582bd3c01d72ce0eb491343777d32dec5162c6deaf2c97ee6d6f68e1e2a025182dc20312fc4fe7c1024e0970ab1056ef65

Download Submit
memory/1264-2-0x0000000000000000-mapping.dmp

Download
memory/1708-6-0x000007FEF7F70000-0x000007FEF81EA000-memory.dmp

Filesize
2.5MB

Download
memory/1880-5-0x00000000025E0000-0x00000000025E4000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads