wshrat | a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c

General

Target

a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c_JC.js
Size

941KB
MD5

aefbde8b2feb2370f55b45f7c9fb33f8
SHA1

5bcee2dc04e6bef1c9753ef1b8d86e55a46a94de
SHA256

a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c
SHA512

8657a53c5efc479c26e29fab3c058784420224e5c511a1b70bb9ad187a5d3719a7abf265b6e1ad64ffd17cb295c29a674086276594534efeb69d8858fcc4733d
SSDEEP

6144:MQPp6tU2vR4K1zzGxx29tUHwYwdetKadJjXqs4TSBdWHYa7iiRhqb0YDFL0jEhHb:Xj9

Score

10^/10

wshrat trojan

Malware Config

Extracted

Family

wshrat

C2

http://harold.2waky.com:1604

Signatures

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

Blocklisted process makes network request 26 IoCs

flow	pid	Process
4	2728	wscript.exe
7	2728	wscript.exe
8	2728	wscript.exe
9	2728	wscript.exe
11	2728	wscript.exe
12	2728	wscript.exe
13	2728	wscript.exe
15	2728	wscript.exe
16	2728	wscript.exe
17	2728	wscript.exe
19	2728	wscript.exe
20	2728	wscript.exe
21	2728	wscript.exe
23	2728	wscript.exe
24	2728	wscript.exe
25	2728	wscript.exe
27	2728	wscript.exe
28	2728	wscript.exe
29	2728	wscript.exe
31	2728	wscript.exe
32	2728	wscript.exe
33	2728	wscript.exe
35	2728	wscript.exe
36	2728	wscript.exe
37	2728	wscript.exe
39	2728	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c_JC.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c_JC.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.

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

Script User-Agent 25 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	8	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	11	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	21	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	33	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	19	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	20	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	28	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	29	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	31	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	37	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	39	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	9	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	13	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	15	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	17	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	24	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	35	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	36	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	7	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	12	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	16	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	23	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	25	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	27	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands
HTTP User-Agent header	32	WSHRAT\|2C20920D\|KGPMNUDG\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 4/10/2023\|JavaScript-v3.4\|NL:Netherlands

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2728	2204	wscript.exe	29
PID 2204 wrote to memory of 2728	2204	wscript.exe	29
PID 2204 wrote to memory of 2728	2204	wscript.exe	29

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c_JC.js
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c_JC.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:2728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c_JC.js

Filesize
941KB

MD5
aefbde8b2feb2370f55b45f7c9fb33f8

SHA1
5bcee2dc04e6bef1c9753ef1b8d86e55a46a94de

SHA256
a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c

SHA512
8657a53c5efc479c26e29fab3c058784420224e5c511a1b70bb9ad187a5d3719a7abf265b6e1ad64ffd17cb295c29a674086276594534efeb69d8858fcc4733d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c_JC.js

Filesize
941KB

MD5
aefbde8b2feb2370f55b45f7c9fb33f8

SHA1
5bcee2dc04e6bef1c9753ef1b8d86e55a46a94de

SHA256
a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c

SHA512
8657a53c5efc479c26e29fab3c058784420224e5c511a1b70bb9ad187a5d3719a7abf265b6e1ad64ffd17cb295c29a674086276594534efeb69d8858fcc4733d

Download Submit
C:\Users\Admin\a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c_JC.js

Filesize
941KB

MD5
aefbde8b2feb2370f55b45f7c9fb33f8

SHA1
5bcee2dc04e6bef1c9753ef1b8d86e55a46a94de

SHA256
a4091f479b77f96865cd035492ce534e54dfaa59178cf74e2a045fa5d0916b8c

SHA512
8657a53c5efc479c26e29fab3c058784420224e5c511a1b70bb9ad187a5d3719a7abf265b6e1ad64ffd17cb295c29a674086276594534efeb69d8858fcc4733d

Download Submit

Analysis

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