strrat | 1e24a6a3246bd6d1af9c3a90880b4518afe0bbaa40f8f922138e1d3f8a4f02de

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20220414-en
submitted
23-06-2022 05:56

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General

Target

Custom Clearance Doc. AWB#5305323204643.js
Size

616KB
MD5

33d87ba5f5667d83a06e8794e464e6e8
SHA1

b0b8207b5804987067391f6192b8c233dfccbae7
SHA256

1e24a6a3246bd6d1af9c3a90880b4518afe0bbaa40f8f922138e1d3f8a4f02de
SHA512

1ba63984598b1b6400e915dd026bd45e3d12553e7202c6577ca8f0d7f0e6215127ca3a4063a6256f18f956a5ee0f7580d9908084f191f6c8a94cf328fde07e88

Score

10^/10

strrat vjw0rm persistence stealer trojan worm

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 13 IoCs

Processes:

wscript.exe

flow	pid	process
4	1460	wscript.exe
14	1460	wscript.exe
15	1460	wscript.exe
18	1460	wscript.exe
19	1460	wscript.exe
21	1460	wscript.exe
24	1460	wscript.exe
25	1460	wscript.exe
26	1460	wscript.exe
30	1460	wscript.exe
31	1460	wscript.exe
32	1460	wscript.exe
35	1460	wscript.exe

Drops startup file 3 IoCs

Processes:

wscript.exejava.exe

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

Loads dropped DLL 1 IoCs

Processes:

java.exe

pid process

944 java.exe

pid	process
944	java.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exejava.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\LfLwlUUXXC.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\SM = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\SM.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SM = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\SM.jar\""	java.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

896 schtasks.exe

pid	process
896	schtasks.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

wscript.exejava.exejava.exe

description	pid	process	target process
PID 2000 wrote to memory of 1460	2000	wscript.exe	wscript.exe
PID 2000 wrote to memory of 1460	2000	wscript.exe	wscript.exe
PID 2000 wrote to memory of 1460	2000	wscript.exe	wscript.exe
PID 2000 wrote to memory of 1512	2000	wscript.exe	java.exe
PID 2000 wrote to memory of 1512	2000	wscript.exe	java.exe
PID 2000 wrote to memory of 1512	2000	wscript.exe	java.exe
PID 1512 wrote to memory of 952	1512	java.exe	java.exe
PID 1512 wrote to memory of 952	1512	java.exe	java.exe
PID 1512 wrote to memory of 952	1512	java.exe	java.exe
PID 952 wrote to memory of 1864	952	java.exe	cmd.exe
PID 952 wrote to memory of 1864	952	java.exe	cmd.exe
PID 952 wrote to memory of 1864	952	java.exe	cmd.exe
PID 952 wrote to memory of 944	952	java.exe	java.exe
PID 952 wrote to memory of 944	952	java.exe	java.exe
PID 952 wrote to memory of 944	952	java.exe	java.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Custom Clearance Doc. AWB#5305323204643.js"
1⤵
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\LfLwlUUXXC.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:1460
- C:\Windows\System32\java.exe
  "C:\Windows\System32\java.exe" -jar "C:\Users\Admin\AppData\Local\Temp\SM.jar"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1512
- - C:\Program Files\Java\jre7\bin\java.exe
    "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\SM.jar"
    3⤵
    - Drops startup file
    - Adds Run key to start application
    - Suspicious use of WriteProcessMemory
    PID:952
  - - C:\Program Files\Java\jre7\bin\java.exe
      "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\SM.jar"
      4⤵
      Loads dropped DLL
      PID:944
  - - C:\Windows\system32\cmd.exe
      cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\SM.jar"
      4⤵
      PID:1864
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\SM.jar"
        5⤵
        Creates scheduled task(s)
        
        PID:896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\SM.jar

Filesize
164KB

MD5
edf0e95033cb0df96be06c5088142288

SHA1
3972af92633203e7857ec0e4ae65246b32c83539

SHA256
9712cb8921bc1aaf24f86d6a82ce59a332f6ad04eb1af0414f9bd51e0f35e049

SHA512
b7086f0880328bfbb11f6a48a95bde9718318bec9a66c4d00dc16384a1c7ccae97685c7e50d8278c3a267431032d418c61acc9a9ca926d0bd948b79c722a562a

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

Filesize
117KB

MD5
5ec7e975e42079dacb58ad5e712df35f

SHA1
6c963b465c7ddc9081add19f0c99eac3e969f819

SHA256
4be6ef286e027bd596340d08cc8640d213cff7fbf93638a2ccee267fa42512b8

SHA512
ca38464e394d43a8320baa24163cf3921a66ce3a87a8f4da7d20718ab6248319cb6d08de61509b81061d353da23033412fa9b121c14c2c32df5aa2859a7e13a8

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-790309383-526510583-3802439154-1000\83aa4cc77f591dfc2374580bbd95f6ba_5a8ed3ac-cae1-4e8b-9fd6-2d374700adef

Filesize
45B

MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

Download Submit
C:\Users\Admin\AppData\Roaming\SM.jar

Filesize
164KB

MD5
edf0e95033cb0df96be06c5088142288

SHA1
3972af92633203e7857ec0e4ae65246b32c83539

SHA256
9712cb8921bc1aaf24f86d6a82ce59a332f6ad04eb1af0414f9bd51e0f35e049

SHA512
b7086f0880328bfbb11f6a48a95bde9718318bec9a66c4d00dc16384a1c7ccae97685c7e50d8278c3a267431032d418c61acc9a9ca926d0bd948b79c722a562a

Download Submit
C:\Users\Admin\AppData\Roaming\lib\jna-5.5.0.jar

Filesize
1.4MB

MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

Download Submit
C:\Users\Admin\AppData\Roaming\lib\jna-platform-5.5.0.jar

Filesize
2.6MB

MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

Download Submit
C:\Users\Admin\AppData\Roaming\lib\system-hook-3.5.jar

Filesize
772KB

MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
C:\Users\Admin\SM.jar

Filesize
164KB

MD5
edf0e95033cb0df96be06c5088142288

SHA1
3972af92633203e7857ec0e4ae65246b32c83539

SHA256
9712cb8921bc1aaf24f86d6a82ce59a332f6ad04eb1af0414f9bd51e0f35e049

SHA512
b7086f0880328bfbb11f6a48a95bde9718318bec9a66c4d00dc16384a1c7ccae97685c7e50d8278c3a267431032d418c61acc9a9ca926d0bd948b79c722a562a

Download Submit
C:\Users\Admin\lib\jna-5.5.0.jar

Filesize
1.4MB

MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

Download Submit
C:\Users\Admin\lib\jna-platform-5.5.0.jar

Filesize
2.6MB

MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

Download Submit
C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar

Filesize
4.1MB

MD5
b33387e15ab150a7bf560abdc73c3bec

SHA1
66b8075784131f578ef893fd7674273f709b9a4c

SHA256
2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

SHA512
25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

Download Submit
C:\Users\Admin\lib\system-hook-3.5.jar

Filesize
772KB

MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
\Users\Admin\AppData\Local\Temp\jna-63116079\jna1595996311763910900.dll

Filesize
241KB

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
memory/944-106-0x0000000002160000-0x0000000005160000-memory.dmp

Filesize
48.0MB

Download
memory/944-89-0x0000000000000000-mapping.dmp

Download
memory/944-100-0x0000000002160000-0x0000000005160000-memory.dmp

Filesize
48.0MB

Download
memory/952-83-0x00000000020E0000-0x00000000050E0000-memory.dmp

Filesize
48.0MB

Download
memory/952-71-0x0000000000000000-mapping.dmp

Download
memory/1460-55-0x0000000000000000-mapping.dmp

Download
memory/1512-57-0x0000000000000000-mapping.dmp

Download
memory/1512-63-0x00000000020B0000-0x00000000050B0000-memory.dmp

Filesize
48.0MB

Download
memory/1864-88-0x0000000000000000-mapping.dmp

Download
memory/2000-54-0x000007FEFBB31000-0x000007FEFBB33000-memory.dmp

Filesize
8KB

Download