strrat | 743569106872154115ba9aa6c4d354ebacb7cb9db052306416f4e3890b994239

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07-09-2024 01:24

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General

Target

743569106872154115ba9aa6c4d354ebacb7cb9db052306416f4e3890b994239.js
Size

7KB
MD5

4fcc56b7dbee1342e383030ab4be2e4a
SHA1

63f5f4aa8bc732b9e678e64003f3760ee04c803e
SHA256

743569106872154115ba9aa6c4d354ebacb7cb9db052306416f4e3890b994239
SHA512

07ae0d9c24c3857b058f52cc6719196133e50da699b065e96a27b7e7629a37fede86479884ffddce3b5ba4b38aca95ba4f419fe9eb48cc1effc0a33d5a7606ed
SSDEEP

192:PgDlcwvjBSx2FHIdPNLSxMISUEcwvjszhczS8McInkjHcZSfAIcLcRSTJcwvjG/i:PB47

Score

10^/10

strrat execution persistence stealer trojan

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat

Detect jar appended to MSI 1 IoCs

Processes:

resource	yara_rule
behavioral2/files/0x000400000001e6cf-7.dat	jar_in_msi

Blocklisted process makes network request 1 IoCs

Processes:

wscript.exe

flow	pid	Process
1	3720	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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 1 IoCs

Processes:

java.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VjX.jar	java.exe

Loads dropped DLL 1 IoCs

Processes:

java.exe

pid	Process
2408	java.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

java.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VjX = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\VjX.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VjX = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\VjX.jar\""	java.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 2 IoCs

Processes:

wscript.exeWScript.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\Local Settings	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\Local Settings	WScript.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
1044	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

wscript.exeWScript.exejavaw.exejava.execmd.exe

description	pid	Process	procid_target
PID 3720 wrote to memory of 3672	3720	wscript.exe	88
PID 3720 wrote to memory of 3672	3720	wscript.exe	88
PID 3672 wrote to memory of 2028	3672	WScript.exe	89
PID 3672 wrote to memory of 2028	3672	WScript.exe	89
PID 2028 wrote to memory of 1220	2028	javaw.exe	97
PID 2028 wrote to memory of 1220	2028	javaw.exe	97
PID 1220 wrote to memory of 3180	1220	java.exe	99
PID 1220 wrote to memory of 3180	1220	java.exe	99
PID 1220 wrote to memory of 2408	1220	java.exe	100
PID 1220 wrote to memory of 2408	1220	java.exe	100
PID 3180 wrote to memory of 1044	3180	cmd.exe	103
PID 3180 wrote to memory of 1044	3180	cmd.exe	103

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\743569106872154115ba9aa6c4d354ebacb7cb9db052306416f4e3890b994239.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3720
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\JLLUMC.js"
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3672
- - C:\Program Files\Java\jre-1.8\bin\javaw.exe
    "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Local\Temp\VjX.jar"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2028
  - - C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\VjX.jar"
      4⤵
      Drops startup file
      Adds Run key to start application
      Suspicious use of WriteProcessMemory
      PID:1220
    - - C:\Windows\SYSTEM32\cmd.exe
        
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\VjX.jar"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3180
      - C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\VjX.jar"
        6⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:1044
    - - C:\Program Files\Java\jre-1.8\bin\java.exe
        
        "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\VjX.jar"
        5⤵
        Loads dropped DLL
        
        PID:2408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

Filesize
46B

MD5
d95da7bc5dae63e983fd98b25d1893cb

SHA1
63e9a779fef8755c82397eccf38276cff346e881

SHA256
1a3cefa88097613df48cdd177dd0f77ec63b396f29ceefcf79b6397301098ceb

SHA512
c6a9c5d09a1ad3f151ffa8e426a0ce0fb1a685b161171274608f9f12b267d3e1382816d23dd46b8f872313da0a5b56933217d9dd6601c6286f8e2fa5d850c8b2

Download Submit
C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

Filesize
46B

MD5
a6ebff4ccc5c103af35d8bd58283fcc4

SHA1
940a81f95b0246b5941d690348accfcf7e799238

SHA256
42e283fe523693376515eb04a36c8439ced7537ffdcc86d3d105d2d0508d14c9

SHA512
aaf60b8bdf5c9bbc3ee3cb1c5ea92106cdcea957b7a4d05ad9776b08cec21ed88cf9f54dcf6f294eb0c099f9339c9abd1cb468bc3ce2ad372a0e7bf96b453334

Download Submit
C:\Users\Admin\AppData\Local\Temp\JLLUMC.js

Filesize
367KB

MD5
961caa8b91ecbca3ce8601dc4a515e51

SHA1
8480098196ccd298f122bbe9cc463954ddc0f241

SHA256
320ccbaab0c9d5cd7da65b3323b6e3d3cf36c5010d7f80598861150fa809eceb

SHA512
ce591541e0f3ff5d4781dd04c902336ff3b6b416934516c25d11886195d5829bbc13d20e5489811c8995c083b1842f090171e4f6cbf249a64cd1c78f580a72a7

Download Submit
C:\Users\Admin\AppData\Local\Temp\VjX.jar

Filesize
258KB

MD5
e47c15a77ec5efc447b41c23dd4760bc

SHA1
ebd7c32dd6ba13a999e2f05552e6e432d9d49035

SHA256
5f6f4c0f820e97ca6c40d16d25ca1e24010c4f4e3462f4f79c0de8e886528b2a

SHA512
c34daf6940637261e3e596187d9e82c0aecc9f5dc3099126fa8cdc4e8ac596128fc2ce16b829933b802aa0f83e3c916de427f59474636d56ce7bb22f73e0ea35

Download Submit
C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna8019549245475869261.dll

Filesize
241KB

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2718105630-359604950-2820636825-1000\83aa4cc77f591dfc2374580bbd95f6ba_32404286-a0b5-4a93-9620-6f13fd83251a

Filesize
45B

MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

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
memory/1220-131-0x000002048D220000-0x000002048D221000-memory.dmp

Filesize
4KB

Download
memory/2028-62-0x0000020D9DE50000-0x0000020D9DE51000-memory.dmp

Filesize
4KB

Download
memory/2028-84-0x0000020D9DE50000-0x0000020D9DE51000-memory.dmp

Filesize
4KB

Download
memory/2028-83-0x0000020D9DE50000-0x0000020D9DE51000-memory.dmp

Filesize
4KB

Download
memory/2028-78-0x0000020D9DE50000-0x0000020D9DE51000-memory.dmp

Filesize
4KB

Download
memory/2028-75-0x0000020D9DE50000-0x0000020D9DE51000-memory.dmp

Filesize
4KB

Download
memory/2028-69-0x0000020D9DE50000-0x0000020D9DE51000-memory.dmp

Filesize
4KB

Download
memory/2028-65-0x0000020D9DE50000-0x0000020D9DE51000-memory.dmp

Filesize
4KB

Download
memory/2028-58-0x0000020D9DE50000-0x0000020D9DE51000-memory.dmp

Filesize
4KB

Download
memory/2028-43-0x0000020D9DE50000-0x0000020D9DE51000-memory.dmp

Filesize
4KB

Download
memory/2028-24-0x0000020D9DE50000-0x0000020D9DE51000-memory.dmp

Filesize
4KB

Download
memory/2408-167-0x000001E0247C0000-0x000001E0247C1000-memory.dmp

Filesize
4KB

Download