strrat | 11a903ab8c985f88daf70ba21d9b40b5df8efc33ddd0aa8dfeb4b9cd82b898fd

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 03:31

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General

Target
f224a2adc08aef0c0fc1899d4ba8aa52e3c608ef2b294dec6d72590dfcb91614.js
Size 443KB
Sample240511-d3a9tsdf96
SHA256 f224a2adc08aef0c0fc1899d4ba8aa52e3c608ef2b294dec6d72590dfcb91614
MD5 cdc0ff3b2e6bd8e1a0d09ff010c2c899
SHA1 e15ab2d20673e273eb9698894c9f1ef07a893999
SHA512 787ea82b4404ff50f77f18b36f60071551e8a80810e52d92fac6c89e06baa66bb3d0f09970c5a043273416a3aa92b99b74ae8e2a1f6d66f30c1bd92a282deea9
SSDEEP 6144:ZQOOkQsu5kVH5fRAZmyUzxDRqns5D9rmqJ1UnYUB48xM91Y1WziypzkAkaM1kxKm:HVuGZq6xDk8H1cYm48xMYCkbprC
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

strrat discovery execution persistence stealer trojan

Malware Config

Signatures

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

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 1 IoCs

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

Loads dropped DLL 1 IoCs

pid	Process
3172	java.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
640	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nihbvzkuf = "\"C:\\Users\\Admin\\AppData\\Roaming\\nihbvzkuf.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nihbvzkuf = "\"C:\\Users\\Admin\\AppData\\Roaming\\nihbvzkuf.txt\""	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

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/Job

T1053

pid	Process
4740	schtasks.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4452 wrote to memory of 2120	4452	wscript.exe	83
PID 4452 wrote to memory of 2120	4452	wscript.exe	83
PID 2120 wrote to memory of 640	2120	javaw.exe	84
PID 2120 wrote to memory of 640	2120	javaw.exe	84
PID 2120 wrote to memory of 4884	2120	javaw.exe	86
PID 2120 wrote to memory of 4884	2120	javaw.exe	86
PID 4884 wrote to memory of 4736	4884	wscript.exe	87
PID 4884 wrote to memory of 4736	4884	wscript.exe	87
PID 4736 wrote to memory of 400	4736	javaw.exe	97
PID 4736 wrote to memory of 400	4736	javaw.exe	97
PID 400 wrote to memory of 860	400	java.exe	99
PID 400 wrote to memory of 860	400	java.exe	99
PID 400 wrote to memory of 3172	400	java.exe	100
PID 400 wrote to memory of 3172	400	java.exe	100
PID 860 wrote to memory of 4740	860	cmd.exe	103
PID 860 wrote to memory of 4740	860	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\f224a2adc08aef0c0fc1899d4ba8aa52e3c608ef2b294dec6d72590dfcb91614.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4452
- 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\Roaming\aujamviur.txt"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2120
- - C:\Windows\system32\icacls.exe
    C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
    3⤵
    - Modifies file permissions
    PID:640
- - C:\Windows\SYSTEM32\wscript.exe
    wscript C:\Users\Admin\pnjtiaccyf.js
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:4884
  - - 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\Roaming\nihbvzkuf.txt"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4736
    - - C:\Program Files\Java\jre-1.8\bin\java.exe
        
        "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\nihbvzkuf.txt"
        5⤵
        Drops startup file
        Adds Run key to start application
        Suspicious use of WriteProcessMemory
        
        PID:400
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\nihbvzkuf.txt"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:860
        
        C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\nihbvzkuf.txt"
        7⤵
        Creates scheduled task(s)
        
        PID:4740
      - 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\nihbvzkuf.txt"
        6⤵
        Loads dropped DLL
        
        PID:3172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

File and Directory Permissions Modification

T1222

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

3903daac9bc4a3b7.timestamp

Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
Size 46B
SHA256 a73409092d7e737c2eec41906c8ba69e5472b87452d9dae350bed8a19972c584
MD5 0e3795d11c35572b120223ecd743718b
SHA1 8f613171c3d67870adb417eccbaeedd9a75e5367
SHA512 34ef29209c4abb56772392cab70749bd28ae3ecdd67164004b72fc015d72f0abb1a0d720d0d43666c1b230f2a759f0e70522a1d106ade8d0cdcacddac80ba348
MD5 SHA1 SHA512

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jna7786424424501267645.dll

Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna7786424424501267645.dll
Size 241KB
SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
MD5 e02979ecd43bcc9061eb2b494ab5af50
SHA1 3122ac0e751660f646c73b10c4f79685aa65c545
SHA512 1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
SSDEEP 6144:YW2uuBVCg2ZF0xk5udHB7EkAgEEz2Lh2LDh+MDWHNaL7yyubjmiy9NBW:YW2uAC9sVEZL0vdnz
MD5 SHA1 SHA512 SSDEEP

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83aa4cc77f591dfc2374580bbd95f6ba_215f2dba-ef84-4dd1-b127-5f514a0c233b

Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3906287020-2915474608-1755617787-1000\83aa4cc77f591dfc2374580bbd95f6ba_215f2dba-ef84-4dd1-b127-5f514a0c233b
Size 45B
SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
MD5 c8366ae350e7019aefc9d1e6e6a498c6
SHA1 5731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA512 33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
MD5 SHA1 SHA512

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aujamviur.txt

Path C:\Users\Admin\AppData\Roaming\aujamviur.txt
Size 219KB
SHA256 8d1f7af142e64bcc42117302ce5c20a1e8cce37485f5f8948f006924498cd997
MD5 dc460eff6b011dad319db62115365f3a
SHA1 112909f254ae16361a6f3dfe757f45896fa8f522
SHA512 d8ed4c60a35a8be32cd391c4c356f53bedbb2f59b20061f01a0aa751091fcb367799ffab266ad9ca33ef677fe12d30811991b4641c4519aeea073a095cc74d18
SSDEEP 6144:n/tlwJJweuZJHj0gHSTAOJCiJcWFv/o4nG8:1WCZJHggHSMOJCiJV+4d
MD5 SHA1 SHA512 SSDEEP

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nihbvzkuf.txt

Path C:\Users\Admin\AppData\Roaming\nihbvzkuf.txt
Size 164KB
SHA256 4a464631cf3f7f3261f79fc443dd63d0d205806077e33e9ea1477134d2f7c723
MD5 263238ba3312613146a92ecfad5f5abb
SHA1 57d076f1deb30314bdef4d7e4795068957c8c0d0
SHA512 baaa069e01cf004eec72569fb49312dcf2b1bdac304b6c2e003a926f052c71708e2e704a14e81fbdaabbb01067c61f295bca1c97dfd2fef8ebc2b055eb12f9c4
SSDEEP 3072:kwxNMv7YAmfZEm9b6w1u9TOrkRiOpus0mOM4rkxxFzL0xh8xm5hJS:kx4f64u9TrRiOpP0eTFsxhQEhk
MD5 SHA1 SHA512 SSDEEP

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jna-5.5.0.jar

Path C:\Users\Admin\lib\jna-5.5.0.jar
Size 1.4MB
SHA256 b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
MD5 acfb5b5fd9ee10bf69497792fd469f85
SHA1 0e0845217c4907822403912ad6828d8e0b256208
SHA512 e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa
SSDEEP 24576:BggLnybolJdaW+864NkqCUer8N7sSFOaj5lWOEMIKk6idJRWPTgzq3bICEz2lFO:BTnybo9aW+L5qCUO0xsiMPZrJgPLLIO6
MD5 SHA1 SHA512 SSDEEP

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jna-platform-5.5.0.jar

Path C:\Users\Admin\lib\jna-platform-5.5.0.jar
Size 2.6MB
SHA256 24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
MD5 2f4a99c2758e72ee2b59a73586a2322f
SHA1 af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA512 b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494
SSDEEP 24576:DyciOooDbK7Yw1J75n4BP/NtK2ov3mhDR6:3iOLDOZJ75nwtK2ovWh8
MD5 SHA1 SHA512 SSDEEP

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sqlite-jdbc-3.14.2.1.jar

Path C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
Size 4.1MB
SHA256 2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
MD5 b33387e15ab150a7bf560abdc73c3bec
SHA1 66b8075784131f578ef893fd7674273f709b9a4c
SHA512 25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279
SSDEEP 98304:czJoX0izQbrabWo2MxgErRYxFOY8IsFWyTIiTIzMpca:cJoXHQKW9MxRr8wZZsikzMaa
MD5 SHA1 SHA512 SSDEEP

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system-hook-3.5.jar

Path C:\Users\Admin\lib\system-hook-3.5.jar
Size 772KB
SHA256 2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
MD5 e1aa38a1e78a76a6de73efae136cdb3a
SHA1 c463da71871f780b2e2e5dba115d43953b537daf
SHA512 fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d
SSDEEP 24576:IhCFW8WXvOsWW9XGmvcVfkfTnzrLvadKPpv:IhCYWstW202t
MD5 SHA1 SHA512 SSDEEP

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pnjtiaccyf.js

Path C:\Users\Admin\pnjtiaccyf.js
Size 347KB
SHA256 5eb64fbe30ab5c8d68fd358f31f9f3cf9c2cb52032a1736a4b327a3d02d8bd0a
MD5 4ab0c7385d9202a8aed07e0086d83711
SHA1 987d7102a8585fde7412554732d7974159e007fa
SHA512 c53ffb22e9dba04607c6648c4b6dd3195eaedbf73ce6b0f065aa116db1e6188b5096b53f281e02486e0b0f8f7e407870c050465902566f4701ce511ed4631682
SSDEEP 6144:QuqYsTUku56k9ut0QaJ5iGlTxys+OlWLYE5q3FwcG+DshImp5r3jS3PsGdRoAPE/:zq7Te6x1oOGsJrrTGd5PLw/
MD5 SHA1 SHA512 SSDEEP

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memory/400-135-0x00000225E0360000-0x00000225E0361000-memory.dmp

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memory/2120-17-0x0000028F92180000-0x0000028F923F0000-memory.dmp

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memory/2120-16-0x0000028F92160000-0x0000028F92161000-memory.dmp

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memory/2120-4-0x0000028F92180000-0x0000028F923F0000-memory.dmp

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memory/3172-163-0x000001EBFF340000-0x000001EBFF341000-memory.dmp

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memory/4736-85-0x0000023C69AB0000-0x0000023C69AB1000-memory.dmp

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memory/4736-98-0x0000023C69AB0000-0x0000023C69AB1000-memory.dmp

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memory/4736-80-0x0000023C69AB0000-0x0000023C69AB1000-memory.dmp

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memory/4736-77-0x0000023C69AB0000-0x0000023C69AB1000-memory.dmp

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memory/4736-75-0x0000023C69AB0000-0x0000023C69AB1000-memory.dmp

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memory/4736-46-0x0000023C69AB0000-0x0000023C69AB1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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