strrat | 7a85be46c2ea87761f8453850accabed698b20ae24994e3f36a9d4fa4b34e1ad

Analysis

max time kernel
135s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22-08-2024 01:48

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General

Target

7a85be46c2ea87761f8453850accabed698b20ae24994e3f36a9d4fa4b34e1ad.jar
Size

124KB
MD5

9b6b8d9e9c4a78a56dd7f3ff3910d123
SHA1

063bc159f1a611329e1713b4dd464589311f4ac4
SHA256

7a85be46c2ea87761f8453850accabed698b20ae24994e3f36a9d4fa4b34e1ad
SHA512

4a0980b766efb187a4869685bb986f20111268282f80da1c287cbbadb50e6eaba8d2ce46733e627530826d367a13d5351f08eabe48830445925ddbd3be189026
SSDEEP

3072:DqZlIC+q92TZzGmr3EyyF5cRAzDLmiLqnp8559FX:exT2ZDDExDLFenG3FX

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

wscript.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\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\wucoeukv.txt	java.exe

Loads dropped DLL 2 IoCs

Processes:

java.exejava.exe

pid	Process
3560	java.exe
1872	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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wucoeukv = "\"C:\\Users\\Admin\\AppData\\Roaming\\wucoeukv.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wucoeukv = "\"C:\\Users\\Admin\\AppData\\Roaming\\wucoeukv.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

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
4424	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

java.exewscript.exejavaw.exejava.execmd.exe

description	pid	Process	procid_target
PID 1132 wrote to memory of 2624	1132	java.exe	84
PID 1132 wrote to memory of 2624	1132	java.exe	84
PID 2624 wrote to memory of 2752	2624	wscript.exe	86
PID 2624 wrote to memory of 2752	2624	wscript.exe	86
PID 2752 wrote to memory of 3560	2752	javaw.exe	93
PID 2752 wrote to memory of 3560	2752	javaw.exe	93
PID 3560 wrote to memory of 2364	3560	java.exe	96
PID 3560 wrote to memory of 2364	3560	java.exe	96
PID 3560 wrote to memory of 1872	3560	java.exe	98
PID 3560 wrote to memory of 1872	3560	java.exe	98
PID 2364 wrote to memory of 4424	2364	cmd.exe	100
PID 2364 wrote to memory of 4424	2364	cmd.exe	100

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:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\7a85be46c2ea87761f8453850accabed698b20ae24994e3f36a9d4fa4b34e1ad.jar
1⤵
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Windows\SYSTEM32\wscript.exe
  wscript C:\Users\Admin\kwtjfxitjs.js
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:2624
- - 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\wucoeukv.txt"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2752
  - - C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\wucoeukv.txt"
      4⤵
      Drops startup file
      Loads dropped DLL
      Adds Run key to start application
      Suspicious use of WriteProcessMemory
      PID:3560
    - - C:\Windows\SYSTEM32\cmd.exe
        
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\wucoeukv.txt"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2364
      - C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\wucoeukv.txt"
        6⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:4424
    - - 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\wucoeukv.txt"
        5⤵
        Loads dropped DLL
        
        PID:1872

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

Replay Monitor

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Downloads

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

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

Filesize
46B

MD5
e21d686efda46434c3a8d1c47b5c3105

SHA1
6de2f78c9bee986434517707fa580d01fc357ac3

SHA256
681824a19c3cf5588c2b41b030a12388d5142ceb7a715e032ef677a3ed4662d7

SHA512
aafd9fd63a4d565a6644ee11aa9ec896cd8711e1ff7919a8b74932c2d64a2bdbe838c95b78ef571f007f7b47f7ccdf664be872975c7ad93c6bf47a1f316c3347

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

Filesize
46B

MD5
9757cd29aa4b505c7ddc728d64a6c9b0

SHA1
8ccb2f9ac20342d8de6eb504bcc0bdfb23215b28

SHA256
905a6481fdd865300e6ea76db6058834dbafbd3f01de96d3158916a8a0b0249d

SHA512
f4ffd8c41b65892f95e625370145bd71da2f5ee1047e00af555878d3c0f729517c3d0d30e424e50a3729e2dc8f1da30690ebeb780fd9c3577350b105d84a5b54

Download Submit
C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna2325744101908128017.dll

Filesize
241KB

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-945322488-2060912225-3527527000-1000\83aa4cc77f591dfc2374580bbd95f6ba_03d68389-5a68-4d9e-92ac-47b927e624dd

Filesize
45B

MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

Download Submit
C:\Users\Admin\AppData\Roaming\wucoeukv.txt

Filesize
92KB

MD5
40324e4190ca694d65c17b8142490c1e

SHA1
14f8a7fbd6580cc1146a04af95c37b6772bb5215

SHA256
943a982c65ebf476f6f454a95e4f8105f6c89d3e90d638113f718a208aa51db0

SHA512
885107f66e0441f1d14ae4f193bcacea831f46872ec74501d82f29af7e51731714acf8a63fce72dac557c20c6cd15d1e77734e3fa443bc28dd3cda5aca22f5b7

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

Filesize
211KB

MD5
02f54cae55ac59791732da5e9dc0bc02

SHA1
3471c8048595da2b21de90a073254604baa71f3a

SHA256
84d3131757d898906d44ed9e775526caeae6b0ffc53817101afbcec81119ecb6

SHA512
f16c90ef8952daee6050df14ae372a3021e85045cd8e9fddcabd5699031d1b478577532ba20172c8f8c9d80287c69d056af93a442e20a8f842ec5b3a630bdc67

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/1132-13-0x00000296B2A10000-0x00000296B2A11000-memory.dmp

Filesize
4KB

Download
memory/1132-14-0x00007FF9E8E90000-0x00007FF9E9085000-memory.dmp

Filesize
2.0MB

Download
memory/1132-2-0x00007FF9E8E90000-0x00007FF9E9085000-memory.dmp

Filesize
2.0MB

Download
memory/1872-176-0x000002C7AE440000-0x000002C7AE441000-memory.dmp

Filesize
4KB

Download
memory/2752-92-0x0000027C20820000-0x0000027C20821000-memory.dmp

Filesize
4KB

Download
memory/2752-45-0x0000027C20820000-0x0000027C20821000-memory.dmp

Filesize
4KB

Download
memory/2752-100-0x00007FF9E8E90000-0x00007FF9E9085000-memory.dmp

Filesize
2.0MB

Download
memory/2752-98-0x0000027C20820000-0x0000027C20821000-memory.dmp

Filesize
4KB

Download
memory/2752-97-0x0000027C20820000-0x0000027C20821000-memory.dmp

Filesize
4KB

Download
memory/2752-56-0x0000027C20820000-0x0000027C20821000-memory.dmp

Filesize
4KB

Download
memory/2752-20-0x00007FF9E8E90000-0x00007FF9E9085000-memory.dmp

Filesize
2.0MB

Download
memory/2752-85-0x0000027C20820000-0x0000027C20821000-memory.dmp

Filesize
4KB

Download
memory/2752-75-0x0000027C20820000-0x0000027C20821000-memory.dmp

Filesize
4KB

Download
memory/2752-71-0x0000027C20820000-0x0000027C20821000-memory.dmp

Filesize
4KB

Download
memory/3560-128-0x00000222D0320000-0x00000222D0321000-memory.dmp

Filesize
4KB

Download
memory/3560-148-0x00000222D0320000-0x00000222D0321000-memory.dmp

Filesize
4KB

Download