strrat | 11a903ab8c985f88daf70ba21d9b40b5df8efc33ddd0aa8dfeb4b9cd82b898fd

Analysis

max time kernel
145s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11-05-2024 07:53

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General

Target

f224a2adc08aef0c0fc1899d4ba8aa52e3c608ef2b294dec6d72590dfcb91614.js
Size

443KB
MD5

cdc0ff3b2e6bd8e1a0d09ff010c2c899
SHA1

e15ab2d20673e273eb9698894c9f1ef07a893999
SHA256

f224a2adc08aef0c0fc1899d4ba8aa52e3c608ef2b294dec6d72590dfcb91614
SHA512

787ea82b4404ff50f77f18b36f60071551e8a80810e52d92fac6c89e06baa66bb3d0f09970c5a043273416a3aa92b99b74ae8e2a1f6d66f30c1bd92a282deea9
SSDEEP

6144:ZQOOkQsu5kVH5fRAZmyUzxDRqns5D9rmqJ1UnYUB48xM91Y1WziypzkAkaM1kxKm:HVuGZq6xDk8H1cYm48xMYCkbprC

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

Processes:

wscript.exewscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\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\pchimujtoa.txt java.exe
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4008 icacls.exe

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

pid	process
4008	icacls.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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pchimujtoa = "\"C:\\Users\\Admin\\AppData\\Roaming\\pchimujtoa.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pchimujtoa = "\"C:\\Users\\Admin\\AppData\\Roaming\\pchimujtoa.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

Processes:

schtasks.exe

pid process

3460 schtasks.exe

pid	process
3460	schtasks.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

wscript.exejavaw.exewscript.exejavaw.exejava.execmd.exe

description	pid	process	target process
PID 4728 wrote to memory of 4732	4728	wscript.exe	javaw.exe
PID 4728 wrote to memory of 4732	4728	wscript.exe	javaw.exe
PID 4732 wrote to memory of 4008	4732	javaw.exe	icacls.exe
PID 4732 wrote to memory of 4008	4732	javaw.exe	icacls.exe
PID 4732 wrote to memory of 1124	4732	javaw.exe	wscript.exe
PID 4732 wrote to memory of 1124	4732	javaw.exe	wscript.exe
PID 1124 wrote to memory of 4184	1124	wscript.exe	javaw.exe
PID 1124 wrote to memory of 4184	1124	wscript.exe	javaw.exe
PID 4184 wrote to memory of 2416	4184	javaw.exe	java.exe
PID 4184 wrote to memory of 2416	4184	javaw.exe	java.exe
PID 2416 wrote to memory of 4676	2416	java.exe	cmd.exe
PID 2416 wrote to memory of 4676	2416	java.exe	cmd.exe
PID 2416 wrote to memory of 3084	2416	java.exe	java.exe
PID 2416 wrote to memory of 3084	2416	java.exe	java.exe
PID 4676 wrote to memory of 3460	4676	cmd.exe	schtasks.exe
PID 4676 wrote to memory of 3460	4676	cmd.exe	schtasks.exe

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:4728

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\cbrzqod.txt"
2⤵
- Suspicious use of WriteProcessMemory
PID:4732

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:4008

C:\Windows\SYSTEM32\wscript.exe
wscript C:\Users\Admin\pnjtiaccyf.js
3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1124

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\pchimujtoa.txt"
4⤵
- Suspicious use of WriteProcessMemory
PID:4184

C:\Program Files\Java\jre-1.8\bin\java.exe
"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\pchimujtoa.txt"
5⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2416

C:\Windows\SYSTEM32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\pchimujtoa.txt"
6⤵
- Suspicious use of WriteProcessMemory
PID:4676

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\pchimujtoa.txt"
7⤵
- Creates scheduled task(s)
PID:3460

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\pchimujtoa.txt"
6⤵
PID:3084

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4120 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:4944

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

Replay Monitor

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Downloads

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

Filesize
46B

MD5
8c503c29b41f77e781aa0c425b44da06

SHA1
0b9ce2af2e150d476bdd18095c08d393ff5dac1e

SHA256
93a3c95ec7f77b73a913c85ea673acb1c9d40fa22dd1c69dbcbb9a3d52e50898

SHA512
d951a41772e450f37a23e2d3aeb56c3b59c2b0f2bc6dbb572927af18a531bf828dfe2bc77860a8baaff1742fa1e181c3b48d2b92412eea8276e0eae313ac258b

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

Filesize
46B

MD5
0ccad86b1687ffa854f6af1121ff05c6

SHA1
42adee7fe8cdf67d7dd068974e36ffb02e185387

SHA256
417339d3405dba0ba848ff8b90d90e10fcd82424a44ff0ad2ec7bc638fc2ce89

SHA512
cab7f33bc03a15771dc7c03f95e2f21143059d482e3b455f3e9b78d3d11a635cb9caefb7abec6d2273445a99ce8e87eb525df2e439d4c67b56a77b36bd78c263

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

Filesize
219KB

MD5
dc460eff6b011dad319db62115365f3a

SHA1
112909f254ae16361a6f3dfe757f45896fa8f522

SHA256
8d1f7af142e64bcc42117302ce5c20a1e8cce37485f5f8948f006924498cd997

SHA512
d8ed4c60a35a8be32cd391c4c356f53bedbb2f59b20061f01a0aa751091fcb367799ffab266ad9ca33ef677fe12d30811991b4641c4519aeea073a095cc74d18

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

Filesize
164KB

MD5
263238ba3312613146a92ecfad5f5abb

SHA1
57d076f1deb30314bdef4d7e4795068957c8c0d0

SHA256
4a464631cf3f7f3261f79fc443dd63d0d205806077e33e9ea1477134d2f7c723

SHA512
baaa069e01cf004eec72569fb49312dcf2b1bdac304b6c2e003a926f052c71708e2e704a14e81fbdaabbb01067c61f295bca1c97dfd2fef8ebc2b055eb12f9c4

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
C:\Users\Admin\pnjtiaccyf.js

Filesize
347KB

MD5
4ab0c7385d9202a8aed07e0086d83711

SHA1
987d7102a8585fde7412554732d7974159e007fa

SHA256
5eb64fbe30ab5c8d68fd358f31f9f3cf9c2cb52032a1736a4b327a3d02d8bd0a

SHA512
c53ffb22e9dba04607c6648c4b6dd3195eaedbf73ce6b0f065aa116db1e6188b5096b53f281e02486e0b0f8f7e407870c050465902566f4701ce511ed4631682

Download Submit
memory/2416-123-0x000001DFB9960000-0x000001DFB9961000-memory.dmp

Filesize
4KB

Download
memory/4184-76-0x00000233A4810000-0x00000233A4811000-memory.dmp

Filesize
4KB

Download
memory/4184-80-0x00000233A4810000-0x00000233A4811000-memory.dmp

Filesize
4KB

Download
memory/4184-85-0x00000233A4810000-0x00000233A4811000-memory.dmp

Filesize
4KB

Download
memory/4184-89-0x00000233A4810000-0x00000233A4811000-memory.dmp

Filesize
4KB

Download
memory/4184-59-0x00000233A4810000-0x00000233A4811000-memory.dmp

Filesize
4KB

Download
memory/4184-32-0x00000233A4810000-0x00000233A4811000-memory.dmp

Filesize
4KB

Download
memory/4732-18-0x0000019CB10F0000-0x0000019CB1360000-memory.dmp

Filesize
2.4MB

Download
memory/4732-17-0x0000019CB10D0000-0x0000019CB10D1000-memory.dmp

Filesize
4KB

Download
memory/4732-14-0x0000019CB10D0000-0x0000019CB10D1000-memory.dmp

Filesize
4KB

Download
memory/4732-4-0x0000019CB10F0000-0x0000019CB1360000-memory.dmp

Filesize
2.4MB

Download