strrat | 9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19-03-2024 07:07

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General

Target

Isteme-Formu.jar
Size

64KB
MD5

1437058c6d28f9a7a3ccdeaceda607bd
SHA1

5d7b2f57c74739f8e077dafd25964ef3f990b0ca
SHA256

9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b
SHA512

835b0a988b39f0615d5a7d06a980e26cab4eae567aaa7b5636e076a89e12b132b3def781b891fedfb434844f2348cbe89ae0ead8c014b3f1e02b21628a4d7ef9
SSDEEP

1536:fs4vu4cVMHH4/o0oJ4pxtOPLYr/09xIYd3W4Un:fXuMHY/JhtOPLYey4Un

Score

10^/10

strrat persistence stealer trojan

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat
Drops startup file 1 IoCs

Processes:

java.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Isteme-Formu.jar java.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Isteme-Formu.jar	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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isteme-Formu = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Isteme-Formu.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isteme-Formu = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Isteme-Formu.jar\""	java.exe

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

2600 schtasks.exe

pid	process
2600	schtasks.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

java.execmd.exe

description	pid	process	target process
PID 2932 wrote to memory of 2680	2932	java.exe	cmd.exe
PID 2932 wrote to memory of 2680	2932	java.exe	cmd.exe
PID 2932 wrote to memory of 2680	2932	java.exe	cmd.exe
PID 2932 wrote to memory of 2692	2932	java.exe	java.exe
PID 2932 wrote to memory of 2692	2932	java.exe	java.exe
PID 2932 wrote to memory of 2692	2932	java.exe	java.exe
PID 2680 wrote to memory of 2600	2680	cmd.exe	schtasks.exe
PID 2680 wrote to memory of 2600	2680	cmd.exe	schtasks.exe
PID 2680 wrote to memory of 2600	2680	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\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\Isteme-Formu.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2932

C:\Windows\system32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Isteme-Formu.jar"
2⤵
- Suspicious use of WriteProcessMemory
PID:2680

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Isteme-Formu.jar"
3⤵
- Creates scheduled task(s)
PID:2600

C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\Isteme-Formu.jar"
2⤵
PID:2692

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Isteme-Formu.jar
Filesize
64KB

MD5
1437058c6d28f9a7a3ccdeaceda607bd

SHA1
5d7b2f57c74739f8e077dafd25964ef3f990b0ca

SHA256
9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b

SHA512
835b0a988b39f0615d5a7d06a980e26cab4eae567aaa7b5636e076a89e12b132b3def781b891fedfb434844f2348cbe89ae0ead8c014b3f1e02b21628a4d7ef9

Download Submit
memory/2692-22-0x00000000026D0000-0x00000000056D0000-memory.dmp

Filesize
48.0MB

Download
memory/2692-29-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/2692-30-0x00000000026D0000-0x00000000056D0000-memory.dmp

Filesize
48.0MB

Download
memory/2932-6-0x00000000025B0000-0x00000000055B0000-memory.dmp

Filesize
48.0MB

Download
memory/2932-10-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads