strrat | 7c79a4eed33e40230de0b79cef9fc5425916aea40ae610b234720f609f50b764

Analysis

max time kernel
566s
max time network
571s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05-03-2024 11:41

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General

Target

Prosba-o-oferte.jar
Size

41KB
MD5

b225f83a537673f3053e63db84a30662
SHA1

55ea9f056d46bdd03a78df3e885565ec845a31c1
SHA256

7c79a4eed33e40230de0b79cef9fc5425916aea40ae610b234720f609f50b764
SHA512

f5453270287724b2b2e576feb9745c35dfb3069029b0d28a69e9415e6b40f55bf7e91cff0f42217c6024d7d0e8e8d20dc47cfa9d08c4182a2406c13378aef523
SSDEEP

768:3/AKKv6LboyiFV9jKJ6K71Ifu+Lh+FP+6I3zY103e0NhyDEj:YJvIaV9LqCush+FPKs10ufDE

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\Prosba-o-oferte.jar java.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Prosba-o-oferte.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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Prosba-o-oferte = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Prosba-o-oferte.jar\""	java.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Prosba-o-oferte = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Prosba-o-oferte.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

2772 schtasks.exe

pid	process
2772	schtasks.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

java.execmd.exe

description	pid	process	target process
PID 1760 wrote to memory of 2848	1760	java.exe	cmd.exe
PID 1760 wrote to memory of 2848	1760	java.exe	cmd.exe
PID 1760 wrote to memory of 2848	1760	java.exe	cmd.exe
PID 1760 wrote to memory of 2600	1760	java.exe	java.exe
PID 1760 wrote to memory of 2600	1760	java.exe	java.exe
PID 1760 wrote to memory of 2600	1760	java.exe	java.exe
PID 2848 wrote to memory of 2772	2848	cmd.exe	schtasks.exe
PID 2848 wrote to memory of 2772	2848	cmd.exe	schtasks.exe
PID 2848 wrote to memory of 2772	2848	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\Prosba-o-oferte.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1760

C:\Windows\system32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Prosba-o-oferte.jar"
2⤵
- Suspicious use of WriteProcessMemory
PID:2848

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Prosba-o-oferte.jar"
3⤵
- Creates scheduled task(s)
PID:2772

C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\Prosba-o-oferte.jar"
2⤵
PID:2600

Network

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

Replay Monitor

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Prosba-o-oferte.jar
Filesize
41KB

MD5
b225f83a537673f3053e63db84a30662

SHA1
55ea9f056d46bdd03a78df3e885565ec845a31c1

SHA256
7c79a4eed33e40230de0b79cef9fc5425916aea40ae610b234720f609f50b764

SHA512
f5453270287724b2b2e576feb9745c35dfb3069029b0d28a69e9415e6b40f55bf7e91cff0f42217c6024d7d0e8e8d20dc47cfa9d08c4182a2406c13378aef523

Download Submit
memory/1760-9-0x0000000002170000-0x0000000005170000-memory.dmp

Filesize
48.0MB

Download
memory/1760-10-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2600-24-0x0000000002130000-0x0000000005130000-memory.dmp

Filesize
48.0MB

Download
memory/2600-28-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download
memory/2600-30-0x0000000002130000-0x0000000005130000-memory.dmp

Filesize
48.0MB

Download