strrat | de1522a546abbff8b5cdde813b89e754ab0da6894e25bba0243a7a79e26a99d5

Analysis

max time kernel
208s
max time network
209s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
01-02-2024 03:56

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General

Target

SB COPY6827366180.PDF.jar
Size

40KB
MD5

0ec695117cb3bf0f1a8cef9a77f7675a
SHA1

e1152ed31dad5535bbeb5b63d61491d5fadd4787
SHA256

243a5315c031347617620bb5c8b694b3308932530519abc04e00c7c4fd7f7c62
SHA512

b9b27c10a0363fc38a219e8c9b795e284003e94b5851c30e30907b766bba88aa2e81701edd222461a5379a4daca0f094527f2fdca3da132aafede02d27bc8bf7
SSDEEP

768:qzXFN70ZIv326vOAZT1S0dNMAkuyC9iS7hKouufPN7c:qzXj7eYNJkchvN4

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\SB COPY6827366180.PDF.jar java.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SB COPY6827366180.PDF.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-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\SB COPY6827366180.PDF = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\SB COPY6827366180.PDF.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SB COPY6827366180.PDF = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\SB COPY6827366180.PDF.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

2596 schtasks.exe

pid	process
2596	schtasks.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

java.execmd.exe

description	pid	process	target process
PID 2752 wrote to memory of 3020	2752	java.exe	cmd.exe
PID 2752 wrote to memory of 3020	2752	java.exe	cmd.exe
PID 2752 wrote to memory of 3020	2752	java.exe	cmd.exe
PID 2752 wrote to memory of 2560	2752	java.exe	java.exe
PID 2752 wrote to memory of 2560	2752	java.exe	java.exe
PID 2752 wrote to memory of 2560	2752	java.exe	java.exe
PID 3020 wrote to memory of 2596	3020	cmd.exe	schtasks.exe
PID 3020 wrote to memory of 2596	3020	cmd.exe	schtasks.exe
PID 3020 wrote to memory of 2596	3020	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\SB COPY6827366180.PDF.jar"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2752

C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\SB COPY6827366180.PDF.jar"
2⤵
PID:2560

C:\Windows\system32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\SB COPY6827366180.PDF.jar"
2⤵
- Suspicious use of WriteProcessMemory
PID:3020

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\SB COPY6827366180.PDF.jar"
3⤵
- Creates scheduled task(s)
PID:2596

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\SB COPY6827366180.PDF.jar
Filesize
40KB

MD5
0ec695117cb3bf0f1a8cef9a77f7675a

SHA1
e1152ed31dad5535bbeb5b63d61491d5fadd4787

SHA256
243a5315c031347617620bb5c8b694b3308932530519abc04e00c7c4fd7f7c62

SHA512
b9b27c10a0363fc38a219e8c9b795e284003e94b5851c30e30907b766bba88aa2e81701edd222461a5379a4daca0f094527f2fdca3da132aafede02d27bc8bf7

Download Submit
memory/2560-21-0x0000000002640000-0x0000000005640000-memory.dmp

Filesize
48.0MB

Download
memory/2560-28-0x0000000001B70000-0x0000000001B71000-memory.dmp

Filesize
4KB

Download
memory/2560-30-0x0000000002640000-0x0000000005640000-memory.dmp

Filesize
48.0MB

Download
memory/2752-5-0x0000000002640000-0x0000000005640000-memory.dmp

Filesize
48.0MB

Download
memory/2752-10-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download