strrat | 9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b

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 discovery persistence stealer trojan

Malware Config

Extracted

Family

strrat

C2

elastsolek21.duckdns.org:4781

zekeriyasolek45.duckdns.org:4781

Attributes

license_id
WFC9-W4KB-388F-9KY1-S6JV
plugins_url
http://jbfrost.live/strigoi/server/?hwid=1&lid=m&ht=5
scheduled_task
true
secondary_startup
true
startup
true

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat

Drops startup file 1 IoCs

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4996	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isteme-Formu = "\"C:\\Program Files\\Java\\jre-1.8\\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\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Isteme-Formu.jar\""	java.exe

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\symbols\dll\ntdll.pdb	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

pid	Process
4832	schtasks.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5036 wrote to memory of 4996	5036	java.exe	89
PID 5036 wrote to memory of 4996	5036	java.exe	89
PID 5036 wrote to memory of 4472	5036	java.exe	92
PID 5036 wrote to memory of 4472	5036	java.exe	92
PID 5036 wrote to memory of 2772	5036	java.exe	93
PID 5036 wrote to memory of 2772	5036	java.exe	93
PID 4472 wrote to memory of 4832	4472	cmd.exe	96
PID 4472 wrote to memory of 4832	4472	cmd.exe	96

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\Isteme-Formu.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:5036
- C:\Windows\system32\icacls.exe
  C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
  2⤵
  - Modifies file permissions
  PID:4996
- 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:4472
- - 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:4832
- 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\Isteme-Formu.jar"
  2⤵
  - Drops file in Program Files directory
  PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Isteme-Formu.jar

Filesize
64KB

MD5
9ad218d305544323b46f77f485e32d26

SHA1
2d2ce27ef293cef704327d547b1a1d7054ec6dad

SHA256
bdf46dfe4d433f31e57f6894e5ee468debec0b2f81294040f060d055b485360f

SHA512
fa40ee20c240b335dcf71784477086f0d5b84ee5a7a16be2ed256f69b6dcf59e178758a555ef5fbe3ca7c66092279cb13105d25e0db16bc38cf1d4fc16271078

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

Filesize
46B

MD5
07cef5e2d122e3877bf7556bdb958bf4

SHA1
7bde0babb1e87b39075efcc4b3605bdbd0b6ef3e

SHA256
a95d4f12b649ab31923e1fcff7611c95276b721a658d5fbeffd8d2e71410e62d

SHA512
04b56e7635d6b5a90e33de663e26577673bab50377278334da321458d60347d9857455d95490fce900f161a9004bf823e5e833334231b17514aeaa954f033785

Download Submit
C:\Users\Admin\AppData\Roaming\Isteme-Formu.jar

Filesize
64KB

MD5
1437058c6d28f9a7a3ccdeaceda607bd

SHA1
5d7b2f57c74739f8e077dafd25964ef3f990b0ca

SHA256
9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b

SHA512
835b0a988b39f0615d5a7d06a980e26cab4eae567aaa7b5636e076a89e12b132b3def781b891fedfb434844f2348cbe89ae0ead8c014b3f1e02b21628a4d7ef9

Download Submit
memory/2772-60-0x000001BB2B8F0000-0x000001BB2C8F0000-memory.dmp

Filesize
16.0MB

Download
memory/2772-59-0x000001BB2BBA0000-0x000001BB2BBB0000-memory.dmp

Filesize
64KB

Download
memory/2772-58-0x000001BB2BB90000-0x000001BB2BBA0000-memory.dmp

Filesize
64KB

Download
memory/2772-57-0x000001BB2BB80000-0x000001BB2BB90000-memory.dmp

Filesize
64KB

Download
memory/2772-56-0x000001BB2BB70000-0x000001BB2BB80000-memory.dmp

Filesize
64KB

Download
memory/2772-52-0x000001BB2B8F0000-0x000001BB2C8F0000-memory.dmp

Filesize
16.0MB

Download
memory/2772-47-0x000001BB2A060000-0x000001BB2A061000-memory.dmp

Filesize
4KB

Download
memory/2772-40-0x000001BB2B8F0000-0x000001BB2C8F0000-memory.dmp

Filesize
16.0MB

Download
memory/5036-28-0x0000024E69D40000-0x0000024E6AD40000-memory.dmp

Filesize
16.0MB

Download
memory/5036-34-0x0000024E6A020000-0x0000024E6A030000-memory.dmp

Filesize
64KB

Download
memory/5036-33-0x0000024E6A000000-0x0000024E6A010000-memory.dmp

Filesize
64KB

Download
memory/5036-32-0x0000024E6A010000-0x0000024E6A020000-memory.dmp

Filesize
64KB

Download
memory/5036-31-0x0000024E69FF0000-0x0000024E6A000000-memory.dmp

Filesize
64KB

Download
memory/5036-30-0x0000024E69FE0000-0x0000024E69FF0000-memory.dmp

Filesize
64KB

Download
memory/5036-29-0x0000024E69FC0000-0x0000024E69FD0000-memory.dmp

Filesize
64KB

Download
memory/5036-4-0x0000024E69D40000-0x0000024E6AD40000-memory.dmp

Filesize
16.0MB

Download
memory/5036-18-0x0000024E69D40000-0x0000024E6AD40000-memory.dmp

Filesize
16.0MB

Download
memory/5036-12-0x0000024E68460000-0x0000024E68461000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads