strrat | adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56

General

Target

FIYAT-ISTEMI.jar
Size

64KB
MD5

c5ccda6e6a108412c4c34cd17f3b421d
SHA1

e9d90ce1bc7881a45cea1a583ce41724f31310d2
SHA256

adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56
SHA512

1d7c10bfe158fa0c75750353ebd9102afcf3f74643d2a41f7ff8563b89bc395ca3470850d8fd84cd6a1d41c8cc2e0c2ab7b2f7a4979a481bd5492c8a591fa47e
SSDEEP

1536:grXv/fcVMHH45ofDI4extOPLjOU09xJ9d3W4U0w:gL/xHY5SStOPLjwM4U3

Score

10^/10

strrat discovery 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\FIYAT-ISTEMI.jar java.exe
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

3712 icacls.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FIYAT-ISTEMI.jar	java.exe

pid	process
3712	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\FIYAT-ISTEMI = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\FIYAT-ISTEMI.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\FIYAT-ISTEMI = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\FIYAT-ISTEMI.jar\""	java.exe

Drops file in Program Files directory 12 IoCs

Processes:

java.exe

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

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

4176 schtasks.exe

pid	process
4176	schtasks.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

java.execmd.exe

description	pid	process	target process
PID 1612 wrote to memory of 3712	1612	java.exe	icacls.exe
PID 1612 wrote to memory of 3712	1612	java.exe	icacls.exe
PID 1612 wrote to memory of 3676	1612	java.exe	cmd.exe
PID 1612 wrote to memory of 3676	1612	java.exe	cmd.exe
PID 1612 wrote to memory of 3912	1612	java.exe	java.exe
PID 1612 wrote to memory of 3912	1612	java.exe	java.exe
PID 3676 wrote to memory of 4176	3676	cmd.exe	schtasks.exe
PID 3676 wrote to memory of 4176	3676	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:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\FIYAT-ISTEMI.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1612

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:3712

C:\Windows\SYSTEM32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\FIYAT-ISTEMI.jar"
2⤵
- Suspicious use of WriteProcessMemory
PID:3676

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\FIYAT-ISTEMI.jar"
3⤵
- Creates scheduled task(s)
PID:4176

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\FIYAT-ISTEMI.jar"
2⤵
- Drops file in Program Files directory
PID:3912

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=3912 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:2972

Network

MITRE ATT&CK Matrix ATT&CK v13

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

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

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\FIYAT-ISTEMI.jar
Filesize
64KB

MD5
c5ccda6e6a108412c4c34cd17f3b421d

SHA1
e9d90ce1bc7881a45cea1a583ce41724f31310d2

SHA256
adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56

SHA512
1d7c10bfe158fa0c75750353ebd9102afcf3f74643d2a41f7ff8563b89bc395ca3470850d8fd84cd6a1d41c8cc2e0c2ab7b2f7a4979a481bd5492c8a591fa47e

Download Submit
C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
Filesize
46B

MD5
cd74e5631953435973877c95e264e1f6

SHA1
00322efa5aeae0c36c3cea4eee6906d0d59b5b74

SHA256
f53a7ff37824b4a04ffe1728eff8a5f972a756274f5f2061db72916d049ad5ff

SHA512
ec15d1afd67d1aeb5d34303fa76b20edc697701d77c11f31fc8e252018c019990a60c8b825f3385ae498b41e6c0d9e0720b84039b0b8a54d53497525c1e75347

Download Submit
memory/1612-38-0x00000191274E0000-0x00000191274F0000-memory.dmp

Filesize
64KB

Download
memory/1612-41-0x0000019127220000-0x0000019128220000-memory.dmp

Filesize
16.0MB

Download
memory/1612-23-0x0000019127220000-0x0000019128220000-memory.dmp

Filesize
16.0MB

Download
memory/1612-12-0x00000191259B0000-0x00000191259B1000-memory.dmp

Filesize
4KB

Download
memory/1612-32-0x0000019127220000-0x0000019128220000-memory.dmp

Filesize
16.0MB

Download
memory/1612-34-0x00000191274A0000-0x00000191274B0000-memory.dmp

Filesize
64KB

Download
memory/1612-35-0x00000191274D0000-0x00000191274E0000-memory.dmp

Filesize
64KB

Download
memory/1612-36-0x0000019127510000-0x0000019127520000-memory.dmp

Filesize
64KB

Download
memory/1612-2-0x0000019127220000-0x0000019128220000-memory.dmp

Filesize
16.0MB

Download
memory/1612-13-0x00000191259B0000-0x00000191259B1000-memory.dmp

Filesize
4KB

Download
memory/1612-39-0x00000191274F0000-0x0000019127500000-memory.dmp

Filesize
64KB

Download
memory/1612-43-0x0000019127500000-0x0000019127510000-memory.dmp

Filesize
64KB

Download
memory/1612-62-0x0000019127220000-0x0000019128220000-memory.dmp

Filesize
16.0MB

Download
memory/3912-53-0x00000250EF180000-0x00000250EF181000-memory.dmp

Filesize
4KB

Download
memory/3912-54-0x00000250EF180000-0x00000250EF181000-memory.dmp

Filesize
4KB

Download
memory/3912-61-0x00000250EF420000-0x00000250EF430000-memory.dmp

Filesize
64KB

Download
memory/3912-60-0x00000250EF410000-0x00000250EF420000-memory.dmp

Filesize
64KB

Download
memory/3912-46-0x00000250EF1A0000-0x00000250F01A0000-memory.dmp

Filesize
16.0MB

Download
memory/3912-63-0x00000250EF1A0000-0x00000250F01A0000-memory.dmp

Filesize
16.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads