strrat | adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56

General

Target

adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56.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\adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56.jar	java.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4860 icacls.exe

pid	process
4860	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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56 = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56.jar\""	java.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56 = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56.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\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\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\symbols\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\server\symbols\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\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jvm.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

5044 schtasks.exe

pid	process
5044	schtasks.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

java.execmd.exe

description	pid	process	target process
PID 4284 wrote to memory of 4860	4284	java.exe	icacls.exe
PID 4284 wrote to memory of 4860	4284	java.exe	icacls.exe
PID 4284 wrote to memory of 2896	4284	java.exe	cmd.exe
PID 4284 wrote to memory of 2896	4284	java.exe	cmd.exe
PID 4284 wrote to memory of 2952	4284	java.exe	java.exe
PID 4284 wrote to memory of 2952	4284	java.exe	java.exe
PID 2896 wrote to memory of 5044	2896	cmd.exe	schtasks.exe
PID 2896 wrote to memory of 5044	2896	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\adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4284

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:4860

C:\Windows\SYSTEM32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56.jar"
2⤵
- Suspicious use of WriteProcessMemory
PID:2896

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56.jar"
3⤵
- Creates scheduled task(s)
PID:5044

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\adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56.jar"
2⤵
- Drops file in Program Files directory
PID:2952

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\adb3339242b796ed48346e8d3228c8d3157ea01fbbf1590f3dbd255d62036b56.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
96dce46d58f49e14d19edf4c6bdc9d7f

SHA1
d2fffe37751e7f15dad37a688dc4c44f5598c224

SHA256
b0af15c5a91a51df1871ebd226fd62930c00bc4062caeb67622f2b483b249285

SHA512
f67341ee421f79a8c1c191c7902f64493709d18dd3671ed8e46035402b4a4e087eb576ea3646cf276aef12062b9622e7321d168199f73c0897a2a63c218115a4

Download Submit
memory/2952-54-0x000002B1277A0000-0x000002B1287A0000-memory.dmp

Filesize
16.0MB

Download
memory/2952-52-0x000002B1277A0000-0x000002B1287A0000-memory.dmp

Filesize
16.0MB

Download
memory/2952-43-0x000002B1277A0000-0x000002B1287A0000-memory.dmp

Filesize
16.0MB

Download
memory/4284-23-0x0000020681AA0000-0x0000020682AA0000-memory.dmp

Filesize
16.0MB

Download
memory/4284-31-0x0000020681D20000-0x0000020681D30000-memory.dmp

Filesize
64KB

Download
memory/4284-32-0x0000020681D80000-0x0000020681D90000-memory.dmp

Filesize
64KB

Download
memory/4284-33-0x0000020681D40000-0x0000020681D50000-memory.dmp

Filesize
64KB

Download
memory/4284-34-0x0000020681D50000-0x0000020681D60000-memory.dmp

Filesize
64KB

Download
memory/4284-35-0x0000020681D60000-0x0000020681D70000-memory.dmp

Filesize
64KB

Download
memory/4284-38-0x0000020681AA0000-0x0000020682AA0000-memory.dmp

Filesize
16.0MB

Download
memory/4284-4-0x0000020681AA0000-0x0000020682AA0000-memory.dmp

Filesize
16.0MB

Download
memory/4284-17-0x0000020681AA0000-0x0000020682AA0000-memory.dmp

Filesize
16.0MB

Download
memory/4284-53-0x0000020681AA0000-0x0000020682AA0000-memory.dmp

Filesize
16.0MB

Download
memory/4284-15-0x0000020681A80000-0x0000020681A81000-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