strrat | 9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b

General

Target

9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b.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

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\9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b.jar	java.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4624 icacls.exe

pid	process
4624	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-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b.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\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\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\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\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\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\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

5492 schtasks.exe

pid	process
5492	schtasks.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

java.execmd.exe

description	pid	process	target process
PID 5236 wrote to memory of 4624	5236	java.exe	icacls.exe
PID 5236 wrote to memory of 4624	5236	java.exe	icacls.exe
PID 5236 wrote to memory of 3120	5236	java.exe	cmd.exe
PID 5236 wrote to memory of 3120	5236	java.exe	cmd.exe
PID 5236 wrote to memory of 5184	5236	java.exe	java.exe
PID 5236 wrote to memory of 5184	5236	java.exe	java.exe
PID 3120 wrote to memory of 5492	3120	cmd.exe	schtasks.exe
PID 3120 wrote to memory of 5492	3120	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\9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:5236

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:4624

C:\Windows\SYSTEM32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b.jar"
2⤵
- Suspicious use of WriteProcessMemory
PID:3120

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b.jar"
3⤵
- Creates scheduled task(s)
PID:5492

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\9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b.jar"
2⤵
- Drops file in Program Files directory
PID:5184

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\9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b.jar
Filesize
64KB

MD5
1437058c6d28f9a7a3ccdeaceda607bd

SHA1
5d7b2f57c74739f8e077dafd25964ef3f990b0ca

SHA256
9c3abdcc93fb3e179e4ea80afd21df14b6a6f7b23669cef03de2741fb0c0485b

SHA512
835b0a988b39f0615d5a7d06a980e26cab4eae567aaa7b5636e076a89e12b132b3def781b891fedfb434844f2348cbe89ae0ead8c014b3f1e02b21628a4d7ef9

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

MD5
6b99841116756e63bbe36c5fb76e3629

SHA1
55b8cd437ddd03c1a3ed04bf2af104f93be01d58

SHA256
8ef477e37907770c43356aa62b50084c568a62c72cf3b7a5da984439d0589da7

SHA512
7c989a81279421df257f004bdf65b5bda0d77407b97d1cf2fe0629c720c2e65411d12e415a17910a68dba3f839c44c4ce35629cdd9e935de23cb39a2b708d8f2

Download Submit
memory/5184-43-0x0000019D80000000-0x0000019D81000000-memory.dmp

Filesize
16.0MB

Download
memory/5184-53-0x0000019D80000000-0x0000019D81000000-memory.dmp

Filesize
16.0MB

Download
memory/5184-52-0x0000019D80000000-0x0000019D81000000-memory.dmp

Filesize
16.0MB

Download
memory/5236-32-0x00000192E7440000-0x00000192E7450000-memory.dmp

Filesize
64KB

Download
memory/5236-4-0x00000192E71A0000-0x00000192E81A0000-memory.dmp

Filesize
16.0MB

Download
memory/5236-31-0x00000192E7430000-0x00000192E7440000-memory.dmp

Filesize
64KB

Download
memory/5236-33-0x00000192E7450000-0x00000192E7460000-memory.dmp

Filesize
64KB

Download
memory/5236-34-0x00000192E7460000-0x00000192E7470000-memory.dmp

Filesize
64KB

Download
memory/5236-35-0x00000192E7470000-0x00000192E7480000-memory.dmp

Filesize
64KB

Download
memory/5236-36-0x00000192E7480000-0x00000192E7490000-memory.dmp

Filesize
64KB

Download
memory/5236-30-0x00000192E71A0000-0x00000192E81A0000-memory.dmp

Filesize
16.0MB

Download
memory/5236-18-0x00000192E71A0000-0x00000192E81A0000-memory.dmp

Filesize
16.0MB

Download
memory/5236-12-0x00000192E58E0000-0x00000192E58E1000-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