strrat | e1d6f319e4b448e3e487d6c6ab0b7b4172e2059abc90f7e8156fd661cbb1d513

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7v20210410
submitted
11-05-2021 06:25

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General

Target

ATTACHED DRAWING AND SPECIFICATION.jar
Size

125KB
MD5

18031dda20407c7250768c264e747e4d
SHA1

c29d744f9b26f6940215c1aae50fcd5de99fa55f
SHA256

e1d6f319e4b448e3e487d6c6ab0b7b4172e2059abc90f7e8156fd661cbb1d513
SHA512

d0327d53d82b9f1eebdf80ca5e5e33d6e4f60fd7d3d1ec0c7011ef4ab71b7dea73d25b7e1dd97d0a7a6d6ab68f2bc0292ec07224b48cd88abc00d8eb26a80021

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\onpyfjeck.txt java.exe
Loads dropped DLL 2 IoCs

Processes:

java.exejava.exe

pid process

1508 java.exe
1744 java.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\onpyfjeck.txt	java.exe

pid	process
1508	java.exe
1744	java.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

java.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\onpyfjeck = "\"C:\\Users\\Admin\\AppData\\Roaming\\onpyfjeck.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\onpyfjeck = "\"C:\\Users\\Admin\\AppData\\Roaming\\onpyfjeck.txt\""	java.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
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
T1053

Processes:

schtasks.exe

pid process

2040 schtasks.exe
Runs .reg file with regedit 1 IoCs

Processes:

regedit.exe

pid process

1800 regedit.exe

pid	process
2040	schtasks.exe

pid	process
1800	regedit.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

java.exewscript.exejavaw.exejava.execmd.exe

description	pid	process	target process
PID 1756 wrote to memory of 1952	1756	java.exe	wscript.exe
PID 1756 wrote to memory of 1952	1756	java.exe	wscript.exe
PID 1756 wrote to memory of 1952	1756	java.exe	wscript.exe
PID 1952 wrote to memory of 1800	1952	wscript.exe	regedit.exe
PID 1952 wrote to memory of 1800	1952	wscript.exe	regedit.exe
PID 1952 wrote to memory of 1800	1952	wscript.exe	regedit.exe
PID 1952 wrote to memory of 572	1952	wscript.exe	javaw.exe
PID 1952 wrote to memory of 572	1952	wscript.exe	javaw.exe
PID 1952 wrote to memory of 572	1952	wscript.exe	javaw.exe
PID 572 wrote to memory of 1508	572	javaw.exe	java.exe
PID 572 wrote to memory of 1508	572	javaw.exe	java.exe
PID 572 wrote to memory of 1508	572	javaw.exe	java.exe
PID 1508 wrote to memory of 1776	1508	java.exe	cmd.exe
PID 1508 wrote to memory of 1776	1508	java.exe	cmd.exe
PID 1508 wrote to memory of 1776	1508	java.exe	cmd.exe
PID 1508 wrote to memory of 1744	1508	java.exe	java.exe
PID 1508 wrote to memory of 1744	1508	java.exe	java.exe
PID 1508 wrote to memory of 1744	1508	java.exe	java.exe
PID 1776 wrote to memory of 2040	1776	cmd.exe	schtasks.exe
PID 1776 wrote to memory of 2040	1776	cmd.exe	schtasks.exe
PID 1776 wrote to memory of 2040	1776	cmd.exe	schtasks.exe

C:\Windows\system32\java.exe
java -jar "C:\Users\Admin\AppData\Local\Temp\ATTACHED DRAWING AND SPECIFICATION.jar"
1⤵
- Suspicious use of WriteProcessMemory
PID:1756

C:\Windows\system32\wscript.exe
wscript C:\Users\Admin\hzppuzylpb.js
2⤵
- Suspicious use of WriteProcessMemory
PID:1952

C:\Windows\regedit.exe
"regedit.exe" "C:\Users\Admin\AppData\Local\Temp\ebgeaegdbdecaedfebace.reg"
3⤵
- Runs .reg file with regedit
PID:1800

C:\Program Files\Java\jre7\bin\javaw.exe
"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\onpyfjeck.txt"
3⤵
- Suspicious use of WriteProcessMemory
PID:572

C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\onpyfjeck.txt"
4⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1508

C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\onpyfjeck.txt"
5⤵
- Loads dropped DLL
PID:1744

C:\Windows\system32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\onpyfjeck.txt"
5⤵
- Suspicious use of WriteProcessMemory
PID:1776

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\onpyfjeck.txt"
6⤵
- Creates scheduled task(s)
PID:2040

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ebgeaegdbdecaedfebace.reg
MD5
0e5411d7ecba9a435afda71c6c39d8fd

SHA1
2d6812052bf7be1b5e213e1d813ae39faa07284c

SHA256
cb68d50df5817e51ec5b2f72893dc4c749bf3504519107e0a78dda84d55f09e2

SHA512
903ac6e5c8a12607af267b54bcbbedfa5542c5b4f7ea289ab7c6a32a424d5b846ae406d830cb4ad48e2b46f92c504163c0856af8c3e09685a8855f39f616ddb1

Download Submit
C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna1837222617293345141.dll
MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2513283230-931923277-594887482-1000\83aa4cc77f591dfc2374580bbd95f6ba_17ebba21-ade9-4848-b865-5b9359ee593d
MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

Download Submit
C:\Users\Admin\AppData\Roaming\lib\jna-5.5.0.jar
MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

Download Submit
C:\Users\Admin\AppData\Roaming\lib\jna-platform-5.5.0.jar
MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

Download Submit
C:\Users\Admin\AppData\Roaming\lib\sqlite-jdbc-3.14.2.1.jar
MD5
b33387e15ab150a7bf560abdc73c3bec

SHA1
66b8075784131f578ef893fd7674273f709b9a4c

SHA256
2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

SHA512
25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

Download Submit
C:\Users\Admin\AppData\Roaming\lib\system-hook-3.5.jar
MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
C:\Users\Admin\AppData\Roaming\onpyfjeck.txt
MD5
bfa41b97b438a48a3a2943eee4ab9d7b

SHA1
36a1a0d2b0125b87b0841d1db0ca18cf3aac4b0e

SHA256
1036b983cd81fe9134e2c1b2c72a4c29c111b5983a61324e5cadee33d479452c

SHA512
237a1b5fd74d753f431c38d3437fb75006059788ec72085035020d19631c987bb7f2b2823729d5c7d84accb75f782e0aa89322f4a88019f5fc14dcc2e9938c29

Download Submit
C:\Users\Admin\AppData\Roaming\onpyfjeck.txt
MD5
bfa41b97b438a48a3a2943eee4ab9d7b

SHA1
36a1a0d2b0125b87b0841d1db0ca18cf3aac4b0e

SHA256
1036b983cd81fe9134e2c1b2c72a4c29c111b5983a61324e5cadee33d479452c

SHA512
237a1b5fd74d753f431c38d3437fb75006059788ec72085035020d19631c987bb7f2b2823729d5c7d84accb75f782e0aa89322f4a88019f5fc14dcc2e9938c29

Download Submit
C:\Users\Admin\hzppuzylpb.js
MD5
a627bab6b75c0dfff09ee951974926ff

SHA1
e8c596f89f222137fcbdc99c613cfa5f57f6c82b

SHA256
d84782f48d629c19d022c75401669ef44bdd5b1464ddee6170fcf568845a8ddd

SHA512
fc97dee9193fc9ba6836d10daf8e9dcb900f5a05ccacfcfa337d05c3281691c6f7e4e1b17ebd75332b2574aa868fd7d7d0f99c9febd454a971666670fff74fd0

Download Submit
C:\Users\Admin\lib\jna-5.5.0.jar
MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

Download Submit
C:\Users\Admin\lib\jna-platform-5.5.0.jar
MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

Download Submit
C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
MD5
b33387e15ab150a7bf560abdc73c3bec

SHA1
66b8075784131f578ef893fd7674273f709b9a4c

SHA256
2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

SHA512
25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

Download Submit
C:\Users\Admin\lib\system-hook-3.5.jar
MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
C:\Users\Admin\onpyfjeck.txt
MD5
bfa41b97b438a48a3a2943eee4ab9d7b

SHA1
36a1a0d2b0125b87b0841d1db0ca18cf3aac4b0e

SHA256
1036b983cd81fe9134e2c1b2c72a4c29c111b5983a61324e5cadee33d479452c

SHA512
237a1b5fd74d753f431c38d3437fb75006059788ec72085035020d19631c987bb7f2b2823729d5c7d84accb75f782e0aa89322f4a88019f5fc14dcc2e9938c29

Download Submit
\Users\Admin\AppData\Local\Temp\jna-63116079\jna1837222617293345141.dll
MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
\Users\Admin\AppData\Local\Temp\jna-63116079\jna6254536180177585024.dll
MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
memory/572-93-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-85-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-87-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-89-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-90-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-91-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-92-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-69-0x0000000000000000-mapping.dmp

Download
memory/572-94-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-74-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-84-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-72-0x0000000002140000-0x00000000023B0000-memory.dmp

Filesize
2.4MB

Download
memory/572-73-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-83-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-81-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-77-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/572-76-0x0000000001B40000-0x0000000001B41000-memory.dmp

Filesize
4KB

Download
memory/1508-98-0x0000000000000000-mapping.dmp

Download
memory/1508-115-0x0000000000420000-0x0000000000421000-memory.dmp

Filesize
4KB

Download
memory/1508-102-0x0000000000420000-0x0000000000421000-memory.dmp

Filesize
4KB

Download
memory/1508-103-0x0000000002040000-0x00000000022B0000-memory.dmp

Filesize
2.4MB

Download
memory/1744-111-0x0000000000000000-mapping.dmp

Download
memory/1744-131-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1744-119-0x0000000002030000-0x00000000022A0000-memory.dmp

Filesize
2.4MB

Download
memory/1744-123-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1756-63-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/1756-60-0x000007FEFBD21000-0x000007FEFBD23000-memory.dmp

Filesize
8KB

Download
memory/1756-61-0x00000000021C0000-0x0000000002430000-memory.dmp

Filesize
2.4MB

Download
memory/1776-110-0x0000000000000000-mapping.dmp

Download
memory/1800-67-0x0000000000410000-0x0000000000411000-memory.dmp

Filesize
4KB

Download
memory/1800-65-0x0000000000000000-mapping.dmp

Download
memory/1952-62-0x0000000000000000-mapping.dmp

Download
memory/2040-113-0x0000000000000000-mapping.dmp

Download