46a4cab8778211dc9bc824b607741cd03c8fdb799a8e90d106efc22f57b06281

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7v20210410
submitted
22-04-2021 06:02

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General

Target

PO#5200668.jar
Size

175KB
MD5

3ad760b40ee49e61becff81d532ac85e
SHA1

1a876cf8130ece99630865cd70810f3dd5166679
SHA256

46a4cab8778211dc9bc824b607741cd03c8fdb799a8e90d106efc22f57b06281
SHA512

d7fdee20687ce29d41b1620c8afa2e94c4f8f40c049542148942bbf2ac05646f045bd0cce1a64999e1ef4ff3d6ff99bab4819db76b35df8c65f648089ca9b5ff

Score

7^/10

persistence

Malware Config

Signatures

Drops startup file 1 IoCs

Processes:

java.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uzyjhvfo.txt java.exe
Loads dropped DLL 2 IoCs

Processes:

java.exejava.exe

pid process

1384 java.exe
900 java.exe

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

pid	process
1384	java.exe
900	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\uzyjhvfo = "\"C:\\Users\\Admin\\AppData\\Roaming\\uzyjhvfo.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\uzyjhvfo = "\"C:\\Users\\Admin\\AppData\\Roaming\\uzyjhvfo.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

1740 schtasks.exe

pid	process
1740	schtasks.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

java.exewscript.exejavaw.exejava.execmd.exe

description	pid	process	target process
PID 1756 wrote to memory of 1792	1756	java.exe	wscript.exe
PID 1756 wrote to memory of 1792	1756	java.exe	wscript.exe
PID 1756 wrote to memory of 1792	1756	java.exe	wscript.exe
PID 1792 wrote to memory of 1724	1792	wscript.exe	javaw.exe
PID 1792 wrote to memory of 1724	1792	wscript.exe	javaw.exe
PID 1792 wrote to memory of 1724	1792	wscript.exe	javaw.exe
PID 1724 wrote to memory of 1384	1724	javaw.exe	java.exe
PID 1724 wrote to memory of 1384	1724	javaw.exe	java.exe
PID 1724 wrote to memory of 1384	1724	javaw.exe	java.exe
PID 1384 wrote to memory of 2028	1384	java.exe	cmd.exe
PID 1384 wrote to memory of 2028	1384	java.exe	cmd.exe
PID 1384 wrote to memory of 2028	1384	java.exe	cmd.exe
PID 1384 wrote to memory of 900	1384	java.exe	java.exe
PID 1384 wrote to memory of 900	1384	java.exe	java.exe
PID 1384 wrote to memory of 900	1384	java.exe	java.exe
PID 2028 wrote to memory of 1740	2028	cmd.exe	schtasks.exe
PID 2028 wrote to memory of 1740	2028	cmd.exe	schtasks.exe
PID 2028 wrote to memory of 1740	2028	cmd.exe	schtasks.exe

C:\Windows\system32\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\PO#5200668.jar
1⤵
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Windows\system32\wscript.exe
  wscript C:\Users\Admin\vpjwxgdblj.js
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1792
- - C:\Program Files\Java\jre7\bin\javaw.exe
    "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\uzyjhvfo.txt"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1724
  - - C:\Program Files\Java\jre7\bin\java.exe
      "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\uzyjhvfo.txt"
      4⤵
      Drops startup file
      Loads dropped DLL
      Adds Run key to start application
      Suspicious use of WriteProcessMemory
      PID:1384
    - - C:\Program Files\Java\jre7\bin\java.exe
        
        "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\uzyjhvfo.txt"
        5⤵
        Loads dropped DLL
        
        PID:900
    - - C:\Windows\system32\cmd.exe
        
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\uzyjhvfo.txt"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2028
      - C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\uzyjhvfo.txt"
        6⤵
        Creates scheduled task(s)
        
        PID:1740

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna8781345828441530058.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
e83f29ea1185a895513de2d58cd9d4d1

SHA1
ef732c5681fa6875e8f1c683a75437030f12a6dc

SHA256
db5018ccfd628e6fff8ed0a1e0e41b67e4c20129edd236a157d9f092cbbd12fb

SHA512
c85d28c55369346af965cfd5e8aff00d44ec510faad061fed0b260586d29fef8c56fbc1319cd7c2190f57fa032a1cff73de20456c557247b7f0d2e2028a61a46

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\uzyjhvfo.txt

MD5
c33235baef599c49bd6fa9020f528ec5

SHA1
ad9743c9322d4aef8690c47b7c311e5290e287a6

SHA256
f3a96713037135119cc21ee6a5be2b0dc91647e238e8a31a1f2d8ed96da1abb7

SHA512
13467e597e03b7255caae6427787264caf93cd1067e40eb81081592aa33305a0160d4cb7fd550bab002ee10da9a4aa63175eccf039b0c32390f9aec43fffc777

Download Submit
C:\Users\Admin\AppData\Roaming\uzyjhvfo.txt

MD5
c33235baef599c49bd6fa9020f528ec5

SHA1
ad9743c9322d4aef8690c47b7c311e5290e287a6

SHA256
f3a96713037135119cc21ee6a5be2b0dc91647e238e8a31a1f2d8ed96da1abb7

SHA512
13467e597e03b7255caae6427787264caf93cd1067e40eb81081592aa33305a0160d4cb7fd550bab002ee10da9a4aa63175eccf039b0c32390f9aec43fffc777

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\uzyjhvfo.txt

MD5
c33235baef599c49bd6fa9020f528ec5

SHA1
ad9743c9322d4aef8690c47b7c311e5290e287a6

SHA256
f3a96713037135119cc21ee6a5be2b0dc91647e238e8a31a1f2d8ed96da1abb7

SHA512
13467e597e03b7255caae6427787264caf93cd1067e40eb81081592aa33305a0160d4cb7fd550bab002ee10da9a4aa63175eccf039b0c32390f9aec43fffc777

Download Submit
C:\Users\Admin\vpjwxgdblj.js

MD5
5e8270b67440e1b89173cffd00d83eeb

SHA1
f6a4813914e80bb14df5c44554f1ee7a8bed78db

SHA256
daa4d87d858855984ffbe54cf74518dd3a850bad761974ca9a46693d0d672770

SHA512
b17e576cd3b0b43fa8f7facac3b842e366df7d0686825dbd85cd7203503e50ac9660a800fc0a68472832d294bb5272e70c394572adecd265e4037e11141610d1

Download Submit
\Users\Admin\AppData\Local\Temp\jna-63116079\jna8781345828441530058.dll

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
\Users\Admin\AppData\Local\Temp\jna-63116079\jna9139978367514779624.dll

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
memory/900-96-0x0000000000000000-mapping.dmp

Download
memory/900-107-0x00000000021E0000-0x0000000002450000-memory.dmp

Filesize
2.4MB

Download
memory/900-108-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1384-103-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1384-98-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1384-83-0x0000000000000000-mapping.dmp

Download
memory/1384-87-0x00000000020E0000-0x0000000002350000-memory.dmp

Filesize
2.4MB

Download
memory/1384-88-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1724-72-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1724-68-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1724-81-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1724-80-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1724-77-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1724-76-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1724-64-0x0000000000000000-mapping.dmp

Download
memory/1724-75-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1724-74-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1724-67-0x00000000020C0000-0x0000000002330000-memory.dmp

Filesize
2.4MB

Download
memory/1724-73-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1724-84-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1724-69-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1740-105-0x0000000000000000-mapping.dmp

Download
memory/1756-59-0x000007FEFBD21000-0x000007FEFBD23000-memory.dmp

Filesize
8KB

Download
memory/1756-62-0x00000000022C0000-0x0000000002530000-memory.dmp

Filesize
2.4MB

Download
memory/1756-61-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/1792-60-0x0000000000000000-mapping.dmp

Download
memory/2028-95-0x0000000000000000-mapping.dmp

Download