strrat | c399dbe473150a5d2a9d3676d81971de66f2daf5360d2be26e62b5533c4fcbad

Analysis

max time kernel
32s
max time network
141s
platform
windows7_x64
resource
win7-en-20211104
submitted
07-12-2021 14:07

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General

Target

SHIPMENTDOCUMENTS PDF.js
Size

531KB
MD5

cf4ec0d22c787775c9f46dd0fe19da33
SHA1

f0379f9363c0c9955d9b71064a2879fd6b1cff5c
SHA256

c399dbe473150a5d2a9d3676d81971de66f2daf5360d2be26e62b5533c4fcbad
SHA512

7248e804832f6eb2fb13e73af73a41a695fa131d239ce2b5aa3495858bd387053569e1d1a0e530a1e4f1a949a7c87e0995ad9443b9e2ec49d9a09889e8ccbb1f

Score

10^/10

strrat vjw0rm persistence stealer trojan worm

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 3 IoCs

Processes:

WScript.exe

flow pid process

11 1632 WScript.exe
14 1632 WScript.exe
15 1632 WScript.exe

flow	pid	process
11	1632	WScript.exe
14	1632	WScript.exe
15	1632	WScript.exe

Drops startup file 3 IoCs

Processes:

WScript.exejava.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IwhBHZSsWd.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IwhBHZSsWd.js	WScript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bkoqhlyydh.txt	java.exe

Loads dropped DLL 1 IoCs

Processes:

java.exe

pid process

1376 java.exe

pid	process
1376	java.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

WScript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\IwhBHZSsWd.js\""	WScript.exe
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.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

1972 schtasks.exe

pid	process
1972	schtasks.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

wscript.exejavaw.exe

description	pid	process	target process
PID 1620 wrote to memory of 1632	1620	wscript.exe	WScript.exe
PID 1620 wrote to memory of 1632	1620	wscript.exe	WScript.exe
PID 1620 wrote to memory of 1632	1620	wscript.exe	WScript.exe
PID 1620 wrote to memory of 688	1620	wscript.exe	javaw.exe
PID 1620 wrote to memory of 688	1620	wscript.exe	javaw.exe
PID 1620 wrote to memory of 688	1620	wscript.exe	javaw.exe
PID 688 wrote to memory of 1376	688	javaw.exe	java.exe
PID 688 wrote to memory of 1376	688	javaw.exe	java.exe
PID 688 wrote to memory of 1376	688	javaw.exe	java.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\SHIPMENTDOCUMENTS PDF.js"
1⤵
- Suspicious use of WriteProcessMemory
PID:1620

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\IwhBHZSsWd.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1632

C:\Program Files\Java\jre7\bin\javaw.exe
"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt"
2⤵
- Suspicious use of WriteProcessMemory
PID:688

C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\bkoqhlyydh.txt"
3⤵
- Drops startup file
- Loads dropped DLL
PID:1376

C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt"
4⤵
PID:1456

C:\Windows\system32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt"
4⤵
PID:1280

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt"
5⤵
- Creates scheduled task(s)
PID:1972

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

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Downloads

C:\Users\Admin\AppData\Roaming\IwhBHZSsWd.js
MD5
be3598b9ef31862aa34d1b79014c22de

SHA1
4d102790ec4bb3f6c95dc5097355c5f03c27beaf

SHA256
69ffc81cf2305ba7dedc79679eb1929dbdbf9e0a4cd6a53193c0367279750b4c

SHA512
778ad27bedbe8c275a5abdcba6f9a1ba43d8963ca67bbc768265fe6e5dcd380e1c7a191f7471364f5d6c22b1ba954819574f185141c631b2deca53a3ba6f7c01

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-103686315-404690609-2047157615-1000\83aa4cc77f591dfc2374580bbd95f6ba_b9d440b4-6805-4743-9d27-9cb5fc4d9db0
MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

Download Submit
C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt
MD5
4a769959e2ee2785d32ef2161f28cd8b

SHA1
e31b455b90081313e3b7405db3efe1582fe39daa

SHA256
496536d34981fc4155772fe136930ef13cf16116a4df18e6261dd084fce40b21

SHA512
8ef798581834a365f8a7649572c8683e9294cb950917b9c1e9b6ae60bf48b2e4d0e3be312843e398868f31835f276df24f4c5c2b6fb07b654322a8d5351815ca

Download Submit
C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt
MD5
4a769959e2ee2785d32ef2161f28cd8b

SHA1
e31b455b90081313e3b7405db3efe1582fe39daa

SHA256
496536d34981fc4155772fe136930ef13cf16116a4df18e6261dd084fce40b21

SHA512
8ef798581834a365f8a7649572c8683e9294cb950917b9c1e9b6ae60bf48b2e4d0e3be312843e398868f31835f276df24f4c5c2b6fb07b654322a8d5351815ca

Download Submit
C:\Users\Admin\bkoqhlyydh.txt
MD5
4a769959e2ee2785d32ef2161f28cd8b

SHA1
e31b455b90081313e3b7405db3efe1582fe39daa

SHA256
496536d34981fc4155772fe136930ef13cf16116a4df18e6261dd084fce40b21

SHA512
8ef798581834a365f8a7649572c8683e9294cb950917b9c1e9b6ae60bf48b2e4d0e3be312843e398868f31835f276df24f4c5c2b6fb07b654322a8d5351815ca

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
\Users\Admin\AppData\Local\Temp\jna-63116079\jna6630546940771227636.dll
MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
memory/688-67-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/688-64-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/688-72-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/688-73-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/688-75-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/688-76-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/688-77-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/688-79-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/688-58-0x0000000000000000-mapping.dmp

Download
memory/688-68-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/688-61-0x00000000022A0000-0x0000000002510000-memory.dmp

Filesize
2.4MB

Download
memory/688-62-0x00000000022A0000-0x0000000002510000-memory.dmp

Filesize
2.4MB

Download
memory/688-63-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/688-71-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1280-91-0x0000000000000000-mapping.dmp

Download
memory/1376-83-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1376-84-0x0000000002060000-0x00000000022D0000-memory.dmp

Filesize
2.4MB

Download
memory/1376-78-0x0000000000000000-mapping.dmp

Download
memory/1376-93-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1376-94-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1456-92-0x0000000000000000-mapping.dmp

Download
memory/1456-99-0x0000000002200000-0x0000000002470000-memory.dmp

Filesize
2.4MB

Download
memory/1456-100-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1620-55-0x000007FEFC141000-0x000007FEFC143000-memory.dmp

Filesize
8KB

Download
memory/1632-56-0x0000000000000000-mapping.dmp

Download
memory/1972-97-0x0000000000000000-mapping.dmp

Download