strrat | 78882c274365a8fb9b0ce2402c31b4a173ea04e7645288c3a0210908533403cf

Analysis

max time kernel
149s
max time network
125s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
23-02-2023 11:21

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General

Target

78882c274365a8fb9b0ce2402c31b4a173ea04e7645288c3a0210908533403cf.js
Size

4.9MB
MD5

4a38e31d3ef1231427efec1bf45cd882
SHA1

e8bea5f848779e84bbb9cc0f5585a62e086fadc7
SHA256

78882c274365a8fb9b0ce2402c31b4a173ea04e7645288c3a0210908533403cf
SHA512

8449570e03218f1efaa2d31783d73fd1c74b4011e8a3d0a281dd153eddc744d1e23d19d7e875aef2df2906e5197ca4271c7b1e28be0fe036368c212b72e4c35a
SSDEEP

3072:OPcyNWe8yIe784AfkDT6sfndkHoa7Qr1Lqy/3OMEvDgzo5O2IzE1aYHgDhKXU/Wd:6TN1U

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 6 IoCs

flow	pid	Process
10	768	WScript.exe
12	768	WScript.exe
17	768	WScript.exe
19	768	WScript.exe
21	768	WScript.exe
22	768	WScript.exe

Drops startup file 3 IoCs

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

Loads dropped DLL 1 IoCs

pid	Process
1132	java.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\jawfyankbi = "\"C:\\Users\\Admin\\AppData\\Roaming\\jawfyankbi.txt\""	java.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows\CurrentVersion\Run\jawfyankbi = "\"C:\\Users\\Admin\\AppData\\Roaming\\jawfyankbi.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

pid	Process
848	schtasks.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 824 wrote to memory of 768	824	wscript.exe	28
PID 824 wrote to memory of 768	824	wscript.exe	28
PID 824 wrote to memory of 768	824	wscript.exe	28
PID 824 wrote to memory of 672	824	wscript.exe	29
PID 824 wrote to memory of 672	824	wscript.exe	29
PID 824 wrote to memory of 672	824	wscript.exe	29
PID 672 wrote to memory of 1200	672	javaw.exe	33
PID 672 wrote to memory of 1200	672	javaw.exe	33
PID 672 wrote to memory of 1200	672	javaw.exe	33
PID 1200 wrote to memory of 1180	1200	java.exe	35
PID 1200 wrote to memory of 1180	1200	java.exe	35
PID 1200 wrote to memory of 1180	1200	java.exe	35
PID 1200 wrote to memory of 1132	1200	java.exe	36
PID 1200 wrote to memory of 1132	1200	java.exe	36
PID 1200 wrote to memory of 1132	1200	java.exe	36
PID 1180 wrote to memory of 848	1180	cmd.exe	39
PID 1180 wrote to memory of 848	1180	cmd.exe	39
PID 1180 wrote to memory of 848	1180	cmd.exe	39
PID 1132 wrote to memory of 2020	1132	java.exe	41
PID 1132 wrote to memory of 2020	1132	java.exe	41
PID 1132 wrote to memory of 2020	1132	java.exe	41
PID 2020 wrote to memory of 1256	2020	cmd.exe	43
PID 2020 wrote to memory of 1256	2020	cmd.exe	43
PID 2020 wrote to memory of 1256	2020	cmd.exe	43

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:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\78882c274365a8fb9b0ce2402c31b4a173ea04e7645288c3a0210908533403cf.js
1⤵
- Suspicious use of WriteProcessMemory
PID:824
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\dwtvsZxPLc.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:768
- C:\Program Files\Java\jre7\bin\javaw.exe
  "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\jawfyankbi.txt"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:672
- - C:\Program Files\Java\jre7\bin\java.exe
    "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\jawfyankbi.txt"
    3⤵
    - Drops startup file
    - Adds Run key to start application
    - Suspicious use of WriteProcessMemory
    PID:1200
  - - C:\Windows\system32\cmd.exe
      cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\jawfyankbi.txt"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1180
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\jawfyankbi.txt"
        5⤵
        Creates scheduled task(s)
        
        PID:848
  - - C:\Program Files\Java\jre7\bin\java.exe
      "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\jawfyankbi.txt"
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:1132
    - - C:\Windows\system32\cmd.exe
        
        cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2020
      - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
        6⤵
        
        PID:1256

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3499517378-2376672570-1134980332-1000\83aa4cc77f591dfc2374580bbd95f6ba_e5bb12bd-5c29-4c03-8405-2e8855cd8e1a

Filesize
45B

MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jawfyankbi.txt

Filesize
164KB

MD5
cca2c9b0f4b9fb5b5b4ddba111b4f55e

SHA1
77612c8c8f1de38c5d4ade411b7236b7c59d1d78

SHA256
bffce92e0e7c60c715cf1409fdf4e50747f4ccd72d9b6555e69ca8b18d709724

SHA512
495aefbea7a74238afc944897b09b7e16ed2222e122d2e8b2f2ceae4098c02ec04ee51cf3d38e98cc33ca9e98522a8e493066c2683387d24cef06be113b1ef99

Download Submit
C:\Users\Admin\AppData\Roaming\dwtvsZxPLc.js

Filesize
346KB

MD5
64d7b8fa3dfd844fbe9b2dcc28be9f20

SHA1
47418bcbd930b01d8ee98ee8258b41b4d99172ce

SHA256
29126b113b9148541cc7d5b8b01629c890d1a2c68af12bf57de210ba9ae9465f

SHA512
349f1c6cb03bd87270012bed5918e42c3c06d1b89841d47d9c9c6d3e5fc556ef41e427abf79edda3becfa72d18cbab0960bb0e98b0316d6e72a604554c1313f9

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

Filesize
164KB

MD5
cca2c9b0f4b9fb5b5b4ddba111b4f55e

SHA1
77612c8c8f1de38c5d4ade411b7236b7c59d1d78

SHA256
bffce92e0e7c60c715cf1409fdf4e50747f4ccd72d9b6555e69ca8b18d709724

SHA512
495aefbea7a74238afc944897b09b7e16ed2222e122d2e8b2f2ceae4098c02ec04ee51cf3d38e98cc33ca9e98522a8e493066c2683387d24cef06be113b1ef99

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

Filesize
164KB

MD5
cca2c9b0f4b9fb5b5b4ddba111b4f55e

SHA1
77612c8c8f1de38c5d4ade411b7236b7c59d1d78

SHA256
bffce92e0e7c60c715cf1409fdf4e50747f4ccd72d9b6555e69ca8b18d709724

SHA512
495aefbea7a74238afc944897b09b7e16ed2222e122d2e8b2f2ceae4098c02ec04ee51cf3d38e98cc33ca9e98522a8e493066c2683387d24cef06be113b1ef99

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

Filesize
1.4MB

MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

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

Filesize
2.6MB

MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

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

Filesize
772KB

MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
C:\Users\Admin\jawfyankbi.txt

Filesize
164KB

MD5
cca2c9b0f4b9fb5b5b4ddba111b4f55e

SHA1
77612c8c8f1de38c5d4ade411b7236b7c59d1d78

SHA256
bffce92e0e7c60c715cf1409fdf4e50747f4ccd72d9b6555e69ca8b18d709724

SHA512
495aefbea7a74238afc944897b09b7e16ed2222e122d2e8b2f2ceae4098c02ec04ee51cf3d38e98cc33ca9e98522a8e493066c2683387d24cef06be113b1ef99

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

Filesize
1.4MB

MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

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

Filesize
2.6MB

MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

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

Filesize
4.1MB

MD5
b33387e15ab150a7bf560abdc73c3bec

SHA1
66b8075784131f578ef893fd7674273f709b9a4c

SHA256
2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

SHA512
25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

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

Filesize
772KB

MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
\Users\Admin\AppData\Local\Temp\jna-63116079\jna8310753121897481255.dll

Filesize
241KB

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
memory/672-86-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/672-96-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/672-107-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/672-90-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/672-88-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/672-98-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/672-84-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/672-77-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/672-70-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/672-105-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1132-143-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/1132-154-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/1200-118-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads