strrat | 77bc548441266a989e02d2699c1ee2b6d6dd9254a20dabbb7ab14ce8a2df4c06

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250207-en
resource tags

arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
submitted
15/02/2025, 03:20

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General

Target

77bc548441266a989e02d2699c1ee2b6d6dd9254a20dabbb7ab14ce8a2df4c06.js
Size

955KB
MD5

a8d8c8f8213370e298e4c51777b5ca6f
SHA1

e7154be7f1ece7adb9a1bda5a76023890911f26c
SHA256

77bc548441266a989e02d2699c1ee2b6d6dd9254a20dabbb7ab14ce8a2df4c06
SHA512

8336c930cd80b4e1c890ab5201d5b482bff71b5d4309a1a85b032570b9e39d93389ee07537bff58b58978bf0492c40499505074cb6ce99640ecd2d5d8b3b48e8
SSDEEP

6144:w4j8E7KdksEmXpivANu3xQ2ZFnNsa9eX44HQfYEhrn9KXXUa14VcEvb6EcB7QTkD:5wezANwdJsa9q4tNVngYABHD

Score

10^/10

strrat discovery execution persistence stealer trojan

Malware Config

Extracted

Family

strrat

chongmei33.publicvm.com:44662

chongmei33.myddns.rocks:44662

Attributes

license_id
khonsari
plugins_url
http://jbfrost.live/strigoi/server/?hwid=1&lid=m&ht=5
scheduled_task
true
secondary_startup
true
startup
true

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat
Strrat family
strrat

Downloads MZ/PE file 1 IoCs

flow	pid	Process
62	2712	Process not Found

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-194335498-2604837297-537231065-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-194335498-2604837297-537231065-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-194335498-2604837297-537231065-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\word.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\word.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pMC.jar	java.exe

Loads dropped DLL 1 IoCs

pid	Process
2200	java.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pMC = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\pMC.jar\""	java.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-194335498-2604837297-537231065-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\word = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\word.js\""	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\word = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\word.js\""	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-194335498-2604837297-537231065-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\word = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\word.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\word = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\word.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-194335498-2604837297-537231065-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pMC = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\pMC.jar\""	java.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1204	MicrosoftEdgeUpdate.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-194335498-2604837297-537231065-1000_Classes\Local Settings	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-194335498-2604837297-537231065-1000_Classes\Local Settings	WScript.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2272	schtasks.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4152 wrote to memory of 4248	4152	wscript.exe	87
PID 4152 wrote to memory of 4248	4152	wscript.exe	87
PID 4152 wrote to memory of 3712	4152	wscript.exe	88
PID 4152 wrote to memory of 3712	4152	wscript.exe	88
PID 4248 wrote to memory of 3680	4248	WScript.exe	89
PID 4248 wrote to memory of 3680	4248	WScript.exe	89
PID 3712 wrote to memory of 3172	3712	WScript.exe	90
PID 3712 wrote to memory of 3172	3712	WScript.exe	90
PID 3172 wrote to memory of 4612	3172	javaw.exe	98
PID 3172 wrote to memory of 4612	3172	javaw.exe	98
PID 4612 wrote to memory of 620	4612	java.exe	100
PID 4612 wrote to memory of 620	4612	java.exe	100
PID 4612 wrote to memory of 2200	4612	java.exe	102
PID 4612 wrote to memory of 2200	4612	java.exe	102
PID 620 wrote to memory of 2272	620	cmd.exe	104
PID 620 wrote to memory of 2272	620	cmd.exe	104

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\77bc548441266a989e02d2699c1ee2b6d6dd9254a20dabbb7ab14ce8a2df4c06.js
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4152
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\word.js"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4248
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\word.js"
    3⤵
    - Drops startup file
    - Adds Run key to start application
    PID:3680
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\adobe.js"
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3712
- - C:\Program Files\Java\jre-1.8\bin\javaw.exe
    "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Local\Temp\pMC.jar"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3172
  - - C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\pMC.jar"
      4⤵
      Drops startup file
      Adds Run key to start application
      Suspicious use of WriteProcessMemory
      PID:4612
    - - C:\Windows\SYSTEM32\cmd.exe
        
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\pMC.jar"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:620
      - C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\pMC.jar"
        6⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:2272
    - - 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\pMC.jar"
        5⤵
        Loads dropped DLL
        
        PID:2200

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI3IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDcxNzgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTY4MDM3MTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MDQzNTYxMzU0Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1204

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\adobe.js

Filesize
376KB

MD5
13d6055f2addd05e87d753757d563010

SHA1
482f29ce8f8c7ce17134d588d6447c91bfe7a667

SHA256
2efe85d32f3a6e016db40a5ba1624a41c751632950435b22553c64b7ac9166d4

SHA512
757809ed2a1f3f6c023fced28463f92bedaeebb0d081c422259af792e81fef816bfc9c5a7834626df75eec888d77d45163c74d4c432aebd9fd89abd8066e002d

Download Submit
C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna7047252584124205581.dll

Filesize
241KB

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
C:\Users\Admin\AppData\Local\Temp\pMC.jar

Filesize
265KB

MD5
ddd6ab9a4bd52a330e0bc574618882a8

SHA1
770a1b51549a0133fffd159e4f414a1c6ea8d4c6

SHA256
382ff01d1b78047fd37a43d825f5ef486420681706f388bef284fa76047d55a3

SHA512
d49ad115f6d3c3293a0d87ce2162c261104b938efc1a14ad3a3916eaf753c2694dd07b9455ba651c6c941ac7ae72dc42580054124afdb905b6f08849788018af

Download Submit
C:\Users\Admin\AppData\Local\Temp\word.js

Filesize
305KB

MD5
39a82c1919b090a2fd704fb04d063d20

SHA1
e2bd8b378bb1ef4aa3790ef8be39338057048a7c

SHA256
650220be1c8eda3f5194b01fb144b7d21d70bb50fe3de055a755c2f3f4dff420

SHA512
5872271679b2f9267133604d89dac3d96c8487b5daa2e83df5f9906be582abfacea6b956b74092eb2eefc80d8d414b719064d1e118de92f2d1c9485a4f75c835

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-194335498-2604837297-537231065-1000\83aa4cc77f591dfc2374580bbd95f6ba_2ffbc591-bfe0-4dcc-8b90-2dbce4710b41

Filesize
45B

MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

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
memory/2200-162-0x00000278A0350000-0x00000278A0351000-memory.dmp

Filesize
4KB

Download
memory/3172-53-0x0000020B8E540000-0x0000020B8E541000-memory.dmp

Filesize
4KB

Download
memory/3172-89-0x0000020B8E540000-0x0000020B8E541000-memory.dmp

Filesize
4KB

Download
memory/3172-80-0x0000020B8E540000-0x0000020B8E541000-memory.dmp

Filesize
4KB

Download
memory/3172-75-0x0000020B8E540000-0x0000020B8E541000-memory.dmp

Filesize
4KB

Download
memory/3172-72-0x0000020B8E540000-0x0000020B8E541000-memory.dmp

Filesize
4KB

Download
memory/3172-68-0x0000020B8E540000-0x0000020B8E541000-memory.dmp

Filesize
4KB

Download
memory/3172-45-0x0000020B8E540000-0x0000020B8E541000-memory.dmp

Filesize
4KB

Download
memory/4612-129-0x000001D6E73C0000-0x000001D6E73C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads