strrat | f4267ec696cf9223569ebbb27617e04641eab296a81b919c923a54288342a34c

Analysis

max time kernel
146s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 02:17

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General

Target

f4267ec696cf9223569ebbb27617e04641eab296a81b919c923a54288342a34c.js
Size

460KB
MD5

c24358be43368c8197bc1d25f3ba421e
SHA1

b97e6fcbfccedbf673f0126caa24e1665a50dec8
SHA256

f4267ec696cf9223569ebbb27617e04641eab296a81b919c923a54288342a34c
SHA512

0d2ec59968d8169f7efb6d31551a101460bdbe8bfb8d0ac67e0a0b2841910032fabc9b824a7b7e9bc17317b12df751bf5197085b65f7d229af3a331ac982b8d7
SSDEEP

6144:Dk5b3RksMXWmzWRqpAOcGB3DRC+xpleNKkJJ2lj7j+viVd7Wbs9HLsT5UQ5TsBzr:kCyROcGVsJH6ljfpTHzzksf

Score

10^/10

strrat discovery execution persistence stealer trojan

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 2 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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 1 IoCs

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

Loads dropped DLL 1 IoCs

pid	Process
2136	java.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1092	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ylhnuig = "\"C:\\Users\\Admin\\AppData\\Roaming\\ylhnuig.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ylhnuig = "\"C:\\Users\\Admin\\AppData\\Roaming\\ylhnuig.txt\""	java.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
39	ip-api.com

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

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/Job

T1053

pid	Process
4500	schtasks.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1900	WMIC.exe
Token: SeSecurityPrivilege	1900	WMIC.exe
Token: SeTakeOwnershipPrivilege	1900	WMIC.exe
Token: SeLoadDriverPrivilege	1900	WMIC.exe
Token: SeSystemProfilePrivilege	1900	WMIC.exe
Token: SeSystemtimePrivilege	1900	WMIC.exe
Token: SeProfSingleProcessPrivilege	1900	WMIC.exe
Token: SeIncBasePriorityPrivilege	1900	WMIC.exe
Token: SeCreatePagefilePrivilege	1900	WMIC.exe
Token: SeBackupPrivilege	1900	WMIC.exe
Token: SeRestorePrivilege	1900	WMIC.exe
Token: SeShutdownPrivilege	1900	WMIC.exe
Token: SeDebugPrivilege	1900	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1900	WMIC.exe
Token: SeRemoteShutdownPrivilege	1900	WMIC.exe
Token: SeUndockPrivilege	1900	WMIC.exe
Token: SeManageVolumePrivilege	1900	WMIC.exe
Token: 33	1900	WMIC.exe
Token: 34	1900	WMIC.exe
Token: 35	1900	WMIC.exe
Token: 36	1900	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1900	WMIC.exe
Token: SeSecurityPrivilege	1900	WMIC.exe
Token: SeTakeOwnershipPrivilege	1900	WMIC.exe
Token: SeLoadDriverPrivilege	1900	WMIC.exe
Token: SeSystemProfilePrivilege	1900	WMIC.exe
Token: SeSystemtimePrivilege	1900	WMIC.exe
Token: SeProfSingleProcessPrivilege	1900	WMIC.exe
Token: SeIncBasePriorityPrivilege	1900	WMIC.exe
Token: SeCreatePagefilePrivilege	1900	WMIC.exe
Token: SeBackupPrivilege	1900	WMIC.exe
Token: SeRestorePrivilege	1900	WMIC.exe
Token: SeShutdownPrivilege	1900	WMIC.exe
Token: SeDebugPrivilege	1900	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1900	WMIC.exe
Token: SeRemoteShutdownPrivilege	1900	WMIC.exe
Token: SeUndockPrivilege	1900	WMIC.exe
Token: SeManageVolumePrivilege	1900	WMIC.exe
Token: 33	1900	WMIC.exe
Token: 34	1900	WMIC.exe
Token: 35	1900	WMIC.exe
Token: 36	1900	WMIC.exe
Token: SeIncreaseQuotaPrivilege	5076	WMIC.exe
Token: SeSecurityPrivilege	5076	WMIC.exe
Token: SeTakeOwnershipPrivilege	5076	WMIC.exe
Token: SeLoadDriverPrivilege	5076	WMIC.exe
Token: SeSystemProfilePrivilege	5076	WMIC.exe
Token: SeSystemtimePrivilege	5076	WMIC.exe
Token: SeProfSingleProcessPrivilege	5076	WMIC.exe
Token: SeIncBasePriorityPrivilege	5076	WMIC.exe
Token: SeCreatePagefilePrivilege	5076	WMIC.exe
Token: SeBackupPrivilege	5076	WMIC.exe
Token: SeRestorePrivilege	5076	WMIC.exe
Token: SeShutdownPrivilege	5076	WMIC.exe
Token: SeDebugPrivilege	5076	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5076	WMIC.exe
Token: SeRemoteShutdownPrivilege	5076	WMIC.exe
Token: SeUndockPrivilege	5076	WMIC.exe
Token: SeManageVolumePrivilege	5076	WMIC.exe
Token: 33	5076	WMIC.exe
Token: 34	5076	WMIC.exe
Token: 35	5076	WMIC.exe
Token: 36	5076	WMIC.exe
Token: SeIncreaseQuotaPrivilege	5076	WMIC.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2828 wrote to memory of 3232	2828	wscript.exe	82
PID 2828 wrote to memory of 3232	2828	wscript.exe	82
PID 3232 wrote to memory of 1092	3232	javaw.exe	84
PID 3232 wrote to memory of 1092	3232	javaw.exe	84
PID 3232 wrote to memory of 1828	3232	javaw.exe	86
PID 3232 wrote to memory of 1828	3232	javaw.exe	86
PID 1828 wrote to memory of 4892	1828	wscript.exe	88
PID 1828 wrote to memory of 4892	1828	wscript.exe	88
PID 4892 wrote to memory of 1964	4892	javaw.exe	96
PID 4892 wrote to memory of 1964	4892	javaw.exe	96
PID 1964 wrote to memory of 4840	1964	java.exe	98
PID 1964 wrote to memory of 4840	1964	java.exe	98
PID 1964 wrote to memory of 2136	1964	java.exe	99
PID 1964 wrote to memory of 2136	1964	java.exe	99
PID 4840 wrote to memory of 4500	4840	cmd.exe	102
PID 4840 wrote to memory of 4500	4840	cmd.exe	102
PID 2136 wrote to memory of 3232	2136	java.exe	104
PID 2136 wrote to memory of 3232	2136	java.exe	104
PID 3232 wrote to memory of 1900	3232	cmd.exe	106
PID 3232 wrote to memory of 1900	3232	cmd.exe	106
PID 2136 wrote to memory of 856	2136	java.exe	107
PID 2136 wrote to memory of 856	2136	java.exe	107
PID 856 wrote to memory of 5076	856	cmd.exe	109
PID 856 wrote to memory of 5076	856	cmd.exe	109
PID 2136 wrote to memory of 5040	2136	java.exe	110
PID 2136 wrote to memory of 5040	2136	java.exe	110
PID 5040 wrote to memory of 116	5040	cmd.exe	112
PID 5040 wrote to memory of 116	5040	cmd.exe	112
PID 2136 wrote to memory of 3720	2136	java.exe	113
PID 2136 wrote to memory of 3720	2136	java.exe	113
PID 3720 wrote to memory of 4692	3720	cmd.exe	115
PID 3720 wrote to memory of 4692	3720	cmd.exe	115

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\f4267ec696cf9223569ebbb27617e04641eab296a81b919c923a54288342a34c.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2828
- 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\Roaming\luynhqf.txt"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3232
- - C:\Windows\system32\icacls.exe
    C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
    3⤵
    - Modifies file permissions
    PID:1092
- - C:\Windows\SYSTEM32\wscript.exe
    wscript C:\Users\Admin\pnjtiaccyf.js
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:1828
  - - 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\Roaming\ylhnuig.txt"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4892
    - - C:\Program Files\Java\jre-1.8\bin\java.exe
        
        "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\ylhnuig.txt"
        5⤵
        Drops startup file
        Adds Run key to start application
        Suspicious use of WriteProcessMemory
        
        PID:1964
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\ylhnuig.txt"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:4840
        
        C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\ylhnuig.txt"
        7⤵
        Creates scheduled task(s)
        
        PID:4500
      - 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\ylhnuig.txt"
        6⤵
        Loads dropped DLL
        Suspicious use of WriteProcessMemory
        
        PID:2136
        
        C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
        7⤵
        Suspicious use of WriteProcessMemory
        
        PID:3232
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
        8⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:1900
        
        C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
        7⤵
        Suspicious use of WriteProcessMemory
        
        PID:856
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
        8⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:5076
        
        C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
        7⤵
        Suspicious use of WriteProcessMemory
        
        PID:5040
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
        8⤵
        
        PID:116
        
        C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
        7⤵
        Suspicious use of WriteProcessMemory
        
        PID:3720
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
        8⤵
        
        PID:4692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

File and Directory Permissions Modification

T1222

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:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

Filesize
46B

MD5
3f4f95744fe1760623ab623baa059099

SHA1
bde5f1c18149cd8abc42d8972cf3e42e6b6b740c

SHA256
561fcf0f7bc611924bfb3c77df680dd608989b8187297f7e072555ce832a9aaa

SHA512
c2db3266e5b85a4472217d12272df4be1e27777f99fc84f5aadf73fff6f2896bcfe1ee5c2da02b0f7234e4f5f0e46af961caa2bdfe9d83d57e2dc754d3241018

Download Submit
C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna854253908321884531.dll

Filesize
241KB

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3571316656-3665257725-2415531812-1000\83aa4cc77f591dfc2374580bbd95f6ba_a47c70d8-7adc-4ad7-994f-644a8c84c176

Filesize
45B

MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

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

Filesize
219KB

MD5
dc460eff6b011dad319db62115365f3a

SHA1
112909f254ae16361a6f3dfe757f45896fa8f522

SHA256
8d1f7af142e64bcc42117302ce5c20a1e8cce37485f5f8948f006924498cd997

SHA512
d8ed4c60a35a8be32cd391c4c356f53bedbb2f59b20061f01a0aa751091fcb367799ffab266ad9ca33ef677fe12d30811991b4641c4519aeea073a095cc74d18

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

Filesize
164KB

MD5
263238ba3312613146a92ecfad5f5abb

SHA1
57d076f1deb30314bdef4d7e4795068957c8c0d0

SHA256
4a464631cf3f7f3261f79fc443dd63d0d205806077e33e9ea1477134d2f7c723

SHA512
baaa069e01cf004eec72569fb49312dcf2b1bdac304b6c2e003a926f052c71708e2e704a14e81fbdaabbb01067c61f295bca1c97dfd2fef8ebc2b055eb12f9c4

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
C:\Users\Admin\pnjtiaccyf.js

Filesize
347KB

MD5
4ab0c7385d9202a8aed07e0086d83711

SHA1
987d7102a8585fde7412554732d7974159e007fa

SHA256
5eb64fbe30ab5c8d68fd358f31f9f3cf9c2cb52032a1736a4b327a3d02d8bd0a

SHA512
c53ffb22e9dba04607c6648c4b6dd3195eaedbf73ce6b0f065aa116db1e6188b5096b53f281e02486e0b0f8f7e407870c050465902566f4701ce511ed4631682

Download Submit
memory/1964-134-0x000001D331D60000-0x000001D331D61000-memory.dmp

Filesize
4KB

Download
memory/2136-161-0x0000027376460000-0x0000027376461000-memory.dmp

Filesize
4KB

Download
memory/2136-177-0x0000027376460000-0x0000027376461000-memory.dmp

Filesize
4KB

Download
memory/3232-17-0x0000016463500000-0x0000016463770000-memory.dmp

Filesize
2.4MB

Download
memory/3232-16-0x0000016461C20000-0x0000016461C21000-memory.dmp

Filesize
4KB

Download
memory/3232-4-0x0000016463500000-0x0000016463770000-memory.dmp

Filesize
2.4MB

Download
memory/4892-94-0x000001EC4E0A0000-0x000001EC4E0A1000-memory.dmp

Filesize
4KB

Download
memory/4892-83-0x000001EC4E0A0000-0x000001EC4E0A1000-memory.dmp

Filesize
4KB

Download
memory/4892-75-0x000001EC4E0A0000-0x000001EC4E0A1000-memory.dmp

Filesize
4KB

Download
memory/4892-58-0x000001EC4E0A0000-0x000001EC4E0A1000-memory.dmp

Filesize
4KB

Download
memory/4892-37-0x000001EC4E0A0000-0x000001EC4E0A1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads