strrat | 50138aa6c36152d659a239c8877faa875d18152fa56c63fada3fc8a69d0719bf

Analysis

max time kernel
146s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 08:44

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General

Target
50138aa6c36152d659a239c8877faa875d18152fa56c63fada3fc8a69d0719bf.jar
Size 216KB
Sample240510-knbqdage86
SHA256 50138aa6c36152d659a239c8877faa875d18152fa56c63fada3fc8a69d0719bf
MD5 d553f70a48745ac7fd556cfa45efbc9c
SHA1 f4fb627758fb70518a2fb6a89be2ff3ea40241f8
SHA512 7e6aceae21bd99063d870e61dcbe39c6f19adfa4268bf91734953119a6a78428d6c1e3f44d40c56ed0cfae2df023ea8a60b09ed2acf48bc722dcd7a2d82933c2
SSDEEP 6144:8qnzpwCDhLMFZOo5WK9+TkfFNkW00canghqSiqnXrrzGFA:XzpQZFkgtNwJkgMYXrB
MD5 SHA1 SHA512 SSDEEP

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 1 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-1-5-21-4124900551-4068476067-3491212533-1000\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\safiexbmz.txt	java.exe

Loads dropped DLL 1 IoCs

pid	Process
2896	java.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4384	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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\safiexbmz = "\"C:\\Users\\Admin\\AppData\\Roaming\\safiexbmz.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\safiexbmz = "\"C:\\Users\\Admin\\AppData\\Roaming\\safiexbmz.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
26	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
1980	schtasks.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4684	WMIC.exe
Token: SeSecurityPrivilege	4684	WMIC.exe
Token: SeTakeOwnershipPrivilege	4684	WMIC.exe
Token: SeLoadDriverPrivilege	4684	WMIC.exe
Token: SeSystemProfilePrivilege	4684	WMIC.exe
Token: SeSystemtimePrivilege	4684	WMIC.exe
Token: SeProfSingleProcessPrivilege	4684	WMIC.exe
Token: SeIncBasePriorityPrivilege	4684	WMIC.exe
Token: SeCreatePagefilePrivilege	4684	WMIC.exe
Token: SeBackupPrivilege	4684	WMIC.exe
Token: SeRestorePrivilege	4684	WMIC.exe
Token: SeShutdownPrivilege	4684	WMIC.exe
Token: SeDebugPrivilege	4684	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4684	WMIC.exe
Token: SeRemoteShutdownPrivilege	4684	WMIC.exe
Token: SeUndockPrivilege	4684	WMIC.exe
Token: SeManageVolumePrivilege	4684	WMIC.exe
Token: 33	4684	WMIC.exe
Token: 34	4684	WMIC.exe
Token: 35	4684	WMIC.exe
Token: 36	4684	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4684	WMIC.exe
Token: SeSecurityPrivilege	4684	WMIC.exe
Token: SeTakeOwnershipPrivilege	4684	WMIC.exe
Token: SeLoadDriverPrivilege	4684	WMIC.exe
Token: SeSystemProfilePrivilege	4684	WMIC.exe
Token: SeSystemtimePrivilege	4684	WMIC.exe
Token: SeProfSingleProcessPrivilege	4684	WMIC.exe
Token: SeIncBasePriorityPrivilege	4684	WMIC.exe
Token: SeCreatePagefilePrivilege	4684	WMIC.exe
Token: SeBackupPrivilege	4684	WMIC.exe
Token: SeRestorePrivilege	4684	WMIC.exe
Token: SeShutdownPrivilege	4684	WMIC.exe
Token: SeDebugPrivilege	4684	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4684	WMIC.exe
Token: SeRemoteShutdownPrivilege	4684	WMIC.exe
Token: SeUndockPrivilege	4684	WMIC.exe
Token: SeManageVolumePrivilege	4684	WMIC.exe
Token: 33	4684	WMIC.exe
Token: 34	4684	WMIC.exe
Token: 35	4684	WMIC.exe
Token: 36	4684	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4940	WMIC.exe
Token: SeSecurityPrivilege	4940	WMIC.exe
Token: SeTakeOwnershipPrivilege	4940	WMIC.exe
Token: SeLoadDriverPrivilege	4940	WMIC.exe
Token: SeSystemProfilePrivilege	4940	WMIC.exe
Token: SeSystemtimePrivilege	4940	WMIC.exe
Token: SeProfSingleProcessPrivilege	4940	WMIC.exe
Token: SeIncBasePriorityPrivilege	4940	WMIC.exe
Token: SeCreatePagefilePrivilege	4940	WMIC.exe
Token: SeBackupPrivilege	4940	WMIC.exe
Token: SeRestorePrivilege	4940	WMIC.exe
Token: SeShutdownPrivilege	4940	WMIC.exe
Token: SeDebugPrivilege	4940	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4940	WMIC.exe
Token: SeRemoteShutdownPrivilege	4940	WMIC.exe
Token: SeUndockPrivilege	4940	WMIC.exe
Token: SeManageVolumePrivilege	4940	WMIC.exe
Token: 33	4940	WMIC.exe
Token: 34	4940	WMIC.exe
Token: 35	4940	WMIC.exe
Token: 36	4940	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4940	WMIC.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 4968 wrote to memory of 4384	4968	java.exe	84
PID 4968 wrote to memory of 4384	4968	java.exe	84
PID 4968 wrote to memory of 1872	4968	java.exe	87
PID 4968 wrote to memory of 1872	4968	java.exe	87
PID 1872 wrote to memory of 5004	1872	wscript.exe	88
PID 1872 wrote to memory of 5004	1872	wscript.exe	88
PID 5004 wrote to memory of 4236	5004	javaw.exe	92
PID 5004 wrote to memory of 4236	5004	javaw.exe	92
PID 4236 wrote to memory of 4620	4236	java.exe	94
PID 4236 wrote to memory of 4620	4236	java.exe	94
PID 4236 wrote to memory of 2896	4236	java.exe	95
PID 4236 wrote to memory of 2896	4236	java.exe	95
PID 4620 wrote to memory of 1980	4620	cmd.exe	98
PID 4620 wrote to memory of 1980	4620	cmd.exe	98
PID 2896 wrote to memory of 1784	2896	java.exe	99
PID 2896 wrote to memory of 1784	2896	java.exe	99
PID 1784 wrote to memory of 4684	1784	cmd.exe	101
PID 1784 wrote to memory of 4684	1784	cmd.exe	101
PID 2896 wrote to memory of 3044	2896	java.exe	103
PID 2896 wrote to memory of 3044	2896	java.exe	103
PID 3044 wrote to memory of 4940	3044	cmd.exe	105
PID 3044 wrote to memory of 4940	3044	cmd.exe	105
PID 2896 wrote to memory of 4544	2896	java.exe	106
PID 2896 wrote to memory of 4544	2896	java.exe	106
PID 4544 wrote to memory of 1736	4544	cmd.exe	108
PID 4544 wrote to memory of 1736	4544	cmd.exe	108
PID 2896 wrote to memory of 2788	2896	java.exe	109
PID 2896 wrote to memory of 2788	2896	java.exe	109
PID 2788 wrote to memory of 4384	2788	cmd.exe	111
PID 2788 wrote to memory of 4384	2788	cmd.exe	111

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:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\50138aa6c36152d659a239c8877faa875d18152fa56c63fada3fc8a69d0719bf.jar
1⤵
- Suspicious use of WriteProcessMemory
PID:4968
- C:\Windows\system32\icacls.exe
  C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
  2⤵
  - Modifies file permissions
  PID:4384
- C:\Windows\SYSTEM32\wscript.exe
  wscript C:\Users\Admin\eqqbccrwqf.js
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:1872
- - 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\safiexbmz.txt"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5004
  - - C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\safiexbmz.txt"
      4⤵
      Drops startup file
      Adds Run key to start application
      Suspicious use of WriteProcessMemory
      PID:4236
    - - C:\Windows\SYSTEM32\cmd.exe
        
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\safiexbmz.txt"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4620
      - C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\safiexbmz.txt"
        6⤵
        Creates scheduled task(s)
        
        PID:1980
    - - 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\safiexbmz.txt"
        5⤵
        Loads dropped DLL
        Suspicious use of WriteProcessMemory
        
        PID:2896
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:1784
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
        7⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:4684
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:3044
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
        7⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:4940
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:4544
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
        7⤵
        
        PID:1736
      - C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:2788
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
        7⤵
        
        PID:4384

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

3903daac9bc4a3b7.timestamp

Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
Size 46B
SHA256 5ab835c9ae62058c429c320af4e93e452c04e6c9569e087c2bd7512f64d1ccab
MD5 cafeafd11f40dbb7595f722d111d6bea
SHA1 7fe1410a2cde5e613d14b1df593f85fd1647320d
SHA512 3251ea4cbbd61fafe6bdd4815cdb4a798065b62fce4b9d72d9d1b28ab9cd47d5989091a03ec3d68819170b72db272307054fa47fa65e6b8d916366a72e631084
MD5 SHA1 SHA512

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jna5024878123241014751.dll

Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna5024878123241014751.dll
Size 241KB
SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
MD5 e02979ecd43bcc9061eb2b494ab5af50
SHA1 3122ac0e751660f646c73b10c4f79685aa65c545
SHA512 1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
SSDEEP 6144:YW2uuBVCg2ZF0xk5udHB7EkAgEEz2Lh2LDh+MDWHNaL7yyubjmiy9NBW:YW2uAC9sVEZL0vdnz
MD5 SHA1 SHA512 SSDEEP

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83aa4cc77f591dfc2374580bbd95f6ba_310807ab-751f-4d81-ae09-b202eaf21e19

Path C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-4124900551-4068476067-3491212533-1000\83aa4cc77f591dfc2374580bbd95f6ba_310807ab-751f-4d81-ae09-b202eaf21e19
Size 45B
SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
MD5 c8366ae350e7019aefc9d1e6e6a498c6
SHA1 5731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA512 33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
MD5 SHA1 SHA512

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safiexbmz.txt

Path C:\Users\Admin\AppData\Roaming\safiexbmz.txt
Size 164KB
SHA256 486b68ef93d03c4e486b8ddd9e153391e7debc6839e0c09d38999dd159e30705
MD5 7ea89d19a8441cc58b7255dc9fb205fa
SHA1 2ae19607a8231bffd72353766f4017eb5492f3e8
SHA512 0a76f52939c305b2756fa486222210a4a8c40deff0fc753d11da899baaa84da2fed37ddbd333c6b1dc91ea07a2a1bffcaeb4db08dcbb3db97c925254e6bcbaf4
SSDEEP 3072:AwmVMH6YMmfEEQ9c6T4u9T7rktkOsEB0zOM4rgxgFUO0x2BRQ5Jj:AzUfvBu9TUtkOsk0RmF8x2/yF
MD5 SHA1 SHA512 SSDEEP

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eqqbccrwqf.js

Path C:\Users\Admin\eqqbccrwqf.js
Size 341KB
SHA256 32a0f059ccc7ed7c2c0b3dfe6437c21ac8b055a32782c601852dee34923b2e18
MD5 1b2c87eb5184cf84532f863a7d21fdf7
SHA1 488289245f26e29cd0365df255e988b067daec33
SHA512 d280182e35be93e380bf991c0cc6b90c61bf8aeeb11a911afc37389aa885dcd254453e09fd975e424ccc7a5b92512696f2f82f8340935e8531b97900bd7ae025
SSDEEP 6144:pusBKNSgSGAng2XlBetVc7q8YO+fSHfVfdjv7QHDUftAdcjuT1kGISNgtC11eJa3:jKYg+ngLwCTbNg10xr9
MD5 SHA1 SHA512 SSDEEP

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jna-5.5.0.jar

Path C:\Users\Admin\lib\jna-5.5.0.jar
Size 1.4MB
SHA256 b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
MD5 acfb5b5fd9ee10bf69497792fd469f85
SHA1 0e0845217c4907822403912ad6828d8e0b256208
SHA512 e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa
SSDEEP 24576:BggLnybolJdaW+864NkqCUer8N7sSFOaj5lWOEMIKk6idJRWPTgzq3bICEz2lFO:BTnybo9aW+L5qCUO0xsiMPZrJgPLLIO6
MD5 SHA1 SHA512 SSDEEP

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jna-platform-5.5.0.jar

Path C:\Users\Admin\lib\jna-platform-5.5.0.jar
Size 2.6MB
SHA256 24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
MD5 2f4a99c2758e72ee2b59a73586a2322f
SHA1 af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA512 b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494
SSDEEP 24576:DyciOooDbK7Yw1J75n4BP/NtK2ov3mhDR6:3iOLDOZJ75nwtK2ovWh8
MD5 SHA1 SHA512 SSDEEP

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sqlite-jdbc-3.14.2.1.jar

Path C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
Size 4.1MB
SHA256 2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
MD5 b33387e15ab150a7bf560abdc73c3bec
SHA1 66b8075784131f578ef893fd7674273f709b9a4c
SHA512 25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279
SSDEEP 98304:czJoX0izQbrabWo2MxgErRYxFOY8IsFWyTIiTIzMpca:cJoXHQKW9MxRr8wZZsikzMaa
MD5 SHA1 SHA512 SSDEEP

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system-hook-3.5.jar

Path C:\Users\Admin\lib\system-hook-3.5.jar
Size 772KB
SHA256 2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
MD5 e1aa38a1e78a76a6de73efae136cdb3a
SHA1 c463da71871f780b2e2e5dba115d43953b537daf
SHA512 fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d
SSDEEP 24576:IhCFW8WXvOsWW9XGmvcVfkfTnzrLvadKPpv:IhCYWstW202t
MD5 SHA1 SHA512 SSDEEP

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memory/2896-177-0x00000277F7DF0000-0x00000277F7DF1000-memory.dmp

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memory/2896-171-0x00000277F7DF0000-0x00000277F7DF1000-memory.dmp

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memory/4236-136-0x0000027692590000-0x0000027692591000-memory.dmp

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memory/4968-2-0x0000026280000000-0x0000026280270000-memory.dmp

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memory/4968-15-0x0000026280000000-0x0000026280270000-memory.dmp

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memory/4968-14-0x00000262F36E0000-0x00000262F36E1000-memory.dmp

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memory/5004-21-0x000001772FB60000-0x000001772FDD0000-memory.dmp

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memory/5004-100-0x000001772FB60000-0x000001772FDD0000-memory.dmp

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memory/5004-99-0x000001772FB40000-0x000001772FB41000-memory.dmp

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memory/5004-95-0x000001772FB40000-0x000001772FB41000-memory.dmp

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memory/5004-83-0x000001772FB40000-0x000001772FB41000-memory.dmp

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memory/5004-75-0x000001772FB40000-0x000001772FB41000-memory.dmp

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memory/5004-73-0x000001772FB40000-0x000001772FB41000-memory.dmp

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memory/5004-56-0x000001772FB40000-0x000001772FB41000-memory.dmp

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memory/5004-45-0x000001772FB40000-0x000001772FB41000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads