strrat | bf8ee3c8ac5e570987fb535ee8c47c19ccbf400193610fa34cb31ddd48a81cd0

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7v20210408
submitted
05/07/2021, 09:51

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General

Target
Purchase LOI.jar
Size 168KB
Sample210705-5asdfgllaj
SHA256 bf8ee3c8ac5e570987fb535ee8c47c19ccbf400193610fa34cb31ddd48a81cd0
MD5 3851a4834bf578596d81688b49476834
SHA1 4c130bca45c0791d387ff6a02455e76f050b254b
SHA512 bba38ca9c0453435dba3ea45f506fd18e05a2107f778bad8d8ffdd5977493dc172f4c6d1ed2ddb67fa803374a34bf5eed5c041992f1d2758b0f59d4994b3a96f
MD5 SHA1 SHA512

Score

10^/10

strrat persistence stealer trojan

Malware Config

Signatures

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

Drops startup file 1 IoCs

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

Loads dropped DLL 2 IoCs

pid	Process
1616	java.exe
1800	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\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\nxvvzv = "\"C:\\Users\\Admin\\AppData\\Roaming\\nxvvzv.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nxvvzv = "\"C:\\Users\\Admin\\AppData\\Roaming\\nxvvzv.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
16	ip-api.com

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
1772	schtasks.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	804	WMIC.exe
Token: SeSecurityPrivilege	804	WMIC.exe
Token: SeTakeOwnershipPrivilege	804	WMIC.exe
Token: SeLoadDriverPrivilege	804	WMIC.exe
Token: SeSystemProfilePrivilege	804	WMIC.exe
Token: SeSystemtimePrivilege	804	WMIC.exe
Token: SeProfSingleProcessPrivilege	804	WMIC.exe
Token: SeIncBasePriorityPrivilege	804	WMIC.exe
Token: SeCreatePagefilePrivilege	804	WMIC.exe
Token: SeBackupPrivilege	804	WMIC.exe
Token: SeRestorePrivilege	804	WMIC.exe
Token: SeShutdownPrivilege	804	WMIC.exe
Token: SeDebugPrivilege	804	WMIC.exe
Token: SeSystemEnvironmentPrivilege	804	WMIC.exe
Token: SeRemoteShutdownPrivilege	804	WMIC.exe
Token: SeUndockPrivilege	804	WMIC.exe
Token: SeManageVolumePrivilege	804	WMIC.exe
Token: 33	804	WMIC.exe
Token: 34	804	WMIC.exe
Token: 35	804	WMIC.exe
Token: SeIncreaseQuotaPrivilege	804	WMIC.exe
Token: SeSecurityPrivilege	804	WMIC.exe
Token: SeTakeOwnershipPrivilege	804	WMIC.exe
Token: SeLoadDriverPrivilege	804	WMIC.exe
Token: SeSystemProfilePrivilege	804	WMIC.exe
Token: SeSystemtimePrivilege	804	WMIC.exe
Token: SeProfSingleProcessPrivilege	804	WMIC.exe
Token: SeIncBasePriorityPrivilege	804	WMIC.exe
Token: SeCreatePagefilePrivilege	804	WMIC.exe
Token: SeBackupPrivilege	804	WMIC.exe
Token: SeRestorePrivilege	804	WMIC.exe
Token: SeShutdownPrivilege	804	WMIC.exe
Token: SeDebugPrivilege	804	WMIC.exe
Token: SeSystemEnvironmentPrivilege	804	WMIC.exe
Token: SeRemoteShutdownPrivilege	804	WMIC.exe
Token: SeUndockPrivilege	804	WMIC.exe
Token: SeManageVolumePrivilege	804	WMIC.exe
Token: 33	804	WMIC.exe
Token: 34	804	WMIC.exe
Token: 35	804	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1864	WMIC.exe
Token: SeSecurityPrivilege	1864	WMIC.exe
Token: SeTakeOwnershipPrivilege	1864	WMIC.exe
Token: SeLoadDriverPrivilege	1864	WMIC.exe
Token: SeSystemProfilePrivilege	1864	WMIC.exe
Token: SeSystemtimePrivilege	1864	WMIC.exe
Token: SeProfSingleProcessPrivilege	1864	WMIC.exe
Token: SeIncBasePriorityPrivilege	1864	WMIC.exe
Token: SeCreatePagefilePrivilege	1864	WMIC.exe
Token: SeBackupPrivilege	1864	WMIC.exe
Token: SeRestorePrivilege	1864	WMIC.exe
Token: SeShutdownPrivilege	1864	WMIC.exe
Token: SeDebugPrivilege	1864	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1864	WMIC.exe
Token: SeRemoteShutdownPrivilege	1864	WMIC.exe
Token: SeUndockPrivilege	1864	WMIC.exe
Token: SeManageVolumePrivilege	1864	WMIC.exe
Token: 33	1864	WMIC.exe
Token: 34	1864	WMIC.exe
Token: 35	1864	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1864	WMIC.exe
Token: SeSecurityPrivilege	1864	WMIC.exe
Token: SeTakeOwnershipPrivilege	1864	WMIC.exe
Token: SeLoadDriverPrivilege	1864	WMIC.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 1348 wrote to memory of 780	1348	java.exe	27
PID 1348 wrote to memory of 780	1348	java.exe	27
PID 1348 wrote to memory of 780	1348	java.exe	27
PID 780 wrote to memory of 1780	780	wscript.exe	28
PID 780 wrote to memory of 1780	780	wscript.exe	28
PID 780 wrote to memory of 1780	780	wscript.exe	28
PID 1780 wrote to memory of 1616	1780	javaw.exe	32
PID 1780 wrote to memory of 1616	1780	javaw.exe	32
PID 1780 wrote to memory of 1616	1780	javaw.exe	32
PID 1616 wrote to memory of 1920	1616	java.exe	36
PID 1616 wrote to memory of 1920	1616	java.exe	36
PID 1616 wrote to memory of 1920	1616	java.exe	36
PID 1616 wrote to memory of 1800	1616	java.exe	35
PID 1616 wrote to memory of 1800	1616	java.exe	35
PID 1616 wrote to memory of 1800	1616	java.exe	35
PID 1920 wrote to memory of 1772	1920	cmd.exe	37
PID 1920 wrote to memory of 1772	1920	cmd.exe	37
PID 1920 wrote to memory of 1772	1920	cmd.exe	37
PID 1800 wrote to memory of 1428	1800	java.exe	40
PID 1800 wrote to memory of 1428	1800	java.exe	40
PID 1800 wrote to memory of 1428	1800	java.exe	40
PID 1428 wrote to memory of 804	1428	cmd.exe	41
PID 1428 wrote to memory of 804	1428	cmd.exe	41
PID 1428 wrote to memory of 804	1428	cmd.exe	41
PID 1800 wrote to memory of 2024	1800	java.exe	45
PID 1800 wrote to memory of 2024	1800	java.exe	45
PID 1800 wrote to memory of 2024	1800	java.exe	45
PID 2024 wrote to memory of 1864	2024	cmd.exe	43
PID 2024 wrote to memory of 1864	2024	cmd.exe	43
PID 2024 wrote to memory of 1864	2024	cmd.exe	43
PID 1800 wrote to memory of 1344	1800	java.exe	46
PID 1800 wrote to memory of 1344	1800	java.exe	46
PID 1800 wrote to memory of 1344	1800	java.exe	46
PID 1344 wrote to memory of 1740	1344	cmd.exe	47
PID 1344 wrote to memory of 1740	1344	cmd.exe	47
PID 1344 wrote to memory of 1740	1344	cmd.exe	47
PID 1800 wrote to memory of 1756	1800	java.exe	51
PID 1800 wrote to memory of 1756	1800	java.exe	51
PID 1800 wrote to memory of 1756	1800	java.exe	51
PID 1756 wrote to memory of 596	1756	cmd.exe	50
PID 1756 wrote to memory of 596	1756	cmd.exe	50
PID 1756 wrote to memory of 596	1756	cmd.exe	50

C:\Windows\system32\java.exe
java -jar "C:\Users\Admin\AppData\Local\Temp\Purchase LOI.jar"
1⤵
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Windows\system32\wscript.exe
  wscript C:\Users\Admin\nxaqdyrpok.js
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:780
- - C:\Program Files\Java\jre7\bin\javaw.exe
    "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\nxvvzv.txt"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1780
  - - C:\Program Files\Java\jre7\bin\java.exe
      "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\nxvvzv.txt"
      4⤵
      Drops startup file
      Loads dropped DLL
      Adds Run key to start application
      Suspicious use of WriteProcessMemory
      PID:1616
    - - C:\Program Files\Java\jre7\bin\java.exe
        
        "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\nxvvzv.txt"
        5⤵
        Loads dropped DLL
        Suspicious use of WriteProcessMemory
        
        PID:1800
      - 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:1428
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
        7⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:804
      - 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:2024
      - 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:1344
        
        C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
        7⤵
        
        PID:1740
      - C:\Windows\system32\cmd.exe
        
        cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:1756
    - - C:\Windows\system32\cmd.exe
        
        cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\nxvvzv.txt"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1920
      - C:\Windows\system32\schtasks.exe
        
        schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\nxvvzv.txt"
        6⤵
        Creates scheduled task(s)
        
        PID:1772

C:\Windows\System32\Wbem\WMIC.exe
wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1864

C:\Windows\System32\Wbem\WMIC.exe
wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list
1⤵
PID:596

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1348-64-0x0000000000220000-0x0000000000221000-memory.dmp

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memory/1348-62-0x0000000000220000-0x0000000000221000-memory.dmp

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memory/1348-61-0x0000000002230000-0x00000000024A0000-memory.dmp

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memory/1348-60-0x000007FEFC4A1000-0x000007FEFC4A3000-memory.dmp

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memory/1616-98-0x0000000000220000-0x0000000000221000-memory.dmp

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memory/1616-97-0x0000000002170000-0x00000000023E0000-memory.dmp

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memory/1616-107-0x0000000000220000-0x0000000000221000-memory.dmp

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memory/1780-80-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-69-0x0000000002140000-0x00000000023B0000-memory.dmp

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memory/1780-88-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-74-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-82-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-81-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-89-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-71-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-83-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-92-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-70-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-87-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1780-84-0x00000000000A0000-0x00000000000A1000-memory.dmp

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memory/1800-112-0x0000000002170000-0x00000000023E0000-memory.dmp

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memory/1800-111-0x0000000000320000-0x0000000000321000-memory.dmp

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memory/1800-130-0x0000000000320000-0x0000000000321000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads