agenttesla | cc92146cb6e5e514c4bae54ced9f4bf6724b6b8b370f2f6d219aa5b0f95390ba

Analysis

max time kernel
145s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-09-2024 17:54

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Stellar.exe
Size

2.4MB
MD5

d68dba883125d1a3408e13b84a3524e1
SHA1

b613717517240829d8c28242a3b2ec7c6576b3f3
SHA256

cc92146cb6e5e514c4bae54ced9f4bf6724b6b8b370f2f6d219aa5b0f95390ba
SHA512

bad82130be599397e7a58a80d8301618fd35787c8d7bf5c1ae0d2cd00f92613265cabd9678c7dcd3e4fe8251a2636b14bdc7d0c0f29e383ae54b5dcf08b30de3
SSDEEP

49152:vMkygnW2WnCzXzf7UPrn2Xb0ThRyUB1CP/yOuUaL4EgfGs3:t7nW2eCzjf7EnNvyCCZeLOG4

Score

10^/10

agenttesla xworm discovery execution keylogger persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%ProgramData%
install_file
USB.exe
pastebin_url
https://pastebin.com/raw/LsuynkUz

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/files/0x0007000000015d9a-14.dat	family_xworm
behavioral1/memory/2304-17-0x0000000000AF0000-0x0000000000B06000-memory.dmp	family_xworm
behavioral1/memory/1340-53-0x00000000011F0000-0x0000000001206000-memory.dmp	family_xworm
behavioral1/memory/3000-56-0x0000000000150000-0x0000000000166000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

AgentTesla payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000015d76-19.dat	family_agenttesla
behavioral1/memory/2560-22-0x0000000004EA0000-0x00000000050B2000-memory.dmp	family_agenttesla

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2588	powershell.exe
2612	powershell.exe
3016	powershell.exe
1936	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\AdobeIPC.lnk	AdobeIPC.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\AdobeIPC.lnk	AdobeIPC.exe

Executes dropped EXE 4 IoCs

pid	Process
2560	Stellar Generator.exe
2304	AdobeIPC.exe
1340	AdobeIPC
3000	AdobeIPC

Loads dropped DLL 2 IoCs

pid	Process
2560	Stellar Generator.exe
2560	Stellar Generator.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\AdobeIPC = "C:\\ProgramData\\AdobeIPC"	AdobeIPC.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com

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	Stellar Generator.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	Stellar Generator.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	Stellar Generator.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion	Stellar Generator.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
2556	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1936	powershell.exe
2588	powershell.exe
2612	powershell.exe
3016	powershell.exe
2304	AdobeIPC.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2304	AdobeIPC.exe
Token: SeDebugPrivilege	1936	powershell.exe
Token: SeDebugPrivilege	2588	powershell.exe
Token: SeDebugPrivilege	2612	powershell.exe
Token: SeDebugPrivilege	3016	powershell.exe
Token: SeDebugPrivilege	2304	AdobeIPC.exe
Token: SeDebugPrivilege	1340	AdobeIPC
Token: SeDebugPrivilege	3000	AdobeIPC

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2304	AdobeIPC.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 2560	1700	Stellar.exe	28
PID 1700 wrote to memory of 2560	1700	Stellar.exe	28
PID 1700 wrote to memory of 2560	1700	Stellar.exe	28
PID 1700 wrote to memory of 2560	1700	Stellar.exe	28
PID 1700 wrote to memory of 2304	1700	Stellar.exe	29
PID 1700 wrote to memory of 2304	1700	Stellar.exe	29
PID 1700 wrote to memory of 2304	1700	Stellar.exe	29
PID 2304 wrote to memory of 1936	2304	AdobeIPC.exe	30
PID 2304 wrote to memory of 1936	2304	AdobeIPC.exe	30
PID 2304 wrote to memory of 1936	2304	AdobeIPC.exe	30
PID 2304 wrote to memory of 2588	2304	AdobeIPC.exe	32
PID 2304 wrote to memory of 2588	2304	AdobeIPC.exe	32
PID 2304 wrote to memory of 2588	2304	AdobeIPC.exe	32
PID 2304 wrote to memory of 2612	2304	AdobeIPC.exe	34
PID 2304 wrote to memory of 2612	2304	AdobeIPC.exe	34
PID 2304 wrote to memory of 2612	2304	AdobeIPC.exe	34
PID 2304 wrote to memory of 3016	2304	AdobeIPC.exe	36
PID 2304 wrote to memory of 3016	2304	AdobeIPC.exe	36
PID 2304 wrote to memory of 3016	2304	AdobeIPC.exe	36
PID 2304 wrote to memory of 2556	2304	AdobeIPC.exe	38
PID 2304 wrote to memory of 2556	2304	AdobeIPC.exe	38
PID 2304 wrote to memory of 2556	2304	AdobeIPC.exe	38
PID 1848 wrote to memory of 1340	1848	taskeng.exe	43
PID 1848 wrote to memory of 1340	1848	taskeng.exe	43
PID 1848 wrote to memory of 1340	1848	taskeng.exe	43
PID 1848 wrote to memory of 3000	1848	taskeng.exe	44
PID 1848 wrote to memory of 3000	1848	taskeng.exe	44
PID 1848 wrote to memory of 3000	1848	taskeng.exe	44

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:\Users\Admin\AppData\Local\Temp\Stellar.exe
"C:\Users\Admin\AppData\Local\Temp\Stellar.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1700
- C:\ProgramData\Stellar Generator.exe
  "C:\ProgramData\Stellar Generator.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  PID:2560
- C:\ProgramData\AdobeIPC.exe
  "C:\ProgramData\AdobeIPC.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2304
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\AdobeIPC.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1936
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'AdobeIPC.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2588
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\AdobeIPC'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2612
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'AdobeIPC'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3016
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "AdobeIPC" /tr "C:\ProgramData\AdobeIPC"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2556

C:\Windows\system32\taskeng.exe
taskeng.exe {C643AB29-5A7D-4C5F-B781-23B3498C0225} S-1-5-21-1846800975-3917212583-2893086201-1000:ZQABOPWE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1848
- C:\ProgramData\AdobeIPC
  C:\ProgramData\AdobeIPC
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1340
- C:\ProgramData\AdobeIPC
  C:\ProgramData\AdobeIPC
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\AdobeIPC.exe

Filesize
65KB

MD5
1f1441f1cc6080cf821cfda93bd05e97

SHA1
8949a0762d9b68247d52209653b95f649470deee

SHA256
c2b08bb76ce8bbb8d85504b6725bd33e473a591af9bd358286c407b280d07440

SHA512
84eeda4e49ceacb5ecc8017e95893d70d52176f973a0e0b1ea1e18098d65164f4a40aeceb17b17a091b288aee0284b60b4cca934cc513039e8736573210133d9

Download Submit
C:\ProgramData\Guna.UI2.dll

Filesize
2.1MB

MD5
c97f23b52087cfa97985f784ea83498f

SHA1
d364618bec9cd6f8f5d4c24d3cc0f4c1a8e06b89

SHA256
e658e8a5616245dbe655e194b59f1bb704aaeafbd0925d6eebbe70555a638cdd

SHA512
ecfa83596f99afde9758d1142ff8b510a090cba6f42ba6fda8ca5e0520b658943ad85829a07bf17411e26e58432b74f05356f7eaeb3949a8834faa5de1a4f512

Download Submit
C:\ProgramData\Stellar Generator.exe

Filesize
247KB

MD5
6b7fce17300b729ca1c919ae47db6c7d

SHA1
2e49381b6a922bfaafd040883b04e6a8ab6148b6

SHA256
132ee3a204736259c89a6ae74d5c43e832409fa331e39686c6910936a9c7989f

SHA512
e9ee8a63e72d6d11d6396a790c61b803df3f20d326cf5279afb4cf88e0838d393f8e0e9d06f27627ad8bdaeddbdb41f996eab6f1a2e2b91c26405e4c1c242f27

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
d1fb3a15e8b0e80e79ad100de62e0b85

SHA1
a23117d2bc397a4b1ec11a99f38e59d453e4392e

SHA256
feb370398b36502ba15dcf2b76f2e6b68544f9f6d4a01ba7ecf0617ec20a3907

SHA512
6070b835ddee1e7b6a33f7bff70a9ab7215431179ffd18b697eb5ab8379db12ff4b15fa4e9400cd2ef04faeec12a180e05bc0b24a9deec6869be05c088e84e29

Download Submit
memory/1340-53-0x00000000011F0000-0x0000000001206000-memory.dmp

Filesize
88KB

Download
memory/1700-1-0x0000000000CB0000-0x0000000000F1E000-memory.dmp

Filesize
2.4MB

Download
memory/1700-0-0x000007FEF5583000-0x000007FEF5584000-memory.dmp

Filesize
4KB

Download
memory/1936-28-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/1936-27-0x000000001B640000-0x000000001B922000-memory.dmp

Filesize
2.9MB

Download
memory/2304-17-0x0000000000AF0000-0x0000000000B06000-memory.dmp

Filesize
88KB

Download
memory/2560-22-0x0000000004EA0000-0x00000000050B2000-memory.dmp

Filesize
2.1MB

Download
memory/2560-18-0x0000000000150000-0x0000000000194000-memory.dmp

Filesize
272KB

Download
memory/2560-49-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/2560-16-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/2588-34-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2588-35-0x00000000022A0000-0x00000000022A8000-memory.dmp

Filesize
32KB

Download
memory/3000-56-0x0000000000150000-0x0000000000166000-memory.dmp

Filesize
88KB

Download