agenttesla | cc92146cb6e5e514c4bae54ced9f4bf6724b6b8b370f2f6d219aa5b0f95390ba

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 2 IoCs

resource	yara_rule
behavioral1/files/0x000100000002aaa8-19.dat	family_xworm
behavioral1/memory/4700-28-0x00000000005E0000-0x00000000005F6000-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/0x000200000002aaa6-36.dat	family_agenttesla
behavioral1/memory/1588-39-0x0000000005900000-0x0000000005B12000-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
2088	powershell.exe
1092	powershell.exe
1056	powershell.exe
472	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 2 IoCs

pid	Process
1588	Stellar Generator.exe
4700	AdobeIPC.exe

Loads dropped DLL 2 IoCs

pid	Process
1588	Stellar Generator.exe
1588	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-1-5-21-2842058299-443432012-2465494467-1000\Software\Microsoft\Windows\CurrentVersion\Run\AdobeIPC = "C:\\ProgramData\\AdobeIPC"	AdobeIPC.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
1	pastebin.com
2	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
900	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2088	powershell.exe
2088	powershell.exe
1092	powershell.exe
1092	powershell.exe
1056	powershell.exe
1056	powershell.exe
472	powershell.exe
472	powershell.exe
4700	AdobeIPC.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4700	AdobeIPC.exe
Token: SeDebugPrivilege	1588	Stellar Generator.exe
Token: SeDebugPrivilege	2088	powershell.exe
Token: SeDebugPrivilege	1092	powershell.exe
Token: SeDebugPrivilege	1056	powershell.exe
Token: SeDebugPrivilege	472	powershell.exe
Token: SeDebugPrivilege	4700	AdobeIPC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4700	AdobeIPC.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2968 wrote to memory of 1588	2968	Stellar.exe	79
PID 2968 wrote to memory of 1588	2968	Stellar.exe	79
PID 2968 wrote to memory of 1588	2968	Stellar.exe	79
PID 2968 wrote to memory of 4700	2968	Stellar.exe	80
PID 2968 wrote to memory of 4700	2968	Stellar.exe	80
PID 4700 wrote to memory of 2088	4700	AdobeIPC.exe	81
PID 4700 wrote to memory of 2088	4700	AdobeIPC.exe	81
PID 4700 wrote to memory of 1092	4700	AdobeIPC.exe	83
PID 4700 wrote to memory of 1092	4700	AdobeIPC.exe	83
PID 4700 wrote to memory of 1056	4700	AdobeIPC.exe	85
PID 4700 wrote to memory of 1056	4700	AdobeIPC.exe	85
PID 4700 wrote to memory of 472	4700	AdobeIPC.exe	87
PID 4700 wrote to memory of 472	4700	AdobeIPC.exe	87
PID 4700 wrote to memory of 900	4700	AdobeIPC.exe	89
PID 4700 wrote to memory of 900	4700	AdobeIPC.exe	89

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:2968
- 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
  - Suspicious use of AdjustPrivilegeToken
  PID:1588
- 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:4700
- - 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:2088
- - 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:1092
- - 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:1056
- - 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:472
- - 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:900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
f8c40f7624e23fa92ae2f41e34cfca77

SHA1
20e742cfe2759ac2adbc16db736a9e143ca7b677

SHA256
c51a52818a084addbfa913d2bb4bb2b0e60c287a4cf98e679f18b8a521c0aa7b

SHA512
f1da3ec61403d788d417d097a7ed2947203c6bff3cf1d35d697c31edecdf04710b3e44b2aa263b886e297b2ce923fea410ccc673261928f1d0cd81252740dbe7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
050567a067ffea4eb40fe2eefebdc1ee

SHA1
6e1fb2c7a7976e0724c532449e97722787a00fec

SHA256
3952d5b543e5cb0cb84014f4ad9f5f1b7166f592d28640cbc3d914d0e6f41d2e

SHA512
341ad71ef7e850b10e229666312e4bca87a0ed9fe25ba4b0ab65661d5a0efa855db0592153106da07134d8fc2c6c0e44709bf38183c9a574a1fa543189971259

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hxorrcqt.opa.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1588-35-0x0000000004DC0000-0x0000000004DCA000-memory.dmp

Filesize
40KB

Download
memory/1588-33-0x0000000004C20000-0x0000000004CB2000-memory.dmp

Filesize
584KB

Download
memory/1588-30-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/1588-34-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/1588-88-0x0000000074680000-0x0000000074E31000-memory.dmp

Filesize
7.7MB

Download
memory/1588-39-0x0000000005900000-0x0000000005B12000-memory.dmp

Filesize
2.1MB

Download
memory/1588-32-0x0000000005130000-0x00000000056D6000-memory.dmp

Filesize
5.6MB

Download
memory/1588-87-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/1588-31-0x0000000000270000-0x00000000002B4000-memory.dmp

Filesize
272KB

Download
memory/2088-45-0x0000015CAD2C0000-0x0000015CAD2E2000-memory.dmp

Filesize
136KB

Download
memory/2968-0-0x00007FFD59D23000-0x00007FFD59D25000-memory.dmp

Filesize
8KB

Download
memory/2968-1-0x0000000000890000-0x0000000000AFE000-memory.dmp

Filesize
2.4MB

Download
memory/4700-85-0x000000001B390000-0x000000001B3A0000-memory.dmp

Filesize
64KB

Download
memory/4700-86-0x00007FFD59D20000-0x00007FFD5A7E2000-memory.dmp

Filesize
10.8MB

Download
memory/4700-28-0x00000000005E0000-0x00000000005F6000-memory.dmp

Filesize
88KB

Download
memory/4700-29-0x00007FFD59D20000-0x00007FFD5A7E2000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads