agenttesla | cc92146cb6e5e514c4bae54ced9f4bf6724b6b8b370f2f6d219aa5b0f95390ba

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15-09-2024 18:10

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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
behavioral2/files/0x00070000000234af-20.dat	family_xworm
behavioral2/memory/3672-28-0x0000000000370000-0x0000000000386000-memory.dmp	family_xworm

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

AgentTesla payload 2 IoCs

resource	yara_rule
behavioral2/files/0x00070000000234ad-36.dat	family_agenttesla
behavioral2/memory/3116-39-0x0000000005A60000-0x0000000005C72000-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
5024	powershell.exe
1904	powershell.exe
2044	powershell.exe
832	powershell.exe

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	Stellar.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	AdobeIPC.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 5 IoCs

pid	Process
3116	Stellar Generator.exe
3672	AdobeIPC.exe
3620	AdobeIPC
4688	AdobeIPC
2404	AdobeIPC

Loads dropped DLL 2 IoCs

pid	Process
3116	Stellar Generator.exe
3116	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-1-5-21-1302416131-1437503476-2806442725-1000\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
14	pastebin.com
15	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
1204	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
5024	powershell.exe
5024	powershell.exe
1904	powershell.exe
1904	powershell.exe
2044	powershell.exe
2044	powershell.exe
832	powershell.exe
832	powershell.exe
3672	AdobeIPC.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	3672	AdobeIPC.exe
Token: SeDebugPrivilege	5024	powershell.exe
Token: SeDebugPrivilege	1904	powershell.exe
Token: SeDebugPrivilege	2044	powershell.exe
Token: SeDebugPrivilege	832	powershell.exe
Token: SeDebugPrivilege	3672	AdobeIPC.exe
Token: SeDebugPrivilege	3620	AdobeIPC
Token: SeDebugPrivilege	4688	AdobeIPC
Token: SeDebugPrivilege	2404	AdobeIPC

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3672	AdobeIPC.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 3116	1224	Stellar.exe	82
PID 1224 wrote to memory of 3116	1224	Stellar.exe	82
PID 1224 wrote to memory of 3116	1224	Stellar.exe	82
PID 1224 wrote to memory of 3672	1224	Stellar.exe	83
PID 1224 wrote to memory of 3672	1224	Stellar.exe	83
PID 3672 wrote to memory of 5024	3672	AdobeIPC.exe	86
PID 3672 wrote to memory of 5024	3672	AdobeIPC.exe	86
PID 3672 wrote to memory of 1904	3672	AdobeIPC.exe	90
PID 3672 wrote to memory of 1904	3672	AdobeIPC.exe	90
PID 3672 wrote to memory of 2044	3672	AdobeIPC.exe	92
PID 3672 wrote to memory of 2044	3672	AdobeIPC.exe	92
PID 3672 wrote to memory of 832	3672	AdobeIPC.exe	94
PID 3672 wrote to memory of 832	3672	AdobeIPC.exe	94
PID 3672 wrote to memory of 1204	3672	AdobeIPC.exe	96
PID 3672 wrote to memory of 1204	3672	AdobeIPC.exe	96

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⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1224
- 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:3116
- C:\ProgramData\AdobeIPC.exe
  "C:\ProgramData\AdobeIPC.exe"
  2⤵
  - Checks computer location settings
  - 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:3672
- - 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:5024
- - 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:1904
- - 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:2044
- - 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:832
- - 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:1204

C:\ProgramData\AdobeIPC
C:\ProgramData\AdobeIPC
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3620

C:\ProgramData\AdobeIPC
C:\ProgramData\AdobeIPC
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4688

C:\ProgramData\AdobeIPC
C:\ProgramData\AdobeIPC
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2404

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

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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\AdobeIPC.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
22310ad6749d8cc38284aa616efcd100

SHA1
440ef4a0a53bfa7c83fe84326a1dff4326dcb515

SHA256
55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

SHA512
2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

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

Filesize
944B

MD5
3db1c0d23daacf01eb99125ccc2787d3

SHA1
0849528de1ba411279231d635d8f39d54cc829d2

SHA256
bceb96f5c3d31447980eb8cd891bba75b3e5b6eb60abf4d829fc13cd8faf2582

SHA512
3d84635a3395bca1d91ce182ccfb9e38c8da87ad678704673a72d580e4251cedc5a6b2a89040a172a5687b67952e74a13673bd115bce7bdabaed06f89323de5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dxfwgzpa.ywt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1224-1-0x0000000000B10000-0x0000000000D7E000-memory.dmp

Filesize
2.4MB

Download
memory/1224-0-0x00007FF98A5D3000-0x00007FF98A5D5000-memory.dmp

Filesize
8KB

Download
memory/3116-39-0x0000000005A60000-0x0000000005C72000-memory.dmp

Filesize
2.1MB

Download
memory/3116-29-0x0000000000750000-0x0000000000794000-memory.dmp

Filesize
272KB

Download
memory/3116-35-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/3116-91-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/3116-33-0x0000000005000000-0x0000000005092000-memory.dmp

Filesize
584KB

Download
memory/3116-32-0x00000000054B0000-0x0000000005A54000-memory.dmp

Filesize
5.6MB

Download
memory/3116-31-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/3116-34-0x00000000050C0000-0x00000000050CA000-memory.dmp

Filesize
40KB

Download
memory/3672-30-0x00007FF98A5D0000-0x00007FF98B091000-memory.dmp

Filesize
10.8MB

Download
memory/3672-89-0x0000000002410000-0x0000000002420000-memory.dmp

Filesize
64KB

Download
memory/3672-90-0x00007FF98A5D0000-0x00007FF98B091000-memory.dmp

Filesize
10.8MB

Download
memory/3672-95-0x0000000002410000-0x0000000002420000-memory.dmp

Filesize
64KB

Download
memory/3672-28-0x0000000000370000-0x0000000000386000-memory.dmp

Filesize
88KB

Download
memory/5024-45-0x000002376D480000-0x000002376D4A2000-memory.dmp

Filesize
136KB

Download