agenttesla | a914feb849114b198f068f0309172defadabc8aa5042dadc41ef7b095771f7d5

Resubmissions

03-09-2024 13:58

240903-q9w64azdke 10

02-09-2024 15:07

240902-shlbmatfkg 10

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-09-2024 15:07

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

OsussistInstaller.exe
Size

1.6MB
MD5

192846aab90044b00521f2ba4e99ee03
SHA1

14b8bb92ce9d4046c3b66dc252cfb15fd7070576
SHA256

a914feb849114b198f068f0309172defadabc8aa5042dadc41ef7b095771f7d5
SHA512

119ee834aa21e3c4460b0830d09ffbb1ee4cd1df1692d5324f66dfad5e327d953d82f93ae70b36a2286c6024c012a1ed8e0ebafabc9b31ad696ee7ffa0ee2a08
SSDEEP

24576:jTQcPTAcySiDNpfVkqgfPyU8/oa8reuaDQkqjVnlqud+/2P+AH:H70nS4pfVkqgy6r3askqXfd+/9A

Score

10^/10

agenttesla discovery keylogger spyware stealer trojan

Malware Config

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/2348-12-0x00000000067A0000-0x00000000069B2000-memory.dmp	family_agenttesla

Downloads MZ/PE file

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Fonts\comfortaa.ttf	OsussistInstaller.exe
File opened for modification	C:\Windows\Fonts\comfortaa.ttf	OsussistInstaller.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	OsussistInstaller.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.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	OsussistInstaller.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	OsussistInstaller.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion	OsussistInstaller.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2348	OsussistInstaller.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 212	2348	OsussistInstaller.exe	87
PID 2348 wrote to memory of 212	2348	OsussistInstaller.exe	87
PID 2348 wrote to memory of 212	2348	OsussistInstaller.exe	87

C:\Users\Admin\AppData\Local\Temp\OsussistInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\OsussistInstaller.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\SysWOW64\reg.exe
  "reg" add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts" /v "comfortaa (TrueType)" /t REG_SZ /d "comfortaa.ttf" /f
  2⤵
  - System Location Discovery: System Language Discovery
  PID:212

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\comfortaa.ttf

Filesize
198KB

MD5
b14da82fd326fb23ada0b4df443cda25

SHA1
89d13684a897ae7ca4dae157eb05000db6b3e6c8

SHA256
b9281be276c9f683947bb52f44f30d27dccc94e578ecec5e33c0883f01c57063

SHA512
5e9d2fc0376304fb6de2458dafa3e2f9703223a6d6e0bb78c2cad3b6e1f169a9ad5af2f39a47a15c3262608b5ba46bd048df51e189f79af97179158922dfc9a4

Download Submit
memory/2348-19-0x0000000007890000-0x0000000007942000-memory.dmp

Filesize
712KB

Download
memory/2348-20-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/2348-3-0x00000000052C0000-0x0000000005352000-memory.dmp

Filesize
584KB

Download
memory/2348-4-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/2348-1-0x00000000006D0000-0x000000000086C000-memory.dmp

Filesize
1.6MB

Download
memory/2348-11-0x00000000064B0000-0x00000000064BA000-memory.dmp

Filesize
40KB

Download
memory/2348-2-0x0000000005870000-0x0000000005E14000-memory.dmp

Filesize
5.6MB

Download
memory/2348-0-0x000000007537E000-0x000000007537F000-memory.dmp

Filesize
4KB

Download
memory/2348-12-0x00000000067A0000-0x00000000069B2000-memory.dmp

Filesize
2.1MB

Download
memory/2348-21-0x0000000008D50000-0x0000000008D72000-memory.dmp

Filesize
136KB

Download
memory/2348-22-0x0000000008D80000-0x00000000090D4000-memory.dmp

Filesize
3.3MB

Download
memory/2348-23-0x000000007537E000-0x000000007537F000-memory.dmp

Filesize
4KB

Download
memory/2348-24-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/2348-25-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/2348-31-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download