agenttesla | 11a5d3add86410357163004a54f22335583b895a390e7eaf567e423ac7ccfeff

General

Target

11a5d3add86410357163004a54f22335583b895a390e7eaf567e423ac7ccfeff.xlam
Size

829KB
MD5

8ab8d813d3ca68c8effdb8abbf4a4f86
SHA1

f26fa096a70eec2a9900e363f63a1e6cafe5e8d4
SHA256

11a5d3add86410357163004a54f22335583b895a390e7eaf567e423ac7ccfeff
SHA512

cc5afb9559e049d62133d89c488d12b81c8338bf29177def06f890310ae75ae2964a21d07e3cf6bcbbdc103cfdf102f1ce35111ead80f9c8d247c8b8b663f0a5
SSDEEP

24576:7Y6dnGcLIS97usf6ZHqRPK21eOWWiB5Etu/3PP4qZaP2/:7YEvLISHkqjEhWVt2PwqZaP2/

Score

10^/10

agenttesla collection discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.hermosanairobi.com
Port:
587
Username:
[email protected]
Password:
+efQ)lDLJF7899
Email To:
[email protected]

Signatures

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
5	2524	EQNEDT32.EXE
7	2524	EQNEDT32.EXE

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2860	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2928	opponbvew.exe

Loads dropped DLL 2 IoCs

pid	Process
2524	EQNEDT32.EXE
2524	EQNEDT32.EXE

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2928 set thread context of 3000	2928	opponbvew.exe	35

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 5 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	opponbvew.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
2524	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1076	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2860	powershell.exe
3000	RegSvcs.exe
3000	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3000	RegSvcs.exe
Token: SeDebugPrivilege	2860	powershell.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1076	EXCEL.EXE
1076	EXCEL.EXE
1076	EXCEL.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2928	2524	EQNEDT32.EXE	32
PID 2524 wrote to memory of 2928	2524	EQNEDT32.EXE	32
PID 2524 wrote to memory of 2928	2524	EQNEDT32.EXE	32
PID 2524 wrote to memory of 2928	2524	EQNEDT32.EXE	32
PID 2928 wrote to memory of 2860	2928	opponbvew.exe	34
PID 2928 wrote to memory of 2860	2928	opponbvew.exe	34
PID 2928 wrote to memory of 2860	2928	opponbvew.exe	34
PID 2928 wrote to memory of 2860	2928	opponbvew.exe	34
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35
PID 2928 wrote to memory of 3000	2928	opponbvew.exe	35

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\11a5d3add86410357163004a54f22335583b895a390e7eaf567e423ac7ccfeff.xlam
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1076

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Users\Admin\AppData\Local\Temp\opponbvew.exe
  C:\Users\Admin\AppData\Local\Temp\opponbvew.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2928
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\opponbvew.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2860
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Accesses Microsoft Outlook profiles
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:3000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\opponbvew.exe

Filesize
566KB

MD5
50bc290173d92ee5699469277f6bf7b0

SHA1
acd03a67d29c0b82114e2d215085fcf682530233

SHA256
e639698621f5eeeebf0672a7e17e8bf9f36a7f2bf39891968426e8b96f57ae64

SHA512
0826bd2a48a33abbe5007fda12e9f1cd4a32a3540629f78779d91a5c3cf899098e102728149881d98b25283f4d16fb7c9f3eb4f5f01a94c3fc452eb253696c14

Download Submit
memory/1076-25-0x00000000727ED000-0x00000000727F8000-memory.dmp

Filesize
44KB

Download
memory/1076-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1076-1-0x00000000727ED000-0x00000000727F8000-memory.dmp

Filesize
44KB

Download
memory/2928-27-0x0000000005C20000-0x0000000005C92000-memory.dmp

Filesize
456KB

Download
memory/2928-26-0x0000000000560000-0x0000000000572000-memory.dmp

Filesize
72KB

Download
memory/2928-24-0x0000000000E50000-0x0000000000EE4000-memory.dmp

Filesize
592KB

Download
memory/3000-41-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-40-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-39-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-38-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3000-36-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-34-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-32-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3000-30-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download

Analysis

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