agenttesla | 1c409fee36dda5337ef340dd480d92fbf68da68bee2a28f267def6bbb63755f6

General

Target

SOA May.xlt
Size

708KB
MD5

eab9dd0c6c9970b12851dc56c8e77ebb
SHA1

0ce87f1116fe287bc9415a051af23c81d27449c1
SHA256

1c409fee36dda5337ef340dd480d92fbf68da68bee2a28f267def6bbb63755f6
SHA512

fc619429f3ff49df839345f754ada67b35960c015b0be84289ae9aad8174142f4b6bce067bcb7babefd6aac65399806c528417329eb3dc1c87f0073e08bdb4cb

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.tractorandinas.com/
Port:
21
Username:
[email protected]
Password:
~P*xO7vPBc-o

Signatures

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

.NET Reactor proctector 2 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/memory/1600-85-0x0000000001F30000-0x0000000001F7D000-memory.dmp	net_reactor
behavioral1/memory/1600-90-0x0000000004720000-0x000000000476C000-memory.dmp	net_reactor

AgentTesla Payload 2 IoCs

resource	yara_rule
behavioral1/memory/1600-85-0x0000000001F30000-0x0000000001F7D000-memory.dmp	family_agenttesla
behavioral1/memory/1600-90-0x0000000004720000-0x000000000476C000-memory.dmp	family_agenttesla

Downloads MZ/PE file

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	ctci.exe

Executes dropped EXE 4 IoCs

pid	Process
736	ctci.exe
1600	ctci.exe
1828	Netplwiz.exe
1020	Netplwiz.exe

Loads dropped DLL 2 IoCs

pid	Process
1028	EXCEL.EXE
1028	EXCEL.EXE

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\Vaijia = "C:\\Users\\Public\\aijiaV.url"	ctci.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 736 set thread context of 1600	736	ctci.exe	34

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Office loads VBA resources, possible macro or embedded object present

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

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1028	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1600	ctci.exe
1600	ctci.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1600	ctci.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
1028	EXCEL.EXE
1028	EXCEL.EXE
1028	EXCEL.EXE
1028	EXCEL.EXE
1028	EXCEL.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1028 wrote to memory of 736	1028	EXCEL.EXE	31
PID 1028 wrote to memory of 736	1028	EXCEL.EXE	31
PID 1028 wrote to memory of 736	1028	EXCEL.EXE	31
PID 1028 wrote to memory of 736	1028	EXCEL.EXE	31
PID 736 wrote to memory of 1600	736	ctci.exe	34
PID 736 wrote to memory of 1600	736	ctci.exe	34
PID 736 wrote to memory of 1600	736	ctci.exe	34
PID 736 wrote to memory of 1600	736	ctci.exe	34
PID 736 wrote to memory of 1600	736	ctci.exe	34
PID 736 wrote to memory of 1600	736	ctci.exe	34
PID 736 wrote to memory of 304	736	ctci.exe	35
PID 736 wrote to memory of 304	736	ctci.exe	35
PID 736 wrote to memory of 304	736	ctci.exe	35
PID 736 wrote to memory of 304	736	ctci.exe	35
PID 304 wrote to memory of 1408	304	cmd.exe	37
PID 304 wrote to memory of 1408	304	cmd.exe	37
PID 304 wrote to memory of 1408	304	cmd.exe	37
PID 304 wrote to memory of 1408	304	cmd.exe	37

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\SOA May.xlt"
1⤵
- Loads dropped DLL
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1028
- C:\Users\Admin\ctci.exe
  "C:\Users\Admin\ctci.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:736
- - C:\Users\Admin\ctci.exe
    C:\Users\Admin\ctci.exe
    3⤵
    - Drops file in Drivers directory
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1600
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Public\stt.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:304
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /K C:\Users\Public\PXOR.bat
      4⤵
      PID:1408
    - - C:\Windows \System32\Netplwiz.exe
        
        "C:\Windows \System32\Netplwiz.exe"
        5⤵
        Executes dropped EXE
        
        PID:1828
    - - C:\Windows \System32\Netplwiz.exe
        
        "C:\Windows \System32\Netplwiz.exe"
        5⤵
        Executes dropped EXE
        
        PID:1020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/736-66-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1028-60-0x00000000713C1000-0x00000000713C3000-memory.dmp

Filesize
8KB

Download
memory/1028-59-0x000000002FF61000-0x000000002FF64000-memory.dmp

Filesize
12KB

Download
memory/1028-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1408-83-0x0000000075801000-0x0000000075803000-memory.dmp

Filesize
8KB

Download
memory/1408-86-0x00000000021A0000-0x0000000002295000-memory.dmp

Filesize
980KB

Download
memory/1600-81-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/1600-72-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/1600-85-0x0000000001F30000-0x0000000001F7D000-memory.dmp

Filesize
308KB

Download
memory/1600-87-0x0000000001FF1000-0x0000000001FF2000-memory.dmp

Filesize
4KB

Download
memory/1600-88-0x0000000001FF2000-0x0000000001FF3000-memory.dmp

Filesize
4KB

Download
memory/1600-89-0x0000000001FF3000-0x0000000001FF4000-memory.dmp

Filesize
4KB

Download
memory/1600-90-0x0000000004720000-0x000000000476C000-memory.dmp

Filesize
304KB

Download
memory/1600-91-0x0000000001FF4000-0x0000000001FF6000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads