agenttesla | 94e9a2f9995608befac07d5ef3df47df08a2782cb49eebd20381337840312f13

General

Target
New Order List.doc
Size 1.2MB
Sample201214-fwtpl1pzdn
SHA256 94e9a2f9995608befac07d5ef3df47df08a2782cb49eebd20381337840312f13
MD5 135e805ab350429fba54464cd79e6a3a
SHA1 595e02f6140e1cf5f75f60c396161a697b444f8e
SHA512 e0d910dd8c0592593ec742e4e55a53ff22611042af7998913a9c683861e367eb556b40c018541c6cdee9c1790f9e2d0a5f485d3424efb3ffa9f28b8f9391d3ce
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
us2.smtp.mailhostbox.com
Port
587
Username
[email protected]
Password
ZRGlJ@c5

Signatures

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

AgentTesla Payload 4 IoCs

resource	yara_rule
behavioral1/memory/656-15-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/656-16-0x000000000043751E-mapping.dmp	family_agenttesla
behavioral1/memory/656-18-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/656-19-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	1364	EQNEDT32.EXE

Executes dropped EXE 3 IoCs

pid	Process
524	fortysev83893.scr
836	fortysev83893.scr
656	fortysev83893.scr

Loads dropped DLL 2 IoCs

pid	Process
1364	EQNEDT32.EXE
1364	EQNEDT32.EXE

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

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

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

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 524 set thread context of 656	524	fortysev83893.scr	36

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Office loads VBA resources, possible macro or embedded object present

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
1364	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1640	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
524	fortysev83893.scr
524	fortysev83893.scr
656	fortysev83893.scr
656	fortysev83893.scr

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	524	fortysev83893.scr
Token: SeDebugPrivilege	656	fortysev83893.scr

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1640	WINWORD.EXE
1640	WINWORD.EXE
656	fortysev83893.scr

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1364 wrote to memory of 524	1364	EQNEDT32.EXE	32
PID 1364 wrote to memory of 524	1364	EQNEDT32.EXE	32
PID 1364 wrote to memory of 524	1364	EQNEDT32.EXE	32
PID 1364 wrote to memory of 524	1364	EQNEDT32.EXE	32
PID 524 wrote to memory of 836	524	fortysev83893.scr	35
PID 524 wrote to memory of 836	524	fortysev83893.scr	35
PID 524 wrote to memory of 836	524	fortysev83893.scr	35
PID 524 wrote to memory of 836	524	fortysev83893.scr	35
PID 524 wrote to memory of 656	524	fortysev83893.scr	36
PID 524 wrote to memory of 656	524	fortysev83893.scr	36
PID 524 wrote to memory of 656	524	fortysev83893.scr	36
PID 524 wrote to memory of 656	524	fortysev83893.scr	36
PID 524 wrote to memory of 656	524	fortysev83893.scr	36
PID 524 wrote to memory of 656	524	fortysev83893.scr	36
PID 524 wrote to memory of 656	524	fortysev83893.scr	36
PID 524 wrote to memory of 656	524	fortysev83893.scr	36
PID 524 wrote to memory of 656	524	fortysev83893.scr	36

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\New Order List.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1640

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
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Users\Admin\AppData\Roaming\fortysev83893.scr
  "C:\Users\Admin\AppData\Roaming\fortysev83893.scr"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:524
- - C:\Users\Admin\AppData\Roaming\fortysev83893.scr
    "C:\Users\Admin\AppData\Roaming\fortysev83893.scr"
    3⤵
    - Executes dropped EXE
    PID:836
- - C:\Users\Admin\AppData\Roaming\fortysev83893.scr
    "C:\Users\Admin\AppData\Roaming\fortysev83893.scr"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:656

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/524-10-0x0000000000B80000-0x0000000000B81000-memory.dmp

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memory/524-9-0x000000006B8E0000-0x000000006BFCE000-memory.dmp

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memory/524-12-0x0000000000490000-0x00000000004CE000-memory.dmp

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memory/656-15-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/656-18-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/656-19-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/656-20-0x000000006AE20000-0x000000006B50E000-memory.dmp

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memory/1640-2-0x0000000003C10000-0x0000000003C14000-memory.dmp

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memory/1640-13-0x0000000000650000-0x0000000000651000-memory.dmp

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memory/1760-3-0x000007FEF7B10000-0x000007FEF7D8A000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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