agenttesla | 6caa516f2494efeea180d2db725688710d5710965b9bf5709f1d3c5b911efe0d

General

Target
order list.doc.rtf
Size 1.2MB
Sample201214-51n8hrdvbx
SHA256 6caa516f2494efeea180d2db725688710d5710965b9bf5709f1d3c5b911efe0d
MD5 ba5d830a62b26976e97553e01e4a20c0
SHA1 c551cdfcc00ce68f78cddc52e4622f8d263aabbc
SHA512 4152ae194cb76884283027e64cadefb2721867604b813f3ba95604c2b68e8494092f019b9285f513fc4ceb3a7a48b3064a3a326986afa6d7ac2b5217dbec61ed
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/1492-15-0x000000000043751E-mapping.dmp	family_agenttesla
behavioral1/memory/1492-14-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1492-17-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1492-18-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Blocklisted process makes network request 1 IoCs

flow	pid	Process
6	1104	EQNEDT32.EXE

Executes dropped EXE 2 IoCs

pid	Process
2044	fortysev83894.scr
1492	fortysev83894.scr

Loads dropped DLL 2 IoCs

pid	Process
1104	EQNEDT32.EXE
1104	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 2044 set thread context of 1492	2044	fortysev83894.scr	35

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
1104	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
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
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	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
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
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	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
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1424	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1492	fortysev83894.scr
1492	fortysev83894.scr

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1492	fortysev83894.scr

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1424	WINWORD.EXE
1424	WINWORD.EXE
1492	fortysev83894.scr

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1104 wrote to memory of 2044	1104	EQNEDT32.EXE	32
PID 1104 wrote to memory of 2044	1104	EQNEDT32.EXE	32
PID 1104 wrote to memory of 2044	1104	EQNEDT32.EXE	32
PID 1104 wrote to memory of 2044	1104	EQNEDT32.EXE	32
PID 2044 wrote to memory of 1492	2044	fortysev83894.scr	35
PID 2044 wrote to memory of 1492	2044	fortysev83894.scr	35
PID 2044 wrote to memory of 1492	2044	fortysev83894.scr	35
PID 2044 wrote to memory of 1492	2044	fortysev83894.scr	35
PID 2044 wrote to memory of 1492	2044	fortysev83894.scr	35
PID 2044 wrote to memory of 1492	2044	fortysev83894.scr	35
PID 2044 wrote to memory of 1492	2044	fortysev83894.scr	35
PID 2044 wrote to memory of 1492	2044	fortysev83894.scr	35
PID 2044 wrote to memory of 1492	2044	fortysev83894.scr	35

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\order list.doc.rtf"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1424

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:1104
- C:\Users\Admin\AppData\Roaming\fortysev83894.scr
  "C:\Users\Admin\AppData\Roaming\fortysev83894.scr"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Users\Admin\AppData\Roaming\fortysev83894.scr
    "C:\Users\Admin\AppData\Roaming\fortysev83894.scr"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1492

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/1424-2-0x0000000003C20000-0x0000000003C24000-memory.dmp

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memory/1428-3-0x000007FEF74A0000-0x000007FEF771A000-memory.dmp

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memory/1492-19-0x000000006A490000-0x000000006AB7E000-memory.dmp

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memory/1492-18-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1492-17-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/1492-14-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/2044-12-0x0000000000410000-0x000000000044E000-memory.dmp

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memory/2044-10-0x0000000000DB0000-0x0000000000DB1000-memory.dmp

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memory/2044-9-0x000000006AB80000-0x000000006B26E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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